/**
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 Aug 25, 2011
*/
package com.bigdata.rdf.sparql.ast;
import java.io.Serializable;
import java.util.LinkedHashSet;
import java.util.Set;
import cern.colt.Arrays;
import com.bigdata.bop.IValueExpression;
import com.bigdata.bop.IVariable;
import com.bigdata.rdf.internal.IV;
import com.bigdata.rdf.internal.constraints.INeedsMaterialization;
/**
* Computed {@link INeedsMaterialization} metadata for an
* {@link IValueExpression}.
*
* @author <a href="mailto:thompsonbry@users.sourceforge.net">Bryan Thompson</a>
* @version $Id: ComputedMaterializationRequirement.java 5179 2011-09-12
* 20:13:25Z thompsonbry $
*/
@SuppressWarnings("rawtypes")
public class ComputedMaterializationRequirement implements
INeedsMaterialization, Serializable {
/**
*
*/
private static final long serialVersionUID = 1L;
private final Requirement requirement;
private final Set<IVariable<IV>> varsToMaterialize;
@Override
public String toString() {
return "{requirement=" + requirement + ", vars=" + Arrays.toString(varsToMaterialize.toArray())
+ "}";
}
public ComputedMaterializationRequirement(final Requirement requirement,
final Set<IVariable<IV>> varsToMaterialize) {
this.requirement = requirement;
this.varsToMaterialize = varsToMaterialize;
}
public ComputedMaterializationRequirement(final IValueExpression<?> ve) {
varsToMaterialize = new LinkedHashSet<IVariable<IV>>();
requirement = StaticAnalysis.gatherVarsToMaterialize(ve, varsToMaterialize);
}
@Override
public Requirement getRequirement() {
return requirement;
}
public Set<IVariable<IV>> getVarsToMaterialize() {
return varsToMaterialize;
}
@Override
public boolean equals(final Object o) {
if (this == o)
return true;
if (!(o instanceof ComputedMaterializationRequirement))
return false;
final ComputedMaterializationRequirement t = (ComputedMaterializationRequirement) o;
if (requirement != t.requirement)
return false;
if (!varsToMaterialize.equals(t.varsToMaterialize))
return false;
return true;
}
}