<?php
/**
 * Zend Framework (http://framework.zend.com/)
 *
 * @link      http://github.com/zendframework/zf2 for the canonical source repository
 * @copyright Copyright (c) 2005-2013 Zend Technologies USA Inc. (http://www.zend.com)
 * @license   http://framework.zend.com/license/new-bsd New BSD License
 */

namespace Zend\Db\Adapter\Driver\Pdo;

use 
Zend\Db\Adapter\Driver\StatementInterface;
use 
Zend\Db\Adapter\Exception;
use 
Zend\Db\Adapter\ParameterContainer;
use 
Zend\Db\Adapter\Profiler;

class 
Statement implements StatementInterfaceProfiler\ProfilerAwareInterface
{

    
/**
     * @var \PDO
     */
    
protected $pdo null;

    
/**
     * @var Profiler\ProfilerInterface
     */
    
protected $profiler null;

    
/**
     * @var Pdo
     */
    
protected $driver null;

    
/**
     *
     * @var string
     */
    
protected $sql '';

    
/**
     *
     * @var bool
     */
    
protected $isQuery null;

    
/**
     *
     * @var ParameterContainer
     */
    
protected $parameterContainer null;

    
/**
     * @var bool
     */
    
protected $parametersBound false;

    
/**
     * @var \PDOStatement
     */
    
protected $resource null;

    
/**
     *
     * @var bool
     */
    
protected $isPrepared false;

    
/**
     * Set driver
     *
     * @param  Pdo $driver
     * @return Statement
     */
    
public function setDriver(Pdo $driver)
    {
        
$this->driver $driver;
        return 
$this;
    }

    
/**
     * @param Profiler\ProfilerInterface $profiler
     * @return Statement
     */
    
public function setProfiler(Profiler\ProfilerInterface $profiler)
    {
        
$this->profiler $profiler;
        return 
$this;
    }

    
/**
     * @return null|Profiler\ProfilerInterface
     */
    
public function getProfiler()
    {
        return 
$this->profiler;
    }

    
/**
     * Initialize
     *
     * @param  \PDO $connectionResource
     * @return Statement
     */
    
public function initialize(\PDO $connectionResource)
    {
        
$this->pdo $connectionResource;
        return 
$this;
    }

    
/**
     * Set resource
     *
     * @param  \PDOStatement $pdoStatement
     * @return Statement
     */
    
public function setResource(\PDOStatement $pdoStatement)
    {
        
$this->resource $pdoStatement;
        return 
$this;
    }

    
/**
     * Get resource
     *
     * @return mixed
     */
    
public function getResource()
    {
        return 
$this->resource;
    }

    
/**
     * Set sql
     *
     * @param string $sql
     * @return Statement
     */
    
public function setSql($sql)
    {
        
$this->sql $sql;
        return 
$this;
    }

    
/**
     * Get sql
     *
     * @return string
     */
    
public function getSql()
    {
        return 
$this->sql;
    }

    
/**
     * @param ParameterContainer $parameterContainer
     * @return Statement
     */
    
public function setParameterContainer(ParameterContainer $parameterContainer)
    {
        
$this->parameterContainer $parameterContainer;
        return 
$this;
    }

    
/**
     * @return ParameterContainer
     */
    
public function getParameterContainer()
    {
        return 
$this->parameterContainer;
    }

    
/**
     * @param string $sql
     * @throws Exception\RuntimeException
     */
    
public function prepare($sql null)
    {
        if (
$this->isPrepared) {
            throw new 
Exception\RuntimeException('This statement has been prepared already');
        }

        if (
$sql == null) {
            
$sql $this->sql;
        }

        
$this->resource $this->pdo->prepare($sql);

        if (
$this->resource === false) {
            
$error $this->pdo->errorInfo();
            throw new 
Exception\RuntimeException($error[2]);
        }

        
$this->isPrepared true;
    }

    
/**
     * @return bool
     */
    
public function isPrepared()
    {
        return 
$this->isPrepared;
    }

    
/**
     * @param mixed $parameters
     * @throws Exception\InvalidQueryException
     * @return Result
     */
    
public function execute($parameters null)
    {
        if (!
$this->isPrepared) {
            
$this->prepare();
        }

        
/** START Standard ParameterContainer Merging Block */
        
if (!$this->parameterContainer instanceof ParameterContainer) {
            if (
$parameters instanceof ParameterContainer) {
                
$this->parameterContainer $parameters;
                
$parameters null;
            } else {
                
$this->parameterContainer = new ParameterContainer();
            }
        }

        if (
is_array($parameters)) {
            
$this->parameterContainer->setFromArray($parameters);
        }

        if (
$this->parameterContainer->count() > 0) {
            
$this->bindParametersFromContainer();
        }
        
/** END Standard ParameterContainer Merging Block */

        
if ($this->profiler) {
            
$this->profiler->profilerStart($this);
        }

        try {
            
$this->resource->execute();
        } catch (\
PDOException $e) {
            if (
$this->profiler) {
                
$this->profiler->profilerFinish();
            }
            throw new 
Exception\InvalidQueryException('Statement could not be executed'null$e);
        }

        if (
$this->profiler) {
            
$this->profiler->profilerFinish();
        }

        
$result $this->driver->createResult($this->resource$this);
        return 
$result;
    }

    
/**
     * Bind parameters from container
     */
    
protected function bindParametersFromContainer()
    {
        if (
$this->parametersBound) {
            return;
        }

        
$parameters $this->parameterContainer->getNamedArray();
        foreach (
$parameters as $name => &$value) {
            
$type = \PDO::PARAM_STR;
            if (
$this->parameterContainer->offsetHasErrata($name)) {
                switch (
$this->parameterContainer->offsetGetErrata($name)) {
                    case 
ParameterContainer::TYPE_INTEGER:
                        
$type = \PDO::PARAM_INT;
                        break;
                    case 
ParameterContainer::TYPE_NULL:
                        
$type = \PDO::PARAM_NULL;
                        break;
                    case 
ParameterContainer::TYPE_LOB:
                        
$type = \PDO::PARAM_LOB;
                        break;
                    case (
is_bool($value)):
                        
$type = \PDO::PARAM_BOOL;
                        break;
                }
            }

            
// parameter is named or positional, value is reference
            
$parameter is_int($name) ? ($name 1) : $name;
            
$this->resource->bindParam($parameter$value$type);
        }

    }

    
/**
     * Perform a deep clone
     * @return Statement A cloned statement
     */
    
public function __clone()
    {
        
$this->isPrepared false;
        
$this->parametersBound false;
        
$this->resource null;
        if (
$this->parameterContainer) {
            
$this->parameterContainer = clone $this->parameterContainer;
        }

    }
}