function DatabaseSchema_pgsql::createFieldSql

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_process_field().

Parameters

$name: Name of the field.

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

File

includes/database/pgsql/schema.inc, line 279

Class

DatabaseSchema_pgsql

Code

protected function createFieldSql($name, $spec) {
    $sql = $name . ' ' . $spec['pgsql_type'];
    if (isset($spec['type']) && $spec['type'] == 'serial') {
        unset($spec['not null']);
    }
    if (in_array($spec['pgsql_type'], array(
        'varchar',
        'character',
        'text',
    )) && isset($spec['length'])) {
        $sql .= '(' . $spec['length'] . ')';
    }
    elseif (isset($spec['precision']) && isset($spec['scale'])) {
        $sql .= '(' . $spec['precision'] . ', ' . $spec['scale'] . ')';
    }
    if (!empty($spec['unsigned'])) {
        $sql .= " CHECK ({$name} >= 0)";
    }
    if (isset($spec['not null'])) {
        if ($spec['not null']) {
            $sql .= ' NOT NULL';
        }
        else {
            $sql .= ' NULL';
        }
    }
    if (isset($spec['default'])) {
        $default = is_string($spec['default']) ? "'" . $spec['default'] . "'" : $spec['default'];
        $sql .= " default {$default}";
    }
    return $sql;
}