/*
 * This file is part of the Alitheia system, developed by the SQO-OSS
 * consortium as part of the IST FP6 SQO-OSS project, number 033331.
 *
 * Copyright 2008 - 2010 - Organization for Free and Open Source Software,  
 *                Athens, Greece.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *
 *     * Redistributions in binary form must reproduce the above
 *       copyright notice, this list of conditions and the following
 *       disclaimer in the documentation and/or other materials provided
 *       with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 */

package eu.sqooss.service.db;

import java.util.Map;
import java.util.HashMap;
import java.util.List;
import java.util.Set;

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.OneToMany;
import javax.persistence.Table;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlRootElement;

import eu.sqooss.core.AlitheiaCore;
import eu.sqooss.service.db.DAObject;

/**
 * A node in a Alitheia Core cluster installation
 * 
 * @assoc 1 - n StoredProject
 */
@XmlRootElement(name="clusternode")
@Entity
@Table(name="CLUSTERNODE")
public class ClusterNode extends DAObject {

    @Id
    @GeneratedValue(strategy=GenerationType.AUTO)
    @Column(name="CLUSTERNODE_ID")
    @XmlElement
    private long id;
  
    @Column(name="CLUSTERNODE_NAME")
    @XmlElement
    private String name;

    @OneToMany(cascade = CascadeType.REFRESH, mappedBy="clusternode",  fetch = FetchType.LAZY)
    private Set<StoredProject> projects;
    
    // Nothing to do here
    public ClusterNode(){}
    
    public ClusterNode(String servername){ 
    	setName(servername);
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getName() {
        return this.name;
    }
    
    
    public long getId() {
        return id;
    }

    public void setId(long id) {
        this.id = id;
    }
    
    public Set<StoredProject> getProjects() {
        return projects;
    }

    public void setProjects(Set<StoredProject> projects) {
        this.projects = projects;
    }
    
    public static ClusterNode getClusteNodeByName(String name) {
        DBService dbs = AlitheiaCore.getInstance().getDBService();
        
        Map<String,Object> parameterMap = new HashMap<String,Object>();
        parameterMap.put("name",name);
        List<ClusterNode> cnList = dbs.findObjectsByProperties(ClusterNode.class, parameterMap);
        return (cnList == null || cnList.isEmpty()) ? null : cnList.get(0);
    }
    
    public static ClusterNode thisNode() {
        String hostname;
        try {
            java.net.InetAddress localMachine = java.net.InetAddress.getLocalHost();
            hostname = localMachine.getHostName();
        }
        catch(java.net.UnknownHostException ex) {
            hostname = "unknown host";
        }       
        
        return getClusteNodeByName(hostname);
    }
}
