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Implementation of a new type of ExternalKey attribute: HierarchicalKey. This attribute implements the "nested set" model and is used to define a hierarchy of an arbitrary depth of objects of the same class. With this new feature it is possible to retrieve in one OQL query (and in one sql query as well) all the children of a given organization.

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I'm still keeping (commented out) some of the traces helpful for debugging the construction of the OQL queries.

SVN:trunk[1349]
This commit is contained in:
Denis Flaven
2011-07-22 12:07:09 +00:00
parent b80cc36fb5
commit 7e60a9fce7
13 changed files with 1566 additions and 822 deletions
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110
core/attributedef.class.inc.php
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@@ -167,6 +167,7 @@ abstract class AttributeDefinition
public function IsScalar() {return false;}
public function IsLinkSet() {return false;}
public function IsExternalKey($iType = EXTKEY_RELATIVE) {return false;}
public function IsHierarchicalKey() {return false;}
public function IsExternalField() {return false;}
public function IsWritable() {return false;}
public function IsNullAllowed() {return true;}
@@ -2422,6 +2423,115 @@ class AttributeExternalKey extends AttributeDBFieldVoid
}
}
/**
* Special kind of External Key to manage a hierarchy of objects
*/
class AttributeHierarchicalKey extends AttributeExternalKey
{
static protected function ListExpectedParams()
{
$aParams = parent::ListExpectedParams();
//unset($aParams[array_search('targetclass', $aParams)]);
//print_r($aParams);
return $aParams; // TODO: mettre les bons parametres ici !!
}
public function GetEditClass() {return "ExtKey";}
public function RequiresIndex()
{
return true;
}
public function IsHierarchicalKey() {return true;}
public function GetKeyAttDef($iType = EXTKEY_RELATIVE){return $this;}
public function GetKeyAttCode() {return $this->GetCode();}
public function GetBasicFilterOperators()
{
return parent::GetBasicFilterOperators();
}
public function GetBasicFilterLooseOperator()
{
return parent::GetBasicFilterLooseOperator();
}
public function GetSQLColumns()
{
$aColumns = array();
$aColumns[$this->GetCode()] = 'INT(11)';
$aColumns[$this->GetSQLLeft()] = 'INT(11)';
$aColumns[$this->GetSQLRight()] = 'INT(11)';
return $aColumns;
}
public function GetSQLRight()
{
return $this->GetCode().'_right';
}
public function GetSQLLeft()
{
return $this->GetCode().'_left';
}
public function GetSQLValues($value)
{
if (!is_array($value))
{
$aValues[$this->GetCode()] = $value;
}
else
{
$aValues = array();
$aValues[$this->GetCode()] = $value[$this->GetCode()];
$aValues[$this->GetSQLRight()] = $value[$this->GetSQLRight()];
$aValues[$this->GetSQLLeft()] = $value[$this->GetSQLLeft()];
}
return $aValues;
}
public function GetAllowedValues($aArgs = array(), $sContains = '')
{
if (array_key_exists('this', $aArgs))
{
// Hierarchical keys have one more constraint: the "parent value" cannot be
// "under" themselves
$iRootId = $aArgs['this']->GetKey();
if ($iRootId > 0) // ignore objects that do no exist in the database...
{
$oValSetDef = $this->GetValuesDef();
$sClass = $this->GetHostClass(); // host class == target class for HK
$oFilter = DBObjectSearch::FromOQL("SELECT $sClass AS node JOIN $sClass AS root ON node.".$this->GetCode()." NOT BELOW root.id WHERE root.id = $iRootId");
$oValSetDef->AddCondition($oFilter);
}
}
else
{
return parent::GetAllowedValues($aArgs, $sContains);
}
}
public function GetAllowedValuesAsObjectSet($aArgs = array(), $sContains = '')
{
$oValSetDef = $this->GetValuesDef();
if (array_key_exists('this', $aArgs))
{
// Hierarchical keys have one more constraint: the "parent value" cannot be
// "under" themselves
$iRootId = $aArgs['this']->GetKey();
if ($iRootId > 0) // ignore objects that do no exist in the database...
{
$aValuesSetDef = $this->GetValuesDef();
$sClass = $this->GetHostClass(); // host class == target class for HK
$oFilter = DBObjectSearch::FromOQL("SELECT $sClass AS node JOIN $sClass AS root ON node.".$this->GetCode()." NOT BELOW root.id WHERE root.id = $iRootId");
$oValSetDef->AddCondition($oFilter);
}
}
$oSet = $oValSetDef->ToObjectSet($aArgs, $sContains);
return $oSet;
}
}
/**
* An attribute which corresponds to an external key (direct or indirect)
*