Add a primary key.

Parameters

$table: The table to be altered.

$fields: Fields for the primary key.

Overrides DatabaseSchema::addPrimaryKey

File

includes/database/sqlite/schema.inc, line 618

Class

DatabaseSchema_sqlite

Code

public function addPrimaryKey($table, $fields) {
 if (!$this->tableExists ($table)) {
 throw new DatabaseSchemaObjectDoesNotExistException (t ("Cannot add primary key to table @table: table doesn't exist.", array(
 '@table' => $table,
 )));
 }
 $old_schema = $this->introspectSchema ($table);
 $new_schema = $old_schema;
 if (!empty($new_schema['primary key'])) {
 throw new DatabaseSchemaObjectExistsException (t ("Cannot add primary key to table @table: primary key already exists.", array(
 '@table' => $table,
 )));
 }
 $new_schema['primary key'] = $fields;
 $this->alterTable ($table, $old_schema, $new_schema);
}

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