function test_isMetadataTable()
{
$mt = new Dataface_MetadataTool(null);
$this->assertTrue($mt->isMetadataTable('foo__metadata'));
$this->assertTrue(!$mt->isMetadataTable('foo__metadata2'));
$this->assertTrue($mt->isMetadataTable('bar_metadata__metadata'));
}
/**
* Refreshes the metadata table for a given table. This means that missing
* columns and keys are created so that the schema matches the schema of
* the current table structure.
*
* @param string $tablename The name of the table for which the metadata is being
* stored.
*/
function refreshMetadataTable($tablename = null)
{
if (!isset($tablename)) {
$tablename = $this->tablename;
}
if (Dataface_MetadataTool::isMetadataTable($tablename)) {
return false;
}
$app =& Dataface_Application::getInstance();
$table =& Dataface_Table::loadTable($tablename);
$md_tablename = $tablename . '__metadata';
if (!Dataface_Table::tableExists($md_tablename, false)) {
if ($this->createMetadataTable($tablename)) {
return true;
}
}
$cols =& $this->getColumns($tablename, false);
// First we have to go through all of the key fields of the subject table
// and make sure that they appear in the metadata table.
$updatePrimaryKey = false;
foreach ($table->keys() as $field) {
if (!isset($cols[$field['Field']])) {
$updatePrimaryKey = true;
$default = @$field['Default'] ? " DEFAULT {$field['Default']}" : '';
$sql = "alter table `{$md_tablename}` add column `{$field['Field']}` {$field['Type']}{$default}";
$res = xf_db_query($sql, $app->db());
if (!$res) {
trigger_error(xf_db_error($app->db()), E_USER_ERROR);
}
}
}
$table_keys =& $table->keys();
//Next we have to go through all of the key fields in the metadata table ane make sure that they
// appear in the subject table primary keys.
foreach ($this->getKeyColumns($tablename, false) as $field) {
if (!isset($table_keys[$field['Field']])) {
$updatePrimaryKey = true;
$sql = "alter table `{$md_tablename}` drop column `{$field['Field']}`";
$res = xf_db_query($sql, $app->db());
if (!$res) {
trigger_error(xf_db_error($app->db()), E_USER_ERROR);
}
}
}
// If the primary key needed to be updated, we will update it now.
if ($updatePrimaryKey) {
// The primary key needs to be updated
$sql = "drop primary key";
@xf_db_query($sql, $app->db());
$sql = "alter table `{$md_tablename}` add primary key (`" . implode('`,`', array_keys($table->keys())) . "`)";
$res = xf_db_query($sql, $app->db());
if (!$res) {
trigger_error(xf_db_error($app->db()), E_USER_ERROR);
}
}
// Now we need to make sure that all of the prescribed meta fields are
// in the metadata field.
$fielddefs = $this->loadMetadataFieldDefs($tablename);
$cols = $this->getColumns($tablename, false);
foreach ($fielddefs as $field) {
if (!isset($cols[$field['Field']])) {
$default = @$field['Default'] ? " DEFAULT {$field['Default']}" : '';
$sql = "alter table `{$md_tablename}` add column `{$field['Field']}` {$field['Type']}{$default}";
$res = xf_db_query($sql, $app->db());
if (!$res) {
trigger_error(xf_db_error($app->db()), E_USER_ERROR);
}
}
}
return true;
}