| /* |
| * 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 org.apache.cocoon.components.expression; |
| |
| import java.util.Iterator; |
| |
| /** |
| * @version $Id$ |
| */ |
| public interface Expression { |
| |
| Object evaluate(ExpressionContext context) |
| throws ExpressionException; |
| |
| Iterator iterate(ExpressionContext context) |
| throws ExpressionException; |
| |
| void assign(ExpressionContext context, Object value) |
| throws ExpressionException; |
| |
| String getExpression(); |
| |
| String getLanguage(); |
| |
| /* |
| * This method is added to handle that JXPath have two access methods |
| * getValue and getNode, where getNode gives direct access to the object |
| * while getValue might do some conversion of the object. I would prefer to |
| * get rid of the getNode method, but have not yet figured out how to get |
| * work in JXTG |
| */ |
| Object getNode(ExpressionContext context) throws ExpressionException; |
| |
| void setProperty(String property, Object value); |
| } |