361 lines
10 KiB
PHP
361 lines
10 KiB
PHP
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<?php
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/**
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* Zend Framework
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*
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* LICENSE
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*
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* This source file is subject to the new BSD license that is bundled
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* with this package in the file LICENSE.txt.
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* It is also available through the world-wide-web at this URL:
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* http://framework.zend.com/license/new-bsd
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* If you did not receive a copy of the license and are unable to
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* obtain it through the world-wide-web, please send an email
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* to license@zend.com so we can send you a copy immediately.
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*
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* @category Zend
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* @package Zend_Db
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* @subpackage Statement
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* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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* @version $Id: Db2.php 17857 2009-08-27 22:01:47Z ralph $
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*/
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/**
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* @see Zend_Db_Statement
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*/
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require_once 'Zend/Db/Statement.php';
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/**
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* Extends for DB2 native adapter.
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*
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* @package Zend_Db
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* @subpackage Statement
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* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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*/
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class Zend_Db_Statement_Db2 extends Zend_Db_Statement
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{
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/**
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* Column names.
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*/
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protected $_keys;
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/**
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* Fetched result values.
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*/
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protected $_values;
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/**
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* Prepare a statement handle.
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*
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* @param string $sql
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* @return void
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* @throws Zend_Db_Statement_Db2_Exception
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*/
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public function _prepare($sql)
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{
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$connection = $this->_adapter->getConnection();
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// db2_prepare on i5 emits errors, these need to be
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// suppressed so that proper exceptions can be thrown
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$this->_stmt = @db2_prepare($connection, $sql);
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if (!$this->_stmt) {
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/**
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* @see Zend_Db_Statement_Db2_Exception
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*/
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require_once 'Zend/Db/Statement/Db2/Exception.php';
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throw new Zend_Db_Statement_Db2_Exception(
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db2_stmt_errormsg(),
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db2_stmt_error()
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);
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}
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}
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/**
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* Binds a parameter to the specified variable name.
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*
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* @param mixed $parameter Name the parameter, either integer or string.
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* @param mixed $variable Reference to PHP variable containing the value.
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* @param mixed $type OPTIONAL Datatype of SQL parameter.
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* @param mixed $length OPTIONAL Length of SQL parameter.
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* @param mixed $options OPTIONAL Other options.
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* @return bool
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* @throws Zend_Db_Statement_Db2_Exception
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*/
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public function _bindParam($parameter, &$variable, $type = null, $length = null, $options = null)
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{
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if ($type === null) {
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$type = DB2_PARAM_IN;
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}
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if (isset($options['data-type'])) {
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$datatype = $options['data-type'];
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} else {
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$datatype = DB2_CHAR;
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}
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if (!db2_bind_param($this->_stmt, $position, "variable", $type, $datatype)) {
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/**
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* @see Zend_Db_Statement_Db2_Exception
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*/
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require_once 'Zend/Db/Statement/Db2/Exception.php';
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throw new Zend_Db_Statement_Db2_Exception(
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db2_stmt_errormsg(),
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db2_stmt_error()
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);
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}
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return true;
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}
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/**
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* Closes the cursor, allowing the statement to be executed again.
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*
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* @return bool
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*/
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public function closeCursor()
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{
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if (!$this->_stmt) {
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return false;
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}
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db2_free_stmt($this->_stmt);
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$this->_stmt = false;
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return true;
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}
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/**
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* Returns the number of columns in the result set.
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* Returns null if the statement has no result set metadata.
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*
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* @return int The number of columns.
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*/
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public function columnCount()
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{
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if (!$this->_stmt) {
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return false;
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}
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return db2_num_fields($this->_stmt);
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}
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/**
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* Retrieves the error code, if any, associated with the last operation on
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* the statement handle.
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*
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* @return string error code.
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*/
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public function errorCode()
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{
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if (!$this->_stmt) {
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return false;
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}
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$error = db2_stmt_error();
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if ($error === '') {
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return false;
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}
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return $error;
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}
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/**
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* Retrieves an array of error information, if any, associated with the
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* last operation on the statement handle.
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*
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* @return array
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*/
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public function errorInfo()
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{
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$error = $this->errorCode();
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if ($error === false){
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return false;
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}
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/*
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* Return three-valued array like PDO. But DB2 does not distinguish
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* between SQLCODE and native RDBMS error code, so repeat the SQLCODE.
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*/
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return array(
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$error,
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$error,
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db2_stmt_errormsg()
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);
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}
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/**
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* Executes a prepared statement.
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*
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* @param array $params OPTIONAL Values to bind to parameter placeholders.
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* @return bool
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* @throws Zend_Db_Statement_Db2_Exception
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*/
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public function _execute(array $params = null)
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{
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if (!$this->_stmt) {
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return false;
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}
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$retval = true;
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if ($params !== null) {
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$retval = @db2_execute($this->_stmt, $params);
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} else {
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$retval = @db2_execute($this->_stmt);
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}
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if ($retval === false) {
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/**
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* @see Zend_Db_Statement_Db2_Exception
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*/
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require_once 'Zend/Db/Statement/Db2/Exception.php';
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throw new Zend_Db_Statement_Db2_Exception(
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db2_stmt_errormsg(),
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db2_stmt_error());
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}
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$this->_keys = array();
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if ($field_num = $this->columnCount()) {
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for ($i = 0; $i < $field_num; $i++) {
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$name = db2_field_name($this->_stmt, $i);
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$this->_keys[] = $name;
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}
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}
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$this->_values = array();
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if ($this->_keys) {
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$this->_values = array_fill(0, count($this->_keys), null);
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}
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return $retval;
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}
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/**
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* Fetches a row from the result set.
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*
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* @param int $style OPTIONAL Fetch mode for this fetch operation.
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* @param int $cursor OPTIONAL Absolute, relative, or other.
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* @param int $offset OPTIONAL Number for absolute or relative cursors.
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* @return mixed Array, object, or scalar depending on fetch mode.
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* @throws Zend_Db_Statement_Db2_Exception
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*/
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public function fetch($style = null, $cursor = null, $offset = null)
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{
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if (!$this->_stmt) {
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return false;
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}
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if ($style === null) {
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$style = $this->_fetchMode;
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}
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switch ($style) {
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case Zend_Db::FETCH_NUM :
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$row = db2_fetch_array($this->_stmt);
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break;
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case Zend_Db::FETCH_ASSOC :
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$row = db2_fetch_assoc($this->_stmt);
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break;
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case Zend_Db::FETCH_BOTH :
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$row = db2_fetch_both($this->_stmt);
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break;
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case Zend_Db::FETCH_OBJ :
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$row = db2_fetch_object($this->_stmt);
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break;
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case Zend_Db::FETCH_BOUND:
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$row = db2_fetch_both($this->_stmt);
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if ($row !== false) {
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return $this->_fetchBound($row);
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}
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break;
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default:
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/**
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* @see Zend_Db_Statement_Db2_Exception
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*/
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require_once 'Zend/Db/Statement/Db2/Exception.php';
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throw new Zend_Db_Statement_Db2_Exception("Invalid fetch mode '$style' specified");
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break;
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}
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return $row;
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}
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/**
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* Fetches the next row and returns it as an object.
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*
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* @param string $class OPTIONAL Name of the class to create.
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* @param array $config OPTIONAL Constructor arguments for the class.
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* @return mixed One object instance of the specified class.
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*/
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public function fetchObject($class = 'stdClass', array $config = array())
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{
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$obj = $this->fetch(Zend_Db::FETCH_OBJ);
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return $obj;
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}
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/**
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* Retrieves the next rowset (result set) for a SQL statement that has
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* multiple result sets. An example is a stored procedure that returns
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* the results of multiple queries.
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*
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* @return bool
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* @throws Zend_Db_Statement_Db2_Exception
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*/
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public function nextRowset()
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{
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/**
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* @see Zend_Db_Statement_Db2_Exception
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*/
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require_once 'Zend/Db/Statement/Db2/Exception.php';
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throw new Zend_Db_Statement_Db2_Exception(__FUNCTION__ . '() is not implemented');
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}
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/**
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* Returns the number of rows affected by the execution of the
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* last INSERT, DELETE, or UPDATE statement executed by this
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* statement object.
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*
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* @return int The number of rows affected.
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*/
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public function rowCount()
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{
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if (!$this->_stmt) {
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return false;
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}
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$num = @db2_num_rows($this->_stmt);
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if ($num === false) {
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return 0;
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}
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return $num;
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}
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/**
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* Returns an array containing all of the result set rows.
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*
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* @param int $style OPTIONAL Fetch mode.
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* @param int $col OPTIONAL Column number, if fetch mode is by column.
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* @return array Collection of rows, each in a format by the fetch mode.
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*
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* Behaves like parent, but if limit()
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* is used, the final result removes the extra column
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* 'zend_db_rownum'
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*/
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public function fetchAll($style = null, $col = null)
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{
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$data = parent::fetchAll($style, $col);
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$results = array();
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$remove = $this->_adapter->foldCase('ZEND_DB_ROWNUM');
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foreach ($data as $row) {
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if (is_array($row) && array_key_exists($remove, $row)) {
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unset($row[$remove]);
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}
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$results[] = $row;
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}
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return $results;
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}
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}
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