Create an SQL string for a field to be used in table creation or alteration.

Before passing a field out of a schema definition into this function it has to be processed by db_processField().

Parameters

$name: Name of the field.

$spec: The field specification, as per the schema data structure format.

File

drupal-7.x/includes/database/sqlite/schema.inc, line 147

Database schema code for SQLite databases.

Class

DatabaseSchema_sqlite

Code

protected function createFieldSql($name, $spec) {
  if (!empty($spec['auto_increment'])) {
    $sql = $name . " INTEGER PRIMARY KEY AUTOINCREMENT";
    if (!empty($spec['unsigned'])) {
      $sql .= ' CHECK (' . $name . '>= 0)';
    }
  }
  else {
    $sql = $name . ' ' . $spec['sqlite_type'];

    if (in_array($spec['sqlite_type'], array('VARCHAR', 'TEXT')) && isset($spec['length'])) {
      $sql .= '(' . $spec['length'] . ')';
    }

    if (isset($spec['not null'])) {
      if ($spec['not null']) {
        $sql .= ' NOT NULL';
      }
      else {
        $sql .= ' NULL';
      }
    }

    if (!empty($spec['unsigned'])) {
      $sql .= ' CHECK (' . $name . '>= 0)';
    }

    if (isset($spec['default'])) {
      if (is_string($spec['default'])) {
        $spec['default'] = "'" . $spec['default'] . "'";
      }
      $sql .= ' DEFAULT ' . $spec['default'];
    }

    if (empty($spec['not null']) && !isset($spec['default'])) {
      $sql .= ' DEFAULT NULL';
    }
  }
  return $sql;
}