public function Equals($val1, $val2)
{
if ($val1 === $val2) {
return true;
}
if (is_object($val1) != is_object($val2)) {
return false;
}
if (!is_object($val1)) {
// string ?
// todo = implement this case ?
return false;
}
// Note: maintain this algorithm so as to make sure it is strictly equivalent to the one used within DBObject::DBWriteLinks()
$sExtKeyToMe = $this->GetExtKeyToMe();
$sAdditionalKey = null;
if ($this->IsIndirect() && !$this->DuplicatesAllowed()) {
$sAdditionalKey = $this->GetExtKeyToRemote();
}
$oComparator = new DBObjectSetComparator($val1, $val2, array($sExtKeyToMe), $sAdditionalKey);
$aChanges = $oComparator->GetDifferences();
$bAreEquivalent = count($aChanges['added']) == 0 && count($aChanges['removed']) == 0 && count($aChanges['modified']) == 0;
return $bAreEquivalent;
}
private function DBWriteLinks()
{
foreach (MetaModel::ListAttributeDefs(get_class($this)) as $sAttCode => $oAttDef) {
if (!$oAttDef->IsLinkSet()) {
continue;
}
if (!array_key_exists($sAttCode, $this->m_aTouchedAtt)) {
continue;
}
if (array_key_exists($sAttCode, $this->m_aModifiedAtt) && $this->m_aModifiedAtt[$sAttCode] == false) {
continue;
}
// Note: any change to this algorithm must be reproduced into the implementation of AttributeLinkSet::Equals()
$sExtKeyToMe = $oAttDef->GetExtKeyToMe();
$sAdditionalKey = null;
if ($oAttDef->IsIndirect() && !$oAttDef->DuplicatesAllowed()) {
$sAdditionalKey = $oAttDef->GetExtKeyToRemote();
}
$oComparator = new DBObjectSetComparator($this->m_aOrigValues[$sAttCode], $this->Get($sAttCode), array($sExtKeyToMe), $sAdditionalKey);
$aChanges = $oComparator->GetDifferences();
foreach ($aChanges['added'] as $oLink) {
// Make sure that the objects in the set point to "this"
$oLink->Set($oAttDef->GetExtKeyToMe(), $this->m_iKey);
$id = $oLink->DBWrite();
}
foreach ($aChanges['modified'] as $oLink) {
// Objects in the set either remain attached or have been detached -> leave the link as is
$oLink->DBWrite();
}
foreach ($aChanges['removed'] as $oLink) {
$oLink->DBDelete();
}
}
}
/**
* Compare two sets of objects to determine if their content is identical or not.
*
* Limitation:
* Works only for sets of 1 column (i.e. one class of object selected)
*
* @param DBObjectSet $oObjectSet
* @param array $aExcludeColumns The list of columns to exclude frop the comparison
* @return boolean True if the sets are identical, false otherwise
*/
public function HasSameContents(DBObjectSet $oObjectSet, $aExcludeColumns = array())
{
$oComparator = new DBObjectSetComparator($this, $oObjectSet, $aExcludeColumns);
return $oComparator->SetsAreEquivalent();
}
private function DBWriteLinks()
{
foreach (MetaModel::ListAttributeDefs(get_class($this)) as $sAttCode => $oAttDef) {
if (!$oAttDef->IsLinkSet()) {
continue;
}
if (!array_key_exists($sAttCode, $this->m_aTouchedAtt)) {
continue;
}
if (array_key_exists($sAttCode, $this->m_aModifiedAtt) && $this->m_aModifiedAtt[$sAttCode] == false) {
continue;
}
$sExtKeyToMe = $oAttDef->GetExtKeyToMe();
$sAdditionalKey = null;
if ($oAttDef->IsIndirect()) {
$sAdditionalKey = $oAttDef->GetExtKeyToRemote();
}
$oComparator = new DBObjectSetComparator($this->m_aOrigValues[$sAttCode], $this->Get($sAttCode), array($sExtKeyToMe), $sAdditionalKey);
$aChanges = $oComparator->GetDifferences();
foreach ($aChanges['added'] as $oLink) {
// Make sure that the objects in the set point to "this"
$oLink->Set($oAttDef->GetExtKeyToMe(), $this->m_iKey);
$id = $oLink->DBWrite();
}
foreach ($aChanges['modified'] as $oLink) {
// Make sure that the objects in the set point to "this"
$oLink->Set($oAttDef->GetExtKeyToMe(), $this->m_iKey);
$oLink->DBWrite();
}
foreach ($aChanges['removed'] as $oLink) {
// Objects can be removed from the set because:
// 1) They should no longer exist
// 2) They are about to be removed from the set BUT NOT deleted, their ExtKey has been reset
if ($oLink->IsModified() && $oLink->Get($sExtKeyToMe) != $this->m_iKey) {
$oLink->DBWrite();
} else {
$oLink->DBDelete();
}
}
}
}
