UserSessionUrlImpl.java

/**
 * Licensed to Apereo under one or more contributor license
 * agreements. See the NOTICE file distributed with this work
 * for additional information regarding copyright ownership.
 * Apereo licenses this file to you 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 the following location:
 *
 *   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 org.jasig.portlet.blackboardvcportlet.dao.impl;

import javax.persistence.Cacheable;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.ManyToOne;
import javax.persistence.SequenceGenerator;
import javax.persistence.Table;
import javax.persistence.TableGenerator;

import org.hibernate.annotations.Cache;
import org.hibernate.annotations.CacheConcurrencyStrategy;
import org.hibernate.annotations.Immutable;
import org.hibernate.annotations.NaturalId;
import org.hibernate.annotations.NaturalIdCache;
import org.jasig.portlet.blackboardvcportlet.data.Session;
import org.jasig.portlet.blackboardvcportlet.data.ConferenceUser;
import org.jasig.portlet.blackboardvcportlet.data.UserSessionUrl;

@Entity
@Table(name = "VC2_USER_SESSION_URL")
@SequenceGenerator(
        name="VC2_USER_SESSION_URL_GEN",
        sequenceName="VC2_USER_SESSION_URL_SEQ",
        allocationSize=10
    )
@TableGenerator(
        name="VC2_USER_SESSION_URL_GEN",
        pkColumnValue="VC2_USER_SESSION_URL",
        allocationSize=10
    )
@Immutable
@NaturalIdCache
@Cacheable
@Cache(usage = CacheConcurrencyStrategy.NONSTRICT_READ_WRITE)
public class UserSessionUrlImpl implements UserSessionUrl {
    private static final long serialVersionUID = 1L;

    @Id
    @GeneratedValue(generator = "VC2_USER_SESSION_URL_GEN")
    @Column(name = "URL_ID")
    private final long urlId;
    
    @NaturalId
    @ManyToOne(targetEntity = SessionImpl.class, optional = false)
    @JoinColumn(name = "SESSION_ID", nullable = false)
    private final Session session;

    @NaturalId
    @ManyToOne(targetEntity = ConferenceUserImpl.class, optional = false )
    @JoinColumn(name = "USER_ID", nullable = false)
    private final ConferenceUser user;
    
    @Column(name = "URL", nullable = false)
    private final String url;
    
    /**
     * Needed by hibernate
     */
    @SuppressWarnings("unused")
    private UserSessionUrlImpl() {
        this.urlId = -1;
        this.session = null;
        this.user = null;
        this.url = null;
    }

    UserSessionUrlImpl(Session session, ConferenceUser creator, String url) {
        this.urlId = -1;
        
        this.session = session;
        this.user = creator;
        this.url = url;
    }
    
    @Override
    public long getUrlId() {
        return urlId;
    }

    @Override
    public Session getSession() {
        return session;
    }

    @Override
    public ConferenceUser getUser() {
        return user;
    }

    @Override
    public String getUrl() {
        return url;
    }

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

    @Override
    public boolean equals(Object obj) {
        if (this == obj)
            return true;
        if (obj == null)
            return false;
        if (getClass() != obj.getClass())
            return false;
        UserSessionUrlImpl other = (UserSessionUrlImpl) obj;
        if (session == null) {
            if (other.session != null)
                return false;
        }
        else if (!session.equals(other.session))
            return false;
        if (user == null) {
            if (other.user != null)
                return false;
        }
        else if (!user.equals(other.user))
            return false;
        return true;
    }

    @Override
    public String toString() {
        return "UserSessionUrlImpl [urlId=" + urlId + ", url=" + url + ", user=" + user + ", session=" + session + "]";
    }
}