org.databene.commons.visitor.WrapperElement Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of databene-commons Show documentation

'databene commons' is an open source Java library by Volker Bergmann. It provides extensions to the Java core library by utility classes, abstract concepts and concrete implementations.

The newest version!

/*
 * Copyright (C) 2004-2015 Volker Bergmann ([email protected]).
 * All rights reserved.
 *
 * Licensed 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.databene.commons.visitor;

import org.databene.commons.Visitor;

/**
 * Element implementation that serves as proxy for another Element.
 * Created: 04.02.2007 08:17:20
 * @param  The type of the wrapped element
 * @author Volker Bergmann
 */
public abstract class WrapperElement extends AbstractElement {

    protected E wrappedObject;

    protected WrapperElement(E wrappedObject) {
        this.wrappedObject = wrappedObject;
    }

    public E getWrappedObject() {
        return wrappedObject;
    }

    @Override
    protected void acceptImpl(Visitor visitor) {
        visitor.visit(wrappedObject);
    }

    @SuppressWarnings("rawtypes")
	@Override
    public boolean equals(Object o) {
        if (this == o)
            return true;
        if (o == null || getClass() != o.getClass())
            return false;
		final WrapperElement that = (WrapperElement) o;
        return !(wrappedObject != null ? !wrappedObject.equals(that.wrappedObject) : that.wrappedObject != null);
    }

    @Override
    public int hashCode() {
        return (wrappedObject != null ? wrappedObject.hashCode() : 0);
    }

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