Source for file pgsql.php
Documentation is available at pgsql.php
// +----------------------------------------------------------------------+
// +----------------------------------------------------------------------+
// | 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 1.8 2004/04/25 14:28:01 lsmith Exp $
require_once 'MDB2/Driver/Reverse/Common.php';
* MDB2 PostGreSQL driver for the schema reverse engineering module
* @author Paul Cooper <pgc@ucecom.com>
$this->MDB2_Driver_Reverse_Common ($db_index);
// {{{ 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];
$columns = $db->queryRow (" SELECT
attnum,attname,typname,attlen,attnotnull,
atttypmod,usename,usesysid,pg_class.oid,relpages,
reltuples,relhaspkey,relhasrules,relacl,adsrc
FROM pg_class,pg_user,pg_type,
pg_attribute left outer join pg_attrdef on
pg_attribute.attrelid=pg_attrdef.adrelid
WHERE (pg_class.relname='$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'
$field_column = $columns['attname'];
$type_column = $columns['typname'];
$length = $columns['attlen'];
$length = $columns['atttypmod']-4;
//$decimal = strtok('(), '); = eh?
} elseif (strstr($db_type, 'text'))
preg_match_all('/\'.+\'/U',$row[$type_column], $matches);
if (is_array($matches)) {
foreach ($matches[0] as $value) {
$length = max($length, strlen($value)-2);
'getTableFieldDefinition: unknown database attribute type');
if ($columns['attnotnull'] == 'f') {
if (!preg_match("/nextval\('([^']+)'/",$columns['adsrc'])) {
$default = substr($columns['adsrc'],1 ,-1 );
for ($field_choices = array (), $datatype = 0; $datatype < count($type); $datatype++ ) {
$field_choices[$datatype] = array ('type' => $type[$datatype]);
$field_choices[$datatype]['notnull'] = true;
$field_choices[$datatype]['default'] = $default;
if ($type[$datatype] != 'boolean'
&& $type[$datatype] != 'time'
&& $type[$datatype] != 'date'
&& $type[$datatype] != 'timestamp')
$field_choices[$datatype]['length'] = $length;
$definition[0 ] = $field_choices;
if (preg_match("/nextval\('([^']+)'/",$columns['adsrc'],$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'] = $implicit_sequence;
// check that its not just a unique field
oid,indexrelid,indrelid,indkey,indisunique,indisprimary
WHERE (pg_class.relname='$table')
$indkeys = explode(' ',$indexes['indkey']);
if (in_array($columns['attnum'],$indkeys)) {
// doesnt look like queryAll should be used here
relname FROM pg_class WHERE oid={$columns['indexrelid']}" , null ))
$is_primary = ($indexes['isdisprimary'] == 't') ;
$is_unique = ($indexes['isdisunique'] == 't') ;
$implicit_index = array ();
$implicit_index['unique'] = true;
$implicit_index['fields'][$field_name] = $indexname['relname'];
$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 ($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') {
$definition[$index_name]['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
* @param int $mode a valid tableInfo mode
* @return array an associative array with the information requested
* or an error object if something is wrong
* @see MDB2_Driver_Common::tableInfo()
$db = & $GLOBALS['_MDB2_databases'][$this->db_index];
$case_func = 'strtolower';
* Probably received a table name.
* Create a result resource identifier.
$id = @pg_exec ($db->connection , " SELECT * FROM $result LIMIT 0" );
* Probably received a result object.
* Extract the result resource identifier.
$id = $result->getResource ();
return $db->raiseError ();
$count = @pg_numfields ($id);
// made this IF due to performance (one if is faster than $count if's)
for ($i=0; $i< $count; $i++ ) {
$res[$i]['table'] = $got_string ? $case_func($result) : '';
$res[$i]['name'] = $case_func(@pg_fieldname ($id, $i));
$res[$i]['type'] = @pg_fieldtype ($id, $i);
$res[$i]['len'] = @pg_fieldsize ($id, $i);
$res[$i]['flags'] = $got_string ? $this->_pgFieldflags ($id, $i, $result) : '';
$res['num_fields']= $count;
for ($i=0; $i< $count; $i++ ) {
$res[$i]['table'] = $got_string ? $case_func($result) : '';
$res[$i]['name'] = $case_func(@pg_fieldname ($id, $i));
$res[$i]['type'] = @pg_fieldtype ($id, $i);
$res[$i]['len'] = @pg_fieldsize ($id, $i);
$res[$i]['flags'] = $got_string ? $this->_pgFieldFlags ($id, $i, $result) : '';
$res['order'][$res[$i]['name']] = $i;
$res['ordertable'][$res[$i]['table']][$res[$i]['name']] = $i;
// free the result only if we were called on a table
* @param int $resource PostgreSQL result identifier
* @param int $num_field the field number
* @return string The flags of the field ("not_null", "default_value",
* "primary_key", "unique_key" and "multiple_key"
* are supported). The default value is passed
* through rawurlencode() in case there are spaces in it.
function _pgFieldFlags ($resource, $num_field, $table_name)
$db = & $GLOBALS['_MDB2_databases'][$this->db_index];
$field_name = @pg_fieldname ($resource, $num_field);
$result = @pg_exec ($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_numrows ($result) > 0 ) {
$row = @pg_fetch_row ($result, 0 );
$flags = ($row[0 ] == 't') ? 'not_null ' : '';
$result = @pg_exec ($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 );
$result = @pg_exec ($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'" );
$count = @pg_numrows ($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 10:15:53 -0400 by phpDocumentor 1.4.4. PEAR Logo Copyright © PHP Group 2004.
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