/* | |
* 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.el; | |
import java.util.Locale; | |
import javax.el.ELContext; | |
import javax.el.ELResolver; | |
import javax.el.FunctionMapper; | |
import javax.el.VariableMapper; | |
/** | |
* This ELContext is used to hook into the EL handling, by decorating the | |
* ELResolver chain with a custom ELResolver. | |
*/ | |
public class ELContextDecorator extends ELContext | |
{ | |
private final ELContext ctx; | |
private final ELResolver interceptingResolver; | |
/** | |
* Only used by ValueExpressionResolver. | |
* | |
* @param elContext The standard ELContext. All method calls, except getELResolver, are delegated to it. | |
* @param interceptingResolver The ELResolver to be returned by getELResolver. | |
*/ | |
public ELContextDecorator(final ELContext elContext, final ELResolver interceptingResolver) | |
{ | |
this.ctx = elContext; | |
this.interceptingResolver = interceptingResolver; | |
} | |
/** | |
* This is the important one, it returns the passed ELResolver. | |
* @return The ELResolver passed into the constructor. | |
*/ | |
@Override | |
public ELResolver getELResolver() | |
{ | |
return interceptingResolver; | |
} | |
// ############################ Standard delegating implementations ############################ | |
@Override | |
public FunctionMapper getFunctionMapper() | |
{ | |
return ctx.getFunctionMapper(); | |
} | |
@Override | |
public VariableMapper getVariableMapper() | |
{ | |
return ctx.getVariableMapper(); | |
} | |
@Override | |
public void setPropertyResolved(final boolean resolved) | |
{ | |
ctx.setPropertyResolved(resolved); | |
} | |
@Override | |
public boolean isPropertyResolved() | |
{ | |
return ctx.isPropertyResolved(); | |
} | |
@Override | |
public void putContext(final Class key, Object contextObject) | |
{ | |
ctx.putContext(key, contextObject); | |
} | |
@Override | |
public Object getContext(final Class key) | |
{ | |
return ctx.getContext(key); | |
} | |
@Override | |
public Locale getLocale() | |
{ | |
return ctx.getLocale(); | |
} | |
@Override | |
public void setLocale(final Locale locale) | |
{ | |
ctx.setLocale(locale); | |
} | |
} |