package eu.dnetlib.openaire.db.objects;

import java.util.Collection;

import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.JoinTable;
import javax.persistence.ManyToMany;
import javax.persistence.ManyToOne;
import javax.persistence.Table;

import org.hibernate.annotations.Index;


@Entity(name = "instances")
@Table(name = "instances")
public class Instance extends AbstractOpenaireObject {

	/**
	 * 
	 */
	private static final long serialVersionUID = -2793192986820725745L;

	@Id
	@Column(name = "instanceID")
	private String instanceID;
		
	@Column(name = "unique_identifier")
	private String uniqueIdentifier;

	@ManyToOne
	@JoinColumn(name = "datasource")
	@Index(name="instances_datasource_idx")
	private DataSource dataSource;
	
	@ManyToOne
	@JoinColumn(name = "resource")
	@Index(name="instances_resource_idx")
	private Result resource;
	
	@ManyToMany(cascade={CascadeType.PERSIST, CascadeType.MERGE})
	@JoinTable(
	        name="webresources_instances",
	        joinColumns=@JoinColumn(name="instanceID"),
	        inverseJoinColumns=@JoinColumn(name="webResourceID")
	    )
	private Collection<WebResource> webResources;
		
	public String getInstanceID() {
		return instanceID;
	}

	public void setInstanceID(String instanceID) {
		this.instanceID = instanceID;
	}

	public String getUniqueIdentifier() {
		return uniqueIdentifier;
	}

	public void setUniqueIdentifier(String uniqueIdentifier) {
		this.uniqueIdentifier = uniqueIdentifier;
	}

	public DataSource getDataSource() {
		return dataSource;
	}

	public void setDataSource(DataSource dataSource) {
		this.dataSource = dataSource;
	}

	public Result getResource() {
		return resource;
	}

	public void setResource(Result resource) {
		this.resource = resource;
	}

	public Collection<WebResource> getWebResources() {
		return webResources;
	}

	public void setWebResources(Collection<WebResource> webResources) {
		this.webResources = webResources;
	}

}