public static function diff_constraints_table($ofs, $old_schema, $old_table, $new_schema, $new_table, $type, $drop_constraints = FALSE)
{
if ($drop_constraints) {
// drop constraints that no longer exist or are modified
foreach (mssql10_diff_tables::get_drop_constraints($old_schema, $old_table, $new_schema, $new_table, $type) as $constraint) {
$ofs->write(mssql10_table::get_constraint_drop_sql($constraint) . "\n");
}
} else {
// if it is a renamed table, remove all constraints and recreate with new table name conventions
if (mssql10_diff_tables::is_renamed_table($new_schema, $new_table)) {
foreach (mssql10_constraint::get_table_constraints(dbsteward::$old_database, $old_schema, $old_table, $type) as $constraint) {
// rewrite the constraint definer to refer to the new table name
// so the constraint by the old name, but part of the new table
// will be referenced properly in the drop statement
$constraint['table_name'] = $new_table['name'];
$ofs->write(mssql10_table::get_constraint_drop_sql($constraint) . "\n");
}
// add all defined constraints back to the new table
foreach (mssql10_constraint::get_table_constraints(dbsteward::$new_database, $new_schema, $new_table, $type) as $constraint) {
$ofs->write(mssql10_table::get_constraint_sql($constraint) . "\n");
}
return;
}
// END if it is a renamed table, remove all constraints and recreate with new table name conventions
// add new constraints
foreach (mssql10_diff_tables::get_new_constraints($old_schema, $old_table, $new_schema, $new_table, $type) as $constraint) {
$ofs->write(mssql10_table::get_constraint_sql($constraint) . "\n");
}
}
}
