org.apache.myfaces.flow.ReturnNodeImpl Maven / Gradle / Ivy
/*
* 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 jakarta.el.ValueExpression;
import jakarta.faces.context.FacesContext;
import jakarta.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 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;
}
}