Files
iTop/core/dbobjectsearch.class.php
2012-08-06 13:43:26 +00:00

1286 lines
42 KiB
PHP

<?php
// Copyright (C) 2010 Combodo SARL
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; version 3 of the License.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
/**
* Define filters for a given class of objects (formerly named "filter")
*
* @author Erwan Taloc <erwan.taloc@combodo.com>
* @author Romain Quetiez <romain.quetiez@combodo.com>
* @author Denis Flaven <denis.flaven@combodo.com>
* @license http://www.opensource.org/licenses/gpl-3.0.html LGPL
*/
define('TREE_OPERATOR_EQUALS', 0);
define('TREE_OPERATOR_BELOW', 1);
define('TREE_OPERATOR_BELOW_STRICT', 2);
define('TREE_OPERATOR_NOT_BELOW', 3);
define('TREE_OPERATOR_NOT_BELOW_STRICT', 4);
define('TREE_OPERATOR_ABOVE', 5);
define('TREE_OPERATOR_ABOVE_STRICT', 6);
define('TREE_OPERATOR_NOT_ABOVE', 7);
define('TREE_OPERATOR_NOT_ABOVE_STRICT', 8);
class DBObjectSearch
{
private $m_aClasses; // queried classes (alias => class name), the first item is the class corresponding to this filter (the rest is coming from subfilters)
private $m_aSelectedClasses; // selected for the output (alias => class name)
private $m_oSearchCondition;
private $m_aParams;
private $m_aFullText;
private $m_aPointingTo;
private $m_aReferencedBy;
private $m_aRelatedTo;
private $m_bDataFiltered;
// By default, some information may be hidden to the current user
// But it may happen that we need to disable that feature
private $m_bAllowAllData = false;
public function __construct($sClass, $sClassAlias = null)
{
if (is_null($sClassAlias)) $sClassAlias = $sClass;
assert('is_string($sClass)');
assert('MetaModel::IsValidClass($sClass)'); // #@# could do better than an assert, or at least give the caller's reference
// => idee d'un assert avec call stack (autre utilisation = echec sur query SQL)
$this->m_aSelectedClasses = array($sClassAlias => $sClass);
$this->m_aClasses = array($sClassAlias => $sClass);
$this->m_oSearchCondition = new TrueExpression;
$this->m_aParams = array();
$this->m_aFullText = array();
$this->m_aPointingTo = array();
$this->m_aReferencedBy = array();
$this->m_aRelatedTo = array();
$this->m_bDataFiltered = false;
$this->m_aParentConditions = array();
$this->m_aModifierProperties = array();
}
public function AllowAllData() {$this->m_bAllowAllData = true;}
public function IsAllDataAllowed() {return $this->m_bAllowAllData;}
public function IsDataFiltered() {return $this->m_bDataFiltered; }
public function SetDataFiltered() {$this->m_bDataFiltered = true;}
public function GetClassName($sAlias)
{
if (array_key_exists($sAlias, $this->m_aClasses))
{
return $this->m_aClasses[$sAlias];
}
else
{
throw new CoreException("Invalid class alias '$sAlias'");
}
}
public function GetJoinedClasses() {return $this->m_aClasses;}
public function GetClass()
{
return reset($this->m_aSelectedClasses);
}
public function GetClassAlias()
{
reset($this->m_aSelectedClasses);
return key($this->m_aSelectedClasses);
}
public function GetFirstJoinedClass()
{
return reset($this->m_aClasses);
}
public function GetFirstJoinedClassAlias()
{
reset($this->m_aClasses);
return key($this->m_aClasses);
}
public function SetSelectedClasses($aNewSet)
{
$this->m_aSelectedClasses = array();
foreach ($aNewSet as $sAlias => $sClass)
{
if (!array_key_exists($sAlias, $this->m_aClasses))
{
throw new CoreException('Unexpected class alias', array('alias'=>$sAlias, 'expected'=>$this->m_aClasses));
}
$this->m_aSelectedClasses[$sAlias] = $sClass;
}
}
public function GetSelectedClasses()
{
return $this->m_aSelectedClasses;
}
public function SetModifierProperty($sPluginClass, $sProperty, $value)
{
$this->m_aModifierProperties[$sPluginClass][$sProperty] = $value;
}
public function GetModifierProperties($sPluginClass)
{
if (array_key_exists($sPluginClass, $this->m_aModifierProperties))
{
return $this->m_aModifierProperties[$sPluginClass];
}
else
{
return array();
}
}
public function IsAny()
{
// #@# todo - if (!$this->m_oSearchCondition->IsTrue()) return false;
if (count($this->m_aFullText) > 0) return false;
if (count($this->m_aPointingTo) > 0) return false;
if (count($this->m_aReferencedBy) > 0) return false;
if (count($this->m_aRelatedTo) > 0) return false;
if (count($this->m_aParentConditions) > 0) return false;
return true;
}
public function Describe()
{
// To replace __Describe
}
public function DescribeConditionPointTo($sExtKeyAttCode, $aPointingTo)
{
if (empty($aPointingTo)) return "";
foreach($aPointingTo as $iOperatorCode => $oFilter)
{
if ($oFilter->IsAny()) break;
$oAtt = MetaModel::GetAttributeDef($this->GetClass(), $sExtKeyAttCode);
$sOperator = '';
switch($iOperatorCode)
{
case TREE_OPERATOR_EQUALS:
$sOperator = 'having';
break;
case TREE_OPERATOR_BELOW:
$sOperator = 'below';
break;
case TREE_OPERATOR_BELOW_STRICT:
$sOperator = 'strictly below';
break;
case TREE_OPERATOR_NOT_BELOW:
$sOperator = 'not below';
break;
case TREE_OPERATOR_NOT_BELOW_STRICT:
$sOperator = 'strictly not below';
break;
case TREE_OPERATOR_ABOVE:
$sOperator = 'above';
break;
case TREE_OPERATOR_ABOVE_STRICT:
$sOperator = 'strictly above';
break;
case TREE_OPERATOR_NOT_ABOVE:
$sOperator = 'not above';
break;
case TREE_OPERATOR_NOT_ABOVE_STRICT:
$sOperator = 'strictly not above';
break;
}
$aDescription[] = $oAtt->GetLabel()."$sOperator ({$oFilter->DescribeConditions()})";
}
return implode(' and ', $aDescription);
}
public function DescribeConditionRefBy($sForeignClass, $sForeignExtKeyAttCode)
{
if (!isset($this->m_aReferencedBy[$sForeignClass][$sForeignExtKeyAttCode])) return "";
$oFilter = $this->m_aReferencedBy[$sForeignClass][$sForeignExtKeyAttCode];
if ($oFilter->IsAny()) return "";
$oAtt = MetaModel::GetAttributeDef($sForeignClass, $sForeignExtKeyAttCode);
return "being ".$oAtt->GetLabel()." for ".$sForeignClass."s in ({$oFilter->DescribeConditions()})";
}
public function DescribeConditionRelTo($aRelInfo)
{
$oFilter = $aRelInfo['flt'];
$sRelCode = $aRelInfo['relcode'];
$iMaxDepth = $aRelInfo['maxdepth'];
return "related ($sRelCode... peut mieux faire !, $iMaxDepth dig depth) to a {$oFilter->GetClass()} ({$oFilter->DescribeConditions()})";
}
public function DescribeConditions()
{
$aConditions = array();
$aCondFT = array();
foreach($this->m_aFullText as $sFullText)
{
$aCondFT[] = " contain word(s) '$sFullText'";
}
if (count($aCondFT) > 0)
{
$aConditions[] = "which ".implode(" and ", $aCondFT);
}
// #@# todo - review textual description of the JOIN and search condition (is that still feasible?)
$aConditions[] = $this->RenderCondition();
$aCondPoint = array();
foreach($this->m_aPointingTo as $sExtKeyAttCode => $aPointingTo)
{
$aCondPoint[] = $this->DescribeConditionPointTo($sExtKeyAttCode, $aPointingTo);
}
if (count($aCondPoint) > 0)
{
$aConditions[] = implode(" and ", $aCondPoint);
}
$aCondReferred= array();
foreach($this->m_aReferencedBy as $sForeignClass=>$aReferences)
{
foreach($aReferences as $sForeignExtKeyAttCode=>$oForeignFilter)
{
if ($oForeignFilter->IsAny()) continue;
$aCondReferred[] = $this->DescribeConditionRefBy($sForeignClass, $sForeignExtKeyAttCode);
}
}
foreach ($this->m_aRelatedTo as $aRelInfo)
{
$aCondReferred[] = $this->DescribeConditionRelTo($aRelInfo);
}
if (count($aCondReferred) > 0)
{
$aConditions[] = implode(" and ", $aCondReferred);
}
foreach ($this->m_aParentConditions as $aRelInfo)
{
$aCondReferred[] = $this->DescribeConditionParent($aRelInfo);
}
return implode(" and ", $aConditions);
}
public function __DescribeHTML()
{
try
{
$sConditionDesc = $this->DescribeConditions();
}
catch (MissingQueryArgument $e)
{
$sConditionDesc = '?missing query argument?';
}
if (!empty($sConditionDesc))
{
return "Objects of class '".$this->GetClass()."', $sConditionDesc";
}
return "Any object of class '".$this->GetClass()."'";
}
protected function TransferConditionExpression($oFilter, $aTranslation)
{
// Prevent collisions in the parameter names by renaming them if needed
foreach($this->m_aParams as $sParam => $value)
{
if (array_key_exists($sParam, $oFilter->m_aParams) && ($value != $oFilter->m_aParams[$sParam]))
{
// Generate a new and unique name for the collinding parameter
$index = 1;
while(array_key_exists($sParam.$index, $oFilter->m_aParams))
{
$index++;
}
$secondValue = $oFilter->m_aParams[$sParam];
$oFilter->RenameParam($sParam, $sParam.$index);
unset($oFilter->m_aParams[$sParam]);
$oFilter->m_aParams[$sParam.$index] = $secondValue;
}
}
//echo "<p>TransferConditionExpression:<br/>";
//echo "Adding Conditions:<br/><pre>oFilter:\n".print_r($oFilter, true)."\naTranslation:\n".print_r($aTranslation, true)."</pre>\n";
//echo "</p>";
$oTranslated = $oFilter->GetCriteria()->Translate($aTranslation, false, false /* leave unresolved fields */);
//echo "Adding Conditions (translated):<br/><pre>".print_r($oTranslated, true)."</pre>\n";
$this->AddConditionExpression($oTranslated);
$this->m_aParams = array_merge($this->m_aParams, $oFilter->m_aParams);
}
protected function RenameParam($sOldName, $sNewName)
{
$this->m_oSearchCondition->RenameParam($sOldName, $sNewName);
foreach($this->m_aRelatedTo as $aRelatedTo)
{
$aRelatedTo['flt']->RenameParam($sOldName, $sNewName);
}
foreach($this->m_aPointingTo as $sExtKeyAttCode=>$aPointingTo)
{
foreach($aPointingTo as $iOperatorCode => $aFilter)
{
foreach($aFilter as $sAlias => $oExtFilter)
{
$oExtFilter->RenameParam($sOldName, $sNewName);
}
}
}
foreach($this->m_aReferencedBy as $sForeignClass => $aReferences)
{
foreach($aReferences as $sForeignExtKeyAttCode => $oForeignFilter)
{
$oForeignFilter->RenameParam($sOldName, $sNewName);
}
}
foreach($this->m_aParentConditions as $aParent)
{
$aParent['expression']->RenameParam($sOldName, $sNewName);
}
}
public function ResetCondition()
{
$this->m_oSearchCondition = new TrueExpression();
$this->m_aParentConditions = array();
// ? is that usefull/enough, do I need to rebuild the list after the subqueries ?
}
public function MergeConditionExpression($oExpression)
{
$this->m_oSearchCondition = $this->m_oSearchCondition->LogOr($oExpression);
}
public function AddConditionExpression($oExpression)
{
$this->m_oSearchCondition = $this->m_oSearchCondition->LogAnd($oExpression);
}
public function AddNameCondition($sName)
{
$oValueExpr = new ScalarExpression($sName);
$oNameExpr = new FieldExpression('friendlyname', $this->GetClassAlias());
$oNewCondition = new BinaryExpression($oNameExpr, '=', $oValueExpr);
$this->AddConditionExpression($oNewCondition);
}
public function AddCondition($sFilterCode, $value, $sOpCode = null)
{
MyHelpers::CheckKeyInArray('filter code', $sFilterCode, MetaModel::GetClassFilterDefs($this->GetClass()));
$oFilterDef = MetaModel::GetClassFilterDef($this->GetClass(), $sFilterCode);
$oField = new FieldExpression($sFilterCode, $this->GetClassAlias());
if (empty($sOpCode))
{
if ($sFilterCode == 'id')
{
$sOpCode = '=';
}
else
{
$oAttDef = MetaModel::GetAttributeDef($this->GetClass(), $sFilterCode);
$oNewCondition = $oAttDef->GetSmartConditionExpression($value, $oField, $this->m_aParams);
$this->AddConditionExpression($oNewCondition);
return;
}
}
MyHelpers::CheckKeyInArray('operator', $sOpCode, $oFilterDef->GetOperators());
// Preserve backward compatibility - quick n'dirty way to change that API semantic
//
switch($sOpCode)
{
case 'SameDay':
case 'SameMonth':
case 'SameYear':
case 'Today':
case '>|':
case '<|':
case '=|':
throw new CoreException('Deprecated operator, please consider using OQL (SQL) expressions like "(TO_DAYS(NOW()) - TO_DAYS(x)) AS AgeDays"', array('operator' => $sOpCode));
break;
case "IN":
if (!is_array($value)) $value = array($value);
$sListExpr = '('.implode(', ', CMDBSource::Quote($value)).')';
$sOQLCondition = $oField->Render()." IN $sListExpr";
break;
case "NOTIN":
if (!is_array($value)) $value = array($value);
$sListExpr = '('.implode(', ', CMDBSource::Quote($value)).')';
$sOQLCondition = $oField->Render()." NOT IN $sListExpr";
break;
case 'Contains':
$this->m_aParams[$sFilterCode] = "%$value%";
$sOperator = 'LIKE';
break;
case 'Begins with':
$this->m_aParams[$sFilterCode] = "$value%";
$sOperator = 'LIKE';
break;
case 'Finishes with':
$this->m_aParams[$sFilterCode] = "%$value";
$sOperator = 'LIKE';
break;
default:
$this->m_aParams[$sFilterCode] = $value;
$sOperator = $sOpCode;
}
switch($sOpCode)
{
case "IN":
case "NOTIN":
$oNewCondition = Expression::FromOQL($sOQLCondition);
break;
case 'Contains':
case 'Begins with':
case 'Finishes with':
default:
$oRightExpr = new VariableExpression($sFilterCode);
$oNewCondition = new BinaryExpression($oField, $sOperator, $oRightExpr);
}
$this->AddConditionExpression($oNewCondition);
}
/**
* Specify a condition on external keys or link sets
* @param sAttSpec Can be either an attribute code or extkey->[sAttSpec] or linkset->[sAttSpec] and so on, recursively
* Example: infra_list->ci_id->location_id->country
* @param value The value to match
* @return void
*/
public function AddConditionAdvanced($sAttSpec, $value)
{
$sClass = $this->GetClass();
$iPos = strpos($sAttSpec, '->');
if ($iPos !== false)
{
$sAttCode = substr($sAttSpec, 0, $iPos);
$sSubSpec = substr($sAttSpec, $iPos + 2);
if (!MetaModel::IsValidAttCode($sClass, $sAttCode))
{
throw new Exception("Invalid attribute code '$sClass/$sAttCode' in condition specification '$sAttSpec'");
}
$oAttDef = MetaModel::GetAttributeDef($sClass, $sAttCode);
if ($oAttDef->IsLinkSet())
{
$sTargetClass = $oAttDef->GetLinkedClass();
$sExtKeyToMe = $oAttDef->GetExtKeyToMe();
$oNewFilter = new DBObjectSearch($sTargetClass);
$oNewFilter->AddConditionAdvanced($sSubSpec, $value);
$this->AddCondition_ReferencedBy($oNewFilter, $sExtKeyToMe);
}
elseif ($oAttDef->IsExternalKey(EXTKEY_ABSOLUTE))
{
$sTargetClass = $oAttDef->GetTargetClass(EXTKEY_ABSOLUTE);
$oNewFilter = new DBObjectSearch($sTargetClass);
$oNewFilter->AddConditionAdvanced($sSubSpec, $value);
$this->AddCondition_PointingTo($oNewFilter, $sAttCode);
}
else
{
throw new Exception("Attribute specification '$sAttSpec', '$sAttCode' should be either a link set or an external key");
}
}
else
{
// $sAttSpec is an attribute code
//
$this->AddCondition($sAttSpec, $value);
}
}
public function AddCondition_FullText($sFullText)
{
$this->m_aFullText[] = $sFullText;
}
public function AddCondition_Parent($sAttCode, $iOperatorCode, $oExpression)
{
$oAttDef = MetaModel::GetAttributeDef($this->GetClass(), $sAttCode);
if (!$oAttDef instanceof AttributeHierarchicalKey)
{
throw new Exception("AddCondition_Parent can only be used on hierarchical keys. '$sAttCode' is not a hierarchical key.");
}
$this->m_aParentConditions[] = array(
'attCode' => $sAttCode,
'operator' => $iOperatorCode,
'expression' => $oExpression,
);
}
protected function AddToNameSpace(&$aClassAliases, &$aAliasTranslation, $bTranslateMainAlias = true)
{
if ($bTranslateMainAlias)
{
$sOrigAlias = $this->GetClassAlias();
if (array_key_exists($sOrigAlias, $aClassAliases))
{
$sNewAlias = MetaModel::GenerateUniqueAlias($aClassAliases, $sOrigAlias, $this->GetClass());
//echo "<p>Generating a new alias for $sOrigAlias (already used). It is now: $sNewAlias</p>\n";
$this->m_aSelectedClasses[$sNewAlias] = $this->GetClass();
unset($this->m_aSelectedClasses[$sOrigAlias]);
$this->m_aClasses[$sNewAlias] = $this->GetClass();
unset($this->m_aClasses[$sOrigAlias]);
// Translate the condition expression with the new alias
$aAliasTranslation[$sOrigAlias]['*'] = $sNewAlias;
}
//echo "<p>Adding the alias ".$this->GetClass()." as ".$this->GetClassAlias()."</p>\n";
// add the alias into the filter aliases list
$aClassAliases[$this->GetClassAlias()] = $this->GetClass();
}
foreach($this->m_aPointingTo as $sExtKeyAttCode=>$aPointingTo)
{
foreach($aPointingTo as $iOperatorCode => $aFilter)
{
foreach($aFilter as $sAlias => $oFilter)
{
$oFilter->AddToNameSpace($aClassAliases, $aAliasTranslation);
}
}
}
foreach($this->m_aReferencedBy as $sForeignClass=>$aReferences)
{
foreach($aReferences as $sForeignExtKeyAttCode=>$oForeignFilter)
{
$oForeignFilter->AddToNameSpace($aClassAliases, $aAliasTranslation);
}
}
}
public function AddCondition_PointingTo(DBObjectSearch $oFilter, $sExtKeyAttCode, $iOperatorCode = TREE_OPERATOR_EQUALS)
{
$aAliasTranslation = array();
$res = $this->AddCondition_PointingTo_InNameSpace($oFilter, $sExtKeyAttCode, $this->m_aClasses, $aAliasTranslation, $iOperatorCode);
$this->TransferConditionExpression($oFilter, $aAliasTranslation);
return $res;
}
protected function AddCondition_PointingTo_InNameSpace(DBObjectSearch $oFilter, $sExtKeyAttCode, &$aClassAliases, &$aAliasTranslation, $iOperatorCode)
{
//echo "<p style=\"color:green\">Calling: AddCondition_PointingTo_InNameSpace([<pre>".print_r($aClassAliases, true)."</pre></br>], [<pre>".print_r($aAliasTranslation, true)."</pre>]);</p>";
if (!MetaModel::IsValidKeyAttCode($this->GetClass(), $sExtKeyAttCode))
{
throw new CoreWarning("The attribute code '$sExtKeyAttCode' is not an external key of the class '{$this->GetClass()}' - the condition will be ignored");
}
$oAttExtKey = MetaModel::GetAttributeDef($this->GetClass(), $sExtKeyAttCode);
if(!MetaModel::IsSameFamilyBranch($oFilter->GetClass(), $oAttExtKey->GetTargetClass()))
{
throw new CoreException("The specified filter (pointing to {$oFilter->GetClass()}) is not compatible with the key '{$this->GetClass()}::$sExtKeyAttCode', which is pointing to {$oAttExtKey->GetTargetClass()}");
}
if(($iOperatorCode != TREE_OPERATOR_EQUALS) && !($oAttExtKey instanceof AttributeHierarchicalKey))
{
throw new CoreException("The specified tree operator $iOperatorCode is not applicable to the key '{$this->GetClass()}::$sExtKeyAttCode', which is not a HierarchicalKey");
}
$bSamePointingTo = false;
if (array_key_exists($sExtKeyAttCode, $this->m_aPointingTo))
{
if (array_key_exists($iOperatorCode, $this->m_aPointingTo[$sExtKeyAttCode]))
{
if (array_key_exists($oFilter->GetClassAlias(), $this->m_aPointingTo[$sExtKeyAttCode][$iOperatorCode]))
{
//echo "<p style=\"color:red\">[".__LINE__."]this->m_aPointingTo[$sExtKeyAttCode][$iOperatorCode][".$oFilter->GetFirstJoinedClassAlias()."]:<pre>\n".print_r($this->m_aPointingTo[$sExtKeyAttCode][$iOperatorCode], true)."</pre>;</p>";
$bSamePointingTo = true;
}
}
}
//echo "<p style=\"color:red\">[".__LINE__."]Calling: AddToNameSpace([".implode(',', $aClassAliases)."], [".implode(',', $aAliasTranslation)."]);</p>";
if ($bSamePointingTo)
{
//echo "<p style=\"color:red\">[".__LINE__."]AddPointingTo: Merging filters for [$sExtKeyAttCode][$iOperatorCode][".$oFilter->GetClassAlias()."]</p>";
// Same ext key, alias and same operator, merge the filters together
// $sAlias = $oFilter->GetClassAlias();
//echo "<p style=\"color:red\">[".__LINE__."]before: AddToNameSpace(aClassAliases[<pre>\n".print_r($aClassAliases, true)."</pre>], aAliasTranslation[<pre>\n".print_r($aAliasTranslation, true)."</pre>]);</p>";
$oFilter->AddToNamespace($aClassAliases, $aAliasTranslation, true /* Don't translate the main alias */);
//echo "<p style=\"color:blue\">[".__LINE__."]after: AddToNameSpace(aClassAliases[<pre>\n".print_r($aClassAliases, true)."</pre>], aAliasTranslation[<pre>\n".print_r($aAliasTranslation, true)."</pre>]);</p>";
// $this->m_aPointingTo[$sExtKeyAttCode][$iOperatorCode][$sAlias]->MergeWith($oFilter, $aClassAliases, $aAliasTranslation);
$this->m_aPointingTo[$sExtKeyAttCode][$iOperatorCode][$oFilter->GetClassAlias()] = $oFilter;
}
else
{
//echo "<p style=\"color:red\">[".__LINE__."]AddPointingTo: Adding a new PointingTo filter for [$sExtKeyAttCode][$iOperatorCode][".$oFilter->GetClassAlias()."]</p>";
$oFilter->AddToNamespace($aClassAliases, $aAliasTranslation);
$this->m_aPointingTo[$sExtKeyAttCode][$iOperatorCode][$oFilter->GetClassAlias()] = $oFilter;
}
}
public function AddCondition_ReferencedBy(DBObjectSearch $oFilter, $sForeignExtKeyAttCode)
{
$aAliasTranslation = array();
$res = $this->AddCondition_ReferencedBy_InNameSpace($oFilter, $sForeignExtKeyAttCode, $this->m_aClasses, $aAliasTranslation);
$this->TransferConditionExpression($oFilter, $aAliasTranslation);
return $res;
}
protected function AddCondition_ReferencedBy_InNameSpace(DBObjectSearch $oFilter, $sForeignExtKeyAttCode, &$aClassAliases, &$aAliasTranslation)
{
$sForeignClass = $oFilter->GetClass();
$sForeignClassAlias = $oFilter->GetClassAlias();
if (!MetaModel::IsValidKeyAttCode($sForeignClass, $sForeignExtKeyAttCode))
{
throw new CoreException("The attribute code '$sForeignExtKeyAttCode' is not an external key of the class '{$sForeignClass}' - the condition will be ignored");
}
$oAttExtKey = MetaModel::GetAttributeDef($sForeignClass, $sForeignExtKeyAttCode);
if(!MetaModel::IsSameFamilyBranch($this->GetClass(), $oAttExtKey->GetTargetClass()))
{
throw new CoreException("The specified filter (objects referencing an object of class {$this->GetClass()}) is not compatible with the key '{$sForeignClass}::$sForeignExtKeyAttCode', which is pointing to {$oAttExtKey->GetTargetClass()}");
}
if (array_key_exists($sForeignClass, $this->m_aReferencedBy) && array_key_exists($sForeignExtKeyAttCode, $this->m_aReferencedBy[$sForeignClass]))
{
$this->m_aReferencedBy[$sForeignClass][$sForeignExtKeyAttCode]->MergeWith_InNamespace($oFilter, $aClassAliases, $aAliasTranslation);
}
else
{
$oFilter->AddToNamespace($aClassAliases, $aAliasTranslation);
// #@# The condition expression found in that filter should not be used - could be another kind of structure like a join spec tree !!!!
//$oNewFilter = clone $oFilter;
//$oNewFilter->ResetCondition();
$this->m_aReferencedBy[$sForeignClass][$sForeignExtKeyAttCode]= $oFilter;
}
}
public function AddCondition_LinkedTo(DBObjectSearch $oLinkFilter, $sExtKeyAttCodeToMe, $sExtKeyAttCodeTarget, DBObjectSearch $oFilterTarget)
{
$oLinkFilterFinal = clone $oLinkFilter;
// todo : new function prototype
$oLinkFilterFinal->AddCondition_PointingTo($sExtKeyAttCodeToMe);
$this->AddCondition_ReferencedBy($oLinkFilterFinal, $sExtKeyAttCodeToMe);
}
public function AddCondition_RelatedTo(DBObjectSearch $oFilter, $sRelCode, $iMaxDepth)
{
MyHelpers::CheckValueInArray('relation code', $sRelCode, MetaModel::EnumRelations());
$this->m_aRelatedTo[] = array('flt'=>$oFilter, 'relcode'=>$sRelCode, 'maxdepth'=>$iMaxDepth);
}
public function MergeWith($oFilter)
{
$aAliasTranslation = array();
$res = $this->MergeWith_InNamespace($oFilter, $this->m_aClasses, $aAliasTranslation);
$this->TransferConditionExpression($oFilter, $aAliasTranslation);
return $res;
}
protected function MergeWith_InNamespace($oFilter, &$aClassAliases, &$aAliasTranslation)
{
if ($this->GetClass() != $oFilter->GetClass())
{
throw new CoreException("Attempting to merge a filter of class '{$this->GetClass()}' with a filter of class '{$oFilter->GetClass()}'");
}
// Translate search condition into our aliasing scheme
$aAliasTranslation[$oFilter->GetClassAlias()]['*'] = $this->GetClassAlias();
$this->m_aFullText = array_merge($this->m_aFullText, $oFilter->m_aFullText);
$this->m_aRelatedTo = array_merge($this->m_aRelatedTo, $oFilter->m_aRelatedTo);
foreach($oFilter->m_aPointingTo as $sExtKeyAttCode=>$aPointingTo)
{
foreach($aPointingTo as $iOperatorCode => $aFilter)
{
foreach($aFilter as $sAlias => $oExtFilter)
{
$this->AddCondition_PointingTo_InNamespace($oExtFilter, $sExtKeyAttCode, $aClassAliases, $aAliasTranslation, $iOperatorCode);
}
}
}
foreach($oFilter->m_aReferencedBy as $sForeignClass => $aReferences)
{
foreach($aReferences as $sForeignExtKeyAttCode => $oForeignFilter)
{
$this->AddCondition_ReferencedBy_InNamespace($oForeignFilter, $sForeignExtKeyAttCode, $aClassAliases, $aAliasTranslation);
}
}
}
public function GetCriteria() {return $this->m_oSearchCondition;}
public function GetCriteria_FullText() {return $this->m_aFullText;}
public function GetCriteria_PointingTo($sKeyAttCode = "")
{
if (empty($sKeyAttCode))
{
return $this->m_aPointingTo;
}
if (!array_key_exists($sKeyAttCode, $this->m_aPointingTo)) return array();
return $this->m_aPointingTo[$sKeyAttCode];
}
public function GetCriteria_ReferencedBy($sRemoteClass = "", $sForeignExtKeyAttCode = "")
{
if (empty($sRemoteClass))
{
return $this->m_aReferencedBy;
}
if (!array_key_exists($sRemoteClass, $this->m_aReferencedBy)) return null;
if (empty($sForeignExtKeyAttCode))
{
return $this->m_aReferencedBy[$sRemoteClass];
}
if (!array_key_exists($sForeignExtKeyAttCode, $this->m_aReferencedBy[$sRemoteClass])) return null;
return $this->m_aReferencedBy[$sRemoteClass][$sForeignExtKeyAttCode];
}
public function GetCriteria_RelatedTo()
{
return $this->m_aRelatedTo;
}
public function SetInternalParams($aParams)
{
return $this->m_aParams = $aParams;
}
public function GetInternalParams()
{
return $this->m_aParams;
}
public function GetQueryParams()
{
$aParams = array();
$this->m_oSearchCondition->Render($aParams, true);
return $aParams;
}
public function ListConstantFields()
{
return $this->m_oSearchCondition->ListConstantFields();
}
public function RenderCondition()
{
return $this->m_oSearchCondition->Render($this->m_aParams, false);
}
/**
* Turn the parameters (:xxx) into scalar values in order to easily
* serialize a search
*/
public function ApplyParameters($aArgs)
{
return $this->m_oSearchCondition->ApplyParameters(array_merge($this->m_aParams, $aArgs));
}
public function serialize($bDevelopParams = false, $aContextParams = null)
{
$sOql = $this->ToOql($bDevelopParams, $aContextParams);
return base64_encode(serialize(array($sOql, $this->m_aParams, $this->m_aModifierProperties)));
}
static public function unserialize($sValue)
{
$aData = unserialize(base64_decode($sValue));
$sOql = $aData[0];
$aParams = $aData[1];
// We've tried to use gzcompress/gzuncompress, but for some specific queries
// it was not working at all (See Trac #193)
// gzuncompress was issuing a warning "data error" and the return object was null
$oRetFilter = self::FromOQL($sOql, $aParams);
$oRetFilter->m_aModifierProperties = $aData[2];
return $oRetFilter;
}
// SImple BUt Structured Query Languag - SubuSQL
//
static private function Value2Expression($value)
{
$sRet = $value;
if (is_array($value))
{
$sRet = VS_START.implode(', ', $value).VS_END;
}
else if (!is_numeric($value))
{
$sRet = "'".addslashes($value)."'";
}
return $sRet;
}
static private function Expression2Value($sExpr)
{
$retValue = $sExpr;
if ((substr($sExpr, 0, 1) == "'") && (substr($sExpr, -1, 1) == "'"))
{
$sNoQuotes = substr($sExpr, 1, -1);
return stripslashes($sNoQuotes);
}
if ((substr($sExpr, 0, 1) == VS_START) && (substr($sExpr, -1, 1) == VS_END))
{
$sNoBracket = substr($sExpr, 1, -1);
$aRetValue = array();
foreach (explode(",", $sNoBracket) as $sItem)
{
$aRetValue[] = self::Expression2Value(trim($sItem));
}
return $aRetValue;
}
return $retValue;
}
// Alternative to object mapping: the data are transfered directly into an array
// This is 10 times faster than creating a set of objects, and makes sense when optimization is required
public function ToDataArray($aColumns = array(), $aOrderBy = array(), $aArgs = array())
{
$sSQL = MetaModel::MakeSelectQuery($this, $aOrderBy, $aArgs);
$resQuery = CMDBSource::Query($sSQL);
if (!$resQuery) return;
if (count($aColumns) == 0)
{
$aColumns = array_keys(MetaModel::ListAttributeDefs($this->GetClass()));
// Add the standard id (as first column)
array_unshift($aColumns, 'id');
}
$aQueryCols = CMDBSource::GetColumns($resQuery);
$sClassAlias = $this->GetClassAlias();
$aColMap = array();
foreach ($aColumns as $sAttCode)
{
$sColName = $sClassAlias.$sAttCode;
if (in_array($sColName, $aQueryCols))
{
$aColMap[$sAttCode] = $sColName;
}
}
$aRes = array();
while ($aRow = CMDBSource::FetchArray($resQuery))
{
$aMappedRow = array();
foreach ($aColMap as $sAttCode => $sColName)
{
$aMappedRow[$sAttCode] = $aRow[$sColName];
}
$aRes[] = $aMappedRow;
}
CMDBSource::FreeResult($resQuery);
return $aRes;
}
public function ToOQL($bDevelopParams = false, $aContextParams = null)
{
// Currently unused, but could be useful later
$bRetrofitParams = false;
if ($bDevelopParams)
{
if (is_null($aContextParams))
{
$aParams = array_merge($this->m_aParams);
}
else
{
$aParams = array_merge($aContextParams, $this->m_aParams);
}
}
else
{
// Leave it as is, the rendering will be made with parameters in clear
$aParams = null;
}
$sSelectedClasses = implode(', ', array_keys($this->m_aSelectedClasses));
$sRes = 'SELECT '.$sSelectedClasses.' FROM';
$sRes .= ' '.$this->GetFirstJoinedClass().' AS '.$this->GetFirstJoinedClassAlias();
$sRes .= $this->ToOQL_Joins();
$sRes .= " WHERE ".$this->m_oSearchCondition->Render($aParams, $bRetrofitParams);
// Temporary: add more info about other conditions, necessary to avoid strange behaviors with the cache
foreach($this->m_aFullText as $sFullText)
{
$sRes .= " AND MATCHES '$sFullText'";
}
return $sRes;
}
protected function ToOQL_Joins()
{
$sRes = '';
foreach($this->m_aPointingTo as $sExtKey => $aPointingTo)
{
foreach($aPointingTo as $iOperatorCode => $aFilter)
{
foreach($aFilter as $sAlias => $oFilter)
{
switch($iOperatorCode)
{
case TREE_OPERATOR_EQUALS:
$sOperator = ' = ';
break;
case TREE_OPERATOR_BELOW:
$sOperator = ' BELOW ';
break;
case TREE_OPERATOR_BELOW_STRICT:
$sOperator = ' BELOW STRICT ';
break;
case TREE_OPERATOR_NOT_BELOW:
$sOperator = ' NOT BELOW ';
break;
case TREE_OPERATOR_NOT_BELOW_STRICT:
$sOperator = ' NOT BELOW STRICT ';
break;
case TREE_OPERATOR_ABOVE:
$sOperator = ' ABOVE ';
break;
case TREE_OPERATOR_ABOVE_STRICT:
$sOperator = ' ABOVE STRICT ';
break;
case TREE_OPERATOR_NOT_ABOVE:
$sOperator = ' NOT ABOVE ';
break;
case TREE_OPERATOR_NOT_ABOVE_STRICT:
$sOperator = ' NOT ABOVE STRICT ';
break;
}
$sRes .= ' JOIN '.$oFilter->GetClass().' AS '.$oFilter->GetClassAlias().' ON '.$this->GetClassAlias().'.'.$sExtKey.$sOperator.$oFilter->GetClassAlias().'.id';
$sRes .= $oFilter->ToOQL_Joins();
}
}
}
foreach($this->m_aReferencedBy as $sForeignClass=>$aReferences)
{
foreach($aReferences as $sForeignExtKeyAttCode=>$oForeignFilter)
{
$sRes .= ' JOIN '.$oForeignFilter->GetClass().' AS '.$oForeignFilter->GetClassAlias().' ON '.$oForeignFilter->GetClassAlias().'.'.$sForeignExtKeyAttCode.' = '.$this->GetClassAlias().'.id';
$sRes .= $oForeignFilter->ToOQL_Joins();
}
}
return $sRes;
}
protected function OQLExpressionToCondition($sQuery, $oExpression, $aClassAliases)
{
if ($oExpression instanceof BinaryOqlExpression)
{
$sOperator = $oExpression->GetOperator();
$oLeft = $this->OQLExpressionToCondition($sQuery, $oExpression->GetLeftExpr(), $aClassAliases);
$oRight = $this->OQLExpressionToCondition($sQuery, $oExpression->GetRightExpr(), $aClassAliases);
return new BinaryExpression($oLeft, $sOperator, $oRight);
}
elseif ($oExpression instanceof FieldOqlExpression)
{
$sClassAlias = $oExpression->GetParent();
$sFltCode = $oExpression->GetName();
if (empty($sClassAlias))
{
// Try to find an alias
// Build an array of field => array of aliases
$aFieldClasses = array();
foreach($aClassAliases as $sAlias => $sReal)
{
foreach(MetaModel::GetFiltersList($sReal) as $sAnFltCode)
{
$aFieldClasses[$sAnFltCode][] = $sAlias;
}
}
if (!array_key_exists($sFltCode, $aFieldClasses))
{
throw new OqlNormalizeException('Unknown filter code', $sQuery, $oExpression->GetNameDetails(), array_keys($aFieldClasses));
}
if (count($aFieldClasses[$sFltCode]) > 1)
{
throw new OqlNormalizeException('Ambiguous filter code', $sQuery, $oExpression->GetNameDetails());
}
$sClassAlias = $aFieldClasses[$sFltCode][0];
}
else
{
if (!array_key_exists($sClassAlias, $aClassAliases))
{
throw new OqlNormalizeException('Unknown class [alias]', $sQuery, $oExpression->GetParentDetails(), array_keys($aClassAliases));
}
$sClass = $aClassAliases[$sClassAlias];
if (!MetaModel::IsValidFilterCode($sClass, $sFltCode))
{
throw new OqlNormalizeException('Unknown filter code', $sQuery, $oExpression->GetNameDetails(), MetaModel::GetFiltersList($sClass));
}
}
return new FieldExpression($sFltCode, $sClassAlias);
}
elseif ($oExpression instanceof VariableOqlExpression)
{
return new VariableExpression($oExpression->GetName());
}
elseif ($oExpression instanceof TrueOqlExpression)
{
return new TrueExpression;
}
elseif ($oExpression instanceof ScalarOqlExpression)
{
return new ScalarExpression($oExpression->GetValue());
}
elseif ($oExpression instanceof ListOqlExpression)
{
$aItems = array();
foreach ($oExpression->GetItems() as $oItemExpression)
{
$aItems[] = $this->OQLExpressionToCondition($sQuery, $oItemExpression, $aClassAliases);
}
return new ListExpression($aItems);
}
elseif ($oExpression instanceof FunctionOqlExpression)
{
$aArgs = array();
foreach ($oExpression->GetArgs() as $oArgExpression)
{
$aArgs[] = $this->OQLExpressionToCondition($sQuery, $oArgExpression, $aClassAliases);
}
return new FunctionExpression($oExpression->GetVerb(), $aArgs);
}
elseif ($oExpression instanceof IntervalOqlExpression)
{
return new IntervalExpression($oExpression->GetValue(), $oExpression->GetUnit());
}
else
{
throw new CoreException('Unknown expression type', array('class'=>get_class($oExpression), 'query'=>$sQuery));
}
}
// Create a search definition that leads to 0 result, still a valid search object
static public function FromEmptySet($sClass)
{
$oResultFilter = new DBObjectSearch($sClass);
$oResultFilter->m_oSearchCondition = new FalseExpression;
return $oResultFilter;
}
static protected $m_aOQLQueries = array();
// Do not filter out depending on user rights
// In particular when we are currently in the process of evaluating the user rights...
static public function FromOQL_AllData($sQuery, $aParams = null)
{
$oRes = self::FromOQL($sQuery, $aParams);
$oRes->AllowAllData();
return $oRes;
}
static public function FromOQL($sQuery, $aParams = null)
{
if (empty($sQuery)) return null;
// Query caching
$bOQLCacheEnabled = true;
if ($bOQLCacheEnabled && array_key_exists($sQuery, self::$m_aOQLQueries))
{
// hit!
return clone self::$m_aOQLQueries[$sQuery];
}
$oOql = new OqlInterpreter($sQuery);
$oOqlQuery = $oOql->ParseObjectQuery();
$sClass = $oOqlQuery->GetClass();
$sClassAlias = $oOqlQuery->GetClassAlias();
if (!MetaModel::IsValidClass($sClass))
{
throw new UnknownClassOqlException($sQuery, $oOqlQuery->GetClassDetails(), MetaModel::GetClasses());
}
$oResultFilter = new DBObjectSearch($sClass, $sClassAlias);
$aAliases = array($sClassAlias => $sClass);
// Maintain an array of filters, because the flat list is in fact referring to a tree
// And this will be an easy way to dispatch the conditions
// $oResultFilter will be referenced by the other filters, or the other way around...
$aJoinItems = array($sClassAlias => $oResultFilter);
$aJoinSpecs = $oOqlQuery->GetJoins();
if (is_array($aJoinSpecs))
{
foreach ($aJoinSpecs as $oJoinSpec)
{
$sJoinClass = $oJoinSpec->GetClass();
$sJoinClassAlias = $oJoinSpec->GetClassAlias();
if (!MetaModel::IsValidClass($sJoinClass))
{
throw new UnknownClassOqlException($sQuery, $oJoinSpec->GetClassDetails(), MetaModel::GetClasses());
}
if (array_key_exists($sJoinClassAlias, $aAliases))
{
if ($sJoinClassAlias != $sJoinClass)
{
throw new OqlNormalizeException('Duplicate class alias', $sQuery, $oJoinSpec->GetClassAliasDetails());
}
else
{
throw new OqlNormalizeException('Duplicate class name', $sQuery, $oJoinSpec->GetClassDetails());
}
}
// Assumption: ext key on the left only !!!
// normalization should take care of this
$oLeftField = $oJoinSpec->GetLeftField();
$sFromClass = $oLeftField->GetParent();
$sExtKeyAttCode = $oLeftField->GetName();
$oRightField = $oJoinSpec->GetRightField();
$sToClass = $oRightField->GetParent();
$sPKeyDescriptor = $oRightField->GetName();
if ($sPKeyDescriptor != 'id')
{
throw new OqlNormalizeException('Wrong format for Join clause (right hand), expecting an id', $sQuery, $oRightField->GetNameDetails(), array('id'));
}
$aAliases[$sJoinClassAlias] = $sJoinClass;
$aJoinItems[$sJoinClassAlias] = new DBObjectSearch($sJoinClass, $sJoinClassAlias);
if (!array_key_exists($sFromClass, $aJoinItems))
{
throw new OqlNormalizeException('Unknown class in join condition (left expression)', $sQuery, $oLeftField->GetParentDetails(), array_keys($aJoinItems));
}
if (!array_key_exists($sToClass, $aJoinItems))
{
throw new OqlNormalizeException('Unknown class in join condition (right expression)', $sQuery, $oRightField->GetParentDetails(), array_keys($aJoinItems));
}
$aExtKeys = array_keys(MetaModel::GetExternalKeys($aAliases[$sFromClass]));
if (!in_array($sExtKeyAttCode, $aExtKeys))
{
throw new OqlNormalizeException('Unknown external key in join condition (left expression)', $sQuery, $oLeftField->GetNameDetails(), $aExtKeys);
}
if ($sFromClass == $sJoinClassAlias)
{
$aJoinItems[$sToClass]->AddCondition_ReferencedBy($aJoinItems[$sFromClass], $sExtKeyAttCode);
}
else
{
$sOperator = $oJoinSpec->GetOperator();
switch($sOperator)
{
case '=':
$iOperatorCode = TREE_OPERATOR_EQUALS;
break;
case 'BELOW':
$iOperatorCode = TREE_OPERATOR_BELOW;
break;
case 'BELOW_STRICT':
$iOperatorCode = TREE_OPERATOR_BELOW_STRICT;
break;
case 'NOT_BELOW':
$iOperatorCode = TREE_OPERATOR_NOT_BELOW;
break;
case 'NOT_BELOW_STRICT':
$iOperatorCode = TREE_OPERATOR_NOT_BELOW_STRICT;
break;
case 'ABOVE':
$iOperatorCode = TREE_OPERATOR_ABOVE;
break;
case 'ABOVE_STRICT':
$iOperatorCode = TREE_OPERATOR_ABOVE_STRICT;
break;
case 'NOT_ABOVE':
$iOperatorCode = TREE_OPERATOR_NOT_ABOVE;
break;
case 'NOT_ABOVE_STRICT':
$iOperatorCode = TREE_OPERATOR_NOT_ABOVE_STRICT;
break;
}
$aJoinItems[$sFromClass]->AddCondition_PointingTo($aJoinItems[$sToClass], $sExtKeyAttCode, $iOperatorCode);
}
}
}
// Check and prepare the select information
$aSelected = array();
foreach ($oOqlQuery->GetSelectedClasses() as $oClassDetails)
{
$sClassToSelect = $oClassDetails->GetValue();
if (!array_key_exists($sClassToSelect, $aAliases))
{
throw new OqlNormalizeException('Unknown class [alias]', $sQuery, $oClassDetails, array_keys($aAliases));
}
$aSelected[$sClassToSelect] = $aAliases[$sClassToSelect];
}
$oResultFilter->m_aClasses = $aAliases;
$oResultFilter->SetSelectedClasses($aSelected);
$oConditionTree = $oOqlQuery->GetCondition();
if ($oConditionTree instanceof Expression)
{
$oResultFilter->m_oSearchCondition = $oResultFilter->OQLExpressionToCondition($sQuery, $oConditionTree, $aAliases);
}
if (!is_null($aParams))
{
$oResultFilter->m_aParams = $aParams;
}
if ($bOQLCacheEnabled)
{
self::$m_aOQLQueries[$sQuery] = clone $oResultFilter;
}
return $oResultFilter;
}
public function toxpath()
{
// #@# a voir...
}
static public function fromxpath()
{
// #@# a voir...
}
}
?>