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/*
* 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.jasper.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;
/**
* Wrapper for providing context to ValueExpressions
*
* @author Jacob Hookom
*/
public final class JspValueExpression extends ValueExpression implements
Externalizable {
private ValueExpression target;
private String mark;
public JspValueExpression() {
super();
}
public JspValueExpression(String mark, ValueExpression target) {
this.target = target;
this.mark = mark;
}
public Class<?> getExpectedType() {
return this.target.getExpectedType();
}
public Class<?> getType(ELContext context) throws NullPointerException,
PropertyNotFoundException, ELException {
try {
return this.target.getType(context);
} catch (PropertyNotFoundException e) {
if (e instanceof JspPropertyNotFoundException) throw e;
throw new JspPropertyNotFoundException(this.mark, e);
} catch (ELException e) {
if (e instanceof JspELException) throw e;
throw new JspELException(this.mark, e);
}
}
public boolean isReadOnly(ELContext context) throws NullPointerException,
PropertyNotFoundException, ELException {
try {
return this.target.isReadOnly(context);
} catch (PropertyNotFoundException e) {
if (e instanceof JspPropertyNotFoundException) throw e;
throw new JspPropertyNotFoundException(this.mark, e);
} catch (ELException e) {
if (e instanceof JspELException) throw e;
throw new JspELException(this.mark, e);
}
}
public void setValue(ELContext context, Object value)
throws NullPointerException, PropertyNotFoundException,
PropertyNotWritableException, ELException {
try {
this.target.setValue(context, value);
} catch (PropertyNotWritableException e) {
if (e instanceof JspPropertyNotWritableException) throw e;
throw new JspPropertyNotWritableException(this.mark, e);
} catch (PropertyNotFoundException e) {
if (e instanceof JspPropertyNotFoundException) throw e;
throw new JspPropertyNotFoundException(this.mark, e);
} catch (ELException e) {
if (e instanceof JspELException) throw e;
throw new JspELException(this.mark, e);
}
}
public Object getValue(ELContext context) throws NullPointerException,
PropertyNotFoundException, ELException {
try {
return this.target.getValue(context);
} catch (PropertyNotFoundException e) {
if (e instanceof JspPropertyNotFoundException) throw e;
throw new JspPropertyNotFoundException(this.mark, e);
} catch (ELException e) {
if (e instanceof JspELException) throw e;
throw new JspELException(this.mark, e);
}
}
public boolean equals(Object obj) {
return this.target.equals(obj);
}
public int hashCode() {
return this.target.hashCode();
}
public String getExpressionString() {
return this.target.getExpressionString();
}
public boolean isLiteralText() {
return this.target.isLiteralText();
}
public void writeExternal(ObjectOutput out) throws IOException {
out.writeUTF(this.mark);
out.writeObject(this.target);
}
public void readExternal(ObjectInput in) throws IOException,
ClassNotFoundException {
this.mark = in.readUTF();
this.target = (ValueExpression) in.readObject();
}
}
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