net.derquinse.common.collect.ForwardingHierarchy.java Source code

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Here is the source code for net.derquinse.common.collect.ForwardingHierarchy.java

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/*
 * Copyright 2008-2010 the original author or authors.
 *
 * 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 net.derquinse.common.collect;

import java.util.List;
import java.util.Set;

import javax.annotation.Nullable;

import com.google.common.collect.ForwardingCollection;

/**
 * A hierarchy that forward its method calls to a delegated hierarchy.
 * @author Andres Rodriguez
 * @param <E> Type of the elements in the hierarchy.
 */
public abstract class ForwardingHierarchy<E> extends ForwardingCollection<E> implements Hierarchy<E> {
    public ForwardingHierarchy() {
    }

    @Override
    protected abstract Hierarchy<E> delegate();

    /*
     * (non-Javadoc)
     * @see net.derquinse.common.collect.Hierarchy#elementSet()()
     */
    public Set<E> elementSet() {
        return delegate().elementSet();
    }

    /*
     * (non-Javadoc)
     * @see net.derquinse.common.collect.Hierarchy#getChildren(java.lang.Object)
     */
    public List<E> getChildren(E element) {
        return delegate().getChildren(element);
    }

    /*
     * (non-Javadoc)
     * @see net.derquinse.common.collect.Hierarchy#getFirstLevel()
     */
    public List<E> getFirstLevel() {
        return delegate().getFirstLevel();
    }

    /*
     * (non-Javadoc)
     * @see net.derquinse.common.collect.Hierarchy#getParent(java.lang.Object)
     */
    public E getParent(E element) {
        return delegate().getParent(element);
    }

    /*
     * (non-Javadoc)
     * @see net.derquinse.common.collect.Hierarchy#getCoordinates(java.lang.Object)
     */
    public HierarchyCoordinates<E> getCoordinates(E element) {
        return delegate().getCoordinates(element);
    };

    /*
     * (non-Javadoc)
     * @see net.derquinse.common.collect.Hierarchy#getRoot()
     */
    public E getRoot() {
        return delegate().getRoot();
    }

    /*
     * (non-Javadoc)
     * @see net.derquinse.common.collect.Hierarchy#isRooted()
     */
    public boolean isRooted() {
        return delegate().isRooted();
    }

    /*
     * (non-Javadoc)
     * @see net.derquinse.common.collect.Hierarchy#getAncestors(java.lang.Object)
     */
    public Iterable<E> getAncestors(E element) {
        return delegate().getAncestors(element);
    }

    /*
     * (non-Javadoc)
     * @seenet.derquinse.common.collect.Hierarchy#visitDepthFirst(net.derquinse.common.collect.
     * HierarchyVisitor)
     */
    public void visitDepthFirst(HierarchyVisitor<? super E> visitor) {
        delegate().visitDepthFirst(visitor);
    }

    /*
     * (non-Javadoc)
     * @seenet.derquinse.common.collect.Hierarchy#visitDepthFirst(net.derquinse.common.collect.
     * HierarchyVisitor, java.lang.Object, boolean)
     */
    public void visitDepthFirst(net.derquinse.common.collect.HierarchyVisitor<? super E> visitor, E element,
            boolean includeStarting) {
        delegate().visitDepthFirst(visitor, element, includeStarting);
    };

    /*
     * (non-Javadoc)
     * @see java.lang.Object#equals(java.lang.Object)
     */
    @Override
    public boolean equals(@Nullable Object object) {
        return object == this || delegate().equals(object);
    }

    /*
     * (non-Javadoc)
     * @see java.lang.Object#hashCode()
     */
    @Override
    public int hashCode() {
        return delegate().hashCode();
    }

}