database.inc

drupal
1. drupal7

Version 1.53 (checked in on 2009/05/03 at 08:55:06 by dries)

Base classes for the database layer.

Klassen

Name	Beschreibung
Database	Primary front-controller for the database system.
DatabaseConnection	Base Database API class.
DatabaseStatementBase	Default implementation of DatabaseStatementInterface.
DatabaseTransaction	A wrapper class for creating and managing database transactions.
ExplicitTransactionsNotSupportedException	Exception to deny attempts to explicitly manage transactions.
InvalidMergeQueryException	Exception thrown for merge queries that do not make semantic sense.
NoActiveTransactionException	Exception to throw when popTransaction() is called when no transaction is active.
TransactionsNotSupportedException	Exception to mark databases that do not support transations.

Interfaces

Name	Beschreibung
DatabaseStatementInterface	A prepared statement.

Funktionen & Methoden

Name	Beschreibung
db_add_field	Add a new field to a table.
db_add_index	Add an index.
db_add_primary_key	Add a primary key.
db_add_unique_key	Add a unique key.
db_affected_rows	Determine the number of rows changed by the preceding query.
db_change_field
db_column_exists	Check if a column exists in the given table.
db_create_table	Create a new table from a Drupal table definition.
db_delete	Returns a new DeleteQuery object for the active database.
db_distinct_field	Wraps the given table.field entry with a DISTINCT(). The wrapper is added to the SELECT list entry of the given query and the resulting query is returned. This function only applies the wrapper if a DISTINCT doesn't already exist in the query.
db_driver	Retrieve the name of the currently active database driver, such as "mysql" or "pgsql".
db_drop_field	Drop a field.
db_drop_index	Drop an index.
db_drop_primary_key	Drop the primary key.
db_drop_table	Drop a table.
db_drop_unique_key	Drop a unique key.
db_escape_table	Restrict a dynamic table, column or constraint name to safe characters.
db_fetch_array
db_fetch_object
db_field_names	Return an array of field names from an array of key/index column specifiers.
db_field_set_default	Set the default value for a field.
db_field_set_no_default	Set a field to have no default value.
db_find_tables	Find all tables that are like the specified base table name.
db_insert	Returns a new InsertQuery object for the active database.
db_is_active	Determine if there is an active connection.
db_last_insert_id	Returns the last insert id.
db_merge	Returns a new MergeQuery object for the active database.
db_placeholders	Generate placeholders for an array of query arguments of a single type.
db_query	Execute an arbitrary query string against the active database.
db_query_range	Execute an arbitrary query string against the active database, restricted to a specified range.
db_query_temporary	Execute a query string against the active database and save the result set to a temp table.
db_rename_table	Rename a table.
db_result
db_rewrite_sql	Rewrites node, taxonomy and comment queries. Use it for listing queries. Do not use FROM table1, table2 syntax, use JOIN instead.
db_select	Returns a new SelectQuery object for the active database.
db_set_active	Sets a new active database.
db_table_exists	Check if a table exists.
db_transaction	Returns a new transaction object for the active database.
db_truncate	Returns a new TruncateQuery object for the active database.
db_type_map	This maps a generic data type in combination with its data size to the engine-specific data type.
db_type_placeholder	Given a Schema API field type, return the correct %-placeholder.
db_update	Returns a new UpdateQuery object for the active database.
update_sql	Perform an SQL query and return success or failure.
_db_check_install_needed	Redirect the user to the installation script if Drupal has not been installed yet (i.e., if no $databases array has been defined in the settings file) and we are not already there. Otherwise, do nothing.
_db_create_keys_sql
_db_error_page	Prints a themed maintenance page with the 'Site offline' text, adding the provided error message in the case of 'display_errors' set to on. Ends the page request; no return.
_db_query_process_args	Backward-compatibility utility.
_db_rewrite_sql	Helper function for db_rewrite_sql.

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Klassen

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Funktionen & Methoden

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