Source for file pgsql.php
Documentation is available at pgsql.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 |
// | 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: Paul Cooper <pgc@ucecom.com> |
// +----------------------------------------------------------------------+
// $Id: pgsql.php,v 1.19 2005/04/19 12:53:42 lsmith Exp $
require_once 'MDB2/Driver/Reverse/Common.php';
* MDB2 PostGreSQL driver for the schema reverse engineering module
* @author Paul Cooper <pgc@ucecom.com>
// {{{ getTableFieldDefinition()
* get the stucture of a field into an array
* @param string $table name of table that should be used in method
* @param string $field_name name of field that should be used in method
* @return mixed data array on success, a MDB2 error on failure
$db = & $GLOBALS['_MDB2_databases'][$this->db_index];
$result = $db->loadModule ('Datatype');
if (PEAR ::isError ($result)) {
$column = $db->queryRow (" SELECT
attnum,attname,typname,attlen,attnotnull,
atttypmod,usename,usesysid,pg_class.oid,relpages,
reltuples,relhaspkey,relhasrules,relacl,adsrc
FROM pg_class,pg_user,pg_type,
pg_attribute left outer join pg_attrdef on
pg_attribute.attrelid=pg_attrdef.adrelid
WHERE (pg_class.relname='$table')
and (pg_class.oid=pg_attribute.attrelid)
and (pg_class.relowner=pg_user.usesysid)
and (pg_attribute.atttypid=pg_type.oid)
and attname = '$field_name'
if (PEAR ::isError ($column)) {
list ($types, $length) = $db->datatype ->mapNativeDatatype ($column);
if ($column['attnotnull'] == 't') {
// todo .. check how default look like
if (!preg_match("/nextval\('([^']+)'/", $column['adsrc'])
&& strlen($column['adsrc']) > 2
$default = substr($column['adsrc'], 1 , -1 );
foreach ($types as $key => $type) {
$definition[0 ][$key] = array ('type' => $type);
$definition[0 ][$key]['notnull'] = true;
$definition[0 ][$key]['default'] = $default;
$definition[0 ][$key]['length'] = $length;
if (preg_match("/nextval\('([^']+)'/", $column['adsrc'], $nextvals)) {
$implicit_sequence = array ();
$implicit_sequence['on'] = array ();
$implicit_sequence['on']['table'] = $table;
$implicit_sequence['on']['field'] = $field_name;
$definition[1 ]['name'] = $nextvals[1 ];
$definition[1 ]['definition'] = $implicit_sequence;
// check that its not just a unique field
$query = " SELECT oid,indexrelid,indrelid,indkey,indisunique,indisprimary
WHERE (pg_class.relname='$table') AND (pg_class.oid=pg_index.indrelid)";
$indkeys = explode(' ', $indexes['indkey']);
if (in_array($column['attnum'], $indkeys)
&& $indexes['indisprimary'] == 't'
&& $indexes['indisunique'] != 't'
$query = " SELECT relname FROM pg_class WHERE oid={$indexes['indexrelid']}";
$index_name = $db->queryOne ($query);
if (PEAR ::isError ($index_name)) {
$implicit_index = array ();
$implicit_index['unique'] = true;
$implicit_index['fields'][$field_name] = $index_name;
$definition[2 ]['name'] = $field_name;
$definition[2 ]['definition'] = $implicit_index;
// {{{ getTableIndexDefinition()
* get the stucture of an index into an array
* @param string $table name of table that should be used in method
* @param string $index_name name of index that should be used in method
* @return mixed data array on success, a MDB2 error on failure
$db = & $GLOBALS['_MDB2_databases'][$this->db_index];
$query = " SELECT * FROM pg_index, pg_class
WHERE (pg_class.relname='$index_name') AND (pg_class.oid=pg_index.indexrelid)";
if (PEAR ::isError ($row)) {
if ($row['relname'] != $index_name) {
'getTableIndexDefinition: it was not specified an existing table index');
$db->loadModule ('Manager');
$columns = $db->manager ->listTableFields ($table);
if ($row['indisunique'] == 't') {
$definition['unique'] = true;
$index_column_numbers = explode(' ', $row['indkey']);
foreach ($index_column_numbers as $number) {
$definition['fields'][$columns[($number - 1 )]] = array ('sorting' => 'ascending');
* Returns information about a table or a result set
* NOTE: only supports 'table' and 'flags' if <var>$result</var>
* @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
* @param int $mode a valid tableInfo mode
* @return array an associative array with the information requested.
* A MDB2_Error object on failure.
* @see MDB2_common::tableInfo()
$db = & $GLOBALS['_MDB2_databases'][$this->db_index];
* Probably received a table name.
* Create a result resource identifier.
$id = $db->_doQuery (" SELECT * FROM $result LIMIT 0" );
if (PEAR ::isError ($id)) {
* Probably received a result object.
* Extract the result resource identifier.
$id = $result->getResource ();
* Probably received a result resource identifier.
* Deprecated. Here for compatibility only.
$case_func = 'strtolower';
$count = @pg_num_fields ($id);
$res['num_fields'] = $count;
for ($i = 0; $i < $count; $i++ ) {
'table' => $got_string ? $case_func($result) : '',
'name' => $case_func(@pg_field_name ($id, $i)),
'type' => @pg_field_type ($id, $i),
'len' => @pg_field_size ($id, $i),
$res['order'][$res[$i]['name']] = $i;
$res['ordertable'][$res[$i]['table']][$res[$i]['name']] = $i;
// free the result only if we were called on a table
* Supports "not_null", "default_value", "primary_key", "unique_key"
* and "multiple_key". The default value is passed through
* rawurlencode() in case there are spaces in it.
* @param int $resource the PostgreSQL result identifier
* @param int $num_field the field number
* @return string the flags
$db = & $GLOBALS['_MDB2_databases'][$this->db_index];
$field_name = @pg_field_name ($resource, $num_field);
$result = @pg_query ($db->connection , " SELECT f.attnotnull, f.atthasdef
FROM pg_attribute f, pg_class tab, pg_type typ
WHERE tab.relname = typ.typname
AND typ.typrelid = f.attrelid
AND f.attname = '$field_name'
AND tab.relname = '$table_name'" );
if (@pg_num_rows ($result) > 0 ) {
$row = @pg_fetch_row ($result, 0 );
$flags = ($row[0 ] == 't') ? 'not_null ' : '';
$result = @pg_query ($db->connection , " SELECT a.adsrc
FROM pg_attribute f, pg_class tab, pg_type typ, pg_attrdef a
WHERE tab.relname = typ.typname AND typ.typrelid = f.attrelid
AND f.attrelid = a.adrelid AND f.attname = '$field_name'
AND tab.relname = '$table_name' AND f.attnum = a.adnum" );
$row = @pg_fetch_row ($result, 0 );
$result = @pg_query ($db->connection , " SELECT i.indisunique, i.indisprimary, i.indkey
FROM pg_attribute f, pg_class tab, pg_type typ, pg_index i
WHERE tab.relname = typ.typname
AND typ.typrelid = f.attrelid
AND f.attrelid = i.indrelid
AND f.attname = '$field_name'
AND tab.relname = '$table_name'" );
$count = @pg_num_rows ($result);
for ($i = 0; $i < $count ; $i++ ) {
$row = @pg_fetch_row ($result, $i);
$flags .= ($row[0 ] == 't' && $row[1 ] == 'f') ? 'unique_key ' : '';
$flags .= ($row[1 ] == 't') ? 'primary_key ' : '';
$flags .= 'multiple_key ';
Documentation generated on Mon, 11 Mar 2019 14:20:23 -0400 by phpDocumentor 1.4.4. PEAR Logo Copyright © PHP Group 2004.
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