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511 lines
19 KiB
PHTML
511 lines
19 KiB
PHTML
17 years ago
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<?php
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// +----------------------------------------------------------------------+
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// | PHP versions 4 and 5 |
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// +----------------------------------------------------------------------+
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// | Copyright (c) 1998-2007 Manuel Lemos, Tomas V.V.Cox, |
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// | Stig. S. Bakken, Lukas Smith |
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// | All rights reserved. |
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// +----------------------------------------------------------------------+
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// | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB |
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// | API as well as database abstraction for PHP applications. |
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// | This LICENSE is in the BSD license style. |
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// | |
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// | Redistribution and use in source and binary forms, with or without |
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// | modification, are permitted provided that the following conditions |
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// | are met: |
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// | |
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// | Redistributions of source code must retain the above copyright |
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// | notice, this list of conditions and the following disclaimer. |
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// | |
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// | Redistributions in binary form must reproduce the above copyright |
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// | notice, this list of conditions and the following disclaimer in the |
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// | documentation and/or other materials provided with the distribution. |
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// | |
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// | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken, |
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// | Lukas Smith nor the names of his contributors may be used to endorse |
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// | or promote products derived from this software without specific prior|
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// | written permission. |
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// | |
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// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
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// | FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
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// | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
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// | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
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// | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS|
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// | OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
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// | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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// | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY|
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// | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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// | POSSIBILITY OF SUCH DAMAGE. |
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// +----------------------------------------------------------------------+
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// | Author: Lukas Smith <smith@pooteeweet.org> |
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// +----------------------------------------------------------------------+
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//
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// $Id: Common.php,v 1.41 2007/09/09 13:47:36 quipo Exp $
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//
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/**
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* @package MDB2
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* @category Database
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*/
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/**
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* These are constants for the tableInfo-function
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* they are bitwised or'ed. so if there are more constants to be defined
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* in the future, adjust MDB2_TABLEINFO_FULL accordingly
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*/
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define('MDB2_TABLEINFO_ORDER', 1);
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define('MDB2_TABLEINFO_ORDERTABLE', 2);
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define('MDB2_TABLEINFO_FULL', 3);
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/**
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* Base class for the schema reverse engineering module that is extended by each MDB2 driver
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*
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* To load this module in the MDB2 object:
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* $mdb->loadModule('Reverse');
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*
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* @package MDB2
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* @category Database
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* @author Lukas Smith <smith@pooteeweet.org>
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*/
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class MDB2_Driver_Reverse_Common extends MDB2_Module_Common
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{
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// {{{ splitTableSchema()
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/**
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* Split the "[owner|schema].table" notation into an array
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* @access private
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*/
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function splitTableSchema($table)
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{
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$ret = array();
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if (strpos($table, '.') !== false) {
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return explode('.', $table);
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}
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return array(null, $table);
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}
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// }}}
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// {{{ getTableFieldDefinition()
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/**
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* Get the structure of a field into an array
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*
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* @param string $table name of table that should be used in method
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* @param string $field name of field that should be used in method
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* @return mixed data array on success, a MDB2 error on failure.
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* The returned array contains an array for each field definition,
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* with all or some of these indices, depending on the field data type:
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* [notnull] [nativetype] [length] [fixed] [default] [type] [mdb2type]
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* @access public
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*/
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function getTableFieldDefinition($table, $field)
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{
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$db =& $this->getDBInstance();
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if (PEAR::isError($db)) {
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return $db;
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}
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return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
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'method not implemented', __FUNCTION__);
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}
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// }}}
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// {{{ getTableIndexDefinition()
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/**
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* Get the structure of an index into an array
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*
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* @param string $table name of table that should be used in method
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* @param string $index name of index that should be used in method
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* @return mixed data array on success, a MDB2 error on failure
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* The returned array has this structure:
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* </pre>
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* array (
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* [fields] => array (
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* [field1name] => array() // one entry per each field covered
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* [field2name] => array() // by the index
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* [field3name] => array(
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* [sorting] => ascending
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* )
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* )
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* );
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* </pre>
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* @access public
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*/
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function getTableIndexDefinition($table, $index)
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{
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$db =& $this->getDBInstance();
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if (PEAR::isError($db)) {
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return $db;
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}
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return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
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'method not implemented', __FUNCTION__);
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}
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// }}}
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// {{{ getTableConstraintDefinition()
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/**
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* Get the structure of an constraints into an array
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*
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* @param string $table name of table that should be used in method
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* @param string $index name of index that should be used in method
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* @return mixed data array on success, a MDB2 error on failure
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* The returned array has this structure:
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* <pre>
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* array (
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* [primary] => 0
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* [unique] => 0
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* [foreign] => 1
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* [check] => 0
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* [fields] => array (
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* [field1name] => array() // one entry per each field covered
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* [field2name] => array() // by the index
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* [field3name] => array(
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* [sorting] => ascending
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* [position] => 3
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* )
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* )
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* [references] => array(
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* [table] => name
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* [fields] => array(
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* [field1name] => array( //one entry per each referenced field
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* [position] => 1
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* )
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* )
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* )
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* [deferrable] => 0
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* [initiallydeferred] => 0
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* [onupdate] => CASCADE|RESTRICT|SET NULL|SET DEFAULT|NO ACTION
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* [ondelete] => CASCADE|RESTRICT|SET NULL|SET DEFAULT|NO ACTION
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* [match] => SIMPLE|PARTIAL|FULL
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* );
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* </pre>
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* @access public
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*/
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function getTableConstraintDefinition($table, $index)
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{
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$db =& $this->getDBInstance();
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if (PEAR::isError($db)) {
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return $db;
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}
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return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
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'method not implemented', __FUNCTION__);
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}
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// }}}
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// {{{ getSequenceDefinition()
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/**
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* Get the structure of a sequence into an array
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*
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* @param string $sequence name of sequence that should be used in method
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* @return mixed data array on success, a MDB2 error on failure
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* The returned array has this structure:
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* <pre>
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* array (
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* [start] => n
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* );
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* </pre>
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* @access public
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*/
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function getSequenceDefinition($sequence)
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{
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$db =& $this->getDBInstance();
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if (PEAR::isError($db)) {
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return $db;
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}
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$start = $db->currId($sequence);
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if (PEAR::isError($start)) {
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return $start;
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}
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if ($db->supports('current_id')) {
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$start++;
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} else {
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$db->warnings[] = 'database does not support getting current
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sequence value, the sequence value was incremented';
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}
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$definition = array();
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if ($start != 1) {
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$definition = array('start' => $start);
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}
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return $definition;
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}
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// }}}
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// {{{ getTriggerDefinition()
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/**
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* Get the structure of a trigger into an array
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*
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* EXPERIMENTAL
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*
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* WARNING: this function is experimental and may change the returned value
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* at any time until labelled as non-experimental
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*
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* @param string $trigger name of trigger that should be used in method
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* @return mixed data array on success, a MDB2 error on failure
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* The returned array has this structure:
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* <pre>
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* array (
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* [trigger_name] => 'trigger name',
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* [table_name] => 'table name',
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* [trigger_body] => 'trigger body definition',
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* [trigger_type] => 'BEFORE' | 'AFTER',
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* [trigger_event] => 'INSERT' | 'UPDATE' | 'DELETE'
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* //or comma separated list of multiple events, when supported
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* [trigger_enabled] => true|false
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* [trigger_comment] => 'trigger comment',
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* );
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* </pre>
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* The oci8 driver also returns a [when_clause] index.
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* @access public
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*/
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function getTriggerDefinition($trigger)
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{
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$db =& $this->getDBInstance();
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if (PEAR::isError($db)) {
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return $db;
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}
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return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
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'method not implemented', __FUNCTION__);
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}
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// }}}
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// {{{ tableInfo()
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/**
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* Returns information about a table or a result set
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*
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* The format of the resulting array depends on which <var>$mode</var>
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* you select. The sample output below is based on this query:
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* <pre>
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* SELECT tblFoo.fldID, tblFoo.fldPhone, tblBar.fldId
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* FROM tblFoo
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* JOIN tblBar ON tblFoo.fldId = tblBar.fldId
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* </pre>
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*
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* <ul>
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* <li>
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*
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* <kbd>null</kbd> (default)
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* <pre>
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* [0] => Array (
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* [table] => tblFoo
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* [name] => fldId
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* [type] => int
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* [len] => 11
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* [flags] => primary_key not_null
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* )
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* [1] => Array (
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* [table] => tblFoo
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* [name] => fldPhone
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* [type] => string
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* [len] => 20
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* [flags] =>
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* )
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* [2] => Array (
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* [table] => tblBar
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* [name] => fldId
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* [type] => int
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* [len] => 11
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* [flags] => primary_key not_null
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* )
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* </pre>
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*
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* </li><li>
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*
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* <kbd>MDB2_TABLEINFO_ORDER</kbd>
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*
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* <p>In addition to the information found in the default output,
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* a notation of the number of columns is provided by the
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* <samp>num_fields</samp> element while the <samp>order</samp>
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* element provides an array with the column names as the keys and
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* their location index number (corresponding to the keys in the
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* the default output) as the values.</p>
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*
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* <p>If a result set has identical field names, the last one is
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* used.</p>
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*
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* <pre>
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* [num_fields] => 3
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* [order] => Array (
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* [fldId] => 2
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* [fldTrans] => 1
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* )
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* </pre>
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*
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* </li><li>
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||
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*
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* <kbd>MDB2_TABLEINFO_ORDERTABLE</kbd>
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*
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* <p>Similar to <kbd>MDB2_TABLEINFO_ORDER</kbd> but adds more
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* dimensions to the array in which the table names are keys and
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* the field names are sub-keys. This is helpful for queries that
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* join tables which have identical field names.</p>
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*
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* <pre>
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* [num_fields] => 3
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* [ordertable] => Array (
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* [tblFoo] => Array (
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* [fldId] => 0
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* [fldPhone] => 1
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* )
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* [tblBar] => Array (
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* [fldId] => 2
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* )
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* )
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* </pre>
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*
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* </li>
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* </ul>
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*
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* The <samp>flags</samp> element contains a space separated list
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* of extra information about the field. This data is inconsistent
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||
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* between DBMS's due to the way each DBMS works.
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||
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* + <samp>primary_key</samp>
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||
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* + <samp>unique_key</samp>
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||
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* + <samp>multiple_key</samp>
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||
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* + <samp>not_null</samp>
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||
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*
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||
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* Most DBMS's only provide the <samp>table</samp> and <samp>flags</samp>
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||
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* elements if <var>$result</var> is a table name. The following DBMS's
|
||
|
|
* provide full information from queries:
|
||
|
|
* + fbsql
|
||
|
|
* + mysql
|
||
|
|
*
|
||
|
|
* If the 'portability' option has <samp>MDB2_PORTABILITY_FIX_CASE</samp>
|
||
|
|
* turned on, the names of tables and fields will be lower or upper cased.
|
||
|
|
*
|
||
|
|
* @param object|string $result MDB2_result object from a query or a
|
||
|
|
* string containing the name of a table.
|
||
|
|
* While this also accepts a query result
|
||
|
|
* resource identifier, this behavior is
|
||
|
|
* deprecated.
|
||
|
|
* @param int $mode either unused or one of the tableInfo modes:
|
||
|
|
* <kbd>MDB2_TABLEINFO_ORDERTABLE</kbd>,
|
||
|
|
* <kbd>MDB2_TABLEINFO_ORDER</kbd> or
|
||
|
|
* <kbd>MDB2_TABLEINFO_FULL</kbd> (which does both).
|
||
|
|
* These are bitwise, so the first two can be
|
||
|
|
* combined using <kbd>|</kbd>.
|
||
|
|
*
|
||
|
|
* @return array an associative array with the information requested.
|
||
|
|
* A MDB2_Error object on failure.
|
||
|
|
*
|
||
|
|
* @see MDB2_Driver_Common::setOption()
|
||
|
|
*/
|
||
|
|
function tableInfo($result, $mode = null)
|
||
|
|
{
|
||
|
|
$db =& $this->getDBInstance();
|
||
|
|
if (PEAR::isError($db)) {
|
||
|
|
return $db;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!is_string($result)) {
|
||
|
|
return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
|
||
|
|
'method not implemented', __FUNCTION__);
|
||
|
|
}
|
||
|
|
|
||
|
|
$db->loadModule('Manager', null, true);
|
||
|
|
$fields = $db->manager->listTableFields($result);
|
||
|
|
if (PEAR::isError($fields)) {
|
||
|
|
return $fields;
|
||
|
|
}
|
||
|
|
|
||
|
|
$flags = array();
|
||
|
|
|
||
|
|
$idxname_format = $db->getOption('idxname_format');
|
||
|
|
$db->setOption('idxname_format', '%s');
|
||
|
|
|
||
|
|
$indexes = $db->manager->listTableIndexes($result);
|
||
|
|
if (PEAR::isError($indexes)) {
|
||
|
|
$db->setOption('idxname_format', $idxname_format);
|
||
|
|
return $indexes;
|
||
|
|
}
|
||
|
|
|
||
|
|
foreach ($indexes as $index) {
|
||
|
|
$definition = $this->getTableIndexDefinition($result, $index);
|
||
|
|
if (PEAR::isError($definition)) {
|
||
|
|
$db->setOption('idxname_format', $idxname_format);
|
||
|
|
return $definition;
|
||
|
|
}
|
||
|
|
if (count($definition['fields']) > 1) {
|
||
|
|
foreach ($definition['fields'] as $field => $sort) {
|
||
|
|
$flags[$field] = 'multiple_key';
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
$constraints = $db->manager->listTableConstraints($result);
|
||
|
|
if (PEAR::isError($constraints)) {
|
||
|
|
return $constraints;
|
||
|
|
}
|
||
|
|
|
||
|
|
foreach ($constraints as $constraint) {
|
||
|
|
$definition = $this->getTableConstraintDefinition($result, $constraint);
|
||
|
|
if (PEAR::isError($definition)) {
|
||
|
|
$db->setOption('idxname_format', $idxname_format);
|
||
|
|
return $definition;
|
||
|
|
}
|
||
|
|
$flag = !empty($definition['primary'])
|
||
|
|
? 'primary_key' : (!empty($definition['unique'])
|
||
|
|
? 'unique_key' : false);
|
||
|
|
if ($flag) {
|
||
|
|
foreach ($definition['fields'] as $field => $sort) {
|
||
|
|
if (empty($flags[$field]) || $flags[$field] != 'primary_key') {
|
||
|
|
$flags[$field] = $flag;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if ($mode) {
|
||
|
|
$res['num_fields'] = count($fields);
|
||
|
|
}
|
||
|
|
|
||
|
|
foreach ($fields as $i => $field) {
|
||
|
|
$definition = $this->getTableFieldDefinition($result, $field);
|
||
|
|
if (PEAR::isError($definition)) {
|
||
|
|
$db->setOption('idxname_format', $idxname_format);
|
||
|
|
return $definition;
|
||
|
|
}
|
||
|
|
$res[$i] = $definition[0];
|
||
|
|
$res[$i]['name'] = $field;
|
||
|
|
$res[$i]['table'] = $result;
|
||
|
|
$res[$i]['type'] = preg_replace('/^([a-z]+).*$/i', '\\1', trim($definition[0]['nativetype']));
|
||
|
|
// 'primary_key', 'unique_key', 'multiple_key'
|
||
|
|
$res[$i]['flags'] = empty($flags[$field]) ? '' : $flags[$field];
|
||
|
|
// not_null', 'unsigned', 'auto_increment', 'default_[rawencodedvalue]'
|
||
|
|
if (!empty($res[$i]['notnull'])) {
|
||
|
|
$res[$i]['flags'].= ' not_null';
|
||
|
|
}
|
||
|
|
if (!empty($res[$i]['unsigned'])) {
|
||
|
|
$res[$i]['flags'].= ' unsigned';
|
||
|
|
}
|
||
|
|
if (!empty($res[$i]['auto_increment'])) {
|
||
|
|
$res[$i]['flags'].= ' autoincrement';
|
||
|
|
}
|
||
|
|
if (!empty($res[$i]['default'])) {
|
||
|
|
$res[$i]['flags'].= ' default_'.rawurlencode($res[$i]['default']);
|
||
|
|
}
|
||
|
|
|
||
|
|
if ($mode & MDB2_TABLEINFO_ORDER) {
|
||
|
|
$res['order'][$res[$i]['name']] = $i;
|
||
|
|
}
|
||
|
|
if ($mode & MDB2_TABLEINFO_ORDERTABLE) {
|
||
|
|
$res['ordertable'][$res[$i]['table']][$res[$i]['name']] = $i;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
$db->setOption('idxname_format', $idxname_format);
|
||
|
|
return $res;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
?>
|