Subversion-Projekte lars-tiefland.php_share

<?php

/*

 *  $Id: Statement.php 1532 2007-05-31 17:45:07Z zYne $

 *

 * 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 COPYRIGHT

 * OWNER 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.

 *

 * This software consists of voluntary contributions made by many individuals

 * and is licensed under the LGPL. For more information, see

 * <http://www.doctrine-project.org>.

 */

/**

 * Doctrine_Connection_Statement

 *

 * @package     Doctrine

 * @subpackage  Connection

 * @author      Konsta Vesterinen <kvesteri@cc.hut.fi>

 * @license     http://www.opensource.org/licenses/lgpl-license.php LGPL

 * @link        www.doctrine-project.org

 * @since       1.0

 * @version     $Revision: 1532 $

 */

class Doctrine_Connection_Statement implements Doctrine_Adapter_Statement_Interface

{

    /**

     * @var Doctrine_Connection $conn       Doctrine_Connection object, every connection

     *                                      statement holds an instance of Doctrine_Connection

     */

    protected $_conn;

    /**

     * @var mixed $_stmt                    PDOStatement object, boolean false or Doctrine_Adapter_Statement object

     */

    protected $_stmt;

    /**

     * constructor

     *

     * @param Doctrine_Connection $conn     Doctrine_Connection object, every connection

     *                                      statement holds an instance of Doctrine_Connection

     * @param mixed $stmt

     */

    public function __construct(Doctrine_Connection $conn, $stmt)

    {

        $this->_conn = $conn;

        $this->_stmt = $stmt;

        if ($stmt === false) {

            throw new Doctrine_Exception('Unknown statement object given.');

        }

    }

    /**

     * getConnection

     * returns the connection object this statement uses

     *

     * @return Doctrine_Connection

     */

    public function getConnection()

    {

        return $this->_conn;

    }

    public function getStatement()

    {

        return $this->_stmt;

    }

    public function getQuery()

    {

        return $this->_stmt->queryString;

    }

    /**

     * bindColumn

     * Bind a column to a PHP variable

     *

     * @param mixed $column         Number of the column (1-indexed) or name of the column in the result set.

     *                              If using the column name, be aware that the name should match

     *                              the case of the column, as returned by the driver.

     *

     * @param string $param         Name of the PHP variable to which the column will be bound.

     * @param integer $type         Data type of the parameter, specified by the Doctrine_Core::PARAM_* constants.

     * @return boolean              Returns TRUE on success or FALSE on failure

     */

    public function bindColumn($column, $param, $type = null)

    {

        if ($type === null) {

            return $this->_stmt->bindColumn($column, $param);

        } else {

            return $this->_stmt->bindColumn($column, $param, $type);

        }

    }

    /**

     * bindValue

     * Binds a value to a corresponding named or question mark

     * placeholder in the SQL statement that was use to prepare the statement.

     *

     * @param mixed $param          Parameter identifier. For a prepared statement using named placeholders,

     *                              this will be a parameter name of the form :name. For a prepared statement

     *                              using question mark placeholders, this will be the 1-indexed position of the parameter

     *

     * @param mixed $value          The value to bind to the parameter.

     * @param integer $type         Explicit data type for the parameter using the Doctrine_Core::PARAM_* constants.

     *

     * @return boolean              Returns TRUE on success or FALSE on failure.

     */

    public function bindValue($param, $value, $type = null)

    {

        if ($type === null) {

            return $this->_stmt->bindValue($param, $value);

        } else {

            return $this->_stmt->bindValue($param, $value, $type);

        }

    }

    /**

     * bindParam

     * Binds a PHP variable to a corresponding named or question mark placeholder in the

     * SQL statement that was use to prepare the statement. Unlike Doctrine_Adapter_Statement_Interface->bindValue(),

     * the variable is bound as a reference and will only be evaluated at the time

     * that Doctrine_Adapter_Statement_Interface->execute() is called.

     *

     * Most parameters are input parameters, that is, parameters that are

     * used in a read-only fashion to build up the query. Some drivers support the invocation

     * of stored procedures that return data as output parameters, and some also as input/output

     * parameters that both send in data and are updated to receive it.

     *

     * @param mixed $param          Parameter identifier. For a prepared statement using named placeholders,

     *                              this will be a parameter name of the form :name. For a prepared statement

     *                              using question mark placeholders, this will be the 1-indexed position of the parameter

     *

     * @param mixed $variable       Name of the PHP variable to bind to the SQL statement parameter.

     *

     * @param integer $type         Explicit data type for the parameter using the Doctrine_Core::PARAM_* constants. To return

     *                              an INOUT parameter from a stored procedure, use the bitwise OR operator to set the

     *                              Doctrine_Core::PARAM_INPUT_OUTPUT bits for the data_type parameter.

     *

     * @param integer $length       Length of the data type. To indicate that a parameter is an OUT parameter

     *                              from a stored procedure, you must explicitly set the length.

     * @param mixed $driverOptions

     * @return boolean              Returns TRUE on success or FALSE on failure.

     */

    public function bindParam($column, &$variable, $type = null, $length = null, $driverOptions = array())

    {

        if ($type === null) {

            return $this->_stmt->bindParam($column, $variable);

        } else {

            return $this->_stmt->bindParam($column, $variable, $type, $length, $driverOptions);

        }

    }

    /**

     * closeCursor

     * Closes the cursor, enabling the statement to be executed again.

     *

     * @return boolean              Returns TRUE on success or FALSE on failure.

     */

    public function closeCursor()

    {

        return $this->_stmt->closeCursor();

    }

    /**

     * columnCount

     * Returns the number of columns in the result set

     *

     * @return integer              Returns the number of columns in the result set represented

     *                              by the Doctrine_Adapter_Statement_Interface object. If there is no result set,

     *                              this method should return 0.

     */

    public function columnCount()

    {

        return $this->_stmt->columnCount();

    }

    /**

     * errorCode

     * Fetch the SQLSTATE associated with the last operation on the statement handle

     *

     * @see Doctrine_Adapter_Interface::errorCode()

     * @return string       error code string

     */

    public function errorCode()

    {

        return $this->_stmt->errorCode();

    }

    /**

     * errorInfo

     * Fetch extended error information associated with the last operation on the statement handle

     *

     * @see Doctrine_Adapter_Interface::errorInfo()

     * @return array        error info array

     */

    public function errorInfo()

    {

        return $this->_stmt->errorInfo();

    }

    /**

     * execute

     * Executes a prepared statement

     *

     * If the prepared statement included parameter markers, you must either:

     * call PDOStatement->bindParam() to bind PHP variables to the parameter markers:

     * bound variables pass their value as input and receive the output value,

     * if any, of their associated parameter markers or pass an array of input-only

     * parameter values

     *

     *

     * @param array $params             An array of values with as many elements as there are

     *                                  bound parameters in the SQL statement being executed.

     * @return boolean                  Returns TRUE on success or FALSE on failure.

     */

    public function execute($params = null)

    {

        try {

            $event = new Doctrine_Event($this, Doctrine_Event::STMT_EXECUTE, $this->getQuery(), $params);

            $this->_conn->getListener()->preStmtExecute($event);

            $result = true;

            if ( ! $event->skipOperation) {

                if ($this->_conn->getAttribute(Doctrine_Core::ATTR_PORTABILITY) & Doctrine_Core::PORTABILITY_EMPTY_TO_NULL) {

                    foreach ($params as $key => $value) {

                        if ($value === '') {

                            $params[$key] = null;

                        }

                    }

                }

                if ($params) {

                    $pos = 0;

                    foreach ($params as $key => $value) {

                        $pos++;

                        $param = is_numeric($key) ?  $pos : $key;

                        if (is_resource($value)) {

                            $this->_stmt->bindParam($param, $params[$key], Doctrine_Core::PARAM_LOB);

                        } else {

                            $this->_stmt->bindParam($param, $params[$key]);

                        }

                    }

                }

                $result = $this->_stmt->execute();

                $this->_conn->incrementQueryCount();

            }

            $this->_conn->getListener()->postStmtExecute($event);

            return $result;

        } catch (PDOException $e) {

        } catch (Doctrine_Adapter_Exception $e) {

        }

        $this->_conn->rethrowException($e, $this);

        return false;

    }

    /**

     * fetch

     *

     * @see Doctrine_Core::FETCH_* constants

     * @param integer $fetchStyle           Controls how the next row will be returned to the caller.

     *                                      This value must be one of the Doctrine_Core::FETCH_* constants,

     *                                      defaulting to Doctrine_Core::FETCH_BOTH

     *

     * @param integer $cursorOrientation    For a PDOStatement object representing a scrollable cursor,

     *                                      this value determines which row will be returned to the caller.

     *                                      This value must be one of the Doctrine_Core::FETCH_ORI_* constants, defaulting to

     *                                      Doctrine_Core::FETCH_ORI_NEXT. To request a scrollable cursor for your

     *                                      Doctrine_Adapter_Statement_Interface object,

     *                                      you must set the Doctrine_Core::ATTR_CURSOR attribute to Doctrine_Core::CURSOR_SCROLL when you

     *                                      prepare the SQL statement with Doctrine_Adapter_Interface->prepare().

     *

     * @param integer $cursorOffset         For a Doctrine_Adapter_Statement_Interface object representing a scrollable cursor for which the

     *                                      $cursorOrientation parameter is set to Doctrine_Core::FETCH_ORI_ABS, this value specifies

     *                                      the absolute number of the row in the result set that shall be fetched.

     *

     *                                      For a Doctrine_Adapter_Statement_Interface object representing a scrollable cursor for

     *                                      which the $cursorOrientation parameter is set to Doctrine_Core::FETCH_ORI_REL, this value

     *                                      specifies the row to fetch relative to the cursor position before

     *                                      Doctrine_Adapter_Statement_Interface->fetch() was called.

     *

     * @return mixed

     */

    public function fetch($fetchMode = Doctrine_Core::FETCH_BOTH,

                          $cursorOrientation = Doctrine_Core::FETCH_ORI_NEXT,

                          $cursorOffset = null)

    {

        $event = new Doctrine_Event($this, Doctrine_Event::STMT_FETCH, $this->getQuery());

        $event->fetchMode = $fetchMode;

        $event->cursorOrientation = $cursorOrientation;

        $event->cursorOffset = $cursorOffset;

        $data = $this->_conn->getListener()->preFetch($event);

        if ( ! $event->skipOperation) {

            $data = $this->_stmt->fetch($fetchMode, $cursorOrientation, $cursorOffset);

        }

        $this->_conn->getListener()->postFetch($event);

        return $data;

    }

    /**

     * fetchAll

     * Returns an array containing all of the result set rows

     *

     * @param integer $fetchMode            Controls how the next row will be returned to the caller.

     *                                      This value must be one of the Doctrine_Core::FETCH_* constants,

     *                                      defaulting to Doctrine_Core::FETCH_BOTH

     *

     * @param integer $columnIndex          Returns the indicated 0-indexed column when the value of $fetchStyle is

     *                                      Doctrine_Core::FETCH_COLUMN. Defaults to 0.

     *

     * @return array

     */

    public function fetchAll($fetchMode = Doctrine_Core::FETCH_BOTH,

                             $columnIndex = null)

    {

        $event = new Doctrine_Event($this, Doctrine_Event::STMT_FETCHALL, $this->getQuery());

        $event->fetchMode = $fetchMode;

        $event->columnIndex = $columnIndex;

        $this->_conn->getListener()->preFetchAll($event);

        if ( ! $event->skipOperation) {

            if ($columnIndex !== null) {

                $data = $this->_stmt->fetchAll($fetchMode, $columnIndex);

            } else {

                $data = $this->_stmt->fetchAll($fetchMode);

            }

            $event->data = $data;

        }

        $this->_conn->getListener()->postFetchAll($event);

        return $data;

    }

    /**

     * fetchColumn

     * Returns a single column from the next row of a

     * result set or FALSE if there are no more rows.

     *

     * @param integer $columnIndex          0-indexed number of the column you wish to retrieve from the row. If no

     *                                      value is supplied, Doctrine_Adapter_Statement_Interface->fetchColumn()

     *                                      fetches the first column.

     *

     * @return string                       returns a single column in the next row of a result set.

     */

    public function fetchColumn($columnIndex = 0)

    {

        return $this->_stmt->fetchColumn($columnIndex);

    }

    /**

     * fetchObject

     * Fetches the next row and returns it as an object.

     *

     * Fetches the next row and returns it as an object. This function is an alternative to

     * Doctrine_Adapter_Statement_Interface->fetch() with Doctrine_Core::FETCH_CLASS or Doctrine_Core::FETCH_OBJ style.

     *

     * @param string $className             Name of the created class, defaults to stdClass.

     * @param array $args                   Elements of this array are passed to the constructor.

     *

     * @return mixed                        an instance of the required class with property names that correspond

     *                                      to the column names or FALSE in case of an error.

     */

    public function fetchObject($className = 'stdClass', $args = array())

    {

        return $this->_stmt->fetchObject($className, $args);

    }

    /**

     * getAttribute

     * Retrieve a statement attribute

     *

     * @param integer $attribute

     * @see Doctrine_Core::ATTR_* constants

     * @return mixed                        the attribute value

     */

    public function getAttribute($attribute)

    {

        return $this->_stmt->getAttribute($attribute);

    }

    /**

     * getColumnMeta

     * Returns metadata for a column in a result set

     *

     * @param integer $column               The 0-indexed column in the result set.

     *

     * @return array                        Associative meta data array with the following structure:

     *

     *          native_type                 The PHP native type used to represent the column value.

     *          driver:decl_                type The SQL type used to represent the column value in the database. If the column in the result set is the result of a function, this value is not returned by PDOStatement->getColumnMeta().

     *          flags                       Any flags set for this column.

     *          name                        The name of this column as returned by the database.

     *          len                         The length of this column. Normally -1 for types other than floating point decimals.

     *          precision                   The numeric precision of this column. Normally 0 for types other than floating point decimals.

     *          pdo_type                    The type of this column as represented by the PDO::PARAM_* constants.

     */

    public function getColumnMeta($column)

    {

        return $this->_stmt->getColumnMeta($column);

    }

    /**

     * nextRowset

     * Advances to the next rowset in a multi-rowset statement handle

     *

     * Some database servers support stored procedures that return more than one rowset

     * (also known as a result set). The nextRowset() method enables you to access the second

     * and subsequent rowsets associated with a PDOStatement object. Each rowset can have a

     * different set of columns from the preceding rowset.

     *

     * @return boolean                      Returns TRUE on success or FALSE on failure.

     */

    public function nextRowset()

    {

        return $this->_stmt->nextRowset();

    }

    /**

     * rowCount

     * rowCount() returns the number of rows affected by the last DELETE, INSERT, or UPDATE statement

     * executed by the corresponding object.

     *

     * If the last SQL statement executed by the associated Statement object was a SELECT statement,

     * some databases may return the number of rows returned by that statement. However,

     * this behaviour is not guaranteed for all databases and should not be

     * relied on for portable applications.

     *

     * @return integer                      Returns the number of rows.

     */

    public function rowCount()

    {

        return $this->_stmt->rowCount();

    }

    /**

     * setAttribute

     * Set a statement attribute

     *

     * @param integer $attribute

     * @param mixed $value                  the value of given attribute

     * @return boolean                      Returns TRUE on success or FALSE on failure.

     */

    public function setAttribute($attribute, $value)

    {

        return $this->_stmt->setAttribute($attribute, $value);

    }

    /**

     * setFetchMode

     * Set the default fetch mode for this statement

     *

     * @param integer $mode                 The fetch mode must be one of the Doctrine_Core::FETCH_* constants.

     * @return boolean                      Returns 1 on success or FALSE on failure.

     */

    public function setFetchMode($mode, $arg1 = null, $arg2 = null)

    {

        return $this->_stmt->setFetchMode($mode, $arg1, $arg2);

    }

}