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<?php
// +----------------------------------------------------------------------+
// | PHP versions 4 and 5 |
// +----------------------------------------------------------------------+
// | Copyright (c) 1998-2007 Manuel Lemos, Tomas V.V.Cox, |
// | Stig. S. Bakken, Lukas Smith, Lorenzo Alberton |
// | 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: Lorenzo Alberton <l.alberton@quipo.it> |
// +----------------------------------------------------------------------+
//
// $Id: ibase.php,v 1.102 2007/03/12 14:31:11 quipo Exp $
require_once 'MDB2/Driver/Manager/Common.php';
/**
* MDB2 FireBird/InterBase driver for the management modules
*
* @package MDB2
* @category Database
* @author Lorenzo Alberton <l.alberton@quipo.it>
*/
class MDB2_Driver_Manager_ibase extends MDB2_Driver_Manager_Common
{
// {{{ createDatabase()
/**
* create a new database
*
* @param string $name name of the database that should be created
* @return mixed MDB2_OK on success, a MDB2 error on failure
* @access public
*/
function createDatabase($name)
{
$db =& $this->getDBInstance();
if (PEAR::isError($db)) {
return $db;
}
return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, 'Create database',
'PHP Interbase API does not support direct queries. You have to '.
'create the db manually by using isql command or a similar program', __FUNCTION__);
}
// }}}
// {{{ dropDatabase()
/**
* drop an existing database
*
* @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;
}
return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, 'Drop database',
'PHP Interbase API does not support direct queries. You have '.
'to drop the db manually by using isql command or a similar program', __FUNCTION__);
}
// }}}
// {{{ _silentCommit()
/**
* conditional COMMIT query to make changes permanent, when auto
* @access private
*/
function _silentCommit()
{
$db =& $this->getDBInstance();
if (PEAR::isError($db)) {
return $db;
}
if (!$db->in_transaction) {
@$db->exec('COMMIT');
}
}
// }}}
// {{{ _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 = null)
{
$db =& $this->getDBInstance();
if (PEAR::isError($db)) {
return $db;
}
if (is_null($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 = $db->manager->createSequence($table, $start);
$db->commit();
} else {
$result = $db->manager->createSequence($table, $start);
}
if (PEAR::isError($result)) {
return $db->raiseError(null, null, null,
'sequence for autoincrement PK could not be created', __FUNCTION__);
}
$sequence_name = $db->getSequenceName($table);
$trigger_name = $db->quoteIdentifier($table . '_AUTOINCREMENT_PK', true);
$table = $db->quoteIdentifier($table, true);
$name = $db->quoteIdentifier($name, true);
$trigger_sql = 'CREATE TRIGGER ' . $trigger_name . ' FOR ' . $table . '
ACTIVE BEFORE INSERT POSITION 0
AS
BEGIN
IF (NEW.' . $name . ' IS NULL OR NEW.' . $name . ' = 0) THEN
NEW.' . $name . ' = GEN_ID('.$sequence_name.', 1);
END';
$result = $db->exec($trigger_sql);
$this->_silentCommit();
return $result;
}
// }}}
// {{{ _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;
}
$result = $db->manager->dropSequence($table);
if (PEAR::isError($result)) {
return $db->raiseError(null, null, null,
'sequence for autoincrement PK could not be dropped', __FUNCTION__);
}
//remove autoincrement trigger associated with the table
$table = $db->quote(strtoupper($table), 'text');
$trigger_name = $db->quote(strtoupper($table) . '_AUTOINCREMENT_PK', 'text');
$result = $db->exec("DELETE FROM RDB\$TRIGGERS WHERE UPPER(RDB\$RELATION_NAME)=$table AND UPPER(RDB\$TRIGGER_NAME)=$trigger_name");
if (PEAR::isError($result)) {
return $db->raiseError(null, null, null,
'trigger for autoincrement PK could not be dropped', __FUNCTION__);
}
return MDB2_OK;
}
// }}}
// {{{ 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,
* ),
* 'description' => 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;
}
$query = $this->_getCreateTableQuery($name, $fields, $options);
if (PEAR::isError($query)) {
return $query;
}
$options_strings = array();
if (!empty($options['comment'])) {
$options_strings['comment'] = '/* '.$db->quote($options['comment'], 'text'). ' */';
}
if (!empty($options_strings)) {
$query.= ' '.implode(' ', $options_strings);
}
$result = $db->exec($query);
if (PEAR::isError($result)) {
return $result;
}
$this->_silentCommit();
foreach ($fields as $field_name => $field) {
if (!empty($field['autoincrement'])) {
//create PK constraint
$pk_definition = array(
'fields' => array($field_name => array()),
'primary' => true,
);
//$pk_name = $name.'_PK';
$pk_name = null;
$result = $this->createConstraint($name, $pk_name, $pk_definition);
if (PEAR::isError($result)) {
return $result;
}
//create autoincrement sequence + trigger
return $this->_makeAutoincrement($field_name, $name, 1);
}
}
}
// }}}
// {{{ checkSupportedChanges()
/**
* Check if planned changes are supported
*
* @param string $name name of the database that should be dropped
* @return mixed MDB2_OK on success, a MDB2 error on failure
* @access public
*/
function checkSupportedChanges(&$changes)
{
$db =& $this->getDBInstance();
if (PEAR::isError($db)) {
return $db;
}
foreach ($changes as $change_name => $change) {
switch ($change_name) {
case 'notnull':
return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
'it is not supported changes to field not null constraint', __FUNCTION__);
case 'default':
return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
'it is not supported changes to field default value', __FUNCTION__);
case 'length':
/*
return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
'it is not supported changes to field default length', __FUNCTION__);
*/
case 'unsigned':
case 'type':
case 'declaration':
case 'definition':
break;
default:
return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
'it is not supported change of type' . $change_name, __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';
}
// }}}
// {{{ 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)
{
$result = $this->_dropAutoincrement($name);
if (PEAR::isError($result)) {
return $result;
}
$result = parent::dropTable($name);
$this->_silentCommit();
return $result;
}
// }}}
// {{{ 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 'rename':
break;
case 'change':
foreach ($changes['change'] as $field) {
if (PEAR::isError($err = $this->checkSupportedChanges($field))) {
return $err;
}
}
break;
default:
return $db->raiseError(MDB2_ERROR_CANNOT_ALTER, null, null,
'change type ' . $change_name . ' not yet supported', __FUNCTION__);
}
}
if ($check) {
return MDB2_OK;
}
$query = '';
if (!empty($changes['add']) && is_array($changes['add'])) {
foreach ($changes['add'] as $field_name => $field) {
if ($query) {
$query.= ', ';
}
$query.= 'ADD ' . $db->getDeclaration($field['type'], $field_name, $field);
}
}
if (!empty($changes['remove']) && is_array($changes['remove'])) {
foreach ($changes['remove'] as $field_name => $field) {
if ($query) {
$query.= ', ';
}
$field_name = $db->quoteIdentifier($field_name, true);
$query.= 'DROP ' . $field_name;
}
}
if (!empty($changes['rename']) && is_array($changes['rename'])) {
foreach ($changes['rename'] as $field_name => $field) {
if ($query) {
$query.= ', ';
}
$field_name = $db->quoteIdentifier($field_name, true);
$query.= 'ALTER ' . $field_name . ' TO ' . $db->quoteIdentifier($field['name'], true);
}
}
if (!empty($changes['change']) && is_array($changes['change'])) {
// missing support to change DEFAULT and NULLability
foreach ($changes['change'] as $field_name => $field) {
if (PEAR::isError($err = $this->checkSupportedChanges($field))) {
return $err;
}
if ($query) {
$query.= ', ';
}
$db->loadModule('Datatype', null, true);
$field_name = $db->quoteIdentifier($field_name, true);
$query.= 'ALTER ' . $field_name.' TYPE ' . $db->datatype->getTypeDeclaration($field['definition']);
}
}
if (!strlen($query)) {
return MDB2_OK;
}
$name = $db->quoteIdentifier($name, true);
$result = $db->exec("ALTER TABLE $name $query");
$this->_silentCommit();
return $result;
}
// }}}
// {{{ listTables()
/**
* list all tables in the current database
*
* @return mixed array of table names on success, a MDB2 error on failure
* @access public
*/
function listTables()
{
$db =& $this->getDBInstance();
if (PEAR::isError($db)) {
return $db;
}
$query = 'SELECT RDB$RELATION_NAME FROM RDB$RELATIONS WHERE RDB$SYSTEM_FLAG=0 AND RDB$VIEW_BLR IS NULL';
$result = $db->queryCol($query);
if (PEAR::isError($result)) {
return $result;
}
if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
$result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
}
return $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;
}
$table = $db->quote(strtoupper($table), 'text');
$query = "SELECT RDB\$FIELD_NAME FROM RDB\$RELATION_FIELDS WHERE UPPER(RDB\$RELATION_NAME)=$table";
$result = $db->queryCol($query);
if (PEAR::isError($result)) {
return $result;
}
if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
$result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
}
return $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;
}
return $db->queryCol('SELECT DISTINCT RDB$USER FROM RDB$USER_PRIVILEGES');
}
// }}}
// {{{ listViews()
/**
* list all views in the current database
*
* @return mixed array of view names on success, a MDB2 error on failure
* @access public
*/
function listViews()
{
$db =& $this->getDBInstance();
if (PEAR::isError($db)) {
return $db;
}
$result = $db->queryCol('SELECT DISTINCT RDB$VIEW_NAME FROM RDB$VIEW_RELATIONS');
if (PEAR::isError($result)) {
return $result;
}
if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
$result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
}
return $result;
}
// }}}
// {{{ listTableViews()
/**
* list the views in the database that reference a given table
*
* @param string table for which all referenced views should be found
* @return mixed array of view names on success, a MDB2 error on failure
* @access public
*/
function listTableViews($table)
{
$db =& $this->getDBInstance();
if (PEAR::isError($db)) {
return $db;
}
$query = 'SELECT DISTINCT RDB$VIEW_NAME FROM RDB$VIEW_RELATIONS';
$table = $db->quote(strtoupper($table), 'text');
$query .= " WHERE UPPER(RDB\$RELATION_NAME)=$table";
$result = $db->queryCol($query);
if (PEAR::isError($result)) {
return $result;
}
if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
$result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
}
return $result;
}
// }}}
// {{{ listFunctions()
/**
* list all functions (and stored procedures) in the current database
*
* @return mixed array of function names on success, a MDB2 error on failure
* @access public
*/
function listFunctions()
{
$db =& $this->getDBInstance();
if (PEAR::isError($db)) {
return $db;
}
$query = 'SELECT RDB$FUNCTION_NAME FROM RDB$FUNCTIONS WHERE RDB$SYSTEM_FLAG IS NULL
UNION
SELECT RDB$PROCEDURE_NAME FROM RDB$PROCEDURES';
$result = $db->queryCol($query);
if (PEAR::isError($result)) {
return $result;
}
if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
$result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
}
return $result;
}
// }}}
// {{{ listTableTriggers()
/**
* list all triggers in the database that reference a given table
*
* @param string table for which all referenced triggers should be found
* @return mixed array of trigger names on success, a MDB2 error on failure
* @access public
*/
function listTableTriggers($table = null)
{
$db =& $this->getDBInstance();
if (PEAR::isError($db)) {
return $db;
}
$query = 'SELECT RDB$TRIGGER_NAME
FROM RDB$TRIGGERS
WHERE RDB$SYSTEM_FLAG IS NULL
OR RDB$SYSTEM_FLAG = 0';
if (!is_null($table)) {
$table = $db->quote(strtoupper($table), 'text');
$query .= " AND UPPER(RDB\$RELATION_NAME)=$table";
}
$result = $db->queryCol($query);
if (PEAR::isError($result)) {
return $result;
}
if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
$result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
}
return $result;
}
// }}}
// {{{ createIndex()
/**
* Get the stucture of a field into an array
*
* @param string $table name of the table on which the index is to be created
* @param string $name name of the index to be created
* @param array $definition associative array that defines properties of the index to be created.
* Currently, only one property named FIELDS is supported. This property
* is also an associative with the names of the index fields as array
* indexes. Each entry of this array is set to another type of associative
* array that specifies properties of the index that are specific to
* each field.
*
* Currently, only the sorting property is supported. It should be used
* to define the sorting direction of the index. It may be set to either
* ascending or descending.
*
* Not all DBMS support index sorting direction configuration. The DBMS
* drivers of those that do not support it ignore this property. Use the
* function support() to determine whether the DBMS driver can manage indexes.
* Example
* array(
* 'fields' => array(
* 'user_name' => array(
* 'sorting' => 'ascending'
* ),
* 'last_login' => array()
* )
* )
* @return mixed MDB2_OK on success, a MDB2 error on failure
* @access public
*/
function createIndex($table, $name, $definition)
{
$db =& $this->getDBInstance();
if (PEAR::isError($db)) {
return $db;
}
$query = 'CREATE';
$query_sort = '';
foreach ($definition['fields'] as $field) {
if (!strcmp($query_sort, '') && isset($field['sorting'])) {
switch ($field['sorting']) {
case 'ascending':
$query_sort = ' ASC';
break;
case 'descending':
$query_sort = ' DESC';
break;
}
}
}
$table = $db->quoteIdentifier($table, true);
$name = $db->quoteIdentifier($db->getIndexName($name), true);
$query .= $query_sort. " INDEX $name ON $table";
$fields = array();
foreach (array_keys($definition['fields']) as $field) {
$fields[] = $db->quoteIdentifier($field, true);
}
$query .= ' ('.implode(', ', $fields) . ')';
$result = $db->exec($query);
$this->_silentCommit();
return $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;
}
$table = $db->quote(strtoupper($table), 'text');
$query = "SELECT RDB\$INDEX_NAME
FROM RDB\$INDICES
WHERE UPPER(RDB\$RELATION_NAME)=$table
AND RDB\$UNIQUE_FLAG IS NULL
AND RDB\$FOREIGN_KEY IS NULL";
$indexes = $db->queryCol($query, 'text');
if (PEAR::isError($indexes)) {
return $indexes;
}
$result = array();
foreach ($indexes as $index) {
$index = $this->_fixIndexName($index);
if (!empty($index)) {
$result[$index] = true;
}
}
if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
$result = array_change_key_case($result, $db->options['field_case']);
}
return array_keys($result);
}
// }}}
// {{{ 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)
{
$db =& $this->getDBInstance();
if (PEAR::isError($db)) {
return $db;
}
$table = $db->quoteIdentifier($table, true);
if (!empty($name)) {
$name = $db->quoteIdentifier($db->getIndexName($name), true);
}
$query = "ALTER TABLE $table ADD";
if (!empty($definition['primary'])) {
if (!empty($name)) {
$query.= ' CONSTRAINT '.$name;
}
$query.= ' PRIMARY KEY';
} else {
$query.= ' CONSTRAINT '. $name;
if (!empty($definition['unique'])) {
$query.= ' UNIQUE';
}
}
$fields = array();
foreach (array_keys($definition['fields']) as $field) {
$fields[] = $db->quoteIdentifier($field, true);
}
$query .= ' ('. implode(', ', $fields) . ')';
$result = $db->exec($query);
$this->_silentCommit();
return $result;
}
// }}}
// {{{ 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;
}
$table = $db->quote(strtoupper($table), 'text');
$query = "SELECT RDB\$INDEX_NAME
FROM RDB\$INDICES
WHERE UPPER(RDB\$RELATION_NAME)=$table
AND (
RDB\$UNIQUE_FLAG IS NOT NULL
OR RDB\$FOREIGN_KEY IS NOT NULL
)";
$constraints = $db->queryCol($query);
if (PEAR::isError($constraints)) {
return $constraints;
}
$result = array();
foreach ($constraints as $constraint) {
$constraint = $this->_fixIndexName($constraint);
if (!empty($constraint)) {
$result[$constraint] = true;
}
}
if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
$result = array_change_key_case($result, $db->options['field_case']);
}
return array_keys($result);
}
// }}}
// {{{ createSequence()
/**
* create sequence
*
* @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 = $db->getSequenceName($seq_name);
if (PEAR::isError($result = $db->exec('CREATE GENERATOR '.$sequence_name))) {
return $result;
}
if (PEAR::isError($result = $db->exec('SET GENERATOR '.$sequence_name.' TO '.($start-1)))) {
if (PEAR::isError($err = $db->dropSequence($seq_name))) {
return $db->raiseError($result, null, null,
'Could not setup sequence start value and then it was not possible to drop it', __FUNCTION__);
}
}
return $result;
}
// }}}
// {{{ dropSequence()
/**
* drop existing sequence
*
* @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 = $db->getSequenceName($seq_name);
$sequence_name = $db->quote($sequence_name, 'text');
$query = "DELETE FROM RDB\$GENERATORS WHERE UPPER(RDB\$GENERATOR_NAME)=$sequence_name";
return $db->exec($query);
}
// }}}
// {{{ listSequences()
/**
* list all sequences in the current database
*
* @return mixed array of sequence names on success, a MDB2 error on failure
* @access public
*/
function listSequences()
{
$db =& $this->getDBInstance();
if (PEAR::isError($db)) {
return $db;
}
$query = 'SELECT RDB$GENERATOR_NAME FROM RDB$GENERATORS WHERE RDB$SYSTEM_FLAG IS NULL';
$table_names = $db->queryCol($query);
if (PEAR::isError($table_names)) {
return $table_names;
}
$result = array();
foreach ($table_names as $table_name) {
$result[] = $this->_fixSequenceName($table_name);
}
if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
$result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
}
return $result;
}
}
?>
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