/**
Copyright (C) SYSTAP, LLC DBA Blazegraph 2006-2016. All rights reserved.
Contact:
SYSTAP, LLC DBA Blazegraph
2501 Calvert ST NW #106
Washington, DC 20008
licenses@blazegraph.com
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
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 for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/*
* Created on Feb 16, 2007
*/
package com.bigdata.journal;
/**
* A read-only view of an {@link ICommitRecord}.
*
* @author <a href="mailto:thompsonbry@users.sourceforge.net">Bryan Thompson</a>
*/
public class CommitRecord implements ICommitRecord {
private final long timestamp;
private final long commitCounter;
private final long[] roots;
/**
* @todo this may not be the correct commit counter unless this method is
* synchronized with the writeService.
*
* @todo are commit counters global or local?
*/
public CommitRecord() {
this(0L/* timestamp */, 0L/* commitCounter */,
new long[ICommitRecord.MAX_ROOT_ADDRS]);
}
public CommitRecord(final long timestamp, final long commitCounter,
final long[] roots) {
// assert timestamp != 0L; // @todo what constraint?
assert roots != null;
assert roots.length == ICommitRecord.MAX_ROOT_ADDRS : "roots.length="
+ roots.length + ", but expecting: "
+ ICommitRecord.MAX_ROOT_ADDRS;
this.timestamp = timestamp;
this.commitCounter = commitCounter;
this.roots = roots;
}
@Override
final public long getTimestamp() {
return timestamp;
}
@Override
final public long getCommitCounter() {
return commitCounter;
}
@Override
final public int getRootAddrCount() {
return roots.length;
}
@Override
final public long getRootAddr(int index) {
return roots[index];
}
@Override
public String toString() {
StringBuffer sb = new StringBuffer();
sb.append("CommitRecord");
sb.append("{timestamp="+timestamp);
sb.append(", commitCounter="+commitCounter);
sb.append(", roots=[");
for( int i=0; i< roots.length; i++) {
if(i>0) sb.append(", ");
// sb.append(Addr.toString(roots[i]));
sb.append(roots[i]);
}
sb.append("]}");
return sb.toString();
}
@Override
public boolean equals(final Object o) {
if (this == o)
return true;
if (!(o instanceof ICommitRecord))
return false;
final ICommitRecord t = (ICommitRecord) o;
if (timestamp != t.getTimestamp())
return false;
if (commitCounter != t.getCommitCounter())
return false;
if (roots.length != t.getRootAddrCount())
return false;
for (int i = 0; i < roots.length; i++) {
if (roots[i] != t.getRootAddr(i))
return false;
}
return true;
}
}