IterationStatusExpression.java

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 * Copyright 2005-2007 The Apache Software Foundation
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 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
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 *     http://www.apache.org/licenses/LICENSE-2.0
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package com.sun.faces.facelets.tag.jstl.core;

import com.sun.faces.facelets.tag.IterationStatus;

import javax.el.ELContext;
import javax.el.ValueExpression;

/**
 * @author Jacob Hookom
 * @version $Id$
 */
public final class IterationStatusExpression extends ValueExpression {

    /**
     * 
     */
    private static final long serialVersionUID = 1L;

    private final IterationStatus status;

    /**
     * 
     */
    public IterationStatusExpression(IterationStatus status) {
        this.status = status;
    }

    /*
     * (non-Javadoc)
     * 
     * @see javax.el.ValueExpression#getValue(javax.el.ELContext)
     */
    @Override
    public Object getValue(ELContext context) {
        return this.status;
    }

    /*
     * (non-Javadoc)
     * 
     * @see javax.el.ValueExpression#setValue(javax.el.ELContext,
     *      java.lang.Object)
     */
    @Override
    public void setValue(ELContext context, Object value) {
        throw new UnsupportedOperationException("Cannot set IterationStatus");
    }

    /*
     * (non-Javadoc)
     * 
     * @see javax.el.ValueExpression#isReadOnly(javax.el.ELContext)
     */
    @Override
    public boolean isReadOnly(ELContext context) {
        return true;
    }

    /*
     * (non-Javadoc)
     * 
     * @see javax.el.ValueExpression#getType(javax.el.ELContext)
     */
    @Override
    public Class getType(ELContext context) {
        return IterationStatus.class;
    }

    /*
     * (non-Javadoc)
     * 
     * @see javax.el.ValueExpression#getExpectedType()
     */
    @Override
    public Class getExpectedType() {
        return IterationStatus.class;
    }

    /*
     * (non-Javadoc)
     * 
     * @see javax.el.Expression#getExpressionString()
     */
    @Override
    public String getExpressionString() {
        return this.toString();
    }

    @Override
    public boolean equals(Object obj) {
        if (obj == null) {
            return false;
        }
        if (getClass() != obj.getClass()) {
            return false;
        }
        final IterationStatusExpression other = (IterationStatusExpression) obj;
        if (this.status != other.status && (this.status == null || !this.status.equals(other.status))) {
            return false;
        }
        return true;
    }
    
    /*
     * (non-Javadoc)
     * 
     * @see javax.el.Expression#hashCode()
     */
    @Override
    public int hashCode() {
        return this.status.hashCode();
    }

    /*
     * (non-Javadoc)
     * 
     * @see javax.el.Expression#isLiteralText()
     */
    @Override
    public boolean isLiteralText() {
        return true;
    }

    @Override
    public String toString() {
        return this.status.toString();
    }

}