org.tigris.subversion.javahl.RevisionRange Maven / Gradle / Ivy
/**
* @copyright
* ====================================================================
* Copyright (c) 2007 CollabNet. All rights reserved.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at http://subversion.tigris.org/license-1.html.
* If newer versions of this license are posted there, you may use a
* newer version instead, at your option.
*
* This software consists of voluntary contributions made by many
* individuals. For exact contribution history, see the revision
* history and logs, available at http://subversion.tigris.org/.
* ====================================================================
* @endcopyright
*/
package org.tigris.subversion.javahl;
/**
* Object that describes a revision range
*
* @since 1.5
*/
public class RevisionRange implements Comparable, java.io.Serializable
{
// Update the serialVersionUID when there is a incompatible change
// made to this class. See any of the following, depending upon
// the Java release.
// http://java.sun.com/j2se/1.3/docs/guide/serialization/spec/version.doc7.html
// http://java.sun.com/j2se/1.4/pdf/serial-spec.pdf
// http://java.sun.com/j2se/1.5.0/docs/guide/serialization/spec/version.html#6678
// http://java.sun.com/javase/6/docs/platform/serialization/spec/version.html#6678
private static final long serialVersionUID = 1L;
private Revision from;
private Revision to;
/**
* Creates a new instance. Called by native library.
*/
private RevisionRange(long from, long to)
{
this.from = Revision.getInstance(from);
this.to = Revision.getInstance(to);
}
public RevisionRange(Revision from, Revision to)
{
this.from = from;
this.to = to;
}
/**
* Accepts a string in one of these forms: n m-n Parses the results into a
* from and to revision
* @param revisionElement revision range or single revision
*/
public RevisionRange(String revisionElement)
{
super();
if (revisionElement == null)
{
return;
}
int hyphen = revisionElement.indexOf('-');
if (hyphen > 0)
{
try
{
long fromRev = Long
.parseLong(revisionElement.substring(0, hyphen));
long toRev = Long.parseLong(revisionElement
.substring(hyphen + 1));
this.from = new Revision.Number(fromRev);
this.to = new Revision.Number(toRev);
}
catch (NumberFormatException e)
{
return;
}
}
else
{
try
{
long revNum = Long.parseLong(revisionElement.trim());
this.from = new Revision.Number(revNum);
this.to = this.from;
}
catch (NumberFormatException e)
{
return;
}
}
}
public Revision getFromRevision()
{
return from;
}
public Revision getToRevision()
{
return to;
}
public String toString()
{
if (from != null && to != null)
{
if (from.equals(to))
return from.toString();
else
return from.toString() + '-' + to.toString();
}
return super.toString();
}
public static Long getRevisionAsLong(Revision rev)
{
long val = 0;
if (rev != null && rev instanceof Revision.Number)
{
val = ((Revision.Number) rev).getNumber();
}
return new Long(val);
}
public int hashCode()
{
final int prime = 31;
int result = 1;
result = prime * result + ((from == null) ? 0 : from.hashCode());
result = prime * result + ((to == null) ? 0 : to.hashCode());
return result;
}
/**
* @param range The RevisionRange to compare this object to.
*/
public boolean equals(Object range)
{
if (this == range)
return true;
if (!super.equals(range))
return false;
if (getClass() != range.getClass())
return false;
final RevisionRange other = (RevisionRange) range;
if (from == null)
{
if (other.from != null)
return false;
}
else if (!from.equals(other.from))
{
return false;
}
if (to == null)
{
if (other.to != null)
return false;
}
else if (!to.equals(other.to))
{
return false;
}
return true;
}
/**
* @param range The RevisionRange to compare this object to.
*/
public int compareTo(Object range)
{
if (this == range)
return 0;
Revision other = ((RevisionRange) range).getFromRevision();
return RevisionRange.getRevisionAsLong(this.getFromRevision())
.compareTo(RevisionRange.getRevisionAsLong(other));
}
}