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<?php
/**
* 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 please see
* <http://phing.info>.
*
* @version $Id: e84ada3cdb7a04da60158c7a352fbb06f17f2ca7 $
* @package phing.tasks.ext.pdo
*/
/**
* Base class for classes that split SQL source into separate queries
*
* @author Alexey Borzov <avb@php.net>
* @package phing.tasks.ext.pdo
* @version $Id$
*/
abstract class PDOQuerySplitter
{
/**
* Task that uses the splitter
* @var PDOSQLExecTask
*/
protected $parent;
/**
* Reader with SQL source
* @var BufferedReader
*/
protected $sqlReader;
/**
* Constructor, sets the parent task and reader with SQL source
*
* @param PDOSQLExecTask $parent
* @param Reader $reader
*/
public function __construct(PDOSQLExecTask $parent, Reader $reader)
{
$this->parent = $parent;
$this->sqlReader = new BufferedReader($reader);
}
/**
* Returns next query from SQL source, null if no more queries left
*
* @return string|null
*/
abstract public function nextQuery();
}
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