/**
* Compute the difference between two Foreign key objects
*
* @param ForeignKey $fromFk
* @param ForeignKey $toFk
*
* @param boolean $caseInsensitive Whether the comparison is case insensitive.
* False by default.
*
* @return boolean false if the two fks are similar, true if they have differences
*/
public static function computeDiff(ForeignKey $fromFk, ForeignKey $toFk, $caseInsensitive = false)
{
// Check for differences in local and remote table
$test = $caseInsensitive ? strtolower($fromFk->getTableName()) != strtolower($toFk->getTableName()) : $fromFk->getTableName() != $toFk->getTableName();
if ($test) {
return true;
}
$test = $caseInsensitive ? strtolower($fromFk->getForeignTableName()) != strtolower($toFk->getForeignTableName()) : $fromFk->getForeignTableName() != $toFk->getForeignTableName();
if ($test) {
return true;
}
// compare columns
if (array_map('strtolower', $fromFk->getLocalColumns()) != array_map('strtolower', $toFk->getLocalColumns())) {
return true;
}
if (array_map('strtolower', $fromFk->getForeignColumns()) != array_map('strtolower', $toFk->getForeignColumns())) {
return true;
}
// compare on
if ($fromFk->normalizeFKey($fromFk->getOnUpdate()) != $toFk->normalizeFKey($toFk->getOnUpdate())) {
return true;
}
if ($fromFk->normalizeFKey($fromFk->getOnDelete()) != $toFk->normalizeFKey($toFk->getOnDelete())) {
return true;
}
// compare skipSql
if ($fromFk->isSkipSql() != $toFk->isSkipSql()) {
return true;
}
return false;
}
/**
* Compute the difference between two Foreign key objects
*
* @param ForeignKey $fromFk
* @param ForeignKey $toFk
*
* @param boolean $caseInsensitive Whether the comparison is case insensitive.
* False by default.
*
* @return boolean false if the two fks are similar, true if they have differences
*/
public static function computeDiff(ForeignKey $fromFk, ForeignKey $toFk, $caseInsensitive = false)
{
// Check for differences in local and remote table
$test = $caseInsensitive ? strtolower($fromFk->getTableName()) != strtolower($toFk->getTableName()) : $fromFk->getTableName() != $toFk->getTableName();
if ($test) {
return true;
}
$test = $caseInsensitive ? strtolower($fromFk->getForeignTableName()) != strtolower($toFk->getForeignTableName()) : $fromFk->getForeignTableName() != $toFk->getForeignTableName();
if ($test) {
return true;
}
// compare columns
$fromFkLocalColumns = $fromFk->getLocalColumns();
sort($fromFkLocalColumns);
$toFkLocalColumns = $toFk->getLocalColumns();
sort($toFkLocalColumns);
if (array_map('strtolower', $fromFkLocalColumns) != array_map('strtolower', $toFkLocalColumns)) {
return true;
}
$fromFkForeignColumns = $fromFk->getForeignColumns();
sort($fromFkForeignColumns);
$toFkForeignColumns = $toFk->getForeignColumns();
sort($toFkForeignColumns);
if (array_map('strtolower', $fromFkForeignColumns) != array_map('strtolower', $toFkForeignColumns)) {
return true;
}
/*
* Compare onDelete and onUpdate:
*
* "RESTRICT" and its synonym "NO ACTION" is default and is not being reported explicitly.
*/
$equalBehavior = array('', 'RESTRICT', 'NO ACTION');
$fromOnUpdate = strtoupper($fromFk->normalizeFKey($fromFk->getOnUpdate()));
$toOnUpdate = strtoupper($toFk->normalizeFKey($toFk->getOnUpdate()));
if (in_array($fromOnUpdate, $equalBehavior) && !in_array($toOnUpdate, $equalBehavior) || !in_array($fromOnUpdate, $equalBehavior) && in_array($toOnUpdate, $equalBehavior)) {
return true;
}
$fromOnDelete = strtoupper($fromFk->normalizeFKey($fromFk->getOnDelete()));
$toOnDelete = strtoupper($toFk->normalizeFKey($toFk->getOnDelete()));
if (in_array($fromOnDelete, $equalBehavior) && !in_array($toOnDelete, $equalBehavior) || !in_array($fromOnDelete, $equalBehavior) && in_array($toOnDelete, $equalBehavior)) {
return true;
}
// compare skipSql
if ($fromFk->isSkipSql() != $toFk->isSkipSql()) {
return true;
}
return false;
}
public function getForeignKeyDDL(ForeignKey $fk)
{
if ($fk->isSkipSql()) {
return;
}
$pattern = 'CONSTRAINT %s FOREIGN KEY (%s) REFERENCES %s (%s)';
$script = sprintf($pattern, $this->quoteIdentifier($fk->getName()), $this->getColumnListDDL($fk->getLocalColumns()), $this->quoteIdentifier($fk->getForeignTableName()), $this->getColumnListDDL($fk->getForeignColumns()));
if ($fk->hasOnUpdate() && $fk->getOnUpdate() != ForeignKey::SETNULL) {
$script .= ' ON UPDATE ' . $fk->getOnUpdate();
}
if ($fk->hasOnDelete() && $fk->getOnDelete() != ForeignKey::SETNULL) {
$script .= ' ON DELETE ' . $fk->getOnDelete();
}
return $script;
}