Workflow/src/nodes/variables/increment.php

<?php
/**
 * File containing the ezcWorkflowNodeVariableIncrement class.
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 *
 * @package Workflow
 * @version //autogen//
 * @license http://www.apache.org/licenses/LICENSE-2.0 Apache License, Version 2.0
 */

/**
 * This node increments a workflow variable by one when executed..
 *
 * <code>
 * <?php
 * $inc = new ezcWorkflowNodeVariableIncrement( 'variable name' );
 * ?>
 * </code>
 *
 * Incoming nodes: 1
 * Outgoing nodes: 1
 *
 * @package Workflow
 * @version //autogen//
 */
class ezcWorkflowNodeVariableIncrement extends ezcWorkflowNodeArithmeticBase
{
    /**
     * The name of the variable to be incremented.
     *
     * @var string
     */
    protected $configuration;

    /**
     * Perform variable modification.
     */
    protected function doExecute()
    {
        $this->variable++;
    }

    /**
     * Generate node configuration from XML representation.
     *
     * @param DOMElement $element
     * @return string
     * @ignore
     */
    public static function configurationFromXML( DOMElement $element )
    {
        return $element->getAttribute( 'variable' );
    }

    /**
     * Generate XML representation of this node's configuration.
     *
     * @param DOMElement $element
     * @ignore
     */
    public function configurationToXML( DOMElement $element )
    {
        $element->setAttribute( 'variable', $this->configuration );
    }

    /**
     * Returns a textual representation of this node.
     *
     * @return string
     * @ignore
     */
    public function __toString()
    {
        return $this->configuration . '++';
    }
}
?>