/**
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.rdf.internal.constraints;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;
import java.util.Map;
import java.util.UUID;
import javax.xml.datatype.DatatypeConfigurationException;
import javax.xml.datatype.DatatypeFactory;
import javax.xml.datatype.XMLGregorianCalendar;
import com.bigdata.bop.BOp;
import com.bigdata.bop.IBindingSet;
import com.bigdata.bop.ImmutableBOp;
import com.bigdata.bop.NV;
import com.bigdata.rdf.internal.IV;
import com.bigdata.rdf.model.BigdataLiteral;
import com.bigdata.rdf.model.BigdataURI;
import com.bigdata.rdf.model.BigdataValueFactory;
import com.bigdata.rdf.sparql.ast.DummyConstantNode;
import com.bigdata.rdf.sparql.ast.FilterNode;
import com.bigdata.rdf.sparql.ast.GlobalAnnotations;
/**
* Implements the now() operator.
*/
public class UUIDBOp extends IVValueExpression<IV> implements INeedsMaterialization{
/**
*
*/
private static final long serialVersionUID = 9136864442064392445L;
public interface Annotations extends ImmutableBOp.Annotations {
String STR = UUIDBOp.class.getName() + ".str";
}
public UUIDBOp(final GlobalAnnotations globals, final boolean str) {
this(BOp.NOARGS, anns(globals, new NV(Annotations.STR, str)));
}
/**
* Required shallow copy constructor.
*
* @param args
* The operands.
* @param op
* The operation.
*/
public UUIDBOp(final BOp[] args, Map<String, Object> anns) {
super(args, anns);
}
/**
* Constructor required for {@link com.bigdata.bop.BOpUtility#deepCopy(FilterNode)}.
*
* @param op
*/
public UUIDBOp(final UUIDBOp op) {
super(op);
}
final public IV get(final IBindingSet bs) {
final BigdataValueFactory vf = super.getValueFactory();
final UUID uuid = UUID.randomUUID();
if (str()) {
final BigdataLiteral l = vf.createLiteral(uuid.toString());
return DummyConstantNode.toDummyIV(l);
} else {
final BigdataURI uri = vf.createURI("urn:uuid:" + uuid.toString());
return DummyConstantNode.toDummyIV(uri);
}
}
public boolean str() {
return (boolean) getProperty(Annotations.STR);
}
public String toString() {
return str() ? "struuid()" : "uuid()";
}
public Requirement getRequirement() {
return Requirement.NEVER;
}
}