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Deletion of objects:

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- automatic delete of mandatory ext keys, and if the option is set in the data model (I've set the "manual" option by default, and the "auto" option for links)
- automatic reset of optional ext keys (several keys could be updated on one single object)
- takes into account the user rights
- security against the use of page arguments when the automatic deletion is not allowed
Known limitations:
- does not check that resetting an ext key could affect the lifecycle consistency (e.g. delete a workgroup referenced by a ticket)
- does not check recursively on the automatic deletion, which should not be a problem given the current data model (TBC)

SVN:code[181]
This commit is contained in:
Romain Quetiez
2009-09-18 16:12:38 +00:00
parent 637993e7eb
commit 2e9f13c4c5
20 changed files with 415 additions and 131 deletions
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67
trunk/core/dbobject.class.php
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@@ -856,20 +856,79 @@ abstract class DBObject
{
foreach($aExtKeys as $sExtKeyAttCode => $oExtKeyAttDef)
{
//$oAttDef = MetaModel::GetAttributeDef($sClass, $sExtKeyAttCode);
// skip if this external key is behind an external field
if (!$oExtKeyAttDef->IsExternalKey(EXTKEY_ABSOLUTE)) continue;
$oSearch = new DBObjectSearch($sRemoteClass);
$oSearch->AddCondition($sExtKeyAttCode, $this->GetKey());
$oSet = new CMDBObjectSet($oSearch);
//if ($oSet->Count() > 0)
while ($oDependentObj = $oSet->fetch())
if ($oSet->Count() > 0)
{
$aDependentObjects[$sRemoteClass][] = $oDependentObj;
$aDependentObjects[$sRemoteClass][$sExtKeyAttCode] = array(
'attribute' => $oExtKeyAttDef,
'objects' => $oSet,
);
}
}
}
return $aDependentObjects;
}
public function GetDeletionScheme()
{
$aDependentObjects = $this->GetReferencingObjects();
$aDeletedObjs = array(); // [class][key] => structure
$aResetedObjs = array(); // [class][key] => object
foreach ($aDependentObjects as $sRemoteClass => $aPotentialDeletes)
{
foreach ($aPotentialDeletes as $sRemoteExtKey => $aData)
{
$oAttDef = $aData['attribute'];
$iDeletePropagationOption = $oAttDef->GetDeletionPropagationOption();
$oDepSet = $aData['objects'];
$oDepSet->Rewind();
while ($oDependentObj = $oDepSet->fetch())
{
$iId = $oDependentObj->GetKey();
if ($oAttDef->IsNullAllowed())
{
// Optional external key, list to reset
if (!array_key_exists($sRemoteClass, $aResetedObjs) || !array_key_exists($iId, $aResetedObjs[$sRemoteClass]))
{
$aResetedObjs[$sRemoteClass][$iId]['to_reset'] = $oDependentObj;
}
$aResetedObjs[$sRemoteClass][$iId]['attributes'][$sRemoteExtKey] = $oAttDef;
}
else
{
// Mandatory external key, list to delete
if (array_key_exists($sRemoteClass, $aDeletedObjs) && array_key_exists($iId, $aDeletedObjs[$sRemoteClass]))
{
$iCurrentOption = $aDeletedObjs[$sRemoteClass][$iId];
if ($iCurrentOption == DEL_AUTO)
{
// be conservative, take the new option
// (DEL_MANUAL has precedence over DEL_AUTO)
$aDeletedObjs[$sRemoteClass][$iId]['auto_delete'] = ($iDeletePropagationOption == DEL_AUTO);
}
else
{
// DEL_MANUAL... leave it as is, it HAS to be verified anyway
}
}
else
{
// First time we find the given object in the list
// (and most likely case is that no other occurence will be found)
$aDeletedObjs[$sRemoteClass][$iId]['to_delete'] = $oDependentObj;
$aDeletedObjs[$sRemoteClass][$iId]['auto_delete'] = ($iDeletePropagationOption == DEL_AUTO);
}
}
}
}
}
return array($aDeletedObjs, $aResetedObjs);
}
}