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<?php /* * $Id: BaseSelector.php 123 2006-09-14 20:19:08Z mrook $ * * 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>. */ require_once 'phing/types/selectors/FileSelector.php'; /** * A convenience base class that you can subclass Selectors from. It * provides some helpful common behaviour. Note that there is no need * for Selectors to inherit from this class, it is only necessary that * they implement FileSelector. * * @author <a href="mailto:bruce@callenish.com">Bruce Atherton</a> * @package phing.types.selectors */ abstract class BaseSelector extends DataType implements FileSelector { private $errmsg = null; /** * Allows all selectors to indicate a setup error. Note that only * the first error message is recorded. * * @param msg The error message any BuildException should throw. */ public function setError($msg) { if ($this->errmsg === null) { $this->errmsg = $msg; } } /** * Returns any error messages that have been set. * * @return the error condition */ public function getError() { return $this->errmsg; } /** * <p>Subclasses can override this method to provide checking of their * state. So long as they call validate() from isSelected(), this will * be called automatically (unless they override validate()).</p> * <p>Implementations should check for incorrect settings and call * setError() as necessary.</p> */ public function verifySettings() { } /** * Subclasses can use this to throw the requisite exception * in isSelected() in the case of an error condition. */ public function validate() { if ($this->getError() === null) { $this->verifySettings(); } if ($this->getError() !== null) { throw new BuildException($this->errmsg); } } }
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