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+<?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 295587 2010-02-28 17:16:38Z quipo $
+
+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__);
+ }
+
+ if (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 = $this->createSequence($table, $start);
+ $db->commit();
+ } else {
+ $result = $this->createSequence($table, $start);
+ }
+ if (PEAR::isError($result)) {
+ return $db->raiseError($result, null, null,
+ 'sequence for autoincrement PK could not be created', __FUNCTION__);
+ }
+ $seq_name = $db->getSequenceName($table);
+ $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($result)) {
+ if ($result->getCode() === MDB2_ERROR_ALREADY_EXISTS) {
+ return MDB2_OK;
+ }
+ 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;
+ }
+}
+?> \ No newline at end of file
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-30 17:44:46 +0000