forked from Wavyzz/dolibarr
330 lines
13 KiB
PHP
330 lines
13 KiB
PHP
<?php
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// +----------------------------------------------------------------------+
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// | PHP versions 4 and 5 |
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// +----------------------------------------------------------------------+
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// | Copyright (c) 1998-2006 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: Paul Cooper <pgc@ucecom.com> |
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// +----------------------------------------------------------------------+
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//
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// $Id$
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//require_once 'MDB2/Driver/Reverse/Common.php';
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require_once PEAR_PATH."/MDB2/Driver/Reverse/Common.php";
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/**
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* MDB2 PostGreSQL driver for the schema reverse engineering module
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*
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* @package MDB2
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* @category Database
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* @author Paul Cooper <pgc@ucecom.com>
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*/
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class MDB2_Driver_Reverse_pgsql extends MDB2_Driver_Reverse_Common
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{
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// {{{ getTableFieldDefinition()
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/**
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* Get the stucture 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 $field_name name of field that should be used in method
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* @return mixed data array on success, a MDB2 error on failure
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* @access public
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*/
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function getTableFieldDefinition($table, $field_name)
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{
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$db =& $this->getDBInstance();
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if (PEAR::isError($db)) {
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return $db;
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}
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$result = $db->loadModule('Datatype', null, true);
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if (PEAR::isError($result)) {
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return $result;
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}
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$query = "SELECT
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a.attname AS name, t.typname AS type, a.attlen AS length, a.attnotnull,
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a.atttypmod, a.atthasdef,
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(SELECT substring(pg_get_expr(d.adbin, d.adrelid) for 128)
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FROM pg_attrdef d
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WHERE d.adrelid = a.attrelid AND d.adnum = a.attnum AND a.atthasdef) as default
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FROM pg_attribute a, pg_class c, pg_type t
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WHERE c.relname = ".$db->quote($table, 'text')."
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AND a.atttypid = t.oid
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AND c.oid = a.attrelid
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AND NOT a.attisdropped
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AND a.attnum > 0
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AND a.attname = ".$db->quote($field_name, 'text')."
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ORDER BY a.attnum";
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$column = $db->queryRow($query, null, MDB2_FETCHMODE_ASSOC);
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if (PEAR::isError($column)) {
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return $column;
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}
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if (empty($column)) {
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return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
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'it was not specified an existing table column', __FUNCTION__);
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}
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$column = array_change_key_case($column, CASE_LOWER);
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list($types, $length, $unsigned, $fixed) = $db->datatype->mapNativeDatatype($column);
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$notnull = false;
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if (!empty($column['attnotnull']) && $column['attnotnull'] == 't') {
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$notnull = true;
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}
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$default = null;
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if ($column['atthasdef'] === 't'
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&& !preg_match("/nextval\('([^']+)'/", $column['default'])
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) {
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$default = $column['default'];#substr($column['adsrc'], 1, -1);
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if (is_null($default) && $notnull) {
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$default = '';
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}
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}
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$autoincrement = false;
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if (preg_match("/nextval\('([^']+)'/", $column['default'], $nextvals)) {
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$autoincrement = true;
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}
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$definition[0] = array('notnull' => $notnull, 'nativetype' => $column['type']);
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if ($length > 0) {
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$definition[0]['length'] = $length;
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}
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if (!is_null($unsigned)) {
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$definition[0]['unsigned'] = $unsigned;
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}
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if (!is_null($fixed)) {
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$definition[0]['fixed'] = $fixed;
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}
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if ($default !== false) {
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$definition[0]['default'] = $default;
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}
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if ($autoincrement !== false) {
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$definition[0]['autoincrement'] = $autoincrement;
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}
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foreach ($types as $key => $type) {
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$definition[$key] = $definition[0];
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if ($type == 'clob' || $type == 'blob') {
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unset($definition[$key]['default']);
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}
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$definition[$key]['type'] = $type;
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$definition[$key]['mdb2type'] = $type;
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}
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return $definition;
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}
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// }}}
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// {{{ getTableIndexDefinition()
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/**
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* Get the stucture 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 $index_name name of index that should be used in method
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* @return mixed data array on success, a MDB2 error on failure
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* @access public
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*/
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function getTableIndexDefinition($table, $index_name)
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{
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$db =& $this->getDBInstance();
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if (PEAR::isError($db)) {
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return $db;
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}
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$index_name = $db->getIndexName($index_name);
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$query = 'SELECT relname, indkey FROM pg_index, pg_class';
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$query.= ' WHERE pg_class.oid = pg_index.indexrelid';
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$query.= " AND indisunique != 't' AND indisprimary != 't'";
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$query.= ' AND pg_class.relname = '.$db->quote($index_name, 'text');
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$row = $db->queryRow($query, null, MDB2_FETCHMODE_ASSOC);
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if (PEAR::isError($row)) {
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return $row;
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}
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if (empty($row)) {
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return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
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'it was not specified an existing table index', __FUNCTION__);
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}
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$row = array_change_key_case($row, CASE_LOWER);
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$db->loadModule('Manager', null, true);
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$columns = $db->manager->listTableFields($table);
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$definition = array();
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$index_column_numbers = explode(' ', $row['indkey']);
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foreach ($index_column_numbers as $number) {
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$definition['fields'][$columns[($number - 1)]] = array('sorting' => 'ascending');
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}
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return $definition;
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}
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// }}}
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// {{{ getTableConstraintDefinition()
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/**
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* Get the stucture of a constraint 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 $index_name name of index that should be used in method
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* @return mixed data array on success, a MDB2 error on failure
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* @access public
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*/
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function getTableConstraintDefinition($table, $index_name)
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{
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$db =& $this->getDBInstance();
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if (PEAR::isError($db)) {
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return $db;
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}
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$index_name = $db->getIndexName($index_name);
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$query = 'SELECT relname, indisunique, indisprimary, indkey FROM pg_index, pg_class';
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$query.= ' WHERE pg_class.oid = pg_index.indexrelid';
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$query.= " AND (indisunique = 't' OR indisprimary = 't')";
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$query.= ' AND pg_class.relname = '.$db->quote($index_name, 'text');
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$row = $db->queryRow($query, null, MDB2_FETCHMODE_ASSOC);
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if (PEAR::isError($row)) {
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return $row;
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}
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if (empty($row)) {
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return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
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'it was not specified an existing table constraint', __FUNCTION__);
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}
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$row = array_change_key_case($row, CASE_LOWER);
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$db->loadModule('Manager', null, true);
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$columns = $db->manager->listTableFields($table);
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$definition = array();
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if ($row['indisprimary'] == 't') {
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$definition['primary'] = true;
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} elseif ($row['indisunique'] == 't') {
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$definition['unique'] = true;
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}
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$index_column_numbers = explode(' ', $row['indkey']);
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foreach ($index_column_numbers as $number) {
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$definition['fields'][$columns[($number - 1)]] = array('sorting' => 'ascending');
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}
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return $definition;
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}
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// }}}
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// {{{ tableInfo()
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/**
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* Returns information about a table or a result set
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*
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* NOTE: only supports 'table' and 'flags' if <var>$result</var>
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* is a table name.
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*
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* @param object|string $result MDB2_result object from a query or a
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* string containing the name of a table.
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* While this also accepts a query result
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* resource identifier, this behavior is
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* deprecated.
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* @param int $mode a valid tableInfo mode
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*
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* @return array an associative array with the information requested.
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* A MDB2_Error object on failure.
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*
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* @see MDB2_Driver_Common::tableInfo()
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*/
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function tableInfo($result, $mode = null)
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{
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if (is_string($result)) {
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return parent::tableInfo($result, $mode);
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}
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$db =& $this->getDBInstance();
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if (PEAR::isError($db)) {
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return $db;
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}
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$resource = MDB2::isResultCommon($result) ? $result->getResource() : $result;
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if (!is_resource($resource)) {
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return $db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
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'Could not generate result resource', __FUNCTION__);
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}
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if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
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if ($db->options['field_case'] == CASE_LOWER) {
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$case_func = 'strtolower';
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} else {
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$case_func = 'strtoupper';
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}
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} else {
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$case_func = 'strval';
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}
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$count = @pg_num_fields($resource);
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$res = array();
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if ($mode) {
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$res['num_fields'] = $count;
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}
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$db->loadModule('Datatype', null, true);
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for ($i = 0; $i < $count; $i++) {
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$res[$i] = array(
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'table' => function_exists('pg_field_table') ? @pg_field_table($resource, $i) : '',
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'name' => $case_func(@pg_field_name($resource, $i)),
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'type' => @pg_field_type($resource, $i),
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'length' => @pg_field_size($resource, $i),
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'flags' => '',
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);
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$mdb2type_info = $db->datatype->mapNativeDatatype($res[$i]);
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if (PEAR::isError($mdb2type_info)) {
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return $mdb2type_info;
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}
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$res[$i]['mdb2type'] = $mdb2type_info[0][0];
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if ($mode & MDB2_TABLEINFO_ORDER) {
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$res['order'][$res[$i]['name']] = $i;
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}
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if ($mode & MDB2_TABLEINFO_ORDERTABLE) {
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$res['ordertable'][$res[$i]['table']][$res[$i]['name']] = $i;
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}
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}
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return $res;
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}
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}
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?>
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