package nu.xss.jpa.entity;

import javax.persistence.MappedSuperclass;

@MappedSuperclass
public abstract class AbstractEntity<K> implements TypedEntity<K> {

	private static final long serialVersionUID = 1L;

	public AbstractEntity() {
	}

	public AbstractEntity(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;
	}

}