abstract class Schema

Provides a base implementation for Database Schema.

Hierarchy

• class \Drupal\Core\Database\Schema implements PlaceholderInterface

File

core/lib/Drupal/Core/Database/Schema.php, line 11

Namespace

Drupal\Core\Database

Members

Name	Modifiers	Type	Description
Schema::$connection	protected	property	The database connection.
Schema::$defaultSchema	protected	property	Definition of prefixInfo array structure.
Schema::$placeholder	protected	property	The placeholder counter.
Schema::$uniqueIdentifier	protected	property	A unique identifier for this query object.
Schema::addField	abstract public	function	Add a new field to a table.
Schema::addIndex	abstract public	function	Add an index.
Schema::addPrimaryKey	abstract public	function	Add a primary key.
Schema::addUniqueKey	abstract public	function	Add a unique key.
Schema::buildTableNameCondition	protected	function	Build a condition to match a table name against a standard information_schema.
Schema::changeField	abstract public	function	Change a field definition.
Schema::createTable	public	function	Create a new table from a Drupal table definition.
Schema::dropField	abstract public	function	Drop a field.
Schema::dropIndex	abstract public	function	Drop an index.
Schema::dropPrimaryKey	abstract public	function	Drop the primary key.
Schema::dropTable	abstract public	function	Drop a table.
Schema::dropUniqueKey	abstract public	function	Drop a unique key.
Schema::escapeDefaultValue	protected	function	Return an escaped version of its parameter to be used as a default value on a column.
Schema::fieldExists	public	function	Check if a column exists in the given table.
Schema::fieldNames	public	function	Return an array of field names from an array of key/index column specifiers.
Schema::fieldSetDefault	abstract public	function	Set the default value for a field.
Schema::fieldSetNoDefault	abstract public	function	Set a field to have no default value.
Schema::findTables	public	function	Finds all tables that are like the specified base table name.
Schema::getFieldTypeMap	abstract public	function	Returns a mapping of Drupal schema field names to DB-native field types.
Schema::getPrefixInfo	protected	function	Get information about the table name and schema from the prefix.
Schema::indexExists	abstract public	function	Checks if an index exists in the given table.
Schema::nextPlaceholder	public	function	Returns the next placeholder ID for the query. Overrides PlaceholderInterface::nextPlaceholder
Schema::prefixNonTable		function	Create names for indexes, primary keys and constraints.
Schema::prepareComment	public	function	Prepare a table or column comment for database query.
Schema::renameTable	abstract public	function	Rename a table.
Schema::tableExists	public	function	Check if a table exists.
Schema::uniqueIdentifier	public	function	Returns a unique identifier for this object. Overrides PlaceholderInterface::uniqueIdentifier
Schema::__clone	public	function	Implements the magic __clone function.
Schema::__construct	public	function