<?php
|
// vim: set et ts=4 sw=4 fdm=marker:
|
// +----------------------------------------------------------------------+
|
// | 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 |
|
// | 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: Paul Cooper <pgc@ucecom.com> |
|
// +----------------------------------------------------------------------+
|
//
|
// $Id$
|
|
/**
|
* MDB2 PostGreSQL driver
|
*
|
* @package MDB2
|
* @category Database
|
* @author Paul Cooper <pgc@ucecom.com>
|
*/
|
class MDB2_Driver_pgsql extends MDB2_Driver_Common
|
{
|
// {{{ properties
|
var $escape_quotes = "\\";
|
|
// }}}
|
// {{{ constructor
|
|
/**
|
* Constructor
|
*/
|
function __construct()
|
{
|
parent::__construct();
|
|
$this->phptype = 'pgsql';
|
$this->dbsyntax = 'pgsql';
|
|
$this->supported['sequences'] = true;
|
$this->supported['indexes'] = true;
|
$this->supported['affected_rows'] = true;
|
$this->supported['summary_functions'] = true;
|
$this->supported['order_by_text'] = true;
|
$this->supported['transactions'] = true;
|
$this->supported['current_id'] = true;
|
$this->supported['limit_queries'] = true;
|
$this->supported['LOBs'] = true;
|
$this->supported['replace'] = 'emulated';
|
$this->supported['sub_selects'] = true;
|
$this->supported['auto_increment'] = 'emulated';
|
$this->supported['primary_key'] = true;
|
}
|
|
// }}}
|
// {{{ errorInfo()
|
|
/**
|
* This method is used to collect information about an error
|
*
|
* @param integer $error
|
* @return array
|
* @access public
|
*/
|
function errorInfo($error = null)
|
{
|
// Fall back to MDB2_ERROR if there was no mapping.
|
$error_code = MDB2_ERROR;
|
|
$native_msg = '';
|
if (is_resource($error)) {
|
$native_msg = @pg_result_error($error);
|
} elseif ($this->connection) {
|
$native_msg = @pg_last_error($this->connection);
|
if (!$native_msg && @pg_connection_status($this->connection) === PGSQL_CONNECTION_BAD) {
|
$native_msg = 'Database connection has been lost.';
|
$error_code = MDB2_ERROR_CONNECT_FAILED;
|
}
|
}
|
|
static $error_regexps;
|
if (empty($error_regexps)) {
|
$error_regexps = array(
|
'/column .* (of relation .*)?does not exist/i'
|
=> MDB2_ERROR_NOSUCHFIELD,
|
'/(relation|sequence|table).*does not exist|class .* not found/i'
|
=> MDB2_ERROR_NOSUCHTABLE,
|
'/index .* does not exist/'
|
=> MDB2_ERROR_NOT_FOUND,
|
'/relation .* already exists/i'
|
=> MDB2_ERROR_ALREADY_EXISTS,
|
'/(divide|division) by zero$/i'
|
=> MDB2_ERROR_DIVZERO,
|
'/pg_atoi: error in .*: can\'t parse /i'
|
=> MDB2_ERROR_INVALID_NUMBER,
|
'/invalid input syntax for( type)? (integer|numeric)/i'
|
=> MDB2_ERROR_INVALID_NUMBER,
|
'/value .* is out of range for type \w*int/i'
|
=> MDB2_ERROR_INVALID_NUMBER,
|
'/integer out of range/i'
|
=> MDB2_ERROR_INVALID_NUMBER,
|
'/value too long for type character/i'
|
=> MDB2_ERROR_INVALID,
|
'/attribute .* not found|relation .* does not have attribute/i'
|
=> MDB2_ERROR_NOSUCHFIELD,
|
'/column .* specified in USING clause does not exist in (left|right) table/i'
|
=> MDB2_ERROR_NOSUCHFIELD,
|
'/parser: parse error at or near/i'
|
=> MDB2_ERROR_SYNTAX,
|
'/syntax error at/'
|
=> MDB2_ERROR_SYNTAX,
|
'/column reference .* is ambiguous/i'
|
=> MDB2_ERROR_SYNTAX,
|
'/permission denied/'
|
=> MDB2_ERROR_ACCESS_VIOLATION,
|
'/violates not-null constraint/'
|
=> MDB2_ERROR_CONSTRAINT_NOT_NULL,
|
'/violates [\w ]+ constraint/'
|
=> MDB2_ERROR_CONSTRAINT,
|
'/referential integrity violation/'
|
=> MDB2_ERROR_CONSTRAINT,
|
'/more expressions than target columns/i'
|
=> MDB2_ERROR_VALUE_COUNT_ON_ROW,
|
);
|
}
|
foreach ($error_regexps as $regexp => $code) {
|
if (preg_match($regexp, $native_msg)) {
|
$error_code = $code;
|
break;
|
}
|
}
|
|
return array($error_code, null, $native_msg);
|
}
|
|
// }}}
|
// {{{ beginTransaction()
|
|
/**
|
* Start a transaction.
|
*
|
* @return mixed MDB2_OK on success, a MDB2 error on failure
|
* @access public
|
*/
|
function beginTransaction()
|
{
|
$this->debug('starting transaction', 'beginTransaction');
|
if ($this->in_transaction) {
|
return MDB2_OK; //nothing to do
|
}
|
if (!$this->destructor_registered && $this->opened_persistent) {
|
$this->destructor_registered = true;
|
register_shutdown_function('MDB2_closeOpenTransactions');
|
}
|
$result = $this->_doQuery('BEGIN', true);
|
if (PEAR::isError($result)) {
|
return $result;
|
}
|
$this->in_transaction = true;
|
return MDB2_OK;
|
}
|
|
// }}}
|
// {{{ commit()
|
|
/**
|
* Commit the database changes done during a transaction that is in
|
* progress.
|
*
|
* @return mixed MDB2_OK on success, a MDB2 error on failure
|
* @access public
|
*/
|
function commit()
|
{
|
$this->debug('commit transaction', 'commit');
|
if (!$this->in_transaction) {
|
return $this->raiseError(MDB2_ERROR, null, null,
|
'commit: transaction changes are being auto committed');
|
}
|
$result = $this->_doQuery('COMMIT', true);
|
if (PEAR::isError($result)) {
|
return $result;
|
}
|
$this->in_transaction = false;
|
return MDB2_OK;
|
}
|
|
// }}}
|
// {{{ rollback()
|
|
/**
|
* Cancel any database changes done during a transaction that is in
|
* progress.
|
*
|
* @return mixed MDB2_OK on success, a MDB2 error on failure
|
* @access public
|
*/
|
function rollback()
|
{
|
$this->debug('rolling back transaction', 'rollback');
|
if (!$this->in_transaction) {
|
return $this->raiseError(MDB2_ERROR, null, null,
|
'rollback: transactions can not be rolled back when changes are auto committed');
|
}
|
$result = $this->_doQuery('ROLLBACK', true);
|
if (PEAR::isError($result)) {
|
return $result;
|
}
|
$this->in_transaction = false;
|
return MDB2_OK;
|
}
|
|
// }}}
|
// {{{ _doConnect()
|
|
/**
|
* Does the grunt work of connecting to the database
|
*
|
* @return mixed connection resource on success, MDB2 Error Object on failure
|
* @access protected
|
**/
|
function _doConnect($database_name, $persistent = false)
|
{
|
if ($database_name == '') {
|
$database_name = 'template1';
|
}
|
|
$protocol = $this->dsn['protocol'] ? $this->dsn['protocol'] : 'tcp';
|
|
$params = array('');
|
if ($protocol == 'tcp') {
|
if ($this->dsn['hostspec']) {
|
$params[0].= 'host=' . $this->dsn['hostspec'];
|
}
|
if ($this->dsn['port']) {
|
$params[0].= ' port=' . $this->dsn['port'];
|
}
|
} elseif ($protocol == 'unix') {
|
// Allow for pg socket in non-standard locations.
|
if ($this->dsn['socket']) {
|
$params[0].= 'host=' . $this->dsn['socket'];
|
}
|
if ($this->dsn['port']) {
|
$params[0].= ' port=' . $this->dsn['port'];
|
}
|
}
|
if ($database_name) {
|
$params[0].= ' dbname=\'' . addslashes($database_name) . '\'';
|
}
|
if ($this->dsn['username']) {
|
$params[0].= ' user=\'' . addslashes($this->dsn['username']) . '\'';
|
}
|
if ($this->dsn['password']) {
|
$params[0].= ' password=\'' . addslashes($this->dsn['password']) . '\'';
|
}
|
if (!empty($this->dsn['options'])) {
|
$params[0].= ' options=' . $this->dsn['options'];
|
}
|
if (!empty($this->dsn['tty'])) {
|
$params[0].= ' tty=' . $this->dsn['tty'];
|
}
|
if (!empty($this->dsn['connect_timeout'])) {
|
$params[0].= ' connect_timeout=' . $this->dsn['connect_timeout'];
|
}
|
if (!empty($this->dsn['sslmode'])) {
|
$params[0].= ' sslmode=' . $this->dsn['sslmode'];
|
}
|
if (!empty($this->dsn['service'])) {
|
$params[0].= ' service=' . $this->dsn['service'];
|
}
|
|
if (isset($this->dsn['new_link'])
|
&& ($this->dsn['new_link'] == 'true' || $this->dsn['new_link'] === true))
|
{
|
if (version_compare(phpversion(), '4.3.0', '>=')) {
|
$params[] = PGSQL_CONNECT_FORCE_NEW;
|
}
|
}
|
|
$connect_function = $persistent ? 'pg_pconnect' : 'pg_connect';
|
|
putenv('PGDATESTYLE=ISO');
|
|
@ini_set('track_errors', true);
|
$php_errormsg = '';
|
$connection = @call_user_func_array($connect_function, $params);
|
@ini_restore('track_errors');
|
if (!$connection) {
|
return $this->raiseError(MDB2_ERROR_CONNECT_FAILED,
|
null, null, strip_tags($php_errormsg));
|
}
|
return $connection;
|
}
|
|
// }}}
|
// {{{ connect()
|
|
/**
|
* Connect to the database
|
*
|
* @return true on success, MDB2 Error Object on failure
|
* @access public
|
**/
|
function connect()
|
{
|
if (is_resource($this->connection)) {
|
if (count(array_diff($this->connected_dsn, $this->dsn)) == 0
|
&& $this->connected_database_name == $this->database_name
|
&& ($this->opened_persistent == $this->options['persistent'])
|
) {
|
return MDB2_OK;
|
}
|
$this->disconnect(false);
|
}
|
|
if (!PEAR::loadExtension($this->phptype)) {
|
return $this->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
|
'connect: extension '.$this->phptype.' is not compiled into PHP');
|
}
|
|
if ($this->database_name) {
|
$connection = $this->_doConnect($this->database_name, $this->options['persistent']);
|
if (PEAR::isError($connection)) {
|
return $connection;
|
}
|
$this->connection = $connection;
|
$this->connected_dsn = $this->dsn;
|
$this->connected_database_name = $this->database_name;
|
$this->opened_persistent = $this->options['persistent'];
|
$this->dbsyntax = $this->dsn['dbsyntax'] ? $this->dsn['dbsyntax'] : $this->phptype;
|
}
|
return MDB2_OK;
|
}
|
|
// }}}
|
// {{{ disconnect()
|
|
/**
|
* Log out and disconnect from the database.
|
*
|
* @return mixed true on success, false if not connected and error
|
* object on error
|
* @access public
|
*/
|
function disconnect($force = true)
|
{
|
if (is_resource($this->connection)) {
|
if (!$this->opened_persistent || $force) {
|
@pg_close($this->connection);
|
}
|
$this->connection = 0;
|
}
|
return MDB2_OK;
|
}
|
|
// }}}
|
// {{{ standaloneQuery()
|
|
/**
|
* execute a query as DBA
|
*
|
* @param string $query the SQL query
|
* @param mixed $types array that contains the types of the columns in
|
* the result set
|
* @return mixed MDB2_OK on success, a MDB2 error on failure
|
* @access public
|
*/
|
function &standaloneQuery($query, $types = null)
|
{
|
$connection = $this->_doConnect('template1', false);
|
if (PEAR::isError($connection)) {
|
$err =& $this->raiseError(MDB2_ERROR_CONNECT_FAILED, null, null,
|
'Cannot connect to template1');
|
return $err;
|
}
|
|
$isManip = MDB2::isManip($query);
|
$offset = $this->row_offset;
|
$limit = $this->row_limit;
|
$this->row_offset = $this->row_limit = 0;
|
$query = $this->_modifyQuery($query, $isManip, $limit, $offset);
|
|
$result = $this->_doQuery($query, $isManip, $connection, false);
|
@pg_close($connection);
|
if (PEAR::isError($result)) {
|
return $result;
|
}
|
|
if ($isManip) {
|
return $result;
|
}
|
|
$result =& $this->_wrapResult($result, $types, true, false, $limit, $offset);
|
return $result;
|
}
|
|
// }}}
|
// {{{ _doQuery()
|
|
/**
|
* Execute a query
|
* @param string $query query
|
* @param boolean $isManip if the query is a manipulation query
|
* @param resource $connection
|
* @param string $database_name
|
* @return result or error object
|
* @access protected
|
*/
|
function _doQuery($query, $isManip = false, $connection = null, $database_name = null)
|
{
|
$this->last_query = $query;
|
$this->debug($query, 'query');
|
if ($this->options['disable_query']) {
|
if ($isManip) {
|
return 0;
|
}
|
return null;
|
}
|
|
if (is_null($connection)) {
|
$err = $this->connect();
|
if (PEAR::isError($err)) {
|
return $err;
|
}
|
$connection = $this->connection;
|
}
|
|
$result = @pg_query($connection, $query);
|
if (!$result) {
|
return $this->raiseError();
|
}
|
|
if ($isManip) {
|
return @pg_affected_rows($result);
|
} elseif (!preg_match('/^\s*\(*\s*(SELECT|EXPLAIN|FETCH|SHOW)\s/si', $query)) {
|
return 0;
|
}
|
return $result;
|
}
|
|
// }}}
|
// {{{ _modifyQuery()
|
|
/**
|
* Changes a query string for various DBMS specific reasons
|
*
|
* @param string $query query to modify
|
* @return the new (modified) query
|
* @access protected
|
*/
|
function _modifyQuery($query, $isManip, $limit, $offset)
|
{
|
if ($limit > 0
|
&& !preg_match('/LIMIT\s*\d(\s*(,|OFFSET)\s*\d+)?/i', $query)
|
) {
|
$query = rtrim($query);
|
if (substr($query, -1) == ';') {
|
$query = substr($query, 0, -1);
|
}
|
if ($isManip) {
|
$manip = preg_replace('/^(DELETE FROM|UPDATE).*$/', '\\1', $query);
|
$from = $match[2];
|
$where = $match[3];
|
$query = $manip.' '.$from.' WHERE ctid=(SELECT ctid FROM '.$from.' '.$where.' LIMIT '.$limit.')';
|
} else {
|
$query.= " LIMIT $limit OFFSET $offset";
|
}
|
}
|
return $query;
|
}
|
|
// }}}
|
// {{{ nextID()
|
|
/**
|
* returns the next free id of a sequence
|
*
|
* @param string $seq_name name of the sequence
|
* @param boolean $ondemand when true the seqence is
|
* automatic created, if it
|
* not exists
|
* @return mixed MDB2 Error Object or id
|
* @access public
|
*/
|
function nextID($seq_name, $ondemand = true)
|
{
|
$sequence_name = $this->getSequenceName($seq_name);
|
$query = "SELECT NEXTVAL('$sequence_name')";
|
$this->expectError(MDB2_ERROR_NOSUCHTABLE);
|
$result = $this->queryOne($query, 'integer');
|
$this->popExpect();
|
if (PEAR::isError($result)) {
|
if ($ondemand && $result->getCode() == MDB2_ERROR_NOSUCHTABLE) {
|
$this->loadModule('Manager');
|
$result = $this->manager->createSequence($seq_name, 1);
|
if (PEAR::isError($result)) {
|
return $this->raiseError(MDB2_ERROR, null, null,
|
'nextID: on demand sequence could not be created');
|
}
|
return $this->nextId($seq_name, false);
|
}
|
}
|
return $result;
|
}
|
|
// }}}
|
// {{{ currID()
|
|
/**
|
* returns the current id of a sequence
|
*
|
* @param string $seq_name name of the sequence
|
* @return mixed MDB2 Error Object or id
|
* @access public
|
*/
|
function currID($seq_name)
|
{
|
$sequence_name = $this->getSequenceName($seq_name);
|
return $this->queryOne("SELECT last_value FROM $sequence_name", 'integer');
|
}
|
}
|
|
class MDB2_Result_pgsql extends MDB2_Result_Common
|
{
|
// }}}
|
// {{{ fetchRow()
|
|
/**
|
* Fetch a row and insert the data into an existing array.
|
*
|
* @param int $fetchmode how the array data should be indexed
|
* @param int $rownum number of the row where the data can be found
|
* @return int data array on success, a MDB2 error on failure
|
* @access public
|
*/
|
function &fetchRow($fetchmode = MDB2_FETCHMODE_DEFAULT, $rownum = null)
|
{
|
if (!is_null($rownum)) {
|
$seek = $this->seek($rownum);
|
if (PEAR::isError($seek)) {
|
return $seek;
|
}
|
}
|
if ($fetchmode == MDB2_FETCHMODE_DEFAULT) {
|
$fetchmode = $this->db->fetchmode;
|
}
|
if ($fetchmode & MDB2_FETCHMODE_ASSOC) {
|
$row = @pg_fetch_array($this->result, null, PGSQL_ASSOC);
|
if (is_array($row)
|
&& $this->db->options['portability'] & MDB2_PORTABILITY_FIX_CASE
|
) {
|
$row = array_change_key_case($row, $this->db->options['field_case']);
|
}
|
} else {
|
$row = @pg_fetch_row($this->result);
|
}
|
if (!$row) {
|
if (is_null($this->result)) {
|
$err =& $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
|
'fetchRow: resultset has already been freed');
|
return $err;
|
}
|
$null = null;
|
return $null;
|
}
|
if ($this->db->options['portability'] & MDB2_PORTABILITY_EMPTY_TO_NULL) {
|
$this->db->_fixResultArrayValues($row, MDB2_PORTABILITY_EMPTY_TO_NULL);
|
}
|
if (!empty($this->values)) {
|
$this->_assignBindColumns($row);
|
}
|
if (!empty($this->types)) {
|
$row = $this->db->datatype->convertResultRow($this->types, $row);
|
}
|
if ($fetchmode === MDB2_FETCHMODE_OBJECT) {
|
$object_class = $this->db->options['fetch_class'];
|
if ($object_class == 'stdClass') {
|
$row = (object) $row;
|
} else {
|
$row = &new $object_class($row);
|
}
|
}
|
++$this->rownum;
|
return $row;
|
}
|
|
// }}}
|
// {{{ _getColumnNames()
|
|
/**
|
* Retrieve the names of columns returned by the DBMS in a query result.
|
*
|
* @return mixed an associative array variable
|
* that will hold the names of columns. The
|
* indexes of the array are the column names
|
* mapped to lower case and the values are the
|
* respective numbers of the columns starting
|
* from 0. Some DBMS may not return any
|
* columns when the result set does not
|
* contain any rows.
|
*
|
* a MDB2 error on failure
|
* @access private
|
*/
|
function _getColumnNames()
|
{
|
$columns = array();
|
$numcols = $this->numCols();
|
if (PEAR::isError($numcols)) {
|
return $numcols;
|
}
|
for ($column = 0; $column < $numcols; $column++) {
|
$column_name = @pg_field_name($this->result, $column);
|
$columns[$column_name] = $column;
|
}
|
if ($this->db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
|
$columns = array_change_key_case($columns, $this->db->options['field_case']);
|
}
|
return $columns;
|
}
|
|
// }}}
|
// {{{ numCols()
|
|
/**
|
* Count the number of columns returned by the DBMS in a query result.
|
*
|
* @access public
|
* @return mixed integer value with the number of columns, a MDB2 error
|
* on failure
|
*/
|
function numCols()
|
{
|
$cols = @pg_num_fields($this->result);
|
if (is_null($cols)) {
|
if (is_null($this->result)) {
|
return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
|
'numCols: resultset has already been freed');
|
}
|
return $this->db->raiseError();
|
}
|
return $cols;
|
}
|
|
// }}}
|
// {{{ free()
|
|
/**
|
* Free the internal resources associated with result.
|
*
|
* @return boolean true on success, false if result is invalid
|
* @access public
|
*/
|
function free()
|
{
|
$free = @pg_free_result($this->result);
|
if (!$free) {
|
if (is_null($this->result)) {
|
return MDB2_OK;
|
}
|
return $this->db->raiseError();
|
}
|
$this->result = null;
|
return MDB2_OK;
|
}
|
}
|
|
class MDB2_BufferedResult_pgsql extends MDB2_Result_pgsql
|
{
|
// {{{ seek()
|
|
/**
|
* seek to a specific row in a result set
|
*
|
* @param int $rownum number of the row where the data can be found
|
* @return mixed MDB2_OK on success, a MDB2 error on failure
|
* @access public
|
*/
|
function seek($rownum = 0)
|
{
|
if ($this->rownum != ($rownum - 1) && !@pg_result_seek($this->result, $rownum)) {
|
if (is_null($this->result)) {
|
return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
|
'seek: resultset has already been freed');
|
}
|
return $this->db->raiseError(MDB2_ERROR_INVALID, null, null,
|
'seek: tried to seek to an invalid row number ('.$rownum.')');
|
}
|
$this->rownum = $rownum - 1;
|
return MDB2_OK;
|
}
|
|
// }}}
|
// {{{ valid()
|
|
/**
|
* check if the end of the result set has been reached
|
*
|
* @return mixed true or false on sucess, a MDB2 error on failure
|
* @access public
|
*/
|
function valid()
|
{
|
$numrows = $this->numRows();
|
if (PEAR::isError($numrows)) {
|
return $numrows;
|
}
|
return $this->rownum < ($numrows - 1);
|
}
|
|
// }}}
|
// {{{ numRows()
|
|
/**
|
* returns the number of rows in a result object
|
*
|
* @return mixed MDB2 Error Object or the number of rows
|
* @access public
|
*/
|
function numRows()
|
{
|
$rows = @pg_num_rows($this->result);
|
if (is_null($rows)) {
|
if (is_null($this->result)) {
|
return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
|
'numRows: resultset has already been freed');
|
}
|
return $this->raiseError();
|
}
|
return $rows;
|
}
|
}
|
|
class MDB2_Statement_pgsql extends MDB2_Statement_Common
|
{
|
|
}
|
?>
|
