Hibernate example source code file (CollectionProxy.java)

This example Hibernate source code file (CollectionProxy.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 - Hibernate tags/keywords

collection, collection, collectionproxy, collectionproxy, equalswhichdoesntcheckparameterclass, io, iterator, object, override, override, serializable, suppresswarnings, t, util, v, v

The Hibernate CollectionProxy.java source code

/*
 * Hibernate, Relational Persistence for Idiomatic Java
 *
 * Copyright (c) 2008, Red Hat Middleware LLC or third-party contributors as
 * indicated by the @author tags or express copyright attribution
 * statements applied by the authors.  All third-party contributions are
 * distributed under license by Red Hat Middleware LLC.
 *
 * This copyrighted material is made available to anyone wishing to use, modify,
 * copy, or redistribute it subject to the terms and conditions of the GNU
 * Lesser General Public License, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License
 * for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this distribution; if not, write to:
 * Free Software Foundation, Inc.
 * 51 Franklin Street, Fifth Floor
 * Boston, MA  02110-1301  USA
 */
package org.hibernate.envers.entities.mapper.relation.lazy.proxy;
import java.io.Serializable;
import java.util.Collection;
import java.util.Iterator;
import org.hibernate.envers.entities.mapper.relation.lazy.initializor.Initializor;

/**
 * @author Adam Warski (adam at warski dot org)
 */
public abstract class CollectionProxy<U, T extends Collection implements Collection, Serializable {
	private static final long serialVersionUID = 8698249863871832402L;

	private transient org.hibernate.envers.entities.mapper.relation.lazy.initializor.Initializor<T> initializor;
    protected T delegate;

    protected CollectionProxy() {
    }

    public CollectionProxy(Initializor<T> initializor) {
        this.initializor = initializor;
    }

    protected void checkInit() {
        if (delegate == null) {
            delegate = initializor.initialize();
        }
    }

    public int size() {
        checkInit();
        return delegate.size();
    }

    public boolean isEmpty() {
        checkInit();
        return delegate.isEmpty();
    }

    public boolean contains(Object o) {
        checkInit();
        return delegate.contains(o);
    }

    public Iterator<U> iterator() {
        checkInit();
        return delegate.iterator();
    }

    public Object[] toArray() {
        checkInit();
        return delegate.toArray();
    }

    public <V> V[] toArray(V[] a) {
        checkInit();
        return delegate.toArray(a);
    }

    public boolean add(U o) {
        checkInit();
        return delegate.add(o);
    }

    public boolean remove(Object o) {
        checkInit();
        return delegate.remove(o);
    }

    public boolean containsAll(Collection<?> c) {
        checkInit();
        return delegate.containsAll(c);
    }

    public boolean addAll(Collection<? extends U> c) {
        checkInit();
        return delegate.addAll(c);
    }

    public boolean removeAll(Collection<?> c) {
        checkInit();
        return delegate.removeAll(c);
    }

    public boolean retainAll(Collection<?> c) {
        checkInit();
        return delegate.retainAll(c);
    }

    public void clear() {
        checkInit();
        delegate.clear();
    }

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

    @SuppressWarnings({"EqualsWhichDoesntCheckParameterClass"})
    @Override
    public boolean equals(Object obj) {
        checkInit();
        return delegate.equals(obj);
    }

    @Override
    public int hashCode() {
        checkInit();
        return delegate.hashCode();
    }
}