| <?php |
| /** |
| * File containing the ezcWorkflowNodeArithmeticBase 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// |
| * @copyright Copyright (C) 2005-2010 eZ Systems AS. All rights reserved. |
| * @license http://www.apache.org/licenses/LICENSE-2.0 Apache License, Version 2.0 |
| */ |
| |
| /** |
| * Base class for nodes that implement simple integer arithmetic. |
| * |
| * This class takes care of the configuration and setting and getting of |
| * data. The data to manipulate is put into the $variable member. The manipulating |
| * parameter is put into the member $value. |
| * |
| * Implementors must implement the method doExecute() and put the result of the |
| * computation in $value member variable. |
| * |
| * @package Workflow |
| * @version //autogen// |
| */ |
| abstract class ezcWorkflowNodeArithmeticBase extends ezcWorkflowNode |
| { |
| /** |
| * Contains the data to manipulate. |
| * |
| * @var mixed |
| */ |
| protected $variable; |
| |
| /** |
| * Contains the operand (if any). |
| * |
| * @var mixed |
| */ |
| protected $operand = null; |
| |
| /** |
| * Constructs a new action node with the configuration $configuration. |
| * |
| * Configuration format |
| * <ul> |
| * <li><b>String:</b> The name of the workflow variable to operate on.</li> |
| * |
| * <li><b>Array:</b> |
| * <ul> |
| * <li><i>name:</i> The name of the workflow variable to operate on.</li> |
| * <li><i>operand:</i> Name of workflow variable or a numerical value. |
| * Not used by implementations without an operand.</li> |
| * </ul> |
| * </li> |
| * </ul> |
| * |
| * @param mixed $configuration |
| * @throws ezcWorkflowDefinitionStorageException |
| */ |
| public function __construct( $configuration ) |
| { |
| parent::__construct( $configuration ); |
| } |
| |
| /** |
| * Executes this node and returns true. |
| * |
| * Expects the configuration parameters 'name' the name of the workflow |
| * variable to work on and the parameter 'value' the value to operate with |
| * or the name of the workflow variable containing the value. |
| * |
| * @param ezcWorkflowExecution $execution |
| * @return boolean |
| * @ignore |
| */ |
| public function execute( ezcWorkflowExecution $execution ) |
| { |
| if ( is_array( $this->configuration ) ) |
| { |
| $variableName = $this->configuration['name']; |
| } |
| else |
| { |
| $variableName = $this->configuration; |
| } |
| |
| $this->variable = $execution->getVariable( $variableName ); |
| |
| if ( !is_numeric( $this->variable ) ) |
| { |
| throw new ezcWorkflowExecutionException( |
| sprintf( |
| 'Variable "%s" is not a number.', |
| $variableName |
| ) |
| ); |
| } |
| |
| if ( is_numeric( $this->configuration['operand'] ) ) |
| { |
| $this->operand = $this->configuration['operand']; |
| } |
| |
| else if ( is_string( $this->configuration['operand'] ) ) |
| { |
| try |
| { |
| $operand = $execution->getVariable( $this->configuration['operand'] ); |
| |
| if ( is_numeric( $operand ) ) |
| { |
| $this->operand = $operand; |
| } |
| } |
| catch ( ezcWorkflowExecutionException $e ) |
| { |
| } |
| } |
| |
| if ( $this->operand === null ) |
| { |
| throw new ezcWorkflowExecutionException( 'Illegal operand.' ); |
| } |
| |
| $this->doExecute(); |
| |
| $execution->setVariable( $variableName, $this->variable ); |
| $this->activateNode( $execution, $this->outNodes[0] ); |
| |
| return parent::execute( $execution ); |
| } |
| |
| /** |
| * Implementors should perform the variable computation in this method. |
| * |
| * doExecute() is called automatically by execute(). |
| */ |
| abstract protected function doExecute(); |
| } |
| ?> |