/*
* RHQ Management Platform
* Copyright (C) 2005-2008 Red Hat, Inc.
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License, version 2, as
* published by the Free Software Foundation, and/or the GNU Lesser
* General Public License, version 2.1, also 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 General Public License and the GNU Lesser General Public License
* for more details.
*
* You should have received a copy of the GNU General Public License
* and the GNU Lesser General Public License along with this program;
* if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
package org.rhq.core.domain.cloud;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;
import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.ManyToOne;
import javax.persistence.NamedQueries;
import javax.persistence.NamedQuery;
import javax.persistence.OneToMany;
import javax.persistence.OrderBy;
import javax.persistence.PrePersist;
import javax.persistence.SequenceGenerator;
import javax.persistence.Table;
import org.rhq.core.domain.resource.Agent;
/**
* An object to capture a snapshot of the order in which particular agents
* will fail over to particular servers. The {@link FailoverListDetails}
* will contain the ordered references back to other {@link Server}s.
*
* @author jmarques
*
*/
@Entity(name = "FailoverList")
@NamedQueries( //
{
@NamedQuery(name = FailoverList.QUERY_DELETE_VIA_AGENT, query = "DELETE FROM FailoverList fl WHERE fl.agent = :agent"),
@NamedQuery(name = FailoverList.QUERY_DELETE_VIA_PARTITION_EVENT, query = "DELETE FROM FailoverList fl WHERE fl.partitionEvent = :partitionEvent"),
@NamedQuery(name = FailoverList.QUERY_GET_VIA_AGENT, query = "SELECT fl FROM FailoverList fl WHERE fl.agent = :agent"),
@NamedQuery(name = FailoverList.QUERY_TRUNCATE, query = "DELETE FROM FailoverList") })
@SequenceGenerator(allocationSize = org.rhq.core.domain.util.Constants.ALLOCATION_SIZE, name = "RHQ_FAILOVER_LIST_ID_SEQ", sequenceName = "RHQ_FAILOVER_LIST_ID_SEQ")
@Table(name = "RHQ_FAILOVER_LIST")
public class FailoverList implements Serializable {
public static final long serialVersionUID = 1L;
public static final String QUERY_DELETE_VIA_AGENT = "FailoverList.deletViaAgent";
public static final String QUERY_DELETE_VIA_PARTITION_EVENT = "FailoverList.deletViaPartitionEvent";
public static final String QUERY_GET_VIA_AGENT = "FailoverList.getViaAgent";
public static final String QUERY_TRUNCATE = "FailoverList.truncate";
@Column(name = "ID", nullable = false)
@GeneratedValue(strategy = GenerationType.AUTO, generator = "RHQ_FAILOVER_LIST_ID_SEQ")
@Id
private int id;
@JoinColumn(name = "PARTITION_EVENT_ID", referencedColumnName = "ID", nullable = false)
@ManyToOne(optional = false)
protected PartitionEvent partitionEvent;
@JoinColumn(name = "AGENT_ID", referencedColumnName = "ID", nullable = false)
@ManyToOne(fetch = FetchType.LAZY, optional = false)
protected Agent agent;
@Column(name = "AGENT_ID", insertable = false, updatable = false)
private int agentId;
@Column(name = "CTIME", nullable = false)
private long ctime;
@OneToMany(mappedBy = "failoverList", cascade = CascadeType.ALL)
@OrderBy("ordinal ASC")
private List<FailoverListDetails> serverList = new ArrayList<FailoverListDetails>();
// required for JPA
protected FailoverList() {
}
public FailoverList(PartitionEvent event, Agent agent) {
this.partitionEvent = event;
this.agent = agent;
}
public PartitionEvent getPartitionEvent() {
return partitionEvent;
}
public void setPartitionEvent(PartitionEvent partitionEvent) {
this.partitionEvent = partitionEvent;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public Agent getAgent() {
return agent;
}
public void setAgent(Agent agent) {
this.agent = agent;
}
public long getCtime() {
return ctime;
}
public List<FailoverListDetails> getServerList() {
return serverList;
}
public void setServerList(List<FailoverListDetails> serverList) {
this.serverList = serverList;
}
@PrePersist
void onPersist() {
this.ctime = System.currentTimeMillis();
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + agentId;
result = prime * result + (int) (ctime ^ (ctime >>> 32));
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj == null || !(obj instanceof FailoverList)) {
return false;
}
final FailoverList other = (FailoverList) obj;
if (agentId != other.agentId) {
return false;
}
if (ctime != other.ctime) {
return false;
}
return true;
}
}