/common/libraries/plugin/pear/MDB2/Driver/Manager/oci8.php
PHP | 1457 lines | 829 code | 153 blank | 475 comment | 128 complexity | ab54313417e76bc6a06f90a874776190 MD5 | raw file
Possible License(s): BSD-3-Clause, LGPL-2.1, LGPL-3.0, GPL-3.0, MIT, GPL-2.0
- <?php
- // +----------------------------------------------------------------------+
- // | PHP versions 4 and 5 |
- // +----------------------------------------------------------------------+
- // | Copyright (c) 1998-2008 Manuel Lemos, Tomas V.V.Cox, |
- // | Stig. S. Bakken, Lukas Smith |
- // | All rights reserved. |
- // +----------------------------------------------------------------------+
- // | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB |
- // | API as well as database abstraction for PHP applications. |
- // | This LICENSE is in the BSD license style. |
- // | |
- // | Redistribution and use in source and binary forms, with or without |
- // | modification, are permitted provided that the following conditions |
- // | are met: |
- // | |
- // | Redistributions of source code must retain the above copyright |
- // | notice, this list of conditions and the following disclaimer. |
- // | |
- // | Redistributions in binary form must reproduce the above copyright |
- // | notice, this list of conditions and the following disclaimer in the |
- // | documentation and/or other materials provided with the distribution. |
- // | |
- // | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken, |
- // | Lukas Smith nor the names of his contributors may be used to endorse |
- // | or promote products derived from this software without specific prior|
- // | written permission. |
- // | |
- // | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
- // | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
- // | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
- // | FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
- // | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
- // | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
- // | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS|
- // | OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
- // | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
- // | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY|
- // | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
- // | POSSIBILITY OF SUCH DAMAGE. |
- // +----------------------------------------------------------------------+
- // | Author: Lukas Smith <smith@pooteeweet.org> |
- // +----------------------------------------------------------------------+
-
-
- // $Id: oci8.php 137 2009-11-09 13:24:37Z vanpouckesven $
-
-
- require_once 'MDB2/Driver/Manager/Common.php';
-
- /**
- * MDB2 oci8 driver for the management modules
- *
- * @package MDB2
- * @category Database
- * @author Lukas Smith <smith@pooteeweet.org>
- */
- class MDB2_Driver_Manager_oci8 extends MDB2_Driver_Manager_Common
- {
-
- // {{{ createDatabase()
-
-
- /**
- * create a new database
- *
- * @param string $name name of the database that should be created
- * @param array $options array with charset, collation info
- *
- * @return mixed MDB2_OK on success, a MDB2 error on failure
- * @access public
- */
- function createDatabase($name, $options = array())
- {
- $db = & $this->getDBInstance();
- if (PEAR :: isError($db))
- {
- return $db;
- }
-
- $username = $db->options['database_name_prefix'] . $name;
- $password = $db->dsn['password'] ? $db->dsn['password'] : $name;
- $tablespace = $db->options['default_tablespace'] ? ' DEFAULT TABLESPACE ' . $db->options['default_tablespace'] : '';
-
- $query = 'CREATE USER ' . $username . ' IDENTIFIED BY ' . $password . $tablespace;
- $result = $db->standaloneQuery($query, null, true);
- if (PEAR :: isError($result))
- {
- return $result;
- }
- $query = 'GRANT CREATE SESSION, CREATE TABLE, UNLIMITED TABLESPACE, CREATE SEQUENCE, CREATE TRIGGER TO ' . $username;
- $result = $db->standaloneQuery($query, null, true);
- if (PEAR :: isError($result))
- {
- $query = 'DROP USER ' . $username . ' CASCADE';
- $result2 = $db->standaloneQuery($query, null, true);
- if (PEAR :: isError($result2))
- {
- return $db->raiseError($result2, null, null, 'could not setup the database user', __FUNCTION__);
- }
- return $result;
- }
- return MDB2_OK;
- }
-
- // }}}
- // {{{ alterDatabase()
-
-
- /**
- * alter an existing database
- *
- * IMPORTANT: the safe way to change the db charset is to do a full import/export!
- * If - and only if - the new character set is a strict superset of the current
- * character set, it is possible to use the ALTER DATABASE CHARACTER SET to
- * expedite the change in the database character set.
- *
- * @param string $name name of the database that is intended to be changed
- * @param array $options array with name, charset info
- *
- * @return mixed MDB2_OK on success, a MDB2 error on failure
- * @access public
- */
- function alterDatabase($name, $options = array())
- {
- //disabled
- //return parent::alterDatabase($name, $options);
-
-
- $db = & $this->getDBInstance();
- if (PEAR :: isError($db))
- {
- return $db;
- }
-
- if (! empty($options['name']))
- {
- $query = 'ALTER DATABASE ' . $db->quoteIdentifier($name, true) . ' RENAME GLOBAL_NAME TO ' . $db->quoteIdentifier($options['name'], true);
- $result = $db->standaloneQuery($query);
- if (PEAR :: isError($result))
- {
- return $result;
- }
- }
-
- if (! empty($options['charset']))
- {
- $queries = array();
- $queries[] = 'SHUTDOWN IMMEDIATE'; //or NORMAL
- $queries[] = 'STARTUP MOUNT';
- $queries[] = 'ALTER SYSTEM ENABLE RESTRICTED SESSION';
- $queries[] = 'ALTER SYSTEM SET JOB_QUEUE_PROCESSES=0';
- $queries[] = 'ALTER DATABASE OPEN';
- $queries[] = 'ALTER DATABASE CHARACTER SET ' . $options['charset'];
- $queries[] = 'ALTER DATABASE NATIONAL CHARACTER SET ' . $options['charset'];
- $queries[] = 'SHUTDOWN IMMEDIATE'; //or NORMAL
- $queries[] = 'STARTUP';
-
- foreach ($queries as $query)
- {
- $result = $db->standaloneQuery($query);
- if (PEAR :: isError($result))
- {
- return $result;
- }
- }
- }
-
- return MDB2_OK;
- }
-
- // }}}
- // {{{ dropDatabase()
-
-
- /**
- * drop an existing database
- *
- * @param object $db database object that is extended by this class
- * @param string $name name of the database that should be dropped
- * @return mixed MDB2_OK on success, a MDB2 error on failure
- * @access public
- */
- function dropDatabase($name)
- {
- $db = & $this->getDBInstance();
- if (PEAR :: isError($db))
- {
- return $db;
- }
-
- $username = $db->options['database_name_prefix'] . $name;
- return $db->standaloneQuery('DROP USER ' . $username . ' CASCADE', null, true);
- }
-
- // }}}
- // {{{ _makeAutoincrement()
-
-
- /**
- * add an autoincrement sequence + trigger
- *
- * @param string $name name of the PK field
- * @param string $table name of the table
- * @param string $start start value for the sequence
- * @return mixed MDB2_OK on success, a MDB2 error on failure
- * @access private
- */
- function _makeAutoincrement($name, $table, $start = 1)
- {
- $db = & $this->getDBInstance();
- if (PEAR :: isError($db))
- {
- return $db;
- }
-
- $table_uppercase = strtoupper($table);
- $index_name = $table_uppercase . '_AI_PK';
- $definition = array('primary' => true, 'fields' => array($name => true));
- $idxname_format = $db->getOption('idxname_format');
- $db->setOption('idxname_format', '%s');
- $result = $this->createConstraint($table, $index_name, $definition);
- $db->setOption('idxname_format', $idxname_format);
- if (PEAR :: isError($result))
- {
- return $db->raiseError($result, null, null, 'primary key for autoincrement PK could not be created', __FUNCTION__);
- }
-
- $seq_name = $table . '_' . $name;
- if (is_null($start))
- {
- $db->beginTransaction();
- $query = 'SELECT MAX(' . $db->quoteIdentifier($name, true) . ') FROM ' . $db->quoteIdentifier($table, true);
- $start = $this->db->queryOne($query, 'integer');
- if (PEAR :: isError($start))
- {
- return $start;
- }
- ++ $start;
- $result = $this->createSequence($seq_name, $start);
- $db->commit();
- }
- else
- {
- $result = $this->createSequence($seq_name, $start);
- }
- if (PEAR :: isError($result))
- {
- return $db->raiseError($result, null, null, 'sequence for autoincrement PK could not be created', __FUNCTION__);
- }
- $seq_name = $db->getSequenceName($seq_name);
- $trigger_name = $db->quoteIdentifier($table_uppercase . '_AI_PK', true);
- $seq_name_quoted = $db->quoteIdentifier($seq_name, true);
- $table = $db->quoteIdentifier($table, true);
- $name = $db->quoteIdentifier($name, true);
- $trigger_sql = '
- CREATE TRIGGER ' . $trigger_name . '
- BEFORE INSERT
- ON ' . $table . '
- FOR EACH ROW
- DECLARE
- last_Sequence NUMBER;
- last_InsertID NUMBER;
- BEGIN
- SELECT ' . $seq_name_quoted . '.NEXTVAL INTO :NEW.' . $name . ' FROM DUAL;
- IF (:NEW.' . $name . ' IS NULL OR :NEW.' . $name . ' = 0) THEN
- SELECT ' . $seq_name_quoted . '.NEXTVAL INTO :NEW.' . $name . ' FROM DUAL;
- ELSE
- SELECT NVL(Last_Number, 0) INTO last_Sequence
- FROM User_Sequences
- WHERE UPPER(Sequence_Name) = UPPER(\'' . $seq_name . '\');
- SELECT :NEW.' . $name . ' INTO last_InsertID FROM DUAL;
- WHILE (last_InsertID > last_Sequence) LOOP
- SELECT ' . $seq_name_quoted . '.NEXTVAL INTO last_Sequence FROM DUAL;
- END LOOP;
- END IF;
- END;
- ';
- $result = $db->exec($trigger_sql);
- if (PEAR :: isError($result))
- {
- return $result;
- }
- return MDB2_OK;
- }
-
- // }}}
- // {{{ _dropAutoincrement()
-
-
- /**
- * drop an existing autoincrement sequence + trigger
- *
- * @param string $table name of the table
- * @return mixed MDB2_OK on success, a MDB2 error on failure
- * @access private
- */
- function _dropAutoincrement($table)
- {
- $db = & $this->getDBInstance();
- if (PEAR :: isError($db))
- {
- return $db;
- }
-
- $table = strtoupper($table);
- $trigger_name = $table . '_AI_PK';
- $trigger_name_quoted = $db->quote($trigger_name, 'text');
- $query = 'SELECT trigger_name FROM user_triggers';
- $query .= ' WHERE trigger_name=' . $trigger_name_quoted . ' OR trigger_name=' . strtoupper($trigger_name_quoted);
- $trigger = $db->queryOne($query);
- if (PEAR :: isError($trigger))
- {
- return $trigger;
- }
-
- if ($trigger)
- {
- $trigger_name = $db->quoteIdentifier($table . '_AI_PK', true);
- $trigger_sql = 'DROP TRIGGER ' . $trigger_name;
- $result = $db->exec($trigger_sql);
- if (PEAR :: isError($result))
- {
- return $db->raiseError($result, null, null, 'trigger for autoincrement PK could not be dropped', __FUNCTION__);
- }
-
- $result = $this->dropSequence($table);
- if (PEAR :: isError($result))
- {
- return $db->raiseError($result, null, null, 'sequence for autoincrement PK could not be dropped', __FUNCTION__);
- }
-
- $index_name = $table . '_AI_PK';
- $idxname_format = $db->getOption('idxname_format');
- $db->setOption('idxname_format', '%s');
- $result1 = $this->dropConstraint($table, $index_name);
- $db->setOption('idxname_format', $idxname_format);
- $result2 = $this->dropConstraint($table, $index_name);
- if (PEAR :: isError($result1) && PEAR :: isError($result2))
- {
- return $db->raiseError($result1, null, null, 'primary key for autoincrement PK could not be dropped', __FUNCTION__);
- }
- }
-
- return MDB2_OK;
- }
-
- // }}}
- // {{{ _getTemporaryTableQuery()
-
-
- /**
- * A method to return the required SQL string that fits between CREATE ... TABLE
- * to create the table as a temporary table.
- *
- * @return string The string required to be placed between "CREATE" and "TABLE"
- * to generate a temporary table, if possible.
- */
- function _getTemporaryTableQuery()
- {
- return 'GLOBAL TEMPORARY';
- }
-
- // }}}
- // {{{ _getAdvancedFKOptions()
-
-
- /**
- * Return the FOREIGN KEY query section dealing with non-standard options
- * as MATCH, INITIALLY DEFERRED, ON UPDATE, ...
- *
- * @param array $definition
- * @return string
- * @access protected
- */
- function _getAdvancedFKOptions($definition)
- {
- $query = '';
- if (! empty($definition['ondelete']) && (strtoupper($definition['ondelete']) != 'NO ACTION'))
- {
- $query .= ' ON DELETE ' . $definition['ondelete'];
- }
- if (! empty($definition['deferrable']))
- {
- $query .= ' DEFERRABLE';
- }
- else
- {
- $query .= ' NOT DEFERRABLE';
- }
- if (! empty($definition['initiallydeferred']))
- {
- $query .= ' INITIALLY DEFERRED';
- }
- else
- {
- $query .= ' INITIALLY IMMEDIATE';
- }
- return $query;
- }
-
- // }}}
- // {{{ createTable()
-
-
- /**
- * create a new table
- *
- * @param string $name Name of the database that should be created
- * @param array $fields Associative array that contains the definition of each field of the new table
- * The indexes of the array entries are the names of the fields of the table an
- * the array entry values are associative arrays like those that are meant to be
- * passed with the field definitions to get[Type]Declaration() functions.
- *
- * Example
- * array(
- *
- * 'id' => array(
- * 'type' => 'integer',
- * 'unsigned' => 1
- * 'notnull' => 1
- * 'default' => 0
- * ),
- * 'name' => array(
- * 'type' => 'text',
- * 'length' => 12
- * ),
- * 'password' => array(
- * 'type' => 'text',
- * 'length' => 12
- * )
- * );
- * @param array $options An associative array of table options:
- * array(
- * 'comment' => 'Foo',
- * 'temporary' => true|false,
- * );
- * @return mixed MDB2_OK on success, a MDB2 error on failure
- * @access public
- */
- function createTable($name, $fields, $options = array())
- {
- $db = & $this->getDBInstance();
- if (PEAR :: isError($db))
- {
- return $db;
- }
- $db->beginNestedTransaction();
- $result = parent :: createTable($name, $fields, $options);
- if (! PEAR :: isError($result))
- {
- foreach ($fields as $field_name => $field)
- {
- if (! empty($field['autoincrement']))
- {
- $result = $this->_makeAutoincrement($field_name, $name);
- }
- }
- }
- $db->completeNestedTransaction();
- return $result;
- }
-
- // }}}
- // {{{ dropTable()
-
-
- /**
- * drop an existing table
- *
- * @param string $name name of the table that should be dropped
- * @return mixed MDB2_OK on success, a MDB2 error on failure
- * @access public
- */
- function dropTable($name)
- {
- $db = & $this->getDBInstance();
- if (PEAR :: isError($db))
- {
- return $db;
- }
- $db->beginNestedTransaction();
- $result = $this->_dropAutoincrement($name);
- if (! PEAR :: isError($result))
- {
- $result = parent :: dropTable($name);
- }
- $db->completeNestedTransaction();
- return $result;
- }
-
- // }}}
- // {{{ truncateTable()
-
-
- /**
- * Truncate an existing table (if the TRUNCATE TABLE syntax is not supported,
- * it falls back to a DELETE FROM TABLE query)
- *
- * @param string $name name of the table that should be truncated
- * @return mixed MDB2_OK on success, a MDB2 error on failure
- * @access public
- */
- function truncateTable($name)
- {
- $db = & $this->getDBInstance();
- if (PEAR :: isError($db))
- {
- return $db;
- }
-
- $name = $db->quoteIdentifier($name, true);
- return $db->exec("TRUNCATE TABLE $name");
- }
-
- // }}}
- // {{{ vacuum()
-
-
- /**
- * Optimize (vacuum) all the tables in the db (or only the specified table)
- * and optionally run ANALYZE.
- *
- * @param string $table table name (all the tables if empty)
- * @param array $options an array with driver-specific options:
- * - timeout [int] (in seconds) [mssql-only]
- * - analyze [boolean] [pgsql and mysql]
- * - full [boolean] [pgsql-only]
- * - freeze [boolean] [pgsql-only]
- *
- * @return mixed MDB2_OK success, a MDB2 error on failure
- * @access public
- */
- function vacuum($table = null, $options = array())
- {
- // not needed in Oracle
- return MDB2_OK;
- }
-
- // }}}
- // {{{ alterTable()
-
-
- /**
- * alter an existing table
- *
- * @param string $name name of the table that is intended to be changed.
- * @param array $changes associative array that contains the details of each type
- * of change that is intended to be performed. The types of
- * changes that are currently supported are defined as follows:
- *
- * name
- *
- * New name for the table.
- *
- * add
- *
- * Associative array with the names of fields to be added as
- * indexes of the array. The value of each entry of the array
- * should be set to another associative array with the properties
- * of the fields to be added. The properties of the fields should
- * be the same as defined by the MDB2 parser.
- *
- *
- * remove
- *
- * Associative array with the names of fields to be removed as indexes
- * of the array. Currently the values assigned to each entry are ignored.
- * An empty array should be used for future compatibility.
- *
- * rename
- *
- * Associative array with the names of fields to be renamed as indexes
- * of the array. The value of each entry of the array should be set to
- * another associative array with the entry named name with the new
- * field name and the entry named Declaration that is expected to contain
- * the portion of the field declaration already in DBMS specific SQL code
- * as it is used in the CREATE TABLE statement.
- *
- * change
- *
- * Associative array with the names of the fields to be changed as indexes
- * of the array. Keep in mind that if it is intended to change either the
- * name of a field and any other properties, the change array entries
- * should have the new names of the fields as array indexes.
- *
- * The value of each entry of the array should be set to another associative
- * array with the properties of the fields to that are meant to be changed as
- * array entries. These entries should be assigned to the new values of the
- * respective properties. The properties of the fields should be the same
- * as defined by the MDB2 parser.
- *
- * Example
- * array(
- * 'name' => 'userlist',
- * 'add' => array(
- * 'quota' => array(
- * 'type' => 'integer',
- * 'unsigned' => 1
- * )
- * ),
- * 'remove' => array(
- * 'file_limit' => array(),
- * 'time_limit' => array()
- * ),
- * 'change' => array(
- * 'name' => array(
- * 'length' => '20',
- * 'definition' => array(
- * 'type' => 'text',
- * 'length' => 20,
- * ),
- * )
- * ),
- * 'rename' => array(
- * 'sex' => array(
- * 'name' => 'gender',
- * 'definition' => array(
- * 'type' => 'text',
- * 'length' => 1,
- * 'default' => 'M',
- * ),
- * )
- * )
- * )
- *
- * @param boolean $check indicates whether the function should just check if the DBMS driver
- * can perform the requested table alterations if the value is true or
- * actually perform them otherwise.
- * @access public
- *
- * @return mixed MDB2_OK on success, a MDB2 error on failure
- */
- function alterTable($name, $changes, $check)
- {
- $db = & $this->getDBInstance();
- if (PEAR :: isError($db))
- {
- return $db;
- }
-
- foreach ($changes as $change_name => $change)
- {
- switch ($change_name)
- {
- case 'add' :
- case 'remove' :
- case 'change' :
- case 'name' :
- case 'rename' :
- break;
- default :
- return $db->raiseError(MDB2_ERROR_CANNOT_ALTER, null, null, 'change type "' . $change_name . '" not yet supported', __FUNCTION__);
- }
- }
-
- if ($check)
- {
- return MDB2_OK;
- }
-
- $name = $db->quoteIdentifier($name, true);
-
- if (! empty($changes['add']) && is_array($changes['add']))
- {
- $fields = array();
- foreach ($changes['add'] as $field_name => $field)
- {
- $fields[] = $db->getDeclaration($field['type'], $field_name, $field);
- }
- $result = $db->exec("ALTER TABLE $name ADD (" . implode(', ', $fields) . ')');
- if (PEAR :: isError($result))
- {
- return $result;
- }
- }
-
- if (! empty($changes['change']) && is_array($changes['change']))
- {
- $fields = array();
- foreach ($changes['change'] as $field_name => $field)
- {
- //fix error "column to be modified to NOT NULL is already NOT NULL"
- if (! array_key_exists('notnull', $field))
- {
- unset($field['definition']['notnull']);
- }
- $fields[] = $db->getDeclaration($field['definition']['type'], $field_name, $field['definition']);
- }
- $result = $db->exec("ALTER TABLE $name MODIFY (" . implode(', ', $fields) . ')');
- if (PEAR :: isError($result))
- {
- return $result;
- }
- }
-
- if (! empty($changes['rename']) && is_array($changes['rename']))
- {
- foreach ($changes['rename'] as $field_name => $field)
- {
- $field_name = $db->quoteIdentifier($field_name, true);
- $query = "ALTER TABLE $name RENAME COLUMN $field_name TO " . $db->quoteIdentifier($field['name']);
- $result = $db->exec($query);
- if (PEAR :: isError($result))
- {
- return $result;
- }
- }
- }
-
- if (! empty($changes['remove']) && is_array($changes['remove']))
- {
- $fields = array();
- foreach ($changes['remove'] as $field_name => $field)
- {
- $fields[] = $db->quoteIdentifier($field_name, true);
- }
- $result = $db->exec("ALTER TABLE $name DROP COLUMN " . implode(', ', $fields));
- if (PEAR :: isError($result))
- {
- return $result;
- }
- }
-
- if (! empty($changes['name']))
- {
- $change_name = $db->quoteIdentifier($changes['name'], true);
- $result = $db->exec("ALTER TABLE $name RENAME TO " . $change_name);
- if (PEAR :: isError($result))
- {
- return $result;
- }
- }
-
- return MDB2_OK;
- }
-
- // }}}
- // {{{ _fetchCol()
-
-
- /**
- * Utility method to fetch and format a column from a resultset
- *
- * @param resource $result
- * @param boolean $fixname (used when listing indices or constraints)
- * @return mixed array of names on success, a MDB2 error on failure
- * @access private
- */
- function _fetchCol($result, $fixname = false)
- {
- if (PEAR :: isError($result))
- {
- return $result;
- }
- $col = $result->fetchCol();
- if (PEAR :: isError($col))
- {
- return $col;
- }
- $result->free();
-
- $db = & $this->getDBInstance();
- if (PEAR :: isError($db))
- {
- return $db;
- }
-
- if ($fixname)
- {
- foreach ($col as $k => $v)
- {
- $col[$k] = $this->_fixIndexName($v);
- }
- }
-
- if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE && $db->options['field_case'] == CASE_LOWER)
- {
- $col = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $col);
- }
- return $col;
- }
-
- // }}}
- // {{{ listDatabases()
-
-
- /**
- * list all databases
- *
- * @return mixed array of database names on success, a MDB2 error on failure
- * @access public
- */
- function listDatabases()
- {
- $db = & $this->getDBInstance();
- if (PEAR :: isError($db))
- {
- return $db;
- }
-
- if (! $db->options['emulate_database'])
- {
- return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, 'database listing is only supported if the "emulate_database" option is enabled', __FUNCTION__);
- }
-
- if ($db->options['database_name_prefix'])
- {
- $query = 'SELECT SUBSTR(username, ';
- $query .= (strlen($db->options['database_name_prefix']) + 1);
- $query .= ") FROM sys.dba_users WHERE username LIKE '";
- $query .= $db->options['database_name_prefix'] . "%'";
- }
- else
- {
- $query = 'SELECT username FROM sys.dba_users';
- }
- $result = $db->standaloneQuery($query, array('text'), false);
- return $this->_fetchCol($result);
- }
-
- // }}}
- // {{{ listUsers()
-
-
- /**
- * list all users
- *
- * @return mixed array of user names on success, a MDB2 error on failure
- * @access public
- */
- function listUsers()
- {
- $db = & $this->getDBInstance();
- if (PEAR :: isError($db))
- {
- return $db;
- }
-
- if ($db->options['emulate_database'] && $db->options['database_name_prefix'])
- {
- $query = 'SELECT SUBSTR(username, ';
- $query .= (strlen($db->options['database_name_prefix']) + 1);
- $query .= ") FROM sys.dba_users WHERE username NOT LIKE '";
- $query .= $db->options['database_name_prefix'] . "%'";
- }
- else
- {
- $query = 'SELECT username FROM sys.dba_users';
- }
- return $db->queryCol($query);
- }
-
- // }}}
- // {{{ listViews()
-
-
- /**
- * list all views in the current database
- *
- * @param string owner, the current is default
- * @return mixed array of view names on success, a MDB2 error on failure
- * @access public
- */
- function listViews($owner = null)
- {
- $db = & $this->getDBInstance();
- if (PEAR :: isError($db))
- {
- return $db;
- }
-
- if (empty($owner))
- {
- $owner = $db->dsn['username'];
- }
-
- $query = 'SELECT view_name
- FROM sys.all_views
- WHERE owner=? OR owner=?';
- $stmt = $db->prepare($query);
- if (PEAR :: isError($stmt))
- {
- return $stmt;
- }
- $result = $stmt->execute(array($owner, strtoupper($owner)));
- return $this->_fetchCol($result);
- }
-
- // }}}
- // {{{ listFunctions()
-
-
- /**
- * list all functions in the current database
- *
- * @param string owner, the current is default
- * @return mixed array of function names on success, a MDB2 error on failure
- * @access public
- */
- function listFunctions($owner = null)
- {
- $db = & $this->getDBInstance();
- if (PEAR :: isError($db))
- {
- return $db;
- }
-
- if (empty($owner))
- {
- $owner = $db->dsn['username'];
- }
-
- $query = "SELECT name
- FROM sys.all_source
- WHERE line = 1
- AND type = 'FUNCTION'
- AND (owner=? OR owner=?)";
- $stmt = $db->prepare($query);
- if (PEAR :: isError($stmt))
- {
- return $stmt;
- }
- $result = $stmt->execute(array($owner, strtoupper($owner)));
- return $this->_fetchCol($result);
- }
-
- // }}}
- // {{{ listTableTriggers()
-
-
- /**
- * list all triggers in the database that reference a given table
- *
- * @param string table for which all referenced triggers should be found
- * @return mixed array of trigger names on success, a MDB2 error on failure
- * @access public
- */
- function listTableTriggers($table = null)
- {
- $db = & $this->getDBInstance();
- if (PEAR :: isError($db))
- {
- return $db;
- }
-
- if (empty($owner))
- {
- $owner = $db->dsn['username'];
- }
-
- $query = "SELECT trigger_name
- FROM sys.all_triggers
- WHERE (table_name=? OR table_name=?)
- AND (owner=? OR owner=?)";
- $stmt = $db->prepare($query);
- if (PEAR :: isError($stmt))
- {
- return $stmt;
- }
- $args = array($table, strtoupper($table), $owner, strtoupper($owner));
- $result = $stmt->execute($args);
- return $this->_fetchCol($result);
- }
-
- // }}}
- // {{{ listTables()
-
-
- /**
- * list all tables in the database
- *
- * @param string owner, the current is default
- * @return mixed array of table names on success, a MDB2 error on failure
- * @access public
- */
- function listTables($owner = null)
- {
- $db = & $this->getDBInstance();
- if (PEAR :: isError($db))
- {
- return $db;
- }
-
- if (empty($owner))
- {
- $owner = $db->dsn['username'];
- }
-
- $query = 'SELECT table_name
- FROM sys.all_tables
- WHERE owner=? OR owner=?';
- $stmt = $db->prepare($query);
- if (PEAR :: isError($stmt))
- {
- return $stmt;
- }
- $result = $stmt->execute(array($owner, strtoupper($owner)));
- return $this->_fetchCol($result);
- }
-
- // }}}
- // {{{ listTableFields()
-
-
- /**
- * list all fields in a table in the current database
- *
- * @param string $table name of table that should be used in method
- * @return mixed array of field names on success, a MDB2 error on failure
- * @access public
- */
- function listTableFields($table)
- {
- $db = & $this->getDBInstance();
- if (PEAR :: isError($db))
- {
- return $db;
- }
-
- list($owner, $table) = $this->splitTableSchema($table);
- if (empty($owner))
- {
- $owner = $db->dsn['username'];
- }
-
- $query = 'SELECT column_name
- FROM all_tab_columns
- WHERE (table_name=? OR table_name=?)
- AND (owner=? OR owner=?)
- ORDER BY column_id';
- $stmt = $db->prepare($query);
- if (PEAR :: isError($stmt))
- {
- return $stmt;
- }
- $args = array($table, strtoupper($table), $owner, strtoupper($owner));
- $result = $stmt->execute($args);
- return $this->_fetchCol($result);
- }
-
- // }}}
- // {{{ listTableIndexes()
-
-
- /**
- * list all indexes in a table
- *
- * @param string $table name of table that should be used in method
- * @return mixed array of index names on success, a MDB2 error on failure
- * @access public
- */
- function listTableIndexes($table)
- {
- $db = & $this->getDBInstance();
- if (PEAR :: isError($db))
- {
- return $db;
- }
-
- list($owner, $table) = $this->splitTableSchema($table);
- if (empty($owner))
- {
- $owner = $db->dsn['username'];
- }
-
- $query = 'SELECT i.index_name name
- FROM all_indexes i
- LEFT JOIN all_constraints c
- ON c.index_name = i.index_name
- AND c.owner = i.owner
- AND c.table_name = i.table_name
- WHERE (i.table_name=? OR i.table_name=?)
- AND (i.owner=? OR i.owner=?)
- AND c.index_name IS NULL
- AND i.generated=' . $db->quote('N', 'text');
- $stmt = $db->prepare($query);
- if (PEAR :: isError($stmt))
- {
- return $stmt;
- }
- $args = array($table, strtoupper($table), $owner, strtoupper($owner));
- $result = $stmt->execute($args);
- return $this->_fetchCol($result, true);
- }
-
- // }}}
- // {{{ createConstraint()
-
-
- /**
- * create a constraint on a table
- *
- * @param string $table name of the table on which the constraint is to be created
- * @param string $name name of the constraint to be created
- * @param array $definition associative array that defines properties of the constraint to be created.
- * Currently, only one property named FIELDS is supported. This property
- * is also an associative with the names of the constraint fields as array
- * constraints. Each entry of this array is set to another type of associative
- * array that specifies properties of the constraint that are specific to
- * each field.
- *
- * Example
- * array(
- * 'fields' => array(
- * 'user_name' => array(),
- * 'last_login' => array()
- * )
- * )
- * @return mixed MDB2_OK on success, a MDB2 error on failure
- * @access public
- */
- function createConstraint($table, $name, $definition)
- {
- $result = parent :: createConstraint($table, $name, $definition);
- if (PEAR :: isError($result))
- {
- return $result;
- }
- if (! empty($definition['foreign']))
- {
- return $this->_createFKTriggers($table, array($name => $definition));
- }
- return MDB2_OK;
- }
-
- // }}}
- // {{{ dropConstraint()
-
-
- /**
- * drop existing constraint
- *
- * @param string $table name of table that should be used in method
- * @param string $name name of the constraint to be dropped
- * @param string $primary hint if the constraint is primary
- * @return mixed MDB2_OK on success, a MDB2 error on failure
- * @access public
- */
- function dropConstraint($table, $name, $primary = false)
- {
- $db = & $this->getDBInstance();
- if (PEAR :: isError($db))
- {
- return $db;
- }
-
- //is it a FK constraint? If so, also delete the associated triggers
- $db->loadModule('Reverse', null, true);
- $definition = $db->reverse->getTableConstraintDefinition($table, $name);
- if (! PEAR :: isError($definition) && ! empty($definition['foreign']))
- {
- //first drop the FK enforcing triggers
- $result = $this->_dropFKTriggers($table, $name, $definition['references']['table']);
- if (PEAR :: isError($result))
- {
- return $result;
- }
- }
-
- return parent :: dropConstraint($table, $name, $primary);
- }
-
- // }}}
- // {{{ _createFKTriggers()
-
-
- /**
- * Create triggers to enforce the FOREIGN KEY constraint on the table
- *
- * @param string $table table name
- * @param array $foreign_keys FOREIGN KEY definitions
- *
- * @return mixed MDB2_OK on success, a MDB2 error on failure
- * @access private
- */
- function _createFKTriggers($table, $foreign_keys)
- {
- $db = & $this->getDBInstance();
- if (PEAR :: isError($db))
- {
- return $db;
- }
- // create triggers to enforce FOREIGN KEY constraints
- if ($db->supports('triggers') && ! empty($foreign_keys))
- {
- $table = $db->quoteIdentifier($table, true);
- foreach ($foreign_keys as $fkname => $fkdef)
- {
- if (empty($fkdef))
- {
- continue;
- }
- $fkdef['onupdate'] = empty($fkdef['onupdate']) ? $db->options['default_fk_action_onupdate'] : strtoupper($fkdef['onupdate']);
- if ('RESTRICT' == $fkdef['onupdate'] || 'NO ACTION' == $fkdef['onupdate'])
- {
- // already handled by default
- continue;
- }
-
- $trigger_name = substr(strtolower($fkname . '_pk_upd_trg'), 0, $db->options['max_identifiers_length']);
- $table_fields = array_keys($fkdef['fields']);
- $referenced_fields = array_keys($fkdef['references']['fields']);
-
- //create the ON UPDATE trigger on the primary table
- $restrict_action = ' IF (SELECT ';
- $aliased_fields = array();
- foreach ($table_fields as $field)
- {
- $aliased_fields[] = $table . '.' . $field . ' AS ' . $field;
- }
- $restrict_action .= implode(',', $aliased_fields) . ' FROM ' . $table . ' WHERE ';
- $conditions = array();
- $new_values = array();
- $null_values = array();
- for($i = 0; $i < count($table_fields); $i ++)
- {
- $conditions[] = $table_fields[$i] . ' = :OLD.' . $referenced_fields[$i];
- $new_values[] = $table_fields[$i] . ' = :NEW.' . $referenced_fields[$i];
- $null_values[] = $table_fields[$i] . ' = NULL';
- }
-
- $cascade_action = 'UPDATE ' . $table . ' SET ' . implode(', ', $new_values) . ' WHERE ' . implode(' AND ', $conditions) . ';';
- $setnull_action = 'UPDATE ' . $table . ' SET ' . implode(', ', $null_values) . ' WHERE ' . implode(' AND ', $conditions) . ';';
-
- if ('SET DEFAULT' == $fkdef['onupdate'] || 'SET DEFAULT' == $fkdef['ondelete'])
- {
- $db->loadModule('Reverse', null, true);
- $default_values = array();
- foreach ($table_fields as $table_field)
- {
- $field_definition = $db->reverse->getTableFieldDefinition($table, $field);
- if (PEAR :: isError($field_definition))
- {
- return $field_definition;
- }
- $default_values[] = $table_field . ' = ' . $field_definition[0]['default'];
- }
- $setdefault_action = 'UPDATE ' . $table . ' SET ' . implode(', ', $default_values) . ' WHERE ' . implode(' AND ', $conditions) . ';';
- }
-
- $query = 'CREATE TRIGGER %s' . ' %s ON ' . $fkdef['references']['table'] . ' FOR EACH ROW ' . ' BEGIN ';
-
- if ('CASCADE' == $fkdef['onupdate'])
- {
- $sql_update = sprintf($query, $trigger_name, 'BEFORE UPDATE', 'update') . $cascade_action;
- }
- elseif ('SET NULL' == $fkdef['onupdate'])
- {
- $sql_update = sprintf($query, $trigger_name, 'BEFORE UPDATE', 'update') . $setnull_action;
- }
- elseif ('SET DEFAULT' == $fkdef['onupdate'])
- {
- $sql_update = sprintf($query, $trigger_name, 'BEFORE UPDATE', 'update') . $setdefault_action;
- }
- $sql_update .= ' END;';
- $result = $db->exec($sql_update);
- if (PEAR :: isError($result))
- {
- return $result;
- }
- }
- }
- return MDB2_OK;
- }
-
- // }}}
- // {{{ _dropFKTriggers()
-
-
- /**
- * Drop the triggers created to enforce the FOREIGN KEY constraint on the table
- *
- * @param string $table table name
- * @param string $fkname FOREIGN KEY constraint name
- * @param string $referenced_table referenced table name
- *
- * @return mixed MDB2_OK on success, a MDB2 error on failure
- * @access private
- */
- function _dropFKTriggers($table, $fkname, $referenced_table)
- {
- $db = & $this->getDBInstance();
- if (PEAR :: isError($db))
- {
- return $db;
- }
-
- $triggers = $this->listTableTriggers($table);
- $triggers2 = $this->listTableTriggers($referenced_table);
- if (! PEAR :: isError($triggers2) && ! PEAR :: isError($triggers))
- {
- $triggers = array_merge($triggers, $triggers2);
- $trigger_name = substr(strtolower($fkname . '_pk_upd_trg'), 0, $db->options['max_identifiers_length']);
- $pattern = '/^' . $trigger_name . '$/i';
- foreach ($triggers as $trigger)
- {
- if (preg_match($pattern, $trigger))
- {
- $result = $db->exec('DROP TRIGGER ' . $trigger);
- if (PEAR :: isError($result))
- {
- return $result;
- }
- }
- }
- }
- return MDB2_OK;
- }
-
- // }}}
- // {{{ listTableConstraints()
-
-
- /**
- * list all constraints in a table
- *
- * @param string $table name of table that should be used in method
- * @return mixed array of constraint names on success, a MDB2 error on failure
- * @access public
- */
- function listTableConstraints($table)
- {
- $db = & $this->getDBInstance();
- if (PEAR :: isError($db))
- {
- return $db;
- }
-
- list($owner, $table) = $this->splitTableSchema($table);
- if (empty($owner))
- {
- $owner = $db->dsn['username'];
- }
-
- $query = 'SELECT constraint_name
- FROM all_constraints
- WHERE (table_name=? OR table_name=?)
- AND (owner=? OR owner=?)';
- $stmt = $db->prepare($query);
- if (PEAR :: isError($stmt))
- {
- return $stmt;
- }
- $args = array($table, strtoupper($table), $owner, strtoupper($owner));
- $result = $stmt->execute($args);
- return $this->_fetchCol($result, true);
- }
-
- // }}}
- // {{{ createSequence()
-
-
- /**
- * create sequence
- *
- * @param object $db database object that is extended by this class
- * @param string $seq_name name of the sequence to be created
- * @param string $start start value of the sequence; default is 1
- * @return mixed MDB2_OK on success, a MDB2 error on failure
- * @access public
- */
- function createSequence($seq_name, $start = 1)
- {
- $db = & $this->getDBInstance();
- if (PEAR :: isError($db))
- {
- return $db;
- }
-
- $sequence_name = $db->quoteIdentifier($db->getSequenceName($seq_name), true);
- $query = "CREATE SEQUENCE $sequence_name START WITH $start INCREMENT BY 1 NOCACHE";
- $query .= ($start < 1 ? " MINVALUE $start" : '');
- return $db->exec($query);
- }
-
- // }}}
- // {{{ dropSequence()
-
-
- /**
- * drop existing sequence
- *
- * @param object $db database object that is extended by this class
- * @param string $seq_name name of the sequence to be dropped
- * @return mixed MDB2_OK on success, a MDB2 error on failure
- * @access public
- */
- function dropSequence($seq_name)
- {
- $db = & $this->getDBInstance();
- if (PEAR :: isError($db))
- {
- return $db;
- }
-
- $sequence_name = $db->quoteIdentifier($db->getSequenceName($seq_name), true);
- return $db->exec("DROP SEQUENCE $sequence_name");
- }
-
- // }}}
- // {{{ listSequences()
-
-
- /**
- * list all sequences in the current database
- *
- * @param string owner, the current is default
- * @return mixed array of sequence names on success, a MDB2 error on failure
- * @access public
- */
- function listSequences($owner = null)
- {
- $db = & $this->getDBInstance();
- if (PEAR :: isError($db))
- {
- return $db;
- }
-
- if (empty($owner))
- {
- $owner = $db->dsn['username'];
- }
-
- $query = 'SELECT sequence_name
- FROM sys.all_sequences
- WHERE (sequence_owner=? OR sequence_owner=?)';
- $stmt = $db->prepare($query);
- if (PEAR :: isError($stmt))
- {
- return $stmt;
- }
- $result = $stmt->execute(array($owner, strtoupper($owner)));
- if (PEAR :: isError($result))
- {
- return $result;
- }
- $col = $result->fetchCol();
- if (PEAR :: isError($col))
- {
- return $col;
- }
- $result->free();
-
- foreach ($col as $k => $v)
- {
- $col[$k] = $this->_fixSequenceName($v);
- }
-
- if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE && $db->options['field_case'] == CASE_LOWER)
- {
- $col = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $col);
- }
- return $col;
- }
- }
- ?>