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<?php
// +----------------------------------------------------------------------+
// | PHP Version 4 |
// +----------------------------------------------------------------------+
// | Copyright (c) 1998-2004 Manuel Lemos, Tomas V.V.Cox, |
// | Stig. S. Bakken, Lukas Smith |
// | All rights reserved. |
// +----------------------------------------------------------------------+
// | MDB 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 1.2.4.3 2004/02/15 16:23:09 lsmith Exp $
if(!defined('MDB_MANAGER_IBASE_INCLUDED'))
{
define('MDB_MANAGER_IBASE_INCLUDED', 1);
require_once('MDB/Modules/Manager/Common.php');
/**
* MDB FireBird/InterBase driver for the management modules
*
* @package MDB
* @category Database
* @access private
* @author Lorenzo Alberton <l.alberton@quipo.it>
*/
class MDB_Manager_ibase extends MDB_Manager_common
{
// {{{ createDatabase()
/**
* create a new database
*
* @param object $db database object that is extended by this class
* @param string $name name of the database that should be created
* @return mixed MDB_OK on success, a MDB error on failure
* @access public
**/
function createDatabase(&$db, $name)
{
return ($db->raiseError(MDB_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'));
}
// }}}
// {{{ dropDatabase()
/**
* drop an existing database
*
* @param object $db database object that is extended by this class
* @param string $name name of the database that should be dropped
* @return mixed MDB_OK on success, a MDB error on failure
* @access public
**/
function dropDatabase(&$db, $name)
{
return ($db->raiseError(MDB_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'));
}
// }}}
// {{{ checkSupportedChanges()
/**
* check if planned changes are supported
*
* @param object $db database object that is extended by this class
* @param string $name name of the database that should be dropped
* @return mixed MDB_OK on success, a MDB error on failure
* @access public
**/
function checkSupportedChanges(&$db, &$changes)
{
for($change=0, reset($changes);
$change<count($changes);
next($changes), $change++)
{
switch(key($changes)) {
case "ChangedNotNull":
case "notnull":
return($this->raiseError(MDB_ERROR_MANAGER, NULL, NULL,
'Check supported changes: it is not supported changes to field not null constraint'));
case "ChangedDefault":
case "default":
return($this->raiseError(MDB_ERROR_MANAGER, NULL, NULL,
'Check supported changes: it is not supported changes to field default value'));
case "length":
return($this->raiseError(MDB_ERROR_MANAGER, NULL, NULL,
'Check supported changes: it is not supported changes to field default length'));
case "unsigned":
case "type":
case "Declaration":
case "Definition":
break;
default:
return($this->raiseError(MDB_ERROR_MANAGER, NULL, NULL,
'Check supported changes: it is not supported change of type' . key($changes)));
}
}
return(MDB_OK);
}
// }}}
// {{{ alterTable()
/**
* alter an existing table
*
* @param object $db database object that is extended by this class
* @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.
*
* AddedFields
*
* 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.
*
* Additionally, there should be an 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.
*
* RemovedFields
*
* 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.
*
* RenamedFields
*
* 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.
*
* ChangedFields
*
* 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 ChangedFields 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.
*
* If the default property is meant to be added, removed or changed, there
* should also be an entry with index ChangedDefault assigned to 1. Similarly,
* if the notnull constraint is to be added or removed, there should also be
* an entry with index ChangedNotNull assigned to 1.
*
* Additionally, there should be an entry named Declaration that is expected
* to contain the portion of the field changed declaration already in DBMS
* specific SQL code as it is used in the CREATE TABLE statement.
* Example
* array(
* 'name' => 'userlist',
* 'AddedFields' => array(
* 'quota' => array(
* 'type' => 'integer',
* 'unsigned' => 1
* 'Declaration' => 'quota INT'
* )
* ),
* 'RemovedFields' => array(
* 'file_limit' => array(),
* 'time_limit' => array()
* ),
* 'ChangedFields' => array(
* 'gender' => array(
* 'default' => 'M',
* 'ChangeDefault' => 1,
* 'Declaration' => "gender CHAR(1) DEFAULT 'M'"
* )
* ),
* 'RenamedFields' => array(
* 'sex' => array(
* 'name' => 'gender',
* 'Declaration' => "gender CHAR(1) DEFAULT 'M'"
* )
* )
* )
* @param boolean $check indicates whether the function should just check if the DBMS driver
* can perform the requested table alterations if the value is TRUE or
* actually perform them otherwise.
* @return mixed MDB_OK on success, a MDB error on failure
* @access public
**/
function alterTable(&$db, $name, &$changes, $check)
{
if($check) {
for($change=0, reset($changes);
$change<count($changes);
next($changes), $change++)
{
switch(key($changes)) {
case "AddedFields":
case "RemovedFields":
case "RenamedFields":
break;
case "ChangedFields":
$fields = $changes['ChangedFields'];
for($field=0, reset($fields);
$field<count($fields);
next($fields), $field++)
{
if(MDB::isError($err = $this->checkSupportedChanges($fields[Key($fields)]))) {
return($err);
}
}
break;
default:
return($this->raiseError(MDB_ERROR_MANAGER, NULL, NULL,
'Alter table: change type ' . key($changes) . ' not yet supported'));
}
}
return(MDB_OK);
} else {
$query = '';
if(isset($changes['AddedFields'])) {
$fields = $changes['AddedFields'];
for($field=0, reset($fields); $field<count($fields); next($fields), $field++) {
if(strcmp($query, "")) {
$query .= ', ';
}
$query .= 'ADD ' . $fields[key($fields)]['Declaration'];
}
}
if(isset($changes['RemovedFields'])) {
$fields = $changes['RemovedFields'];
for($field=0, reset($fields); $field<count($fields); next($fields), $field++) {
if(strcmp($query, "")) {
$query .= ', ';
}
$query .= 'DROP ' . key($fields);
}
}
if(isset($changes['RenamedFields'])) {
$fields = $changes['RenamedFields'];
for($field=0, reset($fields); $field<count($fields); next($fields), $field++) {
if(strcmp($query, "")) {
$query .= ', ';
}
$query .= 'ALTER ' . key($fields) . ' TO ' . $fields[Key($fields)]['name'];
}
}
if(isset($changes['ChangedFields'])) {
$fields = $changes['ChangedFields'];
for($field=0, reset($fields); $field<count($fields); next($fields), $field++) {
$field_name = key($fields);
if(MDB::isError($err = $this->CheckSupportedChanges($fields[Key($fields)]))) {
return($err);
}
if(strcmp($query, "")) {
$query .= ', ';
}
$query .= 'ALTER '.$field_name.' TYPE '.$db->getFieldDeclaration($fields[$field_name]['Definition']);
}
}
if(MDB::isError($err = $db->query("ALTER TABLE $name $query"))) {
return $err;
}
return(MDB_OK);
}
}
// }}}
// {{{ listTableFields()
/**
* list all fields in a tables in the current database
*
* @param object $db database object that is extended by this class
* @param string $table name of table that should be used in method
* @return mixed data array on success, a MDB error on failure
* @access public
*/
function listTableFields(&$db, $table)
{
$result = $db->query("SELECT RDB$FIELD_SOURCE FROM RDB$RELATION_FIELDS WHERE RDB$RELATION_NAME='$table'");
if(MDB::isError($result)) {
return($result);
}
$columns = $db->getColumnNames($result);
if(MDB::isError($columns)) {
$db->freeResult($columns);
}
return($columns);
}
// }}}
// {{{ getTableFieldDefinition()
// }}}
// {{{ listViews()
/**
* list the views in the database
*
* @param object $db database object that is extended by this class
* @return mixed MDB_OK on success, a MDB error on failure
* @access public
**/
function listViews(&$db)
{
//return($db->queryCol('SELECT RDB$VIEW_NAME'));
return($db->raiseError(MDB_ERROR_UNSUPPORTED, NULL, NULL, 'not supported feature'));
}
// }}}
// {{{ createIndex()
/**
* get the stucture of a field into an array
*
* @param object $dbs database object that is extended by this class
* @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 $definition associative array that defines properties of the index to be created.
* Currently, only one property named FIELDS is supported. This property
* is also an associative with the names of the index fields as array
* indexes. Each entry of this array is set to another type of associative
* array that specifies properties of the index that are specific to
* each field.
*
* Currently, only the sorting property is supported. It should be used
* to define the sorting direction of the index. It may be set to either
* ascending or descending.
*
* Not all DBMS support index sorting direction configuration. The DBMS
* drivers of those that do not support it ignore this property. Use the
* function support() to determine whether the DBMS driver can manage indexes.
* Example
* array(
* 'FIELDS' => array(
* 'user_name' => array(
* 'sorting' => 'ascending'
* ),
* 'last_login' => array()
* )
* )
* @return mixed MDB_OK on success, a MDB error on failure
* @access public
*/
function createIndex(&$db, $table, $name, $definition)
{
for($query_sort='', $query_fields='', $field=0, reset($definition['FIELDS']);
$field<count($definition['FIELDS']);
$field++, next($definition['FIELDS']))
{
if($field > 0) {
$query_fields .= ',';
}
$field_name = key($definition['FIELDS']);
$query_fields .= $field_name;
if(!strcmp($query_sort, "")
&& $db->support('IndexSorting')
&& isset($definition['FIELDS'][$field_name]['sorting']))
{
switch($definition['FIELDS'][$field_name]['sorting']) {
case "ascending":
$query_sort = " ASC";
break;
case "descending":
$query_sort = " DESC";
break;
}
}
}
return($db->query('CREATE'.(isset($definition['unique']) ? ' UNIQUE' : '') . $query_sort
." INDEX $name ON $table ($query_fields)"));
}
// }}}
// {{{ 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 $start start value of the sequence; default is 1
* @return mixed MDB_OK on success, a MDB error on failure
* @access public
**/
function createSequence(&$db, $seq_name, $start)
{
$seqname = $db->getSequenceName($seq_name);
if (MDB::isError($result = $db->query("CREATE GENERATOR $seqname"))) {
return($result);
}
if (MDB::isError($result = $db->query("SET GENERATOR $seqname TO ".($start-1)))) {
if (MDB::isError($err = $db->dropSequence($seq_name))) {
return($this->raiseError(MDB_ERROR_MANAGER, NULL, NULL,
'Could not setup sequence start value and then it was not possible to drop it: '
.$err->getMessage().' - ' .$err->getUserInfo()));
}
}
return($result);
}
// }}}
// {{{ dropSequence()
/**
* drop existing sequence
*
* @param object $db database object that is extended by this class
* @param string $seq_name name of the sequence to be dropped
* @return mixed MDB_OK on success, a MDB error on failure
* @access public
**/
function dropSequence(&$db, $seq_name)
{
$seqname = $db->getSequenceName($seq_name);
return($db->query("DELETE FROM RDB\$GENERATORS WHERE RDB\$GENERATOR_NAME='".strtoupper($seqname)."'"));
}
// }}}
// {{{ listSequences()
/**
* list all sequences in the current database
*
* @param object $db database object that is extended by this class
* @return mixed data array on success, a MDB error on failure
* @access public
**/
function listSequences(&$db)
{
return($db->queryCol("SELECT RDB\$GENERATOR_NAME FROM RDB\$GENERATORS"));
}
}
};
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