/**
* @todo should *all* sequences be dropped in stage3, rather than just the shim?
* the only reason we don't is because pgsql8 drops in stage 1...
*/
public static function diff_sequences($ofs1, $ofs3, $old_schema, $new_schema)
{
$new_sequences = static::get_sequences($new_schema);
if ($old_schema != null) {
$old_sequences = static::get_sequences($old_schema);
} else {
$old_sequences = array();
}
if (empty($new_sequences)) {
// there are no sequences in the new schema, so if there used to be sequences,
// we can just drop the whole shim table
if (!empty($old_sequences)) {
$ofs3->write(mysql5_sequence::get_shim_drop_sql());
}
} else {
// there *are* sequences in the new schema, so if there didn't used to be,
// we need to add the shim in before adding any sequences
if (empty($old_sequences)) {
$ofs1->write(mysql5_sequence::get_shim_creation_sql() . "\n\n");
$ofs1->write(mysql5_sequence::get_creation_sql($new_schema, $new_sequences) . "\n");
} else {
// there were schemas in the old schema
$common_sequences = array();
// only drop sequences not in the new schema
$to_drop = array();
foreach ($old_sequences as $old_seq) {
if (static::schema_contains_sequence($new_schema, $old_seq['name'], true)) {
// if the sequence *is* in the new schema, then it might have changed
$common_sequences[(string) $old_seq['name']] = $old_seq;
} else {
$to_drop[] = $old_seq;
}
}
if (!empty($to_drop)) {
$ofs1->write(mysql5_sequence::get_drop_sql($old_schema, $to_drop) . "\n\n");
}
// only add sequences not in the old schema
$to_insert = array();
foreach ($new_sequences as $new_seq) {
if (static::schema_contains_sequence($old_schema, $new_seq['name'])) {
// there used to be a sequence named $new_seq['name']
self::diff_single($ofs1, $common_sequences[(string) $new_seq['name']], $new_seq);
} elseif (!dbsteward::$ignore_oldnames && !empty($new_seq['oldSequenceName']) && static::schema_contains_sequence($old_schema, $new_seq['oldSequenceName'])) {
// there used to be a sequence named $new_seq['oldSequenceName']
self::diff_single($ofs1, $common_sequences[(string) $new_seq['oldSequenceName']], $new_seq);
} else {
$to_insert[] = $new_seq;
}
}
if (!empty($to_insert)) {
$ofs1->write(mysql5_sequence::get_creation_sql($new_schema, $to_insert) . "\n");
}
}
}
}
private function createOne($name, $min, $max, $cycle = TRUE, $inc = 1, $start = FALSE)
{
$cyc_n = $cycle ? '1' : '0';
$cycle = $cycle ? 'true' : 'false';
$start = $start === FALSE ? $min : $start;
$xml = <<<XML
<schema name="test" owner="NOBODY">
<sequence name="{$name}" owner="NOBODY" min="{$min}" max="{$max}" cycle="{$cycle}" inc="{$inc}" start="{$start}"/>
</schema>
XML;
$schema = new SimpleXMLElement($xml);
$this->assertEquals(1, $this->pdo->exec(mysql5_sequence::get_creation_sql($schema, $schema->sequence)));
$stmt = $this->pdo->prepare("SELECT * FROM __sequences WHERE name = ?");
$this->assertTrue($stmt->execute(array($name)));
$this->assertEquals(array('name' => $name, 'increment' => "{$inc}", 'min_value' => "{$min}", 'max_value' => "{$max}", 'cur_value' => "{$start}", 'start_value' => "{$start}", 'cycle' => $cyc_n, 'should_advance' => true), $stmt->fetch(PDO::FETCH_ASSOC));
}
public static function build_schema($db_doc, $ofs, $table_depends)
{
// schema creation
if (static::$use_schema_name_prefix) {
dbsteward::info("MySQL schema name prefixing mode turned on");
} else {
if (count($db_doc->schema) > 1) {
throw new Exception("You cannot use more than one schema in mysql5 without schema name prefixing\nPass the --useschemaprefix flag to turn this on");
}
}
foreach ($db_doc->schema as $schema) {
// database grants
foreach ($schema->grant as $grant) {
$ofs->write(mysql5_permission::get_permission_sql($db_doc, $schema, $schema, $grant) . "\n");
}
// enums
foreach ($schema->type as $type) {
$ofs->write(mysql5_type::get_creation_sql($schema, $type) . "\n");
}
// function definitions
foreach ($schema->function as $function) {
if (mysql5_function::has_definition($function)) {
$ofs->write(mysql5_function::get_creation_sql($schema, $function) . "\n\n");
}
// function grants
foreach ($function->grant as $grant) {
$ofs->write(mysql5_permission::get_permission_sql($db_doc, $schema, $function, $grant) . "\n");
}
}
$sequences = array();
$triggers = array();
// create defined tables
foreach ($schema->table as $table) {
// get sequences and triggers needed to make this table work
$sequences = array_merge($sequences, mysql5_table::get_sequences_needed($schema, $table));
$triggers = array_merge($triggers, mysql5_table::get_triggers_needed($schema, $table));
// table definition
$ofs->write(mysql5_table::get_creation_sql($schema, $table) . "\n\n");
// table indexes
// mysql5_diff_indexes::diff_indexes_table($ofs, NULL, NULL, $schema, $table);
// table grants
if (isset($table->grant)) {
foreach ($table->grant as $grant) {
$ofs->write(mysql5_permission::get_permission_sql($db_doc, $schema, $table, $grant) . "\n");
}
}
$ofs->write("\n");
}
// sequences contained in the schema + sequences used by serials
$sequences = array_merge($sequences, dbx::to_array($schema->sequence));
if (count($sequences) > 0) {
$ofs->write(mysql5_sequence::get_shim_creation_sql() . "\n\n");
$ofs->write(mysql5_sequence::get_creation_sql($schema, $sequences) . "\n\n");
// sequence grants
foreach ($sequences as $sequence) {
foreach ($sequence->grant as $grant) {
$ofs->write("-- grant for the {$sequence['name']} sequence applies to ALL sequences\n");
$ofs->write(mysql5_permission::get_permission_sql($db_doc, $schema, $sequence, $grant) . "\n");
}
}
}
// trigger definitions + triggers used by serials
$triggers = array_merge($triggers, dbx::to_array($schema->trigger));
$unique_triggers = array();
foreach ($triggers as $trigger) {
// only do triggers set to the current sql format
if (strcasecmp($trigger['sqlFormat'], dbsteward::get_sql_format()) == 0) {
// check that this table/timing/event combo hasn't been defined, because MySQL only
// allows one trigger per table per BEFORE/AFTER per action
$unique_name = "{$trigger['table']}-{$trigger['when']}-{$trigger['event']}";
if (array_key_exists($unique_name, $unique_triggers)) {
throw new Exception("MySQL will not allow trigger {$trigger['name']} to be created because it happens on the same table/timing/event as trigger {$unique_triggers[$unique_name]}");
}
$unique_triggers[$unique_name] = $trigger['name'];
$ofs->write(mysql5_trigger::get_creation_sql($schema, $trigger) . "\n");
}
}
}
foreach ($db_doc->schema as $schema) {
// define table primary keys before foreign keys so unique requirements are always met for FOREIGN KEY constraints
foreach ($schema->table as $table) {
mysql5_diff_constraints::diff_constraints_table($ofs, NULL, NULL, $schema, $table, 'primaryKey', FALSE);
}
$ofs->write("\n");
}
// foreign key references
// use the dependency order to specify foreign keys in an order that will satisfy nested foreign keys and etc
for ($i = 0; $i < count($table_depends); $i++) {
$dep_schema = $table_depends[$i]['schema'];
$table = $table_depends[$i]['table'];
if ($table['name'] === dbsteward::TABLE_DEPENDENCY_IGNORABLE_NAME) {
// don't do anything with this table, it is a magic internal DBSteward value
continue;
}
mysql5_diff_constraints::diff_constraints_table($ofs, NULL, NULL, $dep_schema, $table, 'constraint', FALSE);
}
$ofs->write("\n");
mysql5_diff_views::create_views_ordered($ofs, null, $db_doc);
// view permission grants
foreach ($db_doc->schema as $schema) {
foreach ($schema->view as $view) {
if (isset($view->grant)) {
foreach ($view->grant as $grant) {
$ofs->write(mysql5_permission::get_permission_sql($db_doc, $schema, $view, $grant) . "\n");
}
}
}
}
// @TODO: database configurationParameter support
}
public function testMultipleSequences()
{
$xml = <<<XML
<schema name="test" owner="NOBODY">
<sequence name="seq0" max="10" cycle="true" inc="3" start="2"/>
<sequence name="seq1" max="10" cycle="true" inc="3" start="2"/>
<sequence name="seq2" max="10" cycle="true" inc="3" start="2"/>
</schema>
XML;
$schema = new SimpleXMLElement($xml);
$expected = <<<SQL
INSERT INTO `__sequences`
(`name`, `increment`, `min_value`, `max_value`, `cur_value`, `start_value`, `cycle`)
VALUES
('seq0', 3, DEFAULT, 10, 2, 2, TRUE),
('seq1', 3, DEFAULT, 10, 2, 2, TRUE),
('seq2', 3, DEFAULT, 10, 2, 2, TRUE);
SQL;
$actual = trim(preg_replace('/--.*/', '', mysql5_sequence::get_creation_sql($schema, $schema->sequence)));
$this->assertEquals($expected, $actual);
$expected_drop = "DELETE FROM `__sequences` WHERE `name` IN ('seq0', 'seq1', 'seq2');";
$actual_drop = trim(preg_replace('/--.*/', '', mysql5_sequence::get_drop_sql($schema, $schema->sequence)));
$this->assertEquals($expected_drop, $actual_drop);
}
