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 <?php
 /**
  * Zend Framework
  *
  * LICENSE
  *
  * This source file is subject to the new BSD license that is bundled
  * with this package in the file LICENSE.txt.
  * It is also available through the world-wide-web at this URL:
  * http://framework.zend.com/license/new-bsd
  * If you did not receive a copy of the license and are unable to
  * obtain it through the world-wide-web, please send an email
  * to license@zend.com so we can send you a copy immediately.
  *
  * @category   Zend
  * @package    Zend_Db
  * @subpackage Statement
  * @copyright  Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  * @version    $Id$
  */
 
 /**
  * @see Zend_Db_Statement
  */
 // require_once 'Zend/Db/Statement.php';
 
 /**
  * Proxy class to wrap a PDOStatement object.
  * Matches the interface of PDOStatement.  All methods simply proxy to the
  * matching method in PDOStatement.  PDOExceptions thrown by PDOStatement
  * are re-thrown as Zend_Db_Statement_Exception.
  *
  * @category   Zend
  * @package    Zend_Db
  * @subpackage Statement
  * @copyright  Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  */
 class Zend_Db_Statement_Pdo extends Zend_Db_Statement implements IteratorAggregate
 {
 
     /**
      * @var int
      */
     protected $_fetchMode = PDO::FETCH_ASSOC;
 
     /**
      * Prepare a string SQL statement and create a statement object.
      *
      * @param string $sql
      * @return void
      * @throws Zend_Db_Statement_Exception
      */
     protected function _prepare($sql)
     {
         try {
             $this->_stmt = $this->_adapter->getConnection()->prepare($sql);
         } catch (PDOException $e) {
             // require_once 'Zend/Db/Statement/Exception.php';
             throw new Zend_Db_Statement_Exception($e->getMessage(), $e->getCode(), $e);
         }
     }
 
     /**
      * Bind a column of the statement result set to a PHP variable.
      *
      * @param string $column Name the column in the result set, either by
      *                       position or by name.
      * @param mixed  $param  Reference to the PHP variable containing the value.
      * @param mixed  $type   OPTIONAL
      * @return bool
      * @throws Zend_Db_Statement_Exception
      */
     public function bindColumn($column, &$param, $type = null)
     {
         try {
             if ($type === null) {
                 return $this->_stmt->bindColumn($column, $param);
             } else {
                 return $this->_stmt->bindColumn($column, $param, $type);
             }
         } catch (PDOException $e) {
             // require_once 'Zend/Db/Statement/Exception.php';
             throw new Zend_Db_Statement_Exception($e->getMessage(), $e->getCode(), $e);
         }
     }
 
     /**
      * Binds a parameter to the specified variable name.
      *
      * @param mixed $parameter Name the parameter, either integer or string.
      * @param mixed $variable  Reference to PHP variable containing the value.
      * @param mixed $type      OPTIONAL Datatype of SQL parameter.
      * @param mixed $length    OPTIONAL Length of SQL parameter.
      * @param mixed $options   OPTIONAL Other options.
      * @return bool
      * @throws Zend_Db_Statement_Exception
      */
     protected function _bindParam($parameter, &$variable, $type = null, $length = null, $options = null)
     {
         try {
             if ($type === null) {
                 if (is_bool($variable)) {
                     $type = PDO::PARAM_BOOL;
                 } elseif ($variable === null) {
                     $type = PDO::PARAM_NULL;
                 } elseif (is_integer($variable)) {
                     $type = PDO::PARAM_INT;
                 } else {
                     $type = PDO::PARAM_STR;
                 }
             }
             return $this->_stmt->bindParam($parameter, $variable, $type, $length, $options);
         } catch (PDOException $e) {
             // require_once 'Zend/Db/Statement/Exception.php';
             throw new Zend_Db_Statement_Exception($e->getMessage(), $e->getCode(), $e);
         }
     }
 
     /**
      * Binds a value to a parameter.
      *
      * @param mixed $parameter Name the parameter, either integer or string.
      * @param mixed $value     Scalar value to bind to the parameter.
      * @param mixed $type      OPTIONAL Datatype of the parameter.
      * @return bool
      * @throws Zend_Db_Statement_Exception
      */
     public function bindValue($parameter, $value, $type = null)
     {
         if (is_string($parameter) && $parameter[0] != ':') {
             $parameter = ":$parameter";
         }
 
         $this->_bindParam[$parameter] = $value;
 
         try {
             if ($type === null) {
                 return $this->_stmt->bindValue($parameter, $value);
             } else {
                 return $this->_stmt->bindValue($parameter, $value, $type);
             }
         } catch (PDOException $e) {
             // require_once 'Zend/Db/Statement/Exception.php';
             throw new Zend_Db_Statement_Exception($e->getMessage(), $e->getCode(), $e);
         }
     }
 
     /**
      * Closes the cursor, allowing the statement to be executed again.
      *
      * @return bool
      * @throws Zend_Db_Statement_Exception
      */
     public function closeCursor()
     {
         try {
             return $this->_stmt->closeCursor();
         } catch (PDOException $e) {
             // require_once 'Zend/Db/Statement/Exception.php';
             throw new Zend_Db_Statement_Exception($e->getMessage(), $e->getCode(), $e);
         }
     }
 
     /**
      * Returns the number of columns in the result set.
      * Returns null if the statement has no result set metadata.
      *
      * @return int The number of columns.
      * @throws Zend_Db_Statement_Exception
      */
     public function columnCount()
     {
         try {
             return $this->_stmt->columnCount();
         } catch (PDOException $e) {
             // require_once 'Zend/Db/Statement/Exception.php';
             throw new Zend_Db_Statement_Exception($e->getMessage(), $e->getCode(), $e);
         }
     }
 
     /**
      * Retrieves the error code, if any, associated with the last operation on
      * the statement handle.
      *
      * @return string error code.
      * @throws Zend_Db_Statement_Exception
      */
     public function errorCode()
     {
         try {
             return $this->_stmt->errorCode();
         } catch (PDOException $e) {
             // require_once 'Zend/Db/Statement/Exception.php';
             throw new Zend_Db_Statement_Exception($e->getMessage(), $e->getCode(), $e);
         }
     }
 
     /**
      * Retrieves an array of error information, if any, associated with the
      * last operation on the statement handle.
      *
      * @return array
      * @throws Zend_Db_Statement_Exception
      */
     public function errorInfo()
     {
         try {
             return $this->_stmt->errorInfo();
         } catch (PDOException $e) {
             // require_once 'Zend/Db/Statement/Exception.php';
             throw new Zend_Db_Statement_Exception($e->getMessage(), $e->getCode(), $e);
         }
     }
 
     /**
      * Executes a prepared statement.
      *
      * @param array $params OPTIONAL Values to bind to parameter placeholders.
      * @return bool
      * @throws Zend_Db_Statement_Exception
      */
     public function _execute(array $params = null)
     {
         try {
             if ($params !== null) {
                 return $this->_stmt->execute($params);
             } else {
                 return $this->_stmt->execute();
             }
         } catch (PDOException $e) {
             // require_once 'Zend/Db/Statement/Exception.php';
             $message = sprintf('%s, query was: %s', $e->getMessage(), $this->_stmt->queryString);
             throw new Zend_Db_Statement_Exception($message, (int) $e->getCode(), $e);
         }
     }
 
     /**
      * Fetches a row from the result set.
      *
      * @param int $style  OPTIONAL Fetch mode for this fetch operation.
      * @param int $cursor OPTIONAL Absolute, relative, or other.
      * @param int $offset OPTIONAL Number for absolute or relative cursors.
      * @return mixed Array, object, or scalar depending on fetch mode.
      * @throws Zend_Db_Statement_Exception
      */
     public function fetch($style = null, $cursor = null, $offset = null)
     {
         if ($style === null) {
             $style = $this->_fetchMode;
         }
         try {
             return $this->_stmt->fetch($style, $cursor, $offset);
         } catch (PDOException $e) {
             // require_once 'Zend/Db/Statement/Exception.php';
             throw new Zend_Db_Statement_Exception($e->getMessage(), $e->getCode(), $e);
         }
     }
 
     /**
      * Required by IteratorAggregate interface
      *
      * @return IteratorIterator
      */
     public function getIterator()
     {
         return new IteratorIterator($this->_stmt);
     }
 
     /**
      * Returns an array containing all of the result set rows.
      *
      * @param int $style OPTIONAL Fetch mode.
      * @param int $col   OPTIONAL Column number, if fetch mode is by column.
      * @return array Collection of rows, each in a format by the fetch mode.
      * @throws Zend_Db_Statement_Exception
      */
     public function fetchAll($style = null, $col = null)
     {
         if ($style === null) {
             $style = $this->_fetchMode;
         }
         try {
             if ($style == PDO::FETCH_COLUMN) {
                 if ($col === null) {
                     $col = 0;
                 }
                 return $this->_stmt->fetchAll($style, $col);
             } else {
                 return $this->_stmt->fetchAll($style);
             }
         } catch (PDOException $e) {
             // require_once 'Zend/Db/Statement/Exception.php';
             throw new Zend_Db_Statement_Exception($e->getMessage(), $e->getCode(), $e);
         }
     }
 
     /**
      * Returns a single column from the next row of a result set.
      *
      * @param int $col OPTIONAL Position of the column to fetch.
      * @return string
      * @throws Zend_Db_Statement_Exception
      */
     public function fetchColumn($col = 0)
     {
         try {
             return $this->_stmt->fetchColumn($col);
         } catch (PDOException $e) {
             // require_once 'Zend/Db/Statement/Exception.php';
             throw new Zend_Db_Statement_Exception($e->getMessage(), $e->getCode(), $e);
         }
     }
 
     /**
      * Fetches the next row and returns it as an object.
      *
      * @param string $class  OPTIONAL Name of the class to create.
      * @param array  $config OPTIONAL Constructor arguments for the class.
      * @return mixed One object instance of the specified class.
      * @throws Zend_Db_Statement_Exception
      */
     public function fetchObject($class = 'stdClass', array $config = array())
     {
         try {
             return $this->_stmt->fetchObject($class, $config);
         } catch (PDOException $e) {
             // require_once 'Zend/Db/Statement/Exception.php';
             throw new Zend_Db_Statement_Exception($e->getMessage(), $e->getCode(), $e);
         }
     }
 
     /**
      * Retrieve a statement attribute.
      *
      * @param integer $key Attribute name.
      * @return mixed      Attribute value.
      * @throws Zend_Db_Statement_Exception
      */
     public function getAttribute($key)
     {
         try {
             return $this->_stmt->getAttribute($key);
         } catch (PDOException $e) {
             // require_once 'Zend/Db/Statement/Exception.php';
             throw new Zend_Db_Statement_Exception($e->getMessage(), $e->getCode(), $e);
         }
     }
 
     /**
      * Returns metadata for a column in a result set.
      *
      * @param int $column
      * @return mixed
      * @throws Zend_Db_Statement_Exception
      */
     public function getColumnMeta($column)
     {
         try {
             return $this->_stmt->getColumnMeta($column);
         } catch (PDOException $e) {
             // require_once 'Zend/Db/Statement/Exception.php';
             throw new Zend_Db_Statement_Exception($e->getMessage(), $e->getCode(), $e);
         }
     }
 
     /**
      * Retrieves the next rowset (result set) for a SQL statement that has
      * multiple result sets.  An example is a stored procedure that returns
      * the results of multiple queries.
      *
      * @return bool
      * @throws Zend_Db_Statement_Exception
      */
     public function nextRowset()
     {
         try {
             return $this->_stmt->nextRowset();
         } catch (PDOException $e) {
             // require_once 'Zend/Db/Statement/Exception.php';
             throw new Zend_Db_Statement_Exception($e->getMessage(), $e->getCode(), $e);
         }
     }
 
     /**
      * Returns the number of rows affected by the execution of the
      * last INSERT, DELETE, or UPDATE statement executed by this
      * statement object.
      *
      * @return int     The number of rows affected.
      * @throws Zend_Db_Statement_Exception
      */
     public function rowCount()
     {
         try {
             return $this->_stmt->rowCount();
         } catch (PDOException $e) {
             // require_once 'Zend/Db/Statement/Exception.php';
             throw new Zend_Db_Statement_Exception($e->getMessage(), $e->getCode(), $e);
         }
     }
 
     /**
      * Set a statement attribute.
      *
      * @param string $key Attribute name.
      * @param mixed  $val Attribute value.
      * @return bool
      * @throws Zend_Db_Statement_Exception
      */
     public function setAttribute($key, $val)
     {
         try {
             return $this->_stmt->setAttribute($key, $val);
         } catch (PDOException $e) {
             // require_once 'Zend/Db/Statement/Exception.php';
             throw new Zend_Db_Statement_Exception($e->getMessage(), $e->getCode(), $e);
         }
     }
 
     /**
      * Set the default fetch mode for this statement.
      *
      * @param int   $mode The fetch mode.
      * @return bool
      * @throws Zend_Db_Statement_Exception
      */
     public function setFetchMode($mode)
     {
         $this->_fetchMode = $mode;
         try {
             return $this->_stmt->setFetchMode($mode);
         } catch (PDOException $e) {
             // require_once 'Zend/Db/Statement/Exception.php';
             throw new Zend_Db_Statement_Exception($e->getMessage(), $e->getCode(), $e);
         }
     }
 
 }