<?php
// +----------------------------------------------------------------------+
// | PHP versions 4 and 5 |
// +----------------------------------------------------------------------+
// | Copyright (c) 1998-2004 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> |
// +----------------------------------------------------------------------+
//
// $Id$
//
/**
* @package MDB2
* @category Database
* @author Lukas Smith <smith@pooteeweet.org>
*/
/**
* Base class for the management modules that is extended by each MDB2 driver
*
* @package MDB2
* @category Database
* @author Lukas Smith <smith@pooteeweet.org>
*/
class MDB2_Driver_Manager_Common extends MDB2_Module_Common
{
// }}}
// {{{ getFieldDeclarationList()
/**
* get declaration of a number of field in bulk
*
* @param string $fields a multidimensional associative array.
* The first dimension determines the field name, while the second
* dimension is keyed with the name of the properties
* of the field being declared as array indexes. Currently, the types
* of supported field properties are as follows:
*
* default
* Boolean value to be used as default for this field.
*
* notnull
* Boolean flag that indicates whether this field is constrained
* to not be set to null.
*
* @return mixed string on success, a MDB2 error on failure
* @access public
*/
function getFieldDeclarationList($fields)
{
$db =& $this->getDBInstance();
if (PEAR::isError($db)) {
return $db;
}
if (is_array($fields)) {
foreach ($fields as $field_name => $field) {
$query = $db->getDeclaration($field['type'], $field_name, $field);
if (PEAR::isError($query)) {
return $query;
}
$query_fields[] = $query;
}
return implode(',', $query_fields);
}
return $db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
'getFieldDeclarationList: the definition of the table "'.$table_name.'" does not contain any fields');
}
// }}}
// {{{ _isSequenceName()
/**
* list all tables in the current database
*
* @param string $sqn string that containts name of a potential sequence
* @return mixed name of the sequence if $sqn is a name of a sequence, else false
* @access protected
*/
function _isSequenceName($sqn)
{
$db =& $this->getDBInstance();
if (PEAR::isError($db)) {
return $db;
}
$seq_pattern = '/^'.preg_replace('/%s/', '([a-z0-9_]+)', $db->options['seqname_format']).'$/i';
$seq_name = preg_replace($seq_pattern, '\\1', $sqn);
if ($seq_name && $sqn == $db->getSequenceName($seq_name)) {
return $seq_name;
}
return false;
}
// }}}
// {{{ createDatabase()
/**
* create a new database
*
* @param string $name name of the database that should be created
* @return mixed MDB2_OK on success, a MDB2 error on failure
* @access public
*/
function createDatabase($database)
{
$db =& $this->getDBInstance();
if (PEAR::isError($db)) {
return $db;
}
return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
'createDatabase: database creation is not supported');
}
// }}}
// {{{ dropDatabase()
/**
* drop an existing database
*
* @param string $name name of the database that should be dropped
* @return mixed MDB2_OK on success, a MDB2 error on failure
* @access public
*/
function dropDatabase($database)
{
$db =& $this->getDBInstance();
if (PEAR::isError($db)) {
return $db;
}
return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
'dropDatabase: database dropping is not supported');
}
// }}}
// {{{ createTable()
/**
* create a new table
*
* @param string $name Name of the database that should be created
* @param array $fields Associative array that contains the definition of each field of the new table
* The indexes of the array entries are the names of the fields of the table an
* the array entry values are associative arrays like those that are meant to be
* passed with the field definitions to get[Type]Declaration() functions.
*
* Example
* array(
*
* 'id' => array(
* 'type' => 'integer',
* 'unsigned' => 1
* 'notnull' => 1
* 'default' => 0
* ),
* 'name' => array(
* 'type' => 'text',
* 'length' => 12
* ),
* 'password' => array(
* 'type' => 'text',
* 'length' => 12
* )
* );
* @return mixed MDB2_OK on success, a MDB2 error on failure
* @access public
*/
function createTable($name, $fields)
{
$db =& $this->getDBInstance();
if (PEAR::isError($db)) {
return $db;
}
if (!$name) {
return $db->raiseError(MDB2_ERROR_CANNOT_CREATE, null, null,
'createTable: no valid table name specified');
}
if (empty($fields)) {
return $db->raiseError(MDB2_ERROR_CANNOT_CREATE, null, null,
'createTable: no fields specified for table "'.$name.'"');
}
$query_fields = $this->getFieldDeclarationList($fields);
if (PEAR::isError($query_fields)) {
return $db->raiseError(MDB2_ERROR_CANNOT_CREATE, null, null,
'createTable: unkown error');
}
$query = "CREATE TABLE $name ($query_fields)";
return $db->query($query);
}
// }}}
// {{{ 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;
}
return $db->query("DROP TABLE $name");
}
// }}}
// {{{ 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 Metabase 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 Metabase parser.
*
* Example
* array(
* 'name' => 'userlist',
* 'add' => array(
* 'quota' => array(
* 'type' => 'integer',
* 'unsigned' => 1
* )
* ),
* 'remove' => array(
* 'file_limit' => array(),
* 'time_limit' => array()
* ),
* 'change' => array(
* 'gender' => array(
* 'default' => 'M',
* )
* ),
* 'rename' => array(
* 'sex' => array(
* 'name' => 'gender',
* )
* )
* )
* @param boolean $check indicates whether the function should just check if the DBMS driver
* can perform the requested table alterations if the value is true or
* actually perform them otherwise.
* @return mixed MDB2_OK on success, a MDB2 error on failure
* @access public
*/
function alterTable($name, $changes, $check)
{
$db =& $this->getDBInstance();
if (PEAR::isError($db)) {
return $db;
}
return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
'alterTable: database table alterations are not supported');
}
// }}}
// {{{ listDatabases()
/**
* list all databases
*
* @return mixed data array on success, a MDB2 error on failure
* @access public
*/
function listDatabases()
{
$db =& $this->getDBInstance();
if (PEAR::isError($db)) {
return $db;
}
return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
'listDatabases: list databases is not supported');
}
// }}}
// {{{ listUsers()
/**
* list all users
*
* @return mixed data array on success, a MDB2 error on failure
* @access public
*/
function listUsers()
{
$db =& $this->getDBInstance();
if (PEAR::isError($db)) {
return $db;
}
return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
'listUsers: list user is not supported');
}
// }}}
// {{{ listViews()
/**
* list all views in the current database
*
* @return mixed data array on success, a MDB2 error on failure
* @access public
*/
function listViews()
{
$db =& $this->getDBInstance();
if (PEAR::isError($db)) {
return $db;
}
return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
'listViews: list view is not supported');
}
// }}}
// {{{ listFunctions()
/**
* list all functions in the current database
*
* @return mixed data array on success, a MDB2 error on failure
* @access public
*/
function listFunctions()
{
$db =& $this->getDBInstance();
if (PEAR::isError($db)) {
return $db;
}
return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
'listFunctions: list function is not supported');
}
// }}}
// {{{ listTables()
/**
* list all tables in the current database
*
* @return mixed data array on success, a MDB2 error on failure
* @access public
*/
function listTables()
{
$db =& $this->getDBInstance();
if (PEAR::isError($db)) {
return $db;
}
return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
'listTables: list tables is not supported');
}
// }}}
// {{{ listTableFields()
/**
* list all fields in a tables in the current database
*
* @param string $table name of table that should be used in method
* @return mixed data array on success, a MDB2 error on failure
* @access public
*/
function listTableFields($table)
{
$db =& $this->getDBInstance();
if (PEAR::isError($db)) {
return $db;
}
return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
'listTableFields: list table fields is not supported');
}
// }}}
// {{{ 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 $definition associative array that defines properties of the index to be created.
* Currently, only one property named FIELDS is supported. This property
* is also an associative with the names of the index fields as array
* indexes. Each entry of this array is set to another type of associative
* array that specifies properties of the index that are specific to
* each field.
*
* Currently, only the sorting property is supported. It should be used
* to define the sorting direction of the index. It may be set to either
* ascending or descending.
*
* Not all DBMS support index sorting direction configuration. The DBMS
* drivers of those that do not support it ignore this property. Use the
* function supports() to determine whether the DBMS driver can manage indexes.
*
* Example
* array(
* 'fields' => array(
* 'user_name' => array(
* 'sorting' => 'ascending'
* ),
* 'last_login' => array()
* )
* )
* @return mixed MDB2_OK on success, a MDB2 error on failure
* @access public
*/
function createIndex($table, $name, $definition)
{
$db =& $this->getDBInstance();
if (PEAR::isError($db)) {
return $db;
}
return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
'createIndex: Creating Indexes is not supported');
}
// }}}
// {{{ dropIndex()
/**
* drop existing index
*
* @param string $table name of table that should be used in method
* @param string $name name of the index to be dropped
* @return mixed MDB2_OK on success, a MDB2 error on failure
* @access public
*/
function dropIndex($table, $name)
{
$db =& $this->getDBInstance();
if (PEAR::isError($db)) {
return $db;
}
return $db->query("DROP INDEX $name");
}
// }}}
// {{{ listTableIndexes()
/**
* list all indexes in a table
*
* @param string $table name of table that should be used in method
* @return mixed data array on success, a MDB2 error on failure
* @access public
*/
function listTableIndexes($table)
{
$db =& $this->getDBInstance();
if (PEAR::isError($db)) {
return $db;
}
return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
'listTableIndexes: List Indexes is not supported');
}
// }}}
// {{{ 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;
}
return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
'createSequence: sequence creation not supported');
}
// }}}
// {{{ dropSequence()
/**
* drop existing sequence
*
* @param string $seq_name name of the sequence to be dropped
* @return mixed MDB2_OK on success, a MDB2 error on failure
* @access public
*/
function dropSequence($name)
{
$db =& $this->getDBInstance();
if (PEAR::isError($db)) {
return $db;
}
return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
'dropSequence: sequence dropping not supported');
}
// }}}
// {{{ listSequences()
/**
* list all sequences in the current database
*
* @return mixed data array on success, a MDB2 error on failure
* @access public
*/
function listSequences()
{
$db =& $this->getDBInstance();
if (PEAR::isError($db)) {
return $db;
}
return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
'listSequences: List sequences is not supported');
}
}
?>