public static function diff_constraints_table($ofs, $old_schema, $old_table, $new_schema, $new_table, $type, $drop_constraints = false)
{
pgsql8::set_context_replica_set_id($new_table);
if ($drop_constraints) {
// drop constraints that no longer exist or are modified
foreach (self::get_drop_constraints($old_schema, $old_table, $new_schema, $new_table, $type) as $constraint) {
$ofs->write(pgsql8_table::get_constraint_drop_sql($constraint) . "\n");
}
} else {
if (!dbsteward::$ignore_oldnames) {
// if it is a renamed table
if (pgsql8_diff_tables::is_renamed_table($new_schema, $new_table)) {
// remove all constraints and recreate with new table name conventions
foreach (pgsql8_constraint::get_table_constraints(dbsteward::$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['schema_name'] = $new_schema['name'];
$constraint['table_name'] = $new_table['name'];
$ofs->write(pgsql8_table::get_constraint_drop_sql($constraint) . "\n");
}
// add all still-define constraints back and any new ones to the table
foreach (pgsql8_constraint::get_table_constraints(dbsteward::$new_database, $new_schema, $new_table, $type) as $constraint) {
$ofs->write(pgsql8_table::get_constraint_sql($constraint) . "\n");
}
// this gets any new constraints as well.
// return so that get_new_costraint() doesnt duplicate any new constraints
return;
}
}
// add new constraints
foreach (self::get_new_constraints($old_schema, $old_table, $new_schema, $new_table, $type) as $constraint) {
$ofs->write(pgsql8_table::get_constraint_sql($constraint) . "\n");
}
}
}
