/**
* Returns the number of differences.
*
* Compare the foreign keys of the fromTable and the toTable,
* and modifies the inner tableDiff if necessary.
*
* @param boolean $caseInsensitive
* @return integer
*/
public function compareForeignKeys($caseInsensitive = false)
{
$fkDifferences = 0;
$fromTableFks = $this->getFromTable()->getForeignKeys();
$toTableFks = $this->getToTable()->getForeignKeys();
foreach ($fromTableFks as $fromTableFkPos => $fromTableFk) {
foreach ($toTableFks as $toTableFkPos => $toTableFk) {
$sameName = $caseInsensitive ? strtolower($fromTableFk->getName()) == strtolower($toTableFk->getName()) : $fromTableFk->getName() == $toTableFk->getName();
if ($sameName && !$toTableFk->isPolymorphic()) {
if (false === ForeignKeyComparator::computeDiff($fromTableFk, $toTableFk, $caseInsensitive)) {
unset($fromTableFks[$fromTableFkPos]);
unset($toTableFks[$toTableFkPos]);
} else {
// same name, but different columns
$this->tableDiff->addModifiedFk($fromTableFk->getName(), $fromTableFk, $toTableFk);
unset($fromTableFks[$fromTableFkPos]);
unset($toTableFks[$toTableFkPos]);
$fkDifferences++;
}
}
}
}
foreach ($fromTableFks as $fromTableFk) {
if (!$fromTableFk->isSkipSql() && !$fromTableFk->isPolymorphic() && !in_array($fromTableFk, $toTableFks)) {
$this->tableDiff->addRemovedFk($fromTableFk->getName(), $fromTableFk);
$fkDifferences++;
}
}
foreach ($toTableFks as $toTableFk) {
if (!$toTableFk->isSkipSql() && !$toTableFk->isPolymorphic() && !in_array($toTableFk, $fromTableFks)) {
$this->tableDiff->addAddedFk($toTableFk->getName(), $toTableFk);
$fkDifferences++;
}
}
return $fkDifferences;
}
public function testCompareSort()
{
$c1 = new Column('Foo');
$c2 = new Column('Bar');
$c3 = new Column('Baz');
$c4 = new Column('Faz');
$fk1 = new ForeignKey();
$fk1->addReference($c1, $c3);
$fk1->addReference($c2, $c4);
$t1 = new Table('Baz');
$t1->addForeignKey($fk1);
$fk2 = new ForeignKey();
$fk2->addReference($c2, $c4);
$fk2->addReference($c1, $c3);
$t2 = new Table('Baz');
$t2->addForeignKey($fk2);
$this->assertFalse(ForeignKeyComparator::computeDiff($fk1, $fk2));
}