package com.trendmicro.grid.acl.ds.jpa.entities;
   
   import com.trendmicro.grid.acl.ds.datatypes.SharedNamedFileIdentifier;
   import com.trendmicro.grid.acl.l0.datatypes.FileIdentifier;
   
   import javax.persistence.*;
   import java.io.Serializable;
   
   import static net.sf.tinyjee.util.Assert.assertNotNull;
  
  /**
   * Implements the JPA driven database bindings for the table "PACKAGE_FILES_HISTORY".
   *
   * @author juergen_kellerer, 2010-06-11
   * @version 1.0
   */
  @NamedQueries({
  		@NamedQuery(name = "PackageFilesHistory.SelectMaxRevisionForPackage",
  				query = "SELECT MAX(h.id.revision) " +
  						"FROM PACKAGE_FILES_HISTORY h WHERE id.packageDetails = :packageDetails"),
  		@NamedQuery(name = "PackageFilesHistory.SelectNamedIdentifierByFileDetails",
  						query = "SELECT h " +
  								"FROM PACKAGE_FILES_HISTORY h WHERE id.fileDetails = :fileDetails")
  })
  @Entity(name = "PACKAGE_FILES_HISTORY")
  public class JpaNamedFileIdentifierHistory implements Serializable {
  
  	private static final long serialVersionUID = -6605212849235170699L;
  
  	public static enum HistoryType {
  		added, removed, renamed
  	}
  
  	@EmbeddedId
  	private JpaNamedFileIdentifierHistoryId reference;
  
  	@Enumerated(value = EnumType.ORDINAL)
  	@Column(name = "TYPE", nullable = false)
  	private HistoryType type;
  
  	public JpaNamedFileIdentifierHistory() {
  	}
  
  	public JpaNamedFileIdentifierHistory(JpaFileDetails fileDetails,
  										 JpaPackageDetails packageDetails,
  										 String fileName,
  										 HistoryType type,
  										 int revision) {
  		assertNotNull("fileDetails", fileDetails);
  		assertNotNull("packageDetails", packageDetails);
  		assertNotNull("fileName", fileName);
  		assertNotNull("type", type);
  
  		reference = new JpaNamedFileIdentifierHistoryId(fileDetails, packageDetails, fileName, revision);
  		this.type = type;
  	}
  
  	public JpaNamedFileIdentifierHistoryId getReference() {
  		return reference;
  	}
  
  	public HistoryType getType() {
  		return type;
  	}
  
  	/**
  	 * Exports this element for external use, without fetching the identifier values.
  	 *
  	 * @param identifier the identifier to set.
  	 * @return a SharedNamedFileIdentifier instance.
  	 */
  	public SharedNamedFileIdentifier export(FileIdentifier identifier) {
  		return new SharedNamedFileIdentifier(identifier, reference.getFileName());
  	}
  
  	/**
  	 * Exports this element for external use.
  	 *
  	 * @return a SharedNamedFileIdentifier instance.
  	 */
  	public SharedNamedFileIdentifier export() {
  		return new SharedNamedFileIdentifier(reference.getFileDetails().getIdentifier(), reference.getFileName());
  	}
  
  	@Override
  	public boolean equals(Object o) {
  		if (this == o) return true;
  		if (!(o instanceof JpaNamedFileIdentifierHistory)) return false;
  		JpaNamedFileIdentifierHistory that = (JpaNamedFileIdentifierHistory) o;
  		return type == that.type && reference.equals(that.reference);
  	}
  
  	@Override
  	public int hashCode() {
  		int result = reference.hashCode();
  		result = 31 * result + type.hashCode();
  		return result;
  	}
  
 	@Override
 	public String toString() {
 		return "JpaNamedFileIdentifierHistory{" +
 				"reference=" + reference +
 				", type=" + type +
 				'}';
 	}
 }