au.org.utsoac.model.BaseEntity.java Source code

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Here is the source code for au.org.utsoac.model.BaseEntity.java

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/*
 * Copyright 2002-2013 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 au.org.utsoac.model;

import javax.persistence.Column;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.MappedSuperclass;
import javax.persistence.PrePersist;
import javax.persistence.PreUpdate;
import javax.persistence.Version;

import org.hibernate.annotations.Type;
import org.joda.time.DateTime;

@MappedSuperclass
public class BaseEntity {

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    protected Long id;

    @Column(name = "creation_time", nullable = false)
    @Type(type = "org.jadira.usertype.dateandtime.joda.PersistentDateTime")
    private DateTime creationTime;

    @Column(name = "modification_time", nullable = false)
    @Type(type = "org.jadira.usertype.dateandtime.joda.PersistentDateTime")
    private DateTime modificationTime;

    @Version
    private long version;

    public DateTime getCreationTime() {
        return creationTime;
    }

    public DateTime getModificationTime() {
        return modificationTime;
    }

    @PrePersist
    public void prePersist() {
        DateTime now = DateTime.now();
        this.creationTime = now;
        this.modificationTime = now;
    }

    @PreUpdate
    public void preUpdate() {
        this.modificationTime = DateTime.now();
    }

    public long getVersion() {
        return version;
    }

    public Long getId() {
        return id;
    }

    public boolean isNew() {
        return (this.id == null);
    }

}