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Tomcat example source code file (JspValueExpression.java)

This example Tomcat source code file (JspValueExpression.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Tomcat tags/keywords

elexception, elexception, io, ioexception, jspelexception, jsppropertynotfoundexception, jspvalueexpression, nullpointerexception, nullpointerexception, object, propertynotfoundexception, propertynotfoundexception, propertynotwritableexception, valueexpression, valueexpression

The Tomcat JspValueExpression.java source code

/*
 * 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();
    }
}

Other Tomcat examples (source code examples)

Here is a short list of links related to this Tomcat JspValueExpression.java source code file:

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