/**
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
*/
package com.bigdata.blueprints;
import java.util.Properties;
import org.apache.log4j.Logger;
/**
* An implementation of a Blueprints Graph that implements immortality using
* the RDR specification.
*
* Modeling vertices
* <<:v1 rdf:type :Vertex>> :timestamp "t1" .
*
* Modeling element properties
* <<:v1 :p1 "val1">> :timestamp "t1" .
* <<:v1 :p1 "val2">> :timestamp "t2" .
*
* Modeling edges
* Two distinct edges between :v and :v2 with the same edge label. Totally
* legal in Blueprints.
* :v1 :knows :v2 .
* <<:v1 :knows :v2>> :id :e1 .
* <<:v2 :knows :v2>> :id :e2 .
*
* Created at different times.
* :e1 :timestamp "t1" .
* :e2 :timestamp "t2" .
*
* With different properties.
* <<:e1 :p1 "foo">> :timestamp "t1" .
* <<:e2 :p1 "bar">> :timestamp "t2" .
*
* Modeling a deleted property:
*
* <<:v1 :p1 :null>> :timestamp "t3" .
*
* Multiple values for the same property with the same timestamp implies a list:
*
* <<:v2 :p2 "v1">> :timestamp "t1" .
* <<:v2 :p2 "v2">> :timestamp "t1" .
* <<:v2 :p2 "v3">> :timestamp "t1" .
*
* Pure append writes - no removal of old property values.
*
* @author mikepersonick
*
*/
public abstract class ImmortalGraph extends BigdataGraph {
private static final transient Logger log = Logger.getLogger(ImmortalGraph.class);
public ImmortalGraph(final BlueprintsValueFactory factory) {
this(factory, new Properties());
}
public ImmortalGraph(final BlueprintsValueFactory factory,
final Properties props) {
super(factory, props);
}
}