path: root/src/main/java/nu/xss/jpa/entity/AbstractEntity.java

/**
 * This file is part of xss-jpa.
 *
 * Copyright 2012 Sebastian Schmelzer
 * http://xss.nu/
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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 library. If not, see <http://www.gnu.org/licenses/>.
 *
 */
package nu.xss.jpa.entity;

import java.lang.reflect.Field;

import javax.persistence.MappedSuperclass;

/**
 * The Class AbstractEntity.
 * 
 * @param <K>
 *            the key type
 */
@MappedSuperclass
public abstract class AbstractEntity<K> implements TypedEntity<K> {

	/** The Constant serialVersionUID. */
	private static final long serialVersionUID = 1L;

	/**
	 * Instantiates a new abstract entity.
	 */
	public AbstractEntity() {
		Field[] f = this.getClass().getFields();
		
		System.out.println(f.length);
		
		for (int i = 0; i < f.length; i++) {
			System.out.println(f[i].toGenericString());
			System.out.println(f[i].toString());
		}
	}

	/**
	 * Instantiates a new abstract entity.
	 * 
	 * @param id
	 *            the id
	 */
	public AbstractEntity(final K id) {
		this.setId(id);
	}

	@Override
	public int hashCode() {
		final int prime = 31;
		int result = 1;
		result = prime * result
				+ (this.getId() == null ? 0 : this.getId().hashCode());
		return result;
	}

	@Override
	public boolean equals(final Object obj) {

		if (this == obj) {
			return true;
		}

		if (obj == null) {
			return false;
		}

		if (this.getClass() != obj.getClass()) {
			return false;
		}

		final AbstractEntity<?> other = (AbstractEntity<?>) obj;

		if (this.getId() == null) {
			if (other.getId() != null) {
				return false;
			}
		} else if (!this.getId().equals(other.getId())) {
			return false;
		}

		return true;
	}

}