Files
iTop/core/metamodel.class.php

2617 lines
91 KiB
PHP

<?php
// #@# todo: change into class const (see Doctrine)
// Doctrine example
// class toto
// {
// /**
// * VERSION
// */
// const VERSION = '1.0.0';
// }
/**
* add some description here...
*
* @package iTopORM
*/
define('ENUM_CHILD_CLASSES_EXCLUDETOP', 1);
/**
* add some description here...
*
* @package iTopORM
*/
define('ENUM_CHILD_CLASSES_ALL', 2);
/**
* Specifies that this attribute is hidden in that state
*
* @package iTopORM
*/
define('OPT_ATT_HIDDEN', 1);
/**
* Specifies that this attribute is not editable in that state
*
* @package iTopORM
*/
define('OPT_ATT_READONLY', 2);
/**
* Specifieds that the attribute must be set (different than default value?) when arriving into that state
*
* @package iTopORM
*/
define('OPT_ATT_MANDATORY', 4);
/**
* Specifies that the attribute must change when arriving into that state
*
* @package iTopORM
*/
define('OPT_ATT_MUSTCHANGE', 8);
/**
* Specifies that the attribute must be proposed when arriving into that state
*
* @package iTopORM
*/
define('OPT_ATT_MUSTPROMPT', 16);
/**
* (API) The objects definitions as well as their mapping to the database
*
* @package iTopORM
* @author Romain Quetiez <romainquetiez@yahoo.fr>
* @author Denis Flaven <denisflave@free.fr>
* @license http://www.opensource.org/licenses/lgpl-license.php LGPL
* @link www.itop.com
* @since 1.0
* @version 1.1.1.1 $
*/
abstract class MetaModel
{
///////////////////////////////////////////////////////////////////////////
//
// STATIC Members
//
///////////////////////////////////////////////////////////////////////////
// Purpose: workaround the following limitation = PHP5 does not allow to know the class (derived from the current one)
// from which a static function is called (__CLASS__ and self are interpreted during parsing)
private static function GetCallersPHPClass($sExpectedFunctionName = null)
{
//var_dump(debug_backtrace());
$aBacktrace = debug_backtrace();
// $aBacktrace[0] is where we are
// $aBacktrace[1] is the caller of GetCallersPHPClass
// $aBacktrace[1] is the info we want
if (!empty($sExpectedFunctionName))
{
assert('$aBacktrace[2]["function"] == $sExpectedFunctionName');
}
return $aBacktrace[2]["class"];
}
// Static init -why and how it works
//
// We found the following limitations:
//- it is not possible to define non scalar constants
//- it is not possible to declare a static variable as '= new myclass()'
// Then we had do propose this model, in which a derived (non abstract)
// class should implement Init(), to call InheritAttributes or AddAttribute.
private static function _check_subclass($sClass)
{
// See also IsValidClass()... ???? #@#
// class is mandatory
// (it is not possible to guess it when called as myderived::...)
if (!array_key_exists($sClass, self::$m_aClassParams))
{
trigger_error("Unknown class '$sClass', expected a value in {".implode(', ', array_keys(self::$m_aClassParams))."}", E_USER_ERROR);
}
}
public static function static_var_dump()
{
var_dump(get_class_vars(__CLASS__));
}
private static $m_bDebugQuery = false;
private static $m_iStackDepthRef = 0;
public static function StartDebugQuery()
{
$aBacktrace = debug_backtrace();
self::$m_iStackDepthRef = count($aBacktrace);
self::$m_bDebugQuery = true;
}
public static function StopDebugQuery()
{
self::$m_bDebugQuery = false;
}
public static function DbgTrace($value)
{
if (!self::$m_bDebugQuery) return;
$aBacktrace = debug_backtrace();
$iCallStackPos = count($aBacktrace) - self::$m_bDebugQuery;
$sIndent = "";
for ($i = 0 ; $i < $iCallStackPos ; $i++)
{
$sIndent .= " .-=^=-. ";
}
$aCallers = array();
foreach($aBacktrace as $aStackInfo)
{
$aCallers[] = $aStackInfo["function"];
}
$sCallers = "Callstack: ".implode(', ', $aCallers);
$sFunction = "<b title=\"$sCallers\">".$aBacktrace[1]["function"]."</b>";
if (is_string($value))
{
echo "$sIndent$sFunction: $value<br/>\n";
}
else if (is_object($value))
{
echo "$sIndent$sFunction:\n<pre>\n";
print_r($value);
echo "</pre>\n";
}
else
{
echo "$sIndent$sFunction: $value<br/>\n";
}
}
private static $m_sDBName = "";
private static $m_sTablePrefix = ""; // table prefix for the current application instance (allow several applications on the same DB)
private static $m_Category2Class = array();
private static $m_aRootClasses = array(); // array of "classname" => "rootclass"
private static $m_aParentClasses = array(); // array of ("classname" => array of "parentclass")
private static $m_aChildClasses = array(); // array of ("classname" => array of "childclass")
private static $m_aClassParams = array(); // array of ("classname" => array of class information)
static public function GetParentPersistentClass($sRefClass)
{
$sClass = get_parent_class($sRefClass);
if (!$sClass) return '';
if ($sClass == 'DBObject') return ''; // Warning: __CLASS__ is lower case in my version of PHP
// Note: the UI/business model may implement pure PHP classes (intermediate layers)
if (array_key_exists($sClass, self::$m_aClassParams))
{
return $sClass;
}
return self::GetParentPersistentClass($sClass);
}
final static public function GetName($sClass)
{
self::_check_subclass($sClass);
return self::$m_aClassParams[$sClass]["name"];
}
final static public function GetCategory($sClass)
{
self::_check_subclass($sClass);
return self::$m_aClassParams[$sClass]["category"];
}
final static public function HasCategory($sClass, $sCategory)
{
self::_check_subclass($sClass);
return (strpos(self::$m_aClassParams[$sClass]["category"], $sCategory) !== false);
}
final static public function GetClassDescription($sClass)
{
self::_check_subclass($sClass);
return self::$m_aClassParams[$sClass]["description"];
}
final static public function IsAutoIncrementKey($sClass)
{
self::_check_subclass($sClass);
return (self::$m_aClassParams[$sClass]["key_type"] == "autoincrement");
}
final static public function GetKeyLabel($sClass)
{
self::_check_subclass($sClass);
return self::$m_aClassParams[$sClass]["key_label"];
}
final static public function GetNameAttributeCode($sClass)
{
self::_check_subclass($sClass);
return self::$m_aClassParams[$sClass]["name_attcode"];
}
final static public function GetStateAttributeCode($sClass)
{
self::_check_subclass($sClass);
return self::$m_aClassParams[$sClass]["state_attcode"];
}
final static public function GetDefaultState($sClass)
{
$sDefaultState = '';
$sStateAttrCode = self::GetStateAttributeCode($sClass);
if (!empty($sStateAttrCode))
{
$oStateAttrDef = self::GetAttributeDef($sClass, $sStateAttrCode);
$sDefaultState = $oStateAttrDef->GetDefaultValue();
}
return $sDefaultState;
}
final static public function GetReconcKeys($sClass)
{
self::_check_subclass($sClass);
return self::$m_aClassParams[$sClass]["reconc_keys"];
}
final static public function GetDisplayTemplate($sClass)
{
self::_check_subclass($sClass);
return self::$m_aClassParams[$sClass]["display_template"];
}
final static public function GetAttributeOrigin($sClass, $sAttCode)
{
self::_check_subclass($sClass);
return self::$m_aAttribOrigins[$sClass][$sAttCode];
}
final static public function GetPrequisiteAttributes($sClass, $sAttCode)
{
self::_check_subclass($sClass);
$oAtt = self::GetAttributeDef($sClass, $sAttCode);
// Temporary implementation: later, we might be able to compute
// the dependencies, based on the attributes definition
// (allowed values and default values)
if ($oAtt->IsWritable())
{
return $oAtt->GetPrerequisiteAttributes();
}
else
{
return array();
}
}
// #@# restore to private ?
final static public function DBGetTable($sClass, $sAttCode = null)
{
self::_check_subclass($sClass);
if (empty($sAttCode) || ($sAttCode == "id"))
{
$sTableRaw = self::$m_aClassParams[$sClass]["db_table"];
if (empty($sTableRaw))
{
// return an empty string whenever the table is undefined, meaning that there is no table associated to this 'abstract' class
return '';
}
else
{
return self::$m_sTablePrefix.$sTableRaw;
}
}
// This attribute has been inherited (compound objects)
return self::DBGetTable(self::$m_aAttribOrigins[$sClass][$sAttCode]);
}
final static public function DBGetKey($sClass)
{
self::_check_subclass($sClass);
return self::$m_aClassParams[$sClass]["db_key_field"];
}
final static public function DBGetClassField($sClass)
{
self::_check_subclass($sClass);
return self::$m_aClassParams[$sClass]["db_finalclass_field"];
}
final static public function HasFinalClassField($sClass)
{
self::_check_subclass($sClass);
if (!array_key_exists("db_finalclass_field", self::$m_aClassParams[$sClass])) return false;
return (self::$m_aClassParams[$sClass]["db_finalclass_field"]);
}
final static public function IsStandaloneClass($sClass)
{
self::_check_subclass($sClass);
$sRootClass = self::GetRootClass($sClass);
return (!self::HasFinalClassField($sRootClass));
}
final static public function IsSameFamilyBranch($sClassA, $sClassB)
{
self::_check_subclass($sClassA);
self::_check_subclass($sClassB);
if (in_array($sClassA, self::$m_aParentClasses[$sClassB])) return true;
if (in_array($sClassB, self::$m_aParentClasses[$sClassA])) return true;
if ($sClassA == $sClassB) return true;
return false;
}
final static public function IsSameFamily($sClassA, $sClassB)
{
self::_check_subclass($sClassA);
self::_check_subclass($sClassB);
return (self::GetRootClass($sClassA) == self::GetRootClass($sClassB));
}
// Attributes of a given class may contain attributes defined in a parent class
// - Some attributes are a copy of the definition
// - Some attributes correspond to the upper class table definition (compound objects)
// (see also filters definition)
private static $m_aAttribDefs = array(); // array of ("classname" => array of attributes)
private static $m_aAttribOrigins = array(); // array of ("classname" => array of ("attcode"=>"sourceclass"))
private static $m_aExtKeyFriends = array(); // array of ("classname" => array of ("indirect ext key attcode"=> array of ("relative ext field")))
final static public function ListAttributeDefs($sClass)
{
self::_check_subclass($sClass);
return self::$m_aAttribDefs[$sClass];
}
final public static function GetAttributesList($sClass)
{
self::_check_subclass($sClass);
return array_keys(self::$m_aAttribDefs[$sClass]);
}
final public static function GetFiltersList($sClass)
{
self::_check_subclass($sClass);
return array_keys(self::$m_aFilterDefs[$sClass]);
}
final public static function GetKeysList($sClass)
{
self::_check_subclass($sClass);
$aExtKeys = array();
foreach(self::$m_aAttribDefs[$sClass] as $sAttCode => $oAttDef)
{
if ($oAttDef->IsExternalKey())
{
$aExtKeys[] = $sAttCode;
}
}
return $aExtKeys;
}
final static public function IsValidKeyAttCode($sClass, $sAttCode)
{
if (!array_key_exists($sClass, self::$m_aAttribDefs)) return false;
if (!array_key_exists($sAttCode, self::$m_aAttribDefs[$sClass])) return false;
return (self::$m_aAttribDefs[$sClass][$sAttCode]->IsExternalKey());
}
final static public function IsValidAttCode($sClass, $sAttCode)
{
if (!array_key_exists($sClass, self::$m_aAttribDefs)) return false;
return (array_key_exists($sAttCode, self::$m_aAttribDefs[$sClass]));
}
final static public function IsAttributeOrigin($sClass, $sAttCode)
{
return (self::$m_aAttribOrigins[$sClass][$sAttCode] == $sClass);
}
final static public function IsValidFilterCode($sClass, $sFilterCode)
{
if (!array_key_exists($sClass, self::$m_aFilterDefs)) return false;
return (array_key_exists($sFilterCode, self::$m_aFilterDefs[$sClass]));
}
public static function IsValidClass($sClass)
{
return (array_key_exists($sClass, self::$m_aAttribDefs));
}
public static function IsReconcKey($sClass, $sAttCode)
{
return (in_array($sAttCode, self::GetReconcKeys($sClass)));
}
final static public function GetAttributeDef($sClass, $sAttCode)
{
self::_check_subclass($sClass);
return self::$m_aAttribDefs[$sClass][$sAttCode];
}
final static public function GetExternalKeys($sClass)
{
$aExtKeys = array();
foreach (self::ListAttributeDefs($sClass) as $sAttCode => $oAtt)
{
if ($oAtt->IsExternalKey())
{
$aExtKeys[$sAttCode] = $oAtt;
}
}
return $aExtKeys;
}
final static public function GetExternalFields($sClass, $sKeyAttCode)
{
$aExtFields = array();
foreach (self::ListAttributeDefs($sClass) as $sAttCode => $oAtt)
{
if ($oAtt->IsExternalField() && ($oAtt->GetKeyAttCode() == $sKeyAttCode))
{
$aExtFields[] = $oAtt;
}
}
return $aExtFields;
}
final static public function GetExtKeyFriends($sClass, $sExtKeyAttCode)
{
if (array_key_exists($sExtKeyAttCode, self::$m_aExtKeyFriends[$sClass]))
{
return self::$m_aExtKeyFriends[$sClass][$sExtKeyAttCode];
}
else
{
return array();
}
}
public static function GetLabel($sClass, $sAttCode)
{
$oAttDef = self::GetAttributeDef($sClass, $sAttCode);
if ($oAttDef) return $oAttDef->GetLabel();
return "";
}
public static function GetDescription($sClass, $sAttCode)
{
$oAttDef = self::GetAttributeDef($sClass, $sAttCode);
if ($oAttDef) return $oAttDef->GetDescription();
return "";
}
// Filters of a given class may contain filters defined in a parent class
// - Some filters are a copy of the definition
// - Some filters correspond to the upper class table definition (compound objects)
// (see also attributes definition)
private static $m_aFilterDefs = array(); // array of ("classname" => array filterdef)
private static $m_aFilterOrigins = array(); // array of ("classname" => array of ("attcode"=>"sourceclass"))
public static function GetClassFilterDefs($sClass)
{
self::_check_subclass($sClass);
return self::$m_aFilterDefs[$sClass];
}
final static public function GetClassFilterDef($sClass, $sFilterCode)
{
self::_check_subclass($sClass);
return self::$m_aFilterDefs[$sClass][$sFilterCode];
}
public static function GetFilterLabel($sClass, $sFilterCode)
{
$oFilter = self::GetClassFilterDef($sClass, $sFilterCode);
if ($oFilter) return $oFilter->GetLabel();
return "";
}
public static function GetFilterDescription($sClass, $sFilterCode)
{
$oFilter = self::GetClassFilterDef($sClass, $sFilterCode);
if ($oFilter) return $oFilter->GetDescription();
return "";
}
// returns an array of opcode=>oplabel (e.g. "differs from")
public static function GetFilterOperators($sClass, $sFilterCode)
{
$oFilter = self::GetClassFilterDef($sClass, $sFilterCode);
if ($oFilter) return $oFilter->GetOperators();
return array();
}
// returns an opcode
public static function GetFilterLooseOperator($sClass, $sFilterCode)
{
$oFilter = self::GetClassFilterDef($sClass, $sFilterCode);
if ($oFilter) return $oFilter->GetLooseOperator();
return array();
}
public static function GetFilterOpDescription($sClass, $sFilterCode, $sOpCode)
{
$oFilter = self::GetClassFilterDef($sClass, $sFilterCode);
if ($oFilter) return $oFilter->GetOpDescription($sOpCode);
return "";
}
public static function GetFilterHTMLInput($sFilterCode)
{
return "<INPUT name=\"$sFilterCode\">";
}
// Lists of attributes/search filters
//
private static $m_aListInfos = array(); // array of ("listcode" => various info on the list, common to every classes)
private static $m_aListData = array(); // array of ("classname" => array of "listcode" => list)
// list may be an array of attcode / fltcode
// list may be an array of "groupname" => (array of attcode / fltcode)
public static function EnumZLists()
{
return array_keys(self::$m_aListInfos);
}
final static public function GetZListInfo($sListCode)
{
return self::$m_aListInfos[$sListCode];
}
public static function GetZListItems($sClass, $sListCode)
{
if (array_key_exists($sClass, self::$m_aListData))
{
if (array_key_exists($sListCode, self::$m_aListData[$sClass]))
{
return self::$m_aListData[$sClass][$sListCode];
}
}
$sParentClass = self::GetParentPersistentClass($sClass);
if (empty($sParentClass)) return array(); // nothing for the mother of all classes
// Dig recursively
return self::GetZListItems($sParentClass, $sListCode);
}
public static function IsAttributeInZList($sClass, $sListCode, $sAttCodeOrFltCode, $sGroup = null)
{
$aZList = self::GetZListItems($sClass, $sListCode);
if (!$sGroup)
{
return (in_array($sAttCodeOrFltCode, $aZList));
}
return (in_array($sAttCodeOrFltCode, $aZList[$sGroup]));
}
//
// Relations
//
private static $m_aRelationInfos = array(); // array of ("relcode" => various info on the list, common to every classes)
public static function EnumRelations()
{
return array_keys(self::$m_aRelationInfos);
}
public static function EnumRelationProperties($sRelCode)
{
MyHelpers::CheckKeyInArray('relation code', $sRelCode, self::$m_aRelationInfos);
return self::$m_aRelationInfos[$sRelCode];
}
final static public function GetRelationProperty($sRelCode, $sProperty)
{
MyHelpers::CheckKeyInArray('relation code', $sRelCode, self::$m_aRelationInfos);
MyHelpers::CheckKeyInArray('relation property', $sProperty, self::$m_aRelationInfos[$sRelCode]);
return self::$m_aRelationInfos[$sRelCode][$sProperty];
}
public static function EnumRelationQueries($sClass, $sRelCode)
{
MyHelpers::CheckKeyInArray('relation code', $sRelCode, self::$m_aRelationInfos);
return call_user_func_array(array($sClass, 'GetRelationQueries'), array($sRelCode));
}
//
// Object lifecycle model
//
private static $m_aStates = array(); // array of ("classname" => array of "statecode"=>array('label'=>..., 'description'=>..., attribute_inherit=> attribute_list=>...))
private static $m_aStimuli = array(); // array of ("classname" => array of ("stimuluscode"=>array('label'=>..., 'description'=>...)))
private static $m_aTransitions = array(); // array of ("classname" => array of ("statcode_from"=>array of ("stimuluscode" => array('target_state'=>..., 'actions'=>array of handlers procs, 'user_restriction'=>TBD)))
public static function EnumStates($sClass)
{
if (array_key_exists($sClass, self::$m_aStates))
{
return self::$m_aStates[$sClass];
}
else
{
return array();
}
}
public static function EnumStimuli($sClass)
{
if (array_key_exists($sClass, self::$m_aStimuli))
{
return self::$m_aStimuli[$sClass];
}
else
{
return array();
}
}
public static function EnumTransitions($sClass, $sStateCode)
{
if (array_key_exists($sClass, self::$m_aTransitions))
{
if (array_key_exists($sStateCode, self::$m_aTransitions[$sClass]))
{
return self::$m_aTransitions[$sClass][$sStateCode];
}
}
return array();
}
public static function GetAttributeFlags($sClass, $sState, $sAttCode)
{
$iFlags = 0; // By default (if no life cycle) no flag at all
$sStateAttCode = self::GetStateAttributeCode($sClass);
if (!empty($sStateAttCode))
{
$aStates = MetaModel::EnumStates($sClass);
$aCurrentState = $aStates[$sState];
if ( (array_key_exists('attribute_list', $aCurrentState)) && (array_key_exists($sAttCode, $aCurrentState['attribute_list'])) )
{
$iFlags = $aCurrentState['attribute_list'][$sAttCode];
}
}
return $iFlags;
}
//
// Allowed values
//
public static function GetAllowedValues_att($sClass, $sAttCode, $aArgs = array(), $sBeginsWith = '')
{
$oAttDef = self::GetAttributeDef($sClass, $sAttCode);
if (!$oAttDef) return null;
$oValSetDef = $oAttDef->GetValuesDef();
if (!$oValSetDef) return null;
return $oValSetDef->GetValues($aArgs, $sBeginsWith);
}
public static function GetAllowedValues_flt($sClass, $sFltCode, $aArgs = array(), $sBeginsWith = '')
{
$oFltDef = self::GetClassFilterDef($sClass, $sFltCode);
if (!$oFltDef) return null;
$oValSetDef = $oFltDef->GetValuesDef();
if (!$oValSetDef) return null;
return $oValSetDef->GetValues($aArgs, $sBeginsWith);
}
//
// Businezz model declaration verbs (should be static)
//
public static function RegisterZList($sListCode, $aListInfo)
{
// Check mandatory params
$aMandatParams = array(
"description" => "detailed (though one line) description of the list",
"type" => "attributes | filters",
);
foreach($aMandatParams as $sParamName=>$sParamDesc)
{
if (!array_key_exists($sParamName, $aListInfo))
{
trigger_error("Declaration of list $sListCode - missing parameter $sParamName", E_USER_ERROR);
}
}
self::$m_aListInfos[$sListCode] = $aListInfo;
}
public static function RegisterRelation($sRelCode, $aRelationInfo)
{
// Check mandatory params
$aMandatParams = array(
"description" => "detailed (though one line) description of the list",
"verb_down" => "e.g.: 'impacts'",
"verb_up" => "e.g.: 'is impacted by'",
);
foreach($aMandatParams as $sParamName=>$sParamDesc)
{
if (!array_key_exists($sParamName, $aRelationInfo))
{
trigger_error("Declaration of relation $sRelCode - missing parameter $sParamName", E_USER_ERROR);
}
}
self::$m_aRelationInfos[$sRelCode] = $aRelationInfo;
}
// Must be called once and only once...
public static function InitClasses($sTablePrefix)
{
if (count(self::GetClasses()) > 0)
{
trigger_error("InitClasses should not be called more than once -skipped");
return;
}
self::$m_sTablePrefix = $sTablePrefix;
foreach(get_declared_classes() as $sPHPClass) {
if (is_subclass_of($sPHPClass, 'DBObject'))
{
if (method_exists($sPHPClass, 'Init'))
{
call_user_func(array($sPHPClass, 'Init'));
}
}
}
foreach (self::GetClasses() as $sClass)
{
// Compute the fields that will be used to display a pointer to another object
//
self::$m_aExtKeyFriends[$sClass] = array();
foreach (self::$m_aAttribDefs[$sClass] as $sAttCode => $oAttDef)
{
if ($oAttDef->IsExternalKey(EXTKEY_ABSOLUTE))
{
// oAttDef is either
// - an external KEY / FIELD (direct),
// - an external field pointing to an external KEY / FIELD
// - an external field pointing to an external field pointing to....
// Get the real external key attribute
// It will be our reference to determine the other ext fields related to the same ext key
$oFinalKeyAttDef = $oAttDef->GetKeyAttDef(EXTKEY_ABSOLUTE);
self::$m_aExtKeyFriends[$sClass][$sAttCode] = array();
foreach (self::GetExternalFields($sClass, $oAttDef->GetKeyAttCode($sAttCode)) as $oExtField)
{
// skip : those extfields will be processed as external keys
if ($oExtField->IsExternalKey(EXTKEY_ABSOLUTE)) continue;
// Note: I could not compare the objects by the mean of '==='
// because they are copied for the inheritance, and the internal references are NOT updated
if ($oExtField->GetKeyAttDef(EXTKEY_ABSOLUTE) == $oFinalKeyAttDef)
{
self::$m_aExtKeyFriends[$sClass][$sAttCode][$oExtField->GetCode()] = $oExtField;
}
}
}
}
// Add a 'id' filter
//
if (array_key_exists('id', self::$m_aAttribDefs[$sClass]))
{
trigger_error("Class $sClass, 'id' is a reserved keyword, it cannot be used as an attribute code", E_USER_ERROR);
}
if (array_key_exists('id', self::$m_aFilterDefs[$sClass]))
{
trigger_error("Class $sClass, 'id' is a reserved keyword, it cannot be used as a filter code", E_USER_ERROR);
}
$oFilter = new FilterPrivateKey('id', array('id_field' => self::DBGetKey($sClass)));
self::$m_aFilterDefs[$sClass]['id'] = $oFilter;
self::$m_aFilterOrigins[$sClass]['id'] = $sClass;
// Add a 'class' attribute/filter to the root classes and their children
//
if (!self::IsStandaloneClass($sClass))
{
if (array_key_exists('finalclass', self::$m_aAttribDefs[$sClass]))
{
trigger_error("Class $sClass, 'finalclass' is a reserved keyword, it cannot be used as an attribute code", E_USER_ERROR);
}
if (array_key_exists('finalclass', self::$m_aFilterDefs[$sClass]))
{
trigger_error("Class $sClass, 'finalclass' is a reserved keyword, it cannot be used as a filter code", E_USER_ERROR);
}
$sClassAttCode = 'finalclass';
$sRootClass = self::GetRootClass($sClass);
$sDbFinalClassField = self::DBGetClassField($sRootClass);
$oClassAtt = new AttributeString($sClassAttCode, array(
"label"=>"Class",
"description"=>"Real (final) object class",
"allowed_values"=>null,
"sql"=>$sDbFinalClassField,
"default_value"=>$sClass,
"is_null_allowed"=>false,
"depends_on"=>array()
));
self::$m_aAttribDefs[$sClass][$sClassAttCode] = $oClassAtt;
self::$m_aAttribOrigins[$sClass][$sClassAttCode] = $sRootClass;
$oClassFlt = new FilterFromAttribute($oClassAtt);
self::$m_aFilterDefs[$sClass][$sClassAttCode] = $oClassFlt;
self::$m_aFilterOrigins[$sClass][$sClassAttCode] = self::GetRootClass($sClass);
}
}
}
// To be overriden, must be called for any object class (optimization)
public static function Init()
{
// In fact it is an ABSTRACT function, but this is not compatible with the fact that it is STATIC (error in E_STRICT interpretation)
}
// To be overloaded by biz model declarations
public static function GetRelationQueries($sRelCode)
{
// In fact it is an ABSTRACT function, but this is not compatible with the fact that it is STATIC (error in E_STRICT interpretation)
return array();
}
public static function Init_Params($aParams)
{
// Check mandatory params
$aMandatParams = array(
"category" => "group classes by modules defining their visibility in the UI",
"name" => "internal class name, may be different than the PHP class name",
"description" => "detailed (though one line) description of the class",
"key_type" => "autoincrement | string",
"key_label" => "if set, then display the key as an attribute",
"name_attcode" => "define wich attribute is the class name, may be an inherited attribute",
"state_attcode" => "define wich attribute is representing the state (object lifecycle)",
"reconc_keys" => "define the attributes that will 'almost uniquely' identify an object in batch processes",
"db_table" => "database table",
"db_key_field" => "database field which is the key",
"db_finalclass_field" => "database field wich is the reference to the actual class of the object, considering that this will be a compound class",
);
$sClass = self::GetCallersPHPClass("Init");
if (!array_key_exists("name", $aParams))
{
trigger_error("Declaration of class $sClass: missing name ({$aMandatParams["name"]})", E_USER_ERROR);
}
foreach($aMandatParams as $sParamName=>$sParamDesc)
{
if (!array_key_exists($sParamName, $aParams))
{
trigger_error("Declaration of class $sClass - missing parameter $sParamName", E_USER_ERROR);
}
}
$aCategories = explode(',', $aParams['category']);
foreach ($aCategories as $sCategory)
{
self::$m_Category2Class[$sCategory][] = $sClass;
}
self::$m_Category2Class[''][] = $sClass; // all categories, include this one
self::$m_aRootClasses[$sClass] = $sClass; // first, let consider that I am the root... updated on inheritance
self::$m_aParentClasses[$sClass] = array();
self::$m_aChildClasses[$sClass] = array();
self::$m_aClassParams[$sClass]= $aParams;
self::$m_aAttribDefs[$sClass] = array();
self::$m_aAttribOrigins[$sClass] = array();
self::$m_aExtKeyFriends[$sClass] = array();
self::$m_aFilterDefs[$sClass] = array();
self::$m_aFilterOrigins[$sClass] = array();
}
protected static function object_array_mergeclone($aSource1, $aSource2)
{
$aRes = array();
foreach ($aSource1 as $key=>$object)
{
$aRes[$key] = clone $object;
}
foreach ($aSource2 as $key=>$object)
{
$aRes[$key] = clone $object;
}
return $aRes;
}
public static function Init_InheritAttributes($sSourceClass = null)
{
$sTargetClass = self::GetCallersPHPClass("Init");
if (empty($sSourceClass))
{
// Default: inherit from parent class
$sSourceClass = self::GetParentPersistentClass($sTargetClass);
if (empty($sSourceClass)) return; // no attributes for the mother of all classes
}
if (isset(self::$m_aAttribDefs[$sSourceClass]))
{
if (!isset(self::$m_aAttribDefs[$sTargetClass]))
{
self::$m_aAttribDefs[$sTargetClass] = array();
self::$m_aAttribOrigins[$sTargetClass] = array();
}
self::$m_aAttribDefs[$sTargetClass] = self::object_array_mergeclone(self::$m_aAttribDefs[$sTargetClass], self::$m_aAttribDefs[$sSourceClass]);
self::$m_aAttribOrigins[$sTargetClass] = array_merge(self::$m_aAttribOrigins[$sTargetClass], self::$m_aAttribOrigins[$sSourceClass]);
}
// later on, we might consider inheritance in different ways !!!
//if (strlen(self::DBGetTable($sSourceClass)) != 0)
if (self::HasFinalClassField(self::$m_aRootClasses[$sSourceClass]))
{
// Inherit the root class
self::$m_aRootClasses[$sTargetClass] = self::$m_aRootClasses[$sSourceClass];
}
else
{
// I am a root class, standalone as well !
// ????
//self::$m_aRootClasses[$sTargetClass] = $sTargetClass;
}
self::$m_aParentClasses[$sTargetClass] += self::$m_aParentClasses[$sSourceClass];
self::$m_aParentClasses[$sTargetClass][] = $sSourceClass;
// I am the child of each and every parent...
foreach(self::$m_aParentClasses[$sTargetClass] as $sAncestorClass)
{
self::$m_aChildClasses[$sAncestorClass][] = $sTargetClass;
}
}
public static function Init_OverloadAttributeParams($sAttCode, $aParams)
{
$sTargetClass = self::GetCallersPHPClass("Init");
if (!self::IsValidAttCode($sTargetClass, $sAttCode))
{
trigger_error("Could not overload '$sAttCode', expecting a code from {".implode(", ", self::GetAttributesList($sTargetClass))."}");
}
self::$m_aAttribDefs[$sTargetClass][$sAttCode]->OverloadParams($aParams);
}
public static function Init_AddAttribute(AttributeDefinition $oAtt)
{
$sTargetClass = self::GetCallersPHPClass("Init");
self::$m_aAttribDefs[$sTargetClass][$oAtt->GetCode()] = $oAtt;
self::$m_aAttribOrigins[$sTargetClass][$oAtt->GetCode()] = $sTargetClass;
// Note: it looks redundant to put targetclass there, but a mix occurs when inheritance is used
// Specific case of external fields:
// I wanted to simplify the syntax of the declaration of objects in the biz model
// Therefore, the reference to the host class is set there
$oAtt->SetHostClass($sTargetClass);
}
public static function Init_InheritFilters($sSourceClass = null)
{
$sTargetClass = self::GetCallersPHPClass("Init");
if (empty($sSourceClass))
{
// Default: inherit from parent class
$sSourceClass = self::GetParentPersistentClass($sTargetClass);
if (empty($sSourceClass)) return; // no filters for the mother of all classes
}
if (isset(self::$m_aFilterDefs[$sSourceClass]))
{
if (!isset(self::$m_aFilterDefs[$sTargetClass]))
{
self::$m_aFilterDefs[$sTargetClass] = array();
self::$m_aFilterOrigins[$sTargetClass] = array();
}
foreach (self::$m_aFilterDefs[$sSourceClass] as $sFltCode=>$oFilter)
{
if ($oFilter instanceof FilterFromAttribute)
{
// In that case, cloning is not enough:
// we must ensure that we will point to the correct
// attribute definition (in case some properties are overloaded)
$oAttDef1 = $oFilter->__GetRefAttribute();
$oAttDef2 = self::GetAttributeDef($sTargetClass, $oAttDef1->GetCode());
$oNewFilter = new FilterFromAttribute($oAttDef2);
}
else
{
$oNewFilter = clone $oFilter;
}
self::$m_aFilterDefs[$sTargetClass][$sFltCode] = $oNewFilter;
}
self::$m_aFilterOrigins[$sTargetClass] = array_merge(self::$m_aFilterOrigins[$sTargetClass], self::$m_aFilterOrigins[$sSourceClass]);
}
}
public static function Init_OverloadFilterParams($sFltCode, $aParams)
{
$sTargetClass = self::GetCallersPHPClass("Init");
if (!self::IsValidFilterCode($sTargetClass, $sFltCode))
{
trigger_error("Could not overload '$sFltCode', expecting a code from {".implode(", ", self::GetFiltersList($sTargetClass))."}");
}
self::$m_aFilterDefs[$sTargetClass][$sFltCode]->OverloadParams($aParams);
}
public static function Init_AddFilter(FilterDefinition $oFilter)
{
$sTargetClass = self::GetCallersPHPClass("Init");
self::$m_aFilterDefs[$sTargetClass][$oFilter->GetCode()] = $oFilter;
self::$m_aFilterOrigins[$sTargetClass][$oFilter->GetCode()] = $sTargetClass;
// Note: it looks redundant to put targetclass there, but a mix occurs when inheritance is used
}
public static function Init_AddFilterFromAttribute($sAttCode)
{
$sTargetClass = self::GetCallersPHPClass("Init");
$oAttDef = self::GetAttributeDef($sTargetClass, $sAttCode);
$sFilterCode = $sAttCode;
$oNewFilter = new FilterFromAttribute($oAttDef);
self::$m_aFilterDefs[$sTargetClass][$sFilterCode] = $oNewFilter;
if ($oAttDef->IsExternalField())
{
$sKeyAttCode = $oAttDef->GetKeyAttCode();
$oKeyDef = self::GetAttributeDef($sTargetClass, $sKeyAttCode);
self::$m_aFilterOrigins[$sTargetClass][$sFilterCode] = $oKeyDef->GetTargetClass();
}
else
{
self::$m_aFilterOrigins[$sTargetClass][$sFilterCode] = $sTargetClass;
}
// Note: it looks redundant to put targetclass there, but a mix occurs when inheritance is used
}
public static function Init_SetZListItems($sListCode, $aItems)
{
MyHelpers::CheckKeyInArray('list code', $sListCode, self::$m_aListInfos);
$sTargetClass = self::GetCallersPHPClass("Init");
self::$m_aListData[$sTargetClass][$sListCode] = $aItems;
}
public static function Init_DefineState($sStateCode, $aStateDef)
{
$sTargetClass = self::GetCallersPHPClass("Init");
if (is_null($aStateDef['attribute_list'])) $aStateDef['attribute_list'] = array();
$sParentState = $aStateDef['attribute_inherit'];
if (!empty($sParentState))
{
// Inherit from the given state (must be defined !)
$aToInherit = self::$m_aStates[$sTargetClass][$sParentState];
// The inherited configuration could be overriden
$aStateDef['attribute_list'] = array_merge($aToInherit, $aStateDef['attribute_list']);
}
self::$m_aStates[$sTargetClass][$sStateCode] = $aStateDef;
// by default, create an empty set of transitions associated to that state
self::$m_aTransitions[$sTargetClass][$sStateCode] = array();
}
public static function Init_DefineStimulus($sStimulusCode, $oStimulus)
{
$sTargetClass = self::GetCallersPHPClass("Init");
self::$m_aStimuli[$sTargetClass][$sStimulusCode] = $oStimulus;
}
public static function Init_DefineTransition($sStateCode, $sStimulusCode, $aTransitionDef)
{
$sTargetClass = self::GetCallersPHPClass("Init");
if (is_null($aTransitionDef['actions'])) $aTransitionDef['actions'] = array();
self::$m_aTransitions[$sTargetClass][$sStateCode][$sStimulusCode] = $aTransitionDef;
}
public static function Init_InheritLifecycle($sSourceClass = '')
{
$sTargetClass = self::GetCallersPHPClass("Init");
if (empty($sSourceClass))
{
// Default: inherit from parent class
$sSourceClass = self::GetParentPersistentClass($sTargetClass);
if (empty($sSourceClass)) return; // no attributes for the mother of all classes
}
self::$m_aClassParams[$sTargetClass]["state_attcode"] = self::$m_aClassParams[$sSourceClass]["state_attcode"];
self::$m_aStates[$sTargetClass] = clone self::$m_aStates[$sSourceClass];
self::$m_aStimuli[$sTargetClass] = clone self::$m_aStimuli[$sSourceClass];
self::$m_aTransitions[$sTargetClass] = clone self::$m_aTransitions[$sSourceClass];
}
//
// Static API
//
public static function GetRootClass($sClass = null)
{
self::_check_subclass($sClass);
return self::$m_aRootClasses[$sClass];
}
public static function IsRootClass($sClass)
{
self::_check_subclass($sClass);
return (self::GetRootClass($sClass) == $sClass);
}
public static function EnumParentClasses($sClass)
{
self::_check_subclass($sClass);
return self::$m_aParentClasses[$sClass];
}
public static function EnumChildClasses($sClass, $iOption = ENUM_CHILD_CLASSES_EXCLUDETOP)
{
self::_check_subclass($sClass);
$aRes = self::$m_aChildClasses[$sClass];
if ($iOption != ENUM_CHILD_CLASSES_EXCLUDETOP)
{
// Add it to the list
$aRes[] = $sClass;
}
return $aRes;
}
public static function EnumCategories()
{
return array_keys(self::$m_Category2Class);
}
// Note: use EnumChildClasses to take the compound objects into account
public static function GetSubclasses($sClass)
{
self::_check_subclass($sClass);
$aSubClasses = array();
foreach(get_declared_classes() as $sSubClass) {
if (is_subclass_of($sSubClass, $sClass))
{
$aSubClasses[] = $sSubClass;
}
}
return $aSubClasses;
}
public static function GetClasses($sCategory = '')
{
if (array_key_exists($sCategory, self::$m_Category2Class))
{
return self::$m_Category2Class[$sCategory];
}
if (count(self::$m_Category2Class) > 0)
{
trigger_error("unkown class category '$sCategory', expecting a value in {".implode(', ', array_keys(self::$m_Category2Class))."}");
}
return array();
}
public static function IsAbstract($sClass)
{
if (strlen(self::DBGetTable($sClass)) == 0) return true;
return false;
}
public static function MakeSelectQuery(DBObjectSearch $oFilter, $aOrderBy = array())
{
$aTranslation = array();
$aClassAliases = array();
$aTableAliases = array();
$oConditionTree = $oFilter->GetCriteria();
$oSelect = self::MakeQuery($oFilter->GetClassAlias(), $oConditionTree, $aClassAliases, $aTableAliases, $aTranslation, $oFilter);
// Check the order by specification
foreach ($aOrderBy as $sFieldAlias => $bAscending)
{
MyHelpers::CheckValueInArray('field name in ORDER BY spec', $sFieldAlias, self::GetAttributesList($oFilter->GetClass()));
if (!is_bool($bAscending))
{
trigger_error("Wrong direction in ORDER BY spec, found '$bAscending' and expecting a boolean value");
}
}
if (empty($aOrderBy))
{
$sNameAttCode = self::GetNameAttributeCode($oFilter->GetClass());
if (!empty($sNameAttCode))
{
// By default, simply order on the "name" attribute, ascending
$aOrderBy = array($sNameAttCode => true);
}
}
//MyHelpers::var_dump_html($oSelect->RenderSelect($aOrderBy));
return $oSelect->RenderSelect($aOrderBy);
}
public static function MakeDeleteQuery(DBObjectSearch $oFilter)
{
$aTranslation = array();
$aClassAliases = array();
$aTableAliases = array();
$oConditionTree = $oFilter->GetCriteria();
$oSelect = self::MakeQuery($oFilter->GetClassAlias(), $oConditionTree, $aClassAliases, $aTableAliases, $aTranslation, $oFilter);
return $oSelect->RenderDelete();
}
public static function MakeUpdateQuery(DBObjectSearch $oFilter, $aValues)
{
// $aValues is an array of $sAttCode => $value
$aTranslation = array();
$aClassAliases = array();
$aTableAliases = array();
$oConditionTree = $oFilter->GetCriteria();
$oSelect = self::MakeQuery($oFilter->GetClassAlias(), $oConditionTree, $aClassAliases, $aTableAliases, $aTranslation, $oFilter, array(), $aValues);
return $oSelect->RenderUpdate();
}
private static function MakeQuery($sGlobalTargetAlias, &$oConditionTree, &$aClassAliases, &$aTableAliases, &$aTranslation, DBObjectSearch $oFilter, $aExpectedAtts = array(), $aValues = array())
{
// Note: query class might be different than the class of the filter
// -> this occurs when we are linking our class to an external class (referenced by, or pointing to)
// $aExpectedAtts is an array of sAttCode=>sAlias
$sClass = $oFilter->GetClass();
$sClassAlias = $oFilter->GetClassAlias();
$bIsOnQueriedClass = ($sClassAlias == $sGlobalTargetAlias);
if ($bIsOnQueriedClass)
{
$aClassAliases = array_merge($aClassAliases, $oFilter->GetClasses());
}
self::DbgTrace("Entering: ".$oFilter->ToSibuSQL().", ".($bIsOnQueriedClass ? "MAIN" : "SECONDARY").", expectedatts=".count($aExpectedAtts).": ".implode(",", $aExpectedAtts));
$sRootClass = self::GetRootClass($sClass);
$sKeyField = self::DBGetKey($sClass);
if (empty($aExpectedAtts) && $bIsOnQueriedClass)
{
// default to the whole list of attributes + the very std id/finalclass
$aExpectedAtts['id'] = 'id';
foreach (self::GetAttributesList($sClass) as $sAttCode)
{
$aExpectedAtts[$sAttCode] = $sAttCode; // alias == attcode
}
}
// Compute a clear view of external keys, and external attributes
// Build the list of external keys:
// -> ext keys required by a closed join ???
// -> ext keys mentionned in a 'pointing to' condition
// -> ext keys required for an external field
//
$aExtKeys = array(); // array of sTableClass => array of (sAttCode (keys) => array of (sAttCode (fields)=> oAttDef))
//
// Optimization: could be computed once for all (cached)
// Could be done in MakeQuerySingleTable ???
//
if ($bIsOnQueriedClass)
{
// Get all Ext keys for the queried class (??)
foreach(self::GetKeysList($sClass) as $sKeyAttCode)
{
$sKeyTableClass = self::$m_aAttribOrigins[$sClass][$sKeyAttCode];
$aExtKeys[$sKeyTableClass][$sKeyAttCode] = array();
}
}
// Get all Ext keys used by the filter
foreach ($oFilter->GetCriteria_PointingTo() as $sKeyAttCode => $trash)
{
$sKeyTableClass = self::$m_aAttribOrigins[$sClass][$sKeyAttCode];
$aExtKeys[$sKeyTableClass][$sKeyAttCode] = array();
}
// Add the ext fields used in the select (eventually adds an external key)
foreach(self::ListAttributeDefs($sClass) as $sAttCode=>$oAttDef)
{
if ($oAttDef->IsExternalField())
{
$sKeyAttCode = $oAttDef->GetKeyAttCode();
if (array_key_exists($sAttCode, $aExpectedAtts) || $oConditionTree->RequiresField($sClassAlias, $sAttCode))
{
// Add the external attribute
$sKeyTableClass = self::$m_aAttribOrigins[$sClass][$sKeyAttCode];
$aExtKeys[$sKeyTableClass][$sKeyAttCode][$sAttCode] = $oAttDef;
}
}
}
// First query built upon on the leaf (ie current) class
//
self::DbgTrace("Main (=leaf) class, call MakeQuerySingleTable()");
$oSelectBase = self::MakeQuerySingleTable($sGlobalTargetAlias, $oConditionTree, $aClassAliases, $aTableAliases, $aTranslation, $oFilter, $sClass, $aExpectedAtts, $aExtKeys, $aValues);
// Then we join the queries of the eventual parent classes (compound model)
foreach(self::EnumParentClasses($sClass) as $sParentClass)
{
if (self::DBGetTable($sParentClass) == "") continue;
self::DbgTrace("Parent class: $sParentClass... let's call MakeQuerySingleTable()");
$oSelectParentTable = self::MakeQuerySingleTable($sGlobalTargetAlias, $oConditionTree, $aClassAliases, $aTableAliases, $aTranslation, $oFilter, $sParentClass, $aExpectedAtts, $aExtKeys, $aValues);
$oSelectBase->AddInnerJoin($oSelectParentTable, $sKeyField, self::DBGetKey($sParentClass));
}
// Filter on objects referencing me
foreach ($oFilter->GetCriteria_ReferencedBy() as $sForeignClass => $aKeysAndFilters)
{
foreach ($aKeysAndFilters as $sForeignKeyAttCode => $oForeignFilter)
{
$oForeignKeyAttDef = self::GetAttributeDef($sForeignClass, $sForeignKeyAttCode);
// We don't want any attribute from the foreign class, just filter on an inner join
$aExpAtts = array();
self::DbgTrace("Referenced by foreign key: $sForeignKeyAttCode... let's call MakeQuery()");
//self::DbgTrace($oForeignFilter);
//self::DbgTrace($oForeignFilter->ToSibuSQL());
//self::DbgTrace($oSelectForeign);
//self::DbgTrace($oSelectForeign->RenderSelect(array()));
$oSelectForeign = self::MakeQuery($sGlobalTargetAlias, $oConditionTree, $aClassAliases, $aTableAliases, $aTranslation, $oForeignFilter, $aExpAtts);
$sForeignClassAlias = $oForeignFilter->GetClassAlias();
$sForeignKeyTable = $aTranslation[$sForeignClassAlias][$sForeignKeyAttCode][0];
$sForeignKeyColumn = $aTranslation[$sForeignClassAlias][$sForeignKeyAttCode][1];
$oSelectBase->AddInnerJoin($oSelectForeign, $sKeyField, $sForeignKeyColumn, $sForeignKeyTable);
}
}
// Filter on related objects
//
foreach ($oFilter->GetCriteria_RelatedTo() as $aCritInfo)
{
$oSubFilter = $aCritInfo['flt'];
$sRelCode = $aCritInfo['relcode'];
$iMaxDepth = $aCritInfo['maxdepth'];
// Get the starting point objects
$oStartSet = new CMDBObjectSet($oSubFilter);
// Get the objects related to those objects... recursively...
$aRelatedObjs = $oStartSet->GetRelatedObjects($sRelCode, $iMaxDepth);
$aRestriction = array_key_exists($sRootClass, $aRelatedObjs) ? $aRelatedObjs[$sRootClass] : array();
// #@# todo - related objects and expressions...
// Create condition
if (count($aRestriction) > 0)
{
$oSelectBase->AddCondition($sKeyField.' IN ('.implode(', ', CMDBSource::Quote(array_keys($aRestriction), true)).')');
}
else
{
// Quick N'dirty -> generate an empty set
$oSelectBase->AddCondition('false');
}
}
// Translate the conditions... and go
//
if ($bIsOnQueriedClass)
{
$oConditionTranslated = $oConditionTree->Translate($aTranslation);
$oSelectBase->SetCondition($oConditionTranslated);
}
// That's all... cross fingers and we'll get some working query
//MyHelpers::var_dump_html($oSelectBase, true);
//MyHelpers::var_dump_html($oSelectBase->RenderSelect(), true);
if (self::$m_bDebugQuery) $oSelectBase->DisplayHtml();
return $oSelectBase;
}
protected static function MakeQuerySingleTable($sGlobalTargetAlias, &$oConditionTree, &$aClassAliases, &$aTableAliases, &$aTranslation, $oFilter, $sTableClass, $aExpectedAtts, $aExtKeys, $aValues)
{
// $aExpectedAtts is an array of sAttCode=>sAlias
// $aExtKeys is an array of sTableClass => array of (sAttCode (keys) => array of sAttCode (fields))
// Prepare the query for a single table (compound objects)
// Ignores the items (attributes/filters) that are not on the target table
// Perform an (inner or left) join for every external key (and specify the expected fields)
//
// Returns an SQLQuery
//
$sTargetClass = $oFilter->GetClass();
$sTargetAlias = $oFilter->GetClassAlias();
$sTable = self::DBGetTable($sTableClass);
$sTableAlias = self::GenerateUniqueAlias($aTableAliases, $sTargetAlias.'_'.$sTable, $sTable);
$bIsOnQueriedClass = ($sTargetAlias == $sGlobalTargetAlias);
self::DbgTrace("Entering: tableclass=$sTableClass, filter=".$oFilter->ToSibuSQL().", ".($bIsOnQueriedClass ? "MAIN" : "SECONDARY").", expectedatts=".count($aExpectedAtts).": ".implode(",", $aExpectedAtts));
// 1 - SELECT and UPDATE
//
// Note: no need for any values nor fields for foreign Classes (ie not the queried Class)
//
$aSelect = array();
$aUpdateValues = array();
// 1/a - Get the key
//
if ($bIsOnQueriedClass)
{
$aSelect[$aExpectedAtts['id']] = new FieldExpression(self::DBGetKey($sTableClass), $sTableAlias);
}
// We need one pkey to be the key, let's take the one corresponding to the leaf
if ($sTableClass == $sTargetClass)
{
$aTranslation[$sTargetAlias]['id'] = array($sTableAlias, self::DBGetKey($sTableClass));
}
// 1/b - Get the other attributes
//
foreach(self::ListAttributeDefs($sTableClass) as $sAttCode=>$oAttDef)
{
// Skip this attribute if not defined in this table
if (self::$m_aAttribOrigins[$sTargetClass][$sAttCode] != $sTableClass) continue;
// Skip this attribute if not writable (means that it does not correspond
if (count($oAttDef->DBGetUsedFields()) == 0) continue;
// Update...
//
if ($bIsOnQueriedClass && array_key_exists($sAttCode, $aValues))
{
assert ($oAttDef->IsDirectField());
// Later, we'll have to use $oAttDef->GetDBField();
$aUpdateValues[$oAttDef->GetSQLExpr()] = $oAttDef->RealValueToSQLValue($aValues[$sAttCode]);
}
// Select...
//
// Skip, if a list of fields has been specified and it is not there
if (!array_key_exists($sAttCode, $aExpectedAtts)) continue;
$sAttAlias = $aExpectedAtts[$sAttCode];
if ($oAttDef->IsExternalField())
{
// skip, this will be handled in the joined tables
}
else
{
// standard field, or external key
// add it to the output
$aSelect[$sAttAlias] = new FieldExpression($oAttDef->GetSQLExpr(), $sTableAlias);
}
}
// 2 - WHERE
//
foreach(self::$m_aFilterDefs[$sTargetClass] as $sFltCode => $oFltAtt)
{
// Skip this filter if not defined in this table
if (self::$m_aFilterOrigins[$sTargetClass][$sFltCode] != $sTableClass) continue;
// #@# todo - aller plus loin... a savoir que la table de translation doit contenir une "Expression"
// non-sens: $aTranslation[$sTargetAlias][$sFltCode] = array($sTableAlias, $oFltAtt->GetFilterSQLExpr(opcode, operand));
$aTranslation[$sTargetAlias][$sFltCode] = array($sTableAlias, $oFltAtt->TemporaryGetSQLCol());
}
// #@# todo - See what a full text search condition should be
// 2' - WHERE / Full text search condition
//
if ($bIsOnQueriedClass)
{
$aFullText = $oFilter->GetCriteria_FullText();
}
else
{
// Pourquoi ???
$aFullText = array();
}
// 3 - The whole stuff, for this table only
//
$oSelectBase = new SQLQuery($sTable, $sTableAlias, $aSelect, null, $aFullText, $bIsOnQueriedClass, $aUpdateValues);
// 4 - The external keys -> joins...
//
if (array_key_exists($sTableClass, $aExtKeys))
{
foreach ($aExtKeys[$sTableClass] as $sKeyAttCode => $aExtFields)
{
$oKeyAttDef = self::GetAttributeDef($sTargetClass, $sKeyAttCode);
$oExtFilter = $oFilter->GetCriteria_PointingTo($sKeyAttCode);
// In case the join was not explicitely defined in the filter,
// we need to do it now
if (empty($oExtFilter))
{
$sKeyClass = $oKeyAttDef->GetTargetClass();
$sKeyClassAlias = self::GenerateUniqueAlias($aClassAliases, $sKeyClass.'_'.$sKeyAttCode, $sKeyClass);
$oExtFilter = new DBObjectSearch($sKeyClass, $sKeyClassAlias);
}
else
{
// The aliases should not conflict because normalization occured while building the filter
$sKeyClass = $oExtFilter->GetClass();
$sKeyClassAlias = $oExtFilter->GetClassAlias();
// Note: there is no search condition in $oExtFilter, because normalization did merge the condition onto the top of the filter tree
}
// Specify expected attributes for the target class query
// ... and use the current alias !
$aExpAtts = array();
$aIntermediateTranslation = array();
foreach($aExtFields as $sAttCode => $oAtt)
{
$sExtAttCode = $oAtt->GetExtAttCode();
if (array_key_exists($sAttCode, $aExpectedAtts))
{
// Request this attribute... transmit the alias !
$aExpAtts[$sExtAttCode] = $aExpectedAtts[$sAttCode];
}
// Translate mainclass.extfield => remoteclassalias.remotefieldcode
$oRemoteAttDef = self::GetAttributeDef($sKeyClass, $sExtAttCode);
$sRemoteAttExpr = $oRemoteAttDef->GetSQLExpr();
$aIntermediateTranslation[$sTargetAlias][$sAttCode] = array($sKeyClassAlias, $sRemoteAttExpr);
//#@# debug - echo "<p>$sTargetAlias.$sAttCode to $sKeyClassAlias.$sRemoteAttExpr (class: $sKeyClass)</p>\n";
}
$oConditionTree = $oConditionTree->Translate($aIntermediateTranslation, false);
self::DbgTrace("External key $sKeyAttCode (class: $sKeyClass), call MakeQuery()");
$oSelectExtKey = self::MakeQuery($sGlobalTargetAlias, $oConditionTree, $aClassAliases, $aTableAliases, $aTranslation, $oExtFilter, $aExpAtts);
$sLocalKeyField = $oKeyAttDef->GetSQLExpr();
$sExternalKeyField = self::DBGetKey($sKeyClass);
self::DbgTrace("External key $sKeyAttCode, Join on $sLocalKeyField = $sExternalKeyField");
if ($oKeyAttDef->IsNullAllowed())
{
$oSelectBase->AddLeftJoin($oSelectExtKey, $sLocalKeyField, $sExternalKeyField);
}
else
{
$oSelectBase->AddInnerJoin($oSelectExtKey, $sLocalKeyField, $sExternalKeyField);
}
}
}
//MyHelpers::var_dump_html($oSelectBase->RenderSelect());
return $oSelectBase;
}
public static function GenerateUniqueAlias(&$aAliases, $sNewName, $sRealName)
{
if (!array_key_exists($sNewName, $aAliases))
{
$aAliases[$sNewName] = $sRealName;
return $sNewName;
}
for ($i = 1 ; $i < 100 ; $i++)
{
$sAnAlias = $sNewName.$i;
if (!array_key_exists($sAnAlias, $aAliases))
{
// Create that new alias
$aAliases[$sAnAlias] = $sRealName;
return $sAnAlias;
}
}
throw new CoreException('Failed to create an alias', array('aliases' => $aAliases, 'new'=>$sNewName));
}
public static function CheckDefinitions()
{
if (count(self::GetClasses()) == 0)
{
trigger_error("MetaModel::InitClasses() has not been called, or no class has been declared ?!?!");
exit;
}
$aErrors = array();
$aSugFix = array();
foreach (self::GetClasses() as $sClass)
{
if (self::IsAbstract($sClass)) continue;
$sNameAttCode = self::GetNameAttributeCode($sClass);
if (empty($sNameAttCode))
{
// let's try this !!!
// $aErrors[$sClass][] = "Missing value for name definition: the framework will (should...) replace it by the id";
// $aSugFix[$sClass][] = "Expecting a value in ".implode(", ", self::GetAttributesList($sClass));
}
else if(!self::IsValidAttCode($sClass, $sNameAttCode))
{
$aErrors[$sClass][] = "Unkown attribute code '".$sNameAttCode."' for the name definition";
$aSugFix[$sClass][] = "Expecting a value in ".implode(", ", self::GetAttributesList($sClass));
}
foreach(self::GetReconcKeys($sClass) as $sReconcKeyAttCode)
if (!empty($sReconcKeyAttCode) && !self::IsValidAttCode($sClass, $sReconcKeyAttCode))
{
$aErrors[$sClass][] = "Unkown attribute code '".$sReconcKeyAttCode."' in the list of reconciliation keys";
$aSugFix[$sClass][] = "Expecting a value in ".implode(", ", self::GetAttributesList($sClass));
}
foreach(self::ListAttributeDefs($sClass) as $sAttCode=>$oAttDef)
{
// It makes no sense to check the attributes again and again in the subclasses
if (self::$m_aAttribOrigins[$sClass][$sAttCode] != $sClass) continue;
if ($oAttDef->IsExternalKey())
{
if (!self::IsValidClass($oAttDef->GetTargetClass()))
{
$aErrors[$sClass][] = "Unkown class '".$oAttDef->GetTargetClass()."' for the external key '$sAttCode'";
$aSugFix[$sClass][] = "Expecting a value in {".implode(", ", self::GetClasses())."}";
}
}
elseif ($oAttDef->IsExternalField())
{
$sKeyAttCode = $oAttDef->GetKeyAttCode();
if (!self::IsValidAttCode($sClass, $sKeyAttCode) || !self::IsValidKeyAttCode($sClass, $sKeyAttCode))
{
$aErrors[$sClass][] = "Unkown key attribute code '".$sKeyAttCode."' for the external field $sAttCode";
$aSugFix[$sClass][] = "Expecting a value in {".implode(", ", self::GetKeysList($sClass))."}";
}
else
{
$oKeyAttDef = self::GetAttributeDef($sClass, $sKeyAttCode);
$sTargetClass = $oKeyAttDef->GetTargetClass();
$sExtAttCode = $oAttDef->GetExtAttCode();
if (!self::IsValidAttCode($sTargetClass, $sExtAttCode))
{
$aErrors[$sClass][] = "Unkown key attribute code '".$sExtAttCode."' for the external field $sAttCode";
$aSugFix[$sClass][] = "Expecting a value in {".implode(", ", self::GetKeysList($sTargetClass))."}";
}
}
}
else // standard attributes
{
// Check that the default values definition is a valid object!
$oValSetDef = $oAttDef->GetValuesDef();
if (!is_null($oValSetDef) && !$oValSetDef instanceof ValueSetDefinition)
{
$aErrors[$sClass][] = "Allowed values for attribute $sAttCode is not of the relevant type";
$aSugFix[$sClass][] = "Please set it as an instance of a ValueSetDefinition object.";
}
else
{
// Default value must be listed in the allowed values (if defined)
$aAllowedValues = self::GetAllowedValues_att($sClass, $sAttCode);
if (!is_null($aAllowedValues))
{
$sDefaultValue = $oAttDef->GetDefaultValue();
if (!array_key_exists($sDefaultValue, $aAllowedValues))
{
$aErrors[$sClass][] = "Default value '".$sDefaultValue."' for attribute $sAttCode is not an allowed value";
$aSugFix[$sClass][] = "Please pickup the default value out of {'".implode(", ", array_keys($aAllowedValues))."'}";
}
}
}
}
// Check dependencies
if ($oAttDef->IsWritable())
{
foreach ($oAttDef->GetPrerequisiteAttributes() as $sDependOnAttCode)
{
if (!self::IsValidAttCode($sClass, $sDependOnAttCode))
{
$aErrors[$sClass][] = "Unkown attribute code '".$sDependOnAttCode."' in the list of prerequisite attributes";
$aSugFix[$sClass][] = "Expecting a value in ".implode(", ", self::GetAttributesList($sClass));
}
}
}
}
foreach(self::GetClassFilterDefs($sClass) as $sFltCode=>$oFilterDef)
{
if (method_exists($oFilterDef, '__GetRefAttribute'))
{
$oAttDef = $oFilterDef->__GetRefAttribute();
if (!self::IsValidAttCode($sClass, $oAttDef->GetCode()))
{
$aErrors[$sClass][] = "Wrong attribute code '".$oAttDef->GetCode()."' (wrong class) for the \"basic\" filter $sFltCode";
$aSugFix[$sClass][] = "Expecting a value in {".implode(", ", self::GetAttributesList($sClass))."}";
}
}
}
// Lifecycle
//
$sStateAttCode = self::GetStateAttributeCode($sClass);
if (strlen($sStateAttCode) > 0)
{
// Lifecycle - check that the state attribute does exist as an attribute
if (!self::IsValidAttCode($sClass, $sStateAttCode))
{
$aErrors[$sClass][] = "Unkown attribute code '".$sStateAttCode."' for the state definition";
$aSugFix[$sClass][] = "Expecting a value in {".implode(", ", self::GetAttributesList($sClass))."}";
}
else
{
// Lifecycle - check that there is a value set constraint on the state attribute
$aAllowedValuesRaw = self::GetAllowedValues_att($sClass, $sStateAttCode);
$aStates = array_keys(self::EnumStates($sClass));
if (is_null($aAllowedValuesRaw))
{
$aErrors[$sClass][] = "Attribute '".$sStateAttCode."' will reflect the state of the object. It must be restricted to a set of values";
$aSugFix[$sClass][] = "Please define its allowed_values property as [new ValueSetEnum('".implode(", ", $aStates)."')]";
}
else
{
$aAllowedValues = array_keys($aAllowedValuesRaw);
// Lifecycle - check the the state attribute allowed values are defined states
foreach($aAllowedValues as $sValue)
{
if (!in_array($sValue, $aStates))
{
$aErrors[$sClass][] = "Attribute '".$sStateAttCode."' (object state) has an allowed value ($sValue) which is not a known state";
$aSugFix[$sClass][] = "You may define its allowed_values property as [new ValueSetEnum('".implode(", ", $aStates)."')], or reconsider the list of states";
}
}
// Lifecycle - check that defined states are allowed values
foreach($aStates as $sStateValue)
{
if (!in_array($sStateValue, $aAllowedValues))
{
$aErrors[$sClass][] = "Attribute '".$sStateAttCode."' (object state) has a state ($sStateValue) which is not an allowed value";
$aSugFix[$sClass][] = "You may define its allowed_values property as [new ValueSetEnum('".implode(", ", $aStates)."')], or reconsider the list of states";
}
}
}
// Lifcycle - check that the action handlers are defined
foreach (self::EnumStates($sClass) as $sStateCode => $aStateDef)
{
foreach(self::EnumTransitions($sClass, $sStateCode) as $sStimulusCode => $aTransitionDef)
{
foreach ($aTransitionDef['actions'] as $sActionHandler)
{
if (!method_exists($sClass, $sActionHandler))
{
$aErrors[$sClass][] = "Unknown function '$sActionHandler' in transition [$sStateCode/$sStimulusCode] for state attribute '$sStateAttCode'";
$aSugFix[$sClass][] = "Specify a function which prototype is in the form [public function $sActionHandler(\$sStimulusCode){return true;}]";
}
}
}
}
}
}
// ZList
//
foreach(self::EnumZLists() as $sListCode)
{
foreach (self::GetZListItems($sClass, $sListCode) as $sMyAttCode)
{
if (!self::IsValidAttCode($sClass, $sMyAttCode))
{
$aErrors[$sClass][] = "Unkown attribute code '".$sMyAttCode."' from ZList '$sListCode'";
$aSugFix[$sClass][] = "Expecting a value in {".implode(", ", self::GetAttributesList($sClass))."}";
}
}
}
}
if (count($aErrors) > 0)
{
echo "<div style=\"width:100%;padding:10px;background:#FFAAAA;display:;\">";
echo "<h3>Business model inconsistencies have been found</h3>\n";
// #@# later -> this is the responsibility of the caller to format the output
foreach ($aErrors as $sClass => $aMessages)
{
echo "<p>Wrong declaration for class <b>$sClass</b></p>\n";
echo "<ul class=\"treeview\">\n";
$i = 0;
foreach ($aMessages as $sMsg)
{
echo "<li>$sMsg ({$aSugFix[$sClass][$i]})</li>\n";
$i++;
}
echo "</ul>\n";
}
echo "<p>Aborting...</p>\n";
echo "</div>\n";
exit;
}
}
public static function DBShowApplyForm($sRepairUrl, $sSQLStatementArgName, $aSQLFixes)
{
if (empty($sRepairUrl)) return;
if (count($aSQLFixes) == 0) return;
echo "<form action=\"$sRepairUrl\" method=\"POST\">\n";
echo " <input type=\"hidden\" name=\"$sSQLStatementArgName\" value=\"".htmlentities(implode("##SEP##", $aSQLFixes))."\">\n";
echo " <input type=\"submit\" value=\" Apply the changes (".count($aSQLFixes)." queries) \">\n";
echo "</form>\n";
}
public static function DBExists()
{
// returns true if at least one table exists (taking into account the DB sharing)
// then some tables might be missing, but that is made in DBCheckFormat
//
if (empty(self::$m_sTablePrefix))
{
return CMDBSource::IsDB(self::$m_sDBName);
}
// DB sharing
// Check if there is at least one table with the prefix
//
if (!CMDBSource::IsDB(self::$m_sDBName))
{
return false;
}
CMDBSource::SelectDB(self::$m_sDBName);
// If a table matches the prefix, then consider that the database already exists
$sSQL = "SHOW TABLES LIKE '".strtolower(self::$m_sTablePrefix)."%' ";
$result = CMDBSource::Query($sSQL);
return (CMDBSource::NbRows($result) > 0);
}
public static function DBDrop()
{
$bDropEntireDB = true;
if (!empty(self::$m_sTablePrefix))
{
// Do drop only tables corresponding to the sub-database (table prefix)
// then possibly drop the DB itself (if no table remain)
foreach (CMDBSource::EnumTables() as $sTable)
{
// perform a case insensitive test because on Windows the table names become lowercase :-(
if (strtolower(substr($sTable, 0, strlen(self::$m_sTablePrefix))) == strtolower(self::$m_sTablePrefix))
{
CMDBSource::DropTable($sTable);
}
else
{
// There is at least one table which is out of the scope of the current application
$bDropEntireDB = false;
}
}
}
if ($bDropEntireDB)
{
CMDBSource::DropDB(self::$m_sDBName);
}
}
public static function DBCreate()
{
// Note: we have to check if the DB does exist, because we may share the DB
// with other applications (in which case the DB does exist, not the tables with the given prefix)
if (!CMDBSource::IsDB(self::$m_sDBName))
{
CMDBSource::CreateDB(self::$m_sDBName);
}
self::DBCreateTables();
}
protected static function DBCreateTables()
{
list($aErrors, $aSugFix) = self::DBCheckFormat();
$aSQL = array();
foreach ($aSugFix as $sClass => $aQueries)
{
foreach ($aQueries as $sQuery)
{
//$aSQL[] = $sQuery;
// forces a refresh of cached information
CMDBSource::CreateTable($sQuery);
}
}
// does not work -how to have multiple statements in a single query?
// $sDoCreateAll = implode(" ; ", $aSQL);
}
public static function DBCheckFormat()
{
$aErrors = array();
$aSugFix = array();
foreach (self::GetClasses() as $sClass)
{
if (self::IsAbstract($sClass)) continue;
// Check that the table exists
//
$sTable = self::DBGetTable($sClass);
$sKeyField = self::DBGetKey($sClass);
$sAutoIncrement = (self::IsAutoIncrementKey($sClass) ? "AUTO_INCREMENT" : "");
if (!CMDBSource::IsTable($sTable))
{
$aErrors[$sClass][] = "table '$sTable' could not be found into the DB";
$aSugFix[$sClass][] = "CREATE TABLE `$sTable` (`$sKeyField` INT(11) NOT NULL $sAutoIncrement PRIMARY KEY) ENGINE = innodb";
}
// Check that the key field exists
//
elseif (!CMDBSource::IsField($sTable, $sKeyField))
{
$aErrors[$sClass][] = "key '$sKeyField' (table $sTable) could not be found";
$aSugFix[$sClass][] = "ALTER TABLE `$sTable` ADD `$sKeyField` INT(11) NOT NULL $sAutoIncrement PRIMARY KEY";
}
else
{
// Check the key field properties
//
if (!CMDBSource::IsKey($sTable, $sKeyField))
{
$aErrors[$sClass][] = "key '$sKeyField' is not a key for table '$sTable'";
$aSugFix[$sClass][] = "ALTER TABLE `$sTable`, DROP PRIMARY KEY, ADD PRIMARY key(`$sKeyField`)";
}
if (self::IsAutoIncrementKey($sClass) && !CMDBSource::IsAutoIncrement($sTable, $sKeyField))
{
$aErrors[$sClass][] = "key '$sKeyField' (table $sTable) is not automatically incremented";
$aSugFix[$sClass][] = "ALTER TABLE `$sTable` CHANGE `$sKeyField` `$sKeyField` INT(11) NOT NULL AUTO_INCREMENT";
}
}
// Check that any defined field exists
//
$aTableInfo = CMDBSource::GetTableInfo($sTable);
foreach(self::ListAttributeDefs($sClass) as $sAttCode=>$oAttDef)
{
// Skip this attribute if not originaly defined in this class
if (self::$m_aAttribOrigins[$sClass][$sAttCode] != $sClass) continue;
foreach($oAttDef->DBGetUsedFields() as $sField)
{
$sDBFieldType = $oAttDef->GetDBFieldType();
$sFieldSpecs = $oAttDef->IsNullAllowed() ? "$sDBFieldType NULL" : "$sDBFieldType NOT NULL";
if (!CMDBSource::IsField($sTable, $sField))
{
$aErrors[$sClass][] = "field '$sField' could not be found in table '$sTable'";
$aSugFix[$sClass][] = "ALTER TABLE `$sTable` ADD `$sField` $sFieldSpecs";
}
elseif ($oAttDef->IsNullAllowed() != CMDBSource::IsNullAllowed($sTable, $sField))
{
if ($oAttDef->IsNullAllowed())
{
$aErrors[$sClass][] = "field '$sField' in table '$sTable' could be NULL";
$aSugFix[$sClass][] = "ALTER TABLE `$sTable` CHANGE `$sField` `$sField` $sFieldSpecs";
}
else
{
$aErrors[$sClass][] = "field '$sField' in table '$sTable' could NOT be NULL";
$aSugFix[$sClass][] = "ALTER TABLE `$sTable` CHANGE `$sField` `$sField` $sFieldSpecs";
}
}
}
}
}
return array($aErrors, $aSugFix);
}
private static function DBCheckIntegrity_Check2Delete($sSelWrongRecs, $sErrorDesc, $sClass, &$aErrorsAndFixes, &$iNewDelCount, &$aPlannedDel, $bProcessingFriends = false)
{
$sRootClass = self::GetRootClass($sClass);
$sTable = self::DBGetTable($sClass);
$sKeyField = self::DBGetKey($sClass);
if (array_key_exists($sTable, $aPlannedDel) && count($aPlannedDel[$sTable]) > 0)
{
$sSelWrongRecs .= " AND maintable.`$sKeyField` NOT IN ('".implode("', '", $aPlannedDel[$sTable])."')";
}
$aWrongRecords = CMDBSource::QueryToCol($sSelWrongRecs, "id");
if (count($aWrongRecords) == 0) return;
if (!array_key_exists($sRootClass, $aErrorsAndFixes)) $aErrorsAndFixes[$sRootClass] = array();
if (!array_key_exists($sTable, $aErrorsAndFixes[$sRootClass])) $aErrorsAndFixes[$sRootClass][$sTable] = array();
foreach ($aWrongRecords as $iRecordId)
{
if (array_key_exists($iRecordId, $aErrorsAndFixes[$sRootClass][$sTable]))
{
switch ($aErrorsAndFixes[$sRootClass][$sTable][$iRecordId]['Action'])
{
case 'Delete':
// Already planned for a deletion
// Let's concatenate the errors description together
$aErrorsAndFixes[$sRootClass][$sTable][$iRecordId]['Reason'] .= ', '.$sErrorDesc;
break;
case 'Update':
// Let's plan a deletion
break;
}
}
else
{
$aErrorsAndFixes[$sRootClass][$sTable][$iRecordId]['Reason'] = $sErrorDesc;
}
if (!$bProcessingFriends)
{
if (!array_key_exists($sTable, $aPlannedDel) || !in_array($iRecordId, $aPlannedDel[$sTable]))
{
// Something new to be deleted...
$iNewDelCount++;
}
}
$aErrorsAndFixes[$sRootClass][$sTable][$iRecordId]['Action'] = 'Delete';
$aErrorsAndFixes[$sRootClass][$sTable][$iRecordId]['Action_Details'] = array();
$aErrorsAndFixes[$sRootClass][$sTable][$iRecordId]['Pass'] = 123;
$aPlannedDel[$sTable][] = $iRecordId;
}
// Now make sure that we would delete the records of the other tables for that class
//
if (!$bProcessingFriends)
{
$sDeleteKeys = "'".implode("', '", $aWrongRecords)."'";
foreach (self::EnumChildClasses($sRootClass, ENUM_CHILD_CLASSES_ALL) as $sFriendClass)
{
$sFriendTable = self::DBGetTable($sFriendClass);
$sFriendKey = self::DBGetKey($sFriendClass);
// skip the current table
if ($sFriendTable == $sTable) continue;
$sFindRelatedRec = "SELECT DISTINCT maintable.`$sFriendKey` AS id FROM `$sFriendTable` AS maintable WHERE maintable.`$sFriendKey` IN ($sDeleteKeys)";
self::DBCheckIntegrity_Check2Delete($sFindRelatedRec, "Cascading deletion of record in friend table `<em>$sTable</em>`", $sFriendClass, $aErrorsAndFixes, $iNewDelCount, $aPlannedDel, true);
}
}
}
private static function DBCheckIntegrity_Check2Update($sSelWrongRecs, $sErrorDesc, $sColumn, $sNewValue, $sClass, &$aErrorsAndFixes, &$iNewDelCount, &$aPlannedDel)
{
$sRootClass = self::GetRootClass($sClass);
$sTable = self::DBGetTable($sClass);
$sKeyField = self::DBGetKey($sClass);
if (array_key_exists($sTable, $aPlannedDel) && count($aPlannedDel[$sTable]) > 0)
{
$sSelWrongRecs .= " AND maintable.`$sKeyField` NOT IN ('".implode("', '", $aPlannedDel[$sTable])."')";
}
$aWrongRecords = CMDBSource::QueryToCol($sSelWrongRecs, "id");
if (count($aWrongRecords) == 0) return;
if (!array_key_exists($sRootClass, $aErrorsAndFixes)) $aErrorsAndFixes[$sRootClass] = array();
if (!array_key_exists($sTable, $aErrorsAndFixes[$sRootClass])) $aErrorsAndFixes[$sRootClass][$sTable] = array();
foreach ($aWrongRecords as $iRecordId)
{
if (array_key_exists($iRecordId, $aErrorsAndFixes[$sRootClass][$sTable]))
{
switch ($aErrorsAndFixes[$sRootClass][$sTable][$iRecordId]['Action'])
{
case 'Delete':
// No need to update, the record will be deleted!
break;
case 'Update':
// Already planned for an update
// Add this new update spec to the list
$bFoundSameSpec = false;
foreach ($aErrorsAndFixes[$sRootClass][$sTable][$iRecordId]['Action_Details'] as $aUpdateSpec)
{
if (($sColumn == $aUpdateSpec['column']) && ($sNewValue == $aUpdateSpec['newvalue']))
{
$bFoundSameSpec = true;
}
}
if (!$bFoundSameSpec)
{
$aErrorsAndFixes[$sRootClass][$sTable][$iRecordId]['Action_Details'][] = (array('column' => $sColumn, 'newvalue'=>$sNewValue));
$aErrorsAndFixes[$sRootClass][$sTable][$iRecordId]['Reason'] .= ', '.$sErrorDesc;
}
break;
}
}
else
{
$aErrorsAndFixes[$sRootClass][$sTable][$iRecordId]['Reason'] = $sErrorDesc;
$aErrorsAndFixes[$sRootClass][$sTable][$iRecordId]['Action'] = 'Update';
$aErrorsAndFixes[$sRootClass][$sTable][$iRecordId]['Action_Details'] = array(array('column' => $sColumn, 'newvalue'=>$sNewValue));
$aErrorsAndFixes[$sRootClass][$sTable][$iRecordId]['Pass'] = 123;
}
}
}
// returns the count of records found for deletion
public static function DBCheckIntegrity_SinglePass(&$aErrorsAndFixes, &$iNewDelCount, &$aPlannedDel)
{
foreach (self::GetClasses() as $sClass)
{
if (self::IsAbstract($sClass)) continue;
$sRootClass = self::GetRootClass($sClass);
$sTable = self::DBGetTable($sClass);
$sKeyField = self::DBGetKey($sClass);
// Check that the final class field contains the name of a class which inherited from the current class
//
if (self::HasFinalClassField($sClass))
{
$sFinalClassField = self::DBGetClassField($sClass);
$aAllowedValues = self::EnumChildClasses($sClass, ENUM_CHILD_CLASSES_ALL);
$sAllowedValues = implode(",", CMDBSource::Quote($aAllowedValues, true));
$sSelWrongRecs = "SELECT DISTINCT maintable.`$sKeyField` AS id FROM `$sTable` AS maintable WHERE `$sFinalClassField` NOT IN ($sAllowedValues)";
self::DBCheckIntegrity_Check2Delete($sSelWrongRecs, "final class (field `<em>$sFinalClassField</em>`) is wrong (expected a value in {".$sAllowedValues."})", $sClass, $aErrorsAndFixes, $iNewDelCount, $aPlannedDel);
}
// Compound objects model - node/leaf classes (not the root itself)
//
if (!self::IsStandaloneClass($sClass) && !self::HasFinalClassField($sClass))
{
$sRootTable = self::DBGetTable($sRootClass);
$sRootKey = self::DBGetKey($sRootClass);
$sFinalClassField = self::DBGetClassField($sRootClass);
$aExpectedClasses = self::EnumChildClasses($sClass, ENUM_CHILD_CLASSES_ALL);
$sExpectedClasses = implode(",", CMDBSource::Quote($aExpectedClasses, true));
// Check that any record found here has its counterpart in the root table
// and which refers to a child class
//
$sSelWrongRecs = "SELECT DISTINCT maintable.`$sKeyField` AS id FROM `$sTable` as maintable LEFT JOIN `$sRootTable` ON maintable.`$sKeyField` = `$sRootTable`.`$sRootKey` AND `$sRootTable`.`$sFinalClassField` IN ($sExpectedClasses) WHERE `$sRootTable`.`$sRootKey` IS NULL";
self::DBCheckIntegrity_Check2Delete($sSelWrongRecs, "Found a record in `<em>$sTable</em>`, but no counterpart in root table `<em>$sRootTable</em>` (inc. records pointing to a class in {".$sExpectedClasses."})", $sClass, $aErrorsAndFixes, $iNewDelCount, $aPlannedDel);
// Check that any record found in the root table and referring to a child class
// has its counterpart here (detect orphan nodes -root or in the middle of the hierarchy)
//
$sSelWrongRecs = "SELECT DISTINCT maintable.`$sRootKey` AS id FROM `$sRootTable` AS maintable LEFT JOIN `$sTable` ON maintable.`$sRootKey` = `$sTable`.`$sKeyField` WHERE `$sTable`.`$sKeyField` IS NULL AND maintable.`$sFinalClassField` IN ($sExpectedClasses)";
self::DBCheckIntegrity_Check2Delete($sSelWrongRecs, "Found a record in root table `<em>$sRootTable</em>`, but no counterpart in table `<em>$sTable</em>` (root records pointing to a class in {".$sExpectedClasses."})", $sRootClass, $aErrorsAndFixes, $iNewDelCount, $aPlannedDel);
}
foreach(self::ListAttributeDefs($sClass) as $sAttCode=>$oAttDef)
{
// Skip this attribute if not defined in this table
if (self::$m_aAttribOrigins[$sClass][$sAttCode] != $sClass) continue;
if ($oAttDef->IsExternalKey())
{
// Check that any external field is pointing to an existing object
//
$sRemoteClass = $oAttDef->GetTargetClass();
$sRemoteTable = self::DBGetTable($sRemoteClass);
$sRemoteKey = self::DBGetKey($sRemoteClass);
$sExtKeyField = $oAttDef->GetSQLExpr();
// Note: a class/table may have an external key on itself
$sSelBase = "SELECT DISTINCT maintable.`$sKeyField` AS id, maintable.`$sExtKeyField` AS extkey FROM `$sTable` AS maintable LEFT JOIN `$sRemoteTable` ON maintable.`$sExtKeyField` = `$sRemoteTable`.`$sRemoteKey`";
$sSelWrongRecs = $sSelBase." WHERE `$sRemoteTable`.`$sRemoteKey` IS NULL";
if ($oAttDef->IsNullAllowed())
{
// Exclude the records pointing to 0/null from the errors
$sSelWrongRecs .= " AND maintable.`$sExtKeyField` IS NOT NULL";
$sSelWrongRecs .= " AND maintable.`$sExtKeyField` != 0";
self::DBCheckIntegrity_Check2Update($sSelWrongRecs, "Record pointing to (external key '<em>$sAttCode</em>') non existing objects", $sExtKeyField, 'null', $sClass, $aErrorsAndFixes, $iNewDelCount, $aPlannedDel);
}
else
{
self::DBCheckIntegrity_Check2Delete($sSelWrongRecs, "Record pointing to (external key '<em>$sAttCode</em>') non existing objects", $sClass, $aErrorsAndFixes, $iNewDelCount, $aPlannedDel);
}
// Do almost the same, taking into account the records planned for deletion
if (array_key_exists($sRemoteTable, $aPlannedDel) && count($aPlannedDel[$sRemoteTable]) > 0)
{
// This could be done by the mean of a 'OR ... IN (aIgnoreRecords)
// but in that case you won't be able to track the root cause (cascading)
$sSelWrongRecs = $sSelBase." WHERE maintable.`$sExtKeyField` IN ('".implode("', '", $aPlannedDel[$sRemoteTable])."')";
if ($oAttDef->IsNullAllowed())
{
// Exclude the records pointing to 0/null from the errors
$sSelWrongRecs .= " AND maintable.`$sExtKeyField` IS NOT NULL";
$sSelWrongRecs .= " AND maintable.`$sExtKeyField` != 0";
self::DBCheckIntegrity_Check2Update($sSelWrongRecs, "Record pointing to (external key '<em>$sAttCode</em>') a record planned for deletion", $sExtKeyField, 'null', $sClass, $aErrorsAndFixes, $iNewDelCount, $aPlannedDel);
}
else
{
self::DBCheckIntegrity_Check2Delete($sSelWrongRecs, "Record pointing to (external key '<em>$sAttCode</em>') a record planned for deletion", $sClass, $aErrorsAndFixes, $iNewDelCount, $aPlannedDel);
}
}
}
else if ($oAttDef->IsDirectField())
{
// Check that the values fit the allowed values
//
$aAllowedValues = self::GetAllowedValues_att($sClass, $sAttCode);
if (!is_null($aAllowedValues) && count($aAllowedValues) > 0)
{
$sExpectedValues = implode(",", CMDBSource::Quote(array_keys($aAllowedValues), true));
$sMyAttributeField = $oAttDef->GetSQLExpr();
$sDefaultValue = $oAttDef->GetDefaultValue();
$sSelWrongRecs = "SELECT DISTINCT maintable.`$sKeyField` AS id FROM `$sTable` AS maintable WHERE maintable.`$sMyAttributeField` NOT IN ($sExpectedValues)";
self::DBCheckIntegrity_Check2Update($sSelWrongRecs, "Record having a column ('<em>$sAttCode</em>') with an unexpected value", $sMyAttributeField, CMDBSource::Quote($sDefaultValue), $sClass, $aErrorsAndFixes, $iNewDelCount, $aPlannedDel);
}
}
}
}
}
public static function DBCheckIntegrity($sRepairUrl = "", $sSQLStatementArgName = "")
{
// Records in error, and action to be taken: delete or update
// by RootClass/Table/Record
$aErrorsAndFixes = array();
// Records to be ignored in the current/next pass
// by Table = array of RecordId
$aPlannedDel = array();
// Count of errors in the next pass: no error means that we can leave...
$iErrorCount = 0;
// Limit in case of a bug in the algorythm
$iLoopCount = 0;
$iNewDelCount = 1; // startup...
while ($iNewDelCount > 0)
{
$iNewDelCount = 0;
self::DBCheckIntegrity_SinglePass($aErrorsAndFixes, $iNewDelCount, $aPlannedDel);
$iErrorCount += $iNewDelCount;
// Safety net #1 - limit the planned deletions
//
$iMaxDel = 1000;
$iPlannedDel = 0;
foreach ($aPlannedDel as $sTable => $aPlannedDelOnTable)
{
$iPlannedDel += count($aPlannedDelOnTable);
}
if ($iPlannedDel > $iMaxDel)
{
trigger_error("DB Integrity Check safety net - Exceeding the limit of $iMaxDel planned record deletion", E_USER_WARNING);
break;
}
// Safety net #2 - limit the iterations
//
$iLoopCount++;
$iMaxLoops = 10;
if ($iLoopCount > $iMaxLoops)
{
trigger_error("DB Integrity Check safety net - Reached the limit of $iMaxLoops loops", E_USER_WARNING);
break;
}
}
// Display the results
//
$iIssueCount = 0;
$aFixesDelete = array();
$aFixesUpdate = array();
foreach ($aErrorsAndFixes as $sRootClass => $aTables)
{
foreach ($aTables as $sTable => $aRecords)
{
foreach ($aRecords as $iRecord => $aError)
{
$sAction = $aError['Action'];
$sReason = $aError['Reason'];
$iPass = $aError['Pass'];
switch ($sAction)
{
case 'Delete':
$sActionDetails = "";
$aFixesDelete[$sTable][] = $iRecord;
break;
case 'Update':
$aUpdateDesc = array();
foreach($aError['Action_Details'] as $aUpdateSpec)
{
$aUpdateDesc[] = $aUpdateSpec['column']." -&gt; ".$aUpdateSpec['newvalue'];
$aFixesUpdate[$sTable][$aUpdateSpec['column']][$aUpdateSpec['newvalue']][] = $iRecord;
}
$sActionDetails = "Set ".implode(", ", $aUpdateDesc);
break;
default:
$sActionDetails = "bug: unknown action '$sAction'";
}
$aIssues[] = "$sRootClass / $sTable / $iRecord / $sReason / $sAction / $sActionDetails";
$iIssueCount++;
}
}
}
if ($iIssueCount > 0)
{
// Build the queries to fix in the database
//
// First step, be able to get class data out of the table name
// Could be optimized, because we've made the job earlier... but few benefits, so...
$aTable2ClassProp = array();
foreach (self::GetClasses() as $sClass)
{
if (self::IsAbstract($sClass)) continue;
$sRootClass = self::GetRootClass($sClass);
$sTable = self::DBGetTable($sClass);
$sKeyField = self::DBGetKey($sClass);
$aErrorsAndFixes[$sRootClass][$sTable] = array();
$aTable2ClassProp[$sTable] = array('rootclass'=>$sRootClass, 'class'=>$sClass, 'keyfield'=>$sKeyField);
}
// Second step, build a flat list of SQL queries
$aSQLFixes = array();
$iPlannedUpdate = 0;
foreach ($aFixesUpdate as $sTable => $aColumns)
{
foreach ($aColumns as $sColumn => $aNewValues)
{
foreach ($aNewValues as $sNewValue => $aRecords)
{
$iPlannedUpdate += count($aRecords);
$sWrongRecords = "'".implode("', '", $aRecords)."'";
$sKeyField = $aTable2ClassProp[$sTable]['keyfield'];
$aSQLFixes[] = "UPDATE `$sTable` SET `$sColumn` = $sNewValue WHERE `$sKeyField` IN ($sWrongRecords)";
}
}
}
$iPlannedDel = 0;
foreach ($aFixesDelete as $sTable => $aRecords)
{
$iPlannedDel += count($aRecords);
$sWrongRecords = "'".implode("', '", $aRecords)."'";
$sKeyField = $aTable2ClassProp[$sTable]['keyfield'];
$aSQLFixes[] = "DELETE FROM `$sTable` WHERE `$sKeyField` IN ($sWrongRecords)";
}
// Report the results
//
echo "<div style=\"width:100%;padding:10px;background:#FFAAAA;display:;\">";
echo "<h3>Database corruption error(s): $iErrorCount issues have been encountered. $iPlannedDel records will be deleted, $iPlannedUpdate records will be updated:</h3>\n";
// #@# later -> this is the responsibility of the caller to format the output
echo "<ul class=\"treeview\">\n";
foreach ($aIssues as $sIssueDesc)
{
echo "<li>$sIssueDesc</li>\n";
}
echo "</ul>\n";
self::DBShowApplyForm($sRepairUrl, $sSQLStatementArgName, $aSQLFixes);
echo "<p>Aborting...</p>\n";
echo "</div>\n";
exit;
}
}
public static function Startup($sConfigFile, $bAllowMissingDB = false)
{
self::LoadConfig($sConfigFile);
if (self::DBExists())
{
CMDBSource::SelectDB(self::$m_sDBName);
}
else
{
if (!$bAllowMissingDB)
{
throw new CoreException('Database not found, check your configuration file', array('config_file'=>$sConfigFile, 'db_name'=>self::$m_sDBName));
}
}
}
public static function LoadConfig($sConfigFile)
{
$oConfig = new Config($sConfigFile);
foreach ($oConfig->GetAppModules() as $sModule => $sToInclude)
{
self::Plugin($sConfigFile, 'application', $sToInclude);
}
foreach ($oConfig->GetDataModels() as $sModule => $sToInclude)
{
self::Plugin($sConfigFile, 'business', $sToInclude);
}
foreach ($oConfig->GetAddons() as $sModule => $sToInclude)
{
self::Plugin($sConfigFile, 'addons', $sToInclude);
}
$sServer = $oConfig->GetDBHost();
$sUser = $oConfig->GetDBUser();
$sPwd = $oConfig->GetDBPwd();
$sSource = $oConfig->GetDBName();
$sTablePrefix = $oConfig->GetDBSubname();
// The include have been included, let's browse the existing classes and
// develop some data based on the proposed model
self::InitClasses($sTablePrefix);
self::$m_sDBName = $sSource;
self::$m_sTablePrefix = $sTablePrefix;
CMDBSource::Init($sServer, $sUser, $sPwd); // do not select the DB (could not exist)
}
protected static function Plugin($sConfigFile, $sModuleType, $sToInclude)
{
if (!file_exists($sToInclude))
{
throw new CoreException('Wrong filename in configuration file', array('file' => $sConfigFile, 'module' => $sModuleType, 'filename' => $sToInclude));
}
require_once($sToInclude);
}
// Building an object
//
//
public static function MakeSingleRow($sClass, $iKey)
{
$oFilter = new DBObjectSearch($sClass);
$oFilter->AddCondition('id', $iKey, '=');
$sSQL = self::MakeSelectQuery($oFilter);
//echo "$sSQL</br>\n";
$res = CMDBSource::Query($sSQL);
$aRow = CMDBSource::FetchArray($res);
CMDBSource::FreeResult($res);
if (empty($aRow))
{
trigger_error("No result for the single row query: '$sSQL'");
}
return $aRow;
}
public static function GetObjectByRow($sClass, $aRow)
{
self::_check_subclass($sClass);
// Compound objects: if available, get the final object class
//
if (!array_key_exists("finalclass", $aRow))
{
// Either this is a bug (forgot to specify a root class with a finalclass field
// Or this is the expected behavior, because the object is not made of several tables
}
elseif (empty($aRow["finalclass"]))
{
// The data is missing in the DB
// @#@ possible improvement: check that the class is valid !
$sRootClass = self::GetRootClass($sClass);
$sFinalClassField = self::DBGetClassField($sRootClass);
trigger_error("Empty class name for object $sClass::{$aRow["id"]} (root class '$sRootClass', field '{$sFinalClassField}' is empty)", E_USER_ERROR);
}
else
{
// do the job for the real target class
$sClass = $aRow["finalclass"];
}
return new $sClass($aRow);
}
public static function GetObject($sClass, $iKey)
{
self::_check_subclass($sClass);
$aRow = self::MakeSingleRow($sClass, $iKey);
if (empty($aRow))
{
// #@# exception ?
return null;
}
return self::GetObjectByRow($sClass, $aRow);
}
public static function NewObject($sClass)
{
self::_check_subclass($sClass);
return new $sClass();
}
public static function BulkDelete(DBObjectSearch $oFilter)
{
$sSQL = self::MakeDeleteQuery($oFilter);
CMDBSource::Query($sSQL);
}
public static function BulkUpdate(DBObjectSearch $oFilter, array $aValues)
{
// $aValues is an array of $sAttCode => $value
$sSQL = self::MakeUpdateQuery($oFilter, $aValues);
CMDBSource::Query($sSQL);
}
// Links
//
//
public static function EnumReferencedClasses($sClass)
{
self::_check_subclass($sClass);
// 1-N links (referenced by my class), returns an array of sAttCode=>sClass
$aResult = array();
foreach(self::$m_aAttribDefs[$sClass] as $sAttCode=>$oAttDef)
{
if ($oAttDef->IsExternalKey())
{
$aResult[$sAttCode] = $oAttDef->GetTargetClass();
}
}
return $aResult;
}
public static function EnumReferencingClasses($sClass, $bSkipLinkingClasses = false)
{
self::_check_subclass($sClass);
$aLinksClasses = self::EnumLinksClasses();
// 1-N links (referencing my class), array of sClass => array of sAttcode
$aResult = array();
foreach (self::$m_aAttribDefs as $sSomeClass=>$aClassAttributes)
{
if ($bSkipLinkingClasses && in_array($sSomeClass, $aLinksClasses)) continue;
$aExtKeys = array();
foreach ($aClassAttributes as $sAttCode=>$oAttDef)
{
if (self::$m_aAttribOrigins[$sSomeClass][$sAttCode] != $sSomeClass) continue;
if ($oAttDef->IsExternalKey() && ($oAttDef->GetTargetClass() == $sClass))
{
$aExtKeys[] = $sAttCode;
}
}
if (count($aExtKeys) != 0)
{
$aResult[$sSomeClass] = $aExtKeys;
}
}
return $aResult;
}
public static function EnumLinksClasses()
{
// Returns a flat array of classes having at least two external keys
$aResult = array();
foreach (self::$m_aAttribDefs as $sSomeClass=>$aClassAttributes)
{
$iExtKeyCount = 0;
foreach ($aClassAttributes as $sAttCode=>$oAttDef)
{
if (self::$m_aAttribOrigins[$sSomeClass][$sAttCode] != $sSomeClass) continue;
if ($oAttDef->IsExternalKey())
{
$iExtKeyCount++;
}
}
if ($iExtKeyCount >= 2)
{
$aResult[] = $sSomeClass;
}
}
return $aResult;
}
public static function EnumLinkingClasses($sClass = "")
{
// N-N links, array of sLinkClass => (array of sAttCode=>sClass)
$aResult = array();
foreach (self::EnumLinksClasses() as $sSomeClass)
{
$aTargets = array();
$bFoundClass = false;
foreach (self::ListAttributeDefs($sSomeClass) as $sAttCode=>$oAttDef)
{
if (self::$m_aAttribOrigins[$sSomeClass][$sAttCode] != $sSomeClass) continue;
if ($oAttDef->IsExternalKey())
{
$sRemoteClass = $oAttDef->GetTargetClass();
if (empty($sClass))
{
$aTargets[$sAttCode] = $sRemoteClass;
}
elseif ($sClass == $sRemoteClass)
{
$bFoundClass = true;
}
else
{
$aTargets[$sAttCode] = $sRemoteClass;
}
}
}
if (empty($sClass) || $bFoundClass)
{
$aResult[$sSomeClass] = $aTargets;
}
}
return $aResult;
}
public static function GetLinkLabel($sLinkClass, $sAttCode)
{
self::_check_subclass($sLinkClass);
// e.g. "supported by" (later: $this->GetLinkLabel(), computed on link data!)
return self::GetLabel($sLinkClass, $sAttCode);
}
} // class MetaModel
// Standard attribute lists
MetaModel::RegisterZList("noneditable", array("description"=>"non editable fields", "type"=>"attributes"));
MetaModel::RegisterZList("details", array("description"=>"All attributes to be displayed for the 'details' of an object", "type"=>"attributes"));
MetaModel::RegisterZList("list", array("description"=>"All attributes to be displayed for a list of objects", "type"=>"attributes"));
MetaModel::RegisterZList("preview", array("description"=>"All attributes visible in preview mode", "type"=>"attributes"));
MetaModel::RegisterZList("standard_search", array("description"=>"List of criteria for the standard search", "type"=>"filters"));
MetaModel::RegisterZList("advanced_search", array("description"=>"List of criteria for the advanced search", "type"=>"filters"));
?>