/*
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 Jun 27, 2008
*/
package com.bigdata.relation.rule.eval;
import com.bigdata.relation.IMutableRelation;
import com.bigdata.relation.rule.IProgram;
/**
* Symbolic constants corresponding to the type of action associated with the
* execution of an {@link IProgram}.
*
* @author <a href="mailto:thompsonbry@users.sourceforge.net">Bryan Thompson</a>
* @version $Id$
*/
public enum ActionEnum {
/**
* The computed {@link ISolution}s will be materialized for the client.
*/
Query(false/*mutation*/),
/**
* Write the computed {@link ISolution}s on the {@link IMutableRelation}.
*/
Insert(true/*mutation*/),
/**
* Delete the computed {@link ISolution}s from the {@link IMutableRelation}.
*/
Delete(true/*mutation*/);
// /**
// * Apply an {@link ITransform} to the elements of the
// * {@link IMutableRelation} selected by the computed {@link ISolution}s.
// */
// Update;
final private boolean mutation;
private ActionEnum(final boolean mutation) {
this.mutation = mutation;
}
/**
* True iff the {@link ActionEnum} is one of those that writes on the
* relation (vs query).
*/
public boolean isMutation() {
return mutation;
}
}