/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.jena.sparql.algebra.op;
import java.util.List ;
import java.util.Objects;
import org.apache.jena.sparql.algebra.Op ;
import org.apache.jena.sparql.algebra.OpVisitor ;
import org.apache.jena.sparql.algebra.Transform ;
import org.apache.jena.sparql.core.VarExprList ;
import org.apache.jena.sparql.expr.ExprAggregator ;
import org.apache.jena.sparql.sse.Tags ;
import org.apache.jena.sparql.util.NodeIsomorphismMap ;
public class OpGroup extends Op1
{
private VarExprList groupVars ;
private List<ExprAggregator> aggregators ;
public OpGroup(Op subOp, VarExprList groupVars, List<ExprAggregator> aggregators)
{
super(subOp) ;
this.groupVars = groupVars ;
this.aggregators = aggregators ;
}
@Override
public String getName() { return Tags.tagGroupBy ; }
public VarExprList getGroupVars() { return groupVars ; }
public List<ExprAggregator> getAggregators() { return aggregators ; }
@Override
public void visit(OpVisitor opVisitor) { opVisitor.visit(this) ; }
@Override
public Op1 copy(Op subOp) { return new OpGroup(subOp, groupVars, aggregators) ; }
@Override
public Op apply(Transform transform, Op subOp)
{ return transform.transform(this, subOp) ; }
@Override
public int hashCode()
{
int x = getSubOp().hashCode() ;
if ( groupVars != null )
x ^= groupVars.hashCode() ;
if ( aggregators != null )
x ^= aggregators.hashCode() ;
return x ;
}
@Override
public boolean equalTo(Op other, NodeIsomorphismMap labelMap)
{
if ( ! (other instanceof OpGroup) ) return false ;
OpGroup opGroup = (OpGroup)other ;
if ( ! Objects.equals(groupVars, opGroup.groupVars) )
return false ;
if ( ! Objects.equals(aggregators, opGroup.aggregators) )
return false ;
return getSubOp().equalTo(opGroup.getSubOp(), labelMap) ;
}
}