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The private implementation classes of the Apache MyFaces Core JSF-2.0 Implementation
/*
* 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.view.facelets.el;
import java.io.Externalizable;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;
import javax.el.ELContext;
import javax.el.ELException;
import javax.el.PropertyNotFoundException;
import javax.el.PropertyNotWritableException;
import javax.el.ValueExpression;
import javax.faces.FacesWrapper;
import javax.faces.view.Location;
import javax.faces.view.facelets.TagAttribute;
/**
*
*
* @author Jacob Hookom
* @version $Id: TagValueExpression.java,v 1.7 2008/07/13 19:01:42 rlubke Exp $
*/
public class TagValueExpression extends ValueExpression implements Externalizable, FacesWrapper, ContextAware
{
private static final long serialVersionUID = 1L;
private ValueExpression _wrapped;
private Location _location;
private String _qName;
public TagValueExpression()
{
super();
}
public TagValueExpression(TagAttribute tagAttribute, ValueExpression valueExpression)
{
_location = tagAttribute.getLocation();
_qName = tagAttribute.getQName();
_wrapped = valueExpression;
}
public Class getExpectedType()
{
return _wrapped.getExpectedType();
}
public Class getType(ELContext context)
{
try
{
return _wrapped.getType(context);
}
catch (PropertyNotFoundException pnfe)
{
throw new ContextAwarePropertyNotFoundException(getLocation(), getLocalExpressionString(), getQName(), pnfe);
}
catch (ELException e)
{
throw new ContextAwareELException(getLocation(), getLocalExpressionString(), getQName(), e);
}
catch (Exception e)
{
throw new ContextAwareELException(getLocation(), getLocalExpressionString(), getQName(), e);
}
}
public Object getValue(ELContext context)
{
try
{
return _wrapped.getValue(context);
}
catch (PropertyNotFoundException pnfe)
{
throw new ContextAwarePropertyNotFoundException(getLocation(), getLocalExpressionString(), getQName(), pnfe);
}
catch (ELException e)
{
throw new ContextAwareELException(getLocation(), getLocalExpressionString(), getQName(), e);
}
catch (Exception e)
{
throw new ContextAwareELException(getLocation(), getLocalExpressionString(), getQName(), e);
}
}
private String getLocalExpressionString()
{
String expressionString = null;
try
{
expressionString = getExpressionString();
}
catch (Throwable t)
{
//swallo it because it is not important
}
return expressionString;
}
public boolean isReadOnly(ELContext context)
{
try
{
return _wrapped.isReadOnly(context);
}
catch (PropertyNotFoundException pnfe)
{
throw new ContextAwarePropertyNotFoundException(getLocation(), getLocalExpressionString(), getQName(), pnfe);
}
catch (ELException e)
{
throw new ContextAwareELException(getLocation(), getLocalExpressionString(), getQName(), e);
}
catch (Exception e)
{
throw new ContextAwareELException(getLocation(), getLocalExpressionString(), getQName(), e);
}
}
public void setValue(ELContext context, Object value)
{
try
{
_wrapped.setValue(context, value);
}
catch (PropertyNotFoundException pnfe)
{
throw new ContextAwarePropertyNotFoundException(getLocation(), getLocalExpressionString(), getQName(), pnfe);
}
catch (PropertyNotWritableException pnwe)
{
throw new ContextAwarePropertyNotWritableException(getLocation(), getLocalExpressionString(), getQName(), pnwe);
}
catch (ELException e)
{
throw new ContextAwareELException(getLocation(), getLocalExpressionString(), getQName(), e);
}
catch (Exception e)
{
throw new ContextAwareELException(getLocation(), getLocalExpressionString(), getQName(), e);
}
}
public boolean equals(Object obj)
{
return _wrapped.equals(obj);
}
public String getExpressionString()
{
return _wrapped.getExpressionString();
}
public int hashCode()
{
return _wrapped.hashCode();
}
public boolean isLiteralText()
{
return _wrapped.isLiteralText();
}
public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException
{
_wrapped = (ValueExpression) in.readObject();
_location = (Location) in.readObject();
_qName = in.readUTF();
}
public void writeExternal(ObjectOutput out) throws IOException
{
out.writeObject(_wrapped);
out.writeObject(_location);
out.writeUTF(_qName);
}
public String toString()
{
return _location + ": " + _wrapped;
}
public ValueExpression getWrapped()
{
return _wrapped;
}
public Location getLocation() {
return _location;
}
public String getQName() {
return _qName;
}
}