function toDialectString(IDialect $dialect)
{
$table = $dialect->quoteIdentifier($this->constraint->getTable()->getName());
$ct = $dialect->quoteIdentifier($this->constraint->getName());
if ($dialect->getDBDriver()->is(DBDriver::MYSQL)) {
if ($this->constraint instanceof DBUniqueConstraint) {
return 'ALTER TABLE ' . $table . ' DROP INDEX ' . $ct;
} else {
if ($this->constraint instanceof DBPrimaryKeyConstraint) {
return 'ALTER TABLE ' . $table . ' DROP PRIMARY KEY';
} else {
if ($this->constraint instanceof DBOneToOneConstraint || $this->constraint instanceof DBForeignKeyConstraint) {
return 'ALTER TABLE ' . $table . ' DROP FOREIGN KEY ' . $ct;
}
}
}
Assert::isUnreachable('Do not know how to remove constraint %s from MySQL', get_class($this->constraint));
}
return 'ALTER TABLE ' . $table . ' DROP CONSTRAINT ' . $ct . ' CASCADE;';
}
function toDialectString(IDialect $dialect)
{
return 'ALTER TABLE ' . $dialect->quoteIdentifier($this->constraint->getTable()->getName()) . ' ADD ' . $this->constraint->toDialectString($dialect) . ';';
}
