| /* |
| * 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.myfaces.flow; |
| |
| import javax.el.ValueExpression; |
| import javax.faces.context.FacesContext; |
| import javax.faces.flow.ReturnNode; |
| |
| /** |
| * |
| * @since 2.2 |
| * @author Leonardo Uribe |
| */ |
| public class ReturnNodeImpl extends ReturnNode implements Freezable |
| { |
| private String _fromOutcome; |
| private ValueExpression _fromOutcomeEL; |
| private String _id; |
| |
| private boolean _initialized; |
| |
| public ReturnNodeImpl(String returnNodeId) |
| { |
| this._id = returnNodeId; |
| } |
| |
| @Override |
| public String getFromOutcome(FacesContext context) |
| { |
| if (_fromOutcomeEL != null) |
| { |
| return (String) _fromOutcomeEL.getValue(context.getELContext()); |
| } |
| return _fromOutcome; |
| } |
| |
| @Override |
| public String getId() |
| { |
| return _id; |
| } |
| |
| @Override |
| public void freeze() |
| { |
| _initialized = true; |
| } |
| |
| private void checkInitialized() throws IllegalStateException |
| { |
| if (_initialized) |
| { |
| throw new IllegalStateException("Flow is inmutable once initialized"); |
| } |
| } |
| |
| public void setFromOutcome(String fromOutcome) |
| { |
| checkInitialized(); |
| this._fromOutcome = fromOutcome; |
| this._fromOutcomeEL = null; |
| } |
| |
| public void setFromOutcome(ValueExpression fromOutcome) |
| { |
| checkInitialized(); |
| this._fromOutcomeEL = fromOutcome; |
| this._fromOutcome = null; |
| } |
| |
| public void setId(String id) |
| { |
| checkInitialized(); |
| this._id = id; |
| } |
| } |