/*
* 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.query;
import java.util.Iterator ;
import java.util.List ;
import org.apache.jena.rdf.model.Model ;
import org.apache.jena.sparql.engine.binding.Binding ;
/** Results from a query in a table-like manner for SELECT queries.
* Each row corresponds to a set of bindings which fulfil the conditions
* of the query. Access to the results is by variable name.
*
* @see Query
* @see QueryExecution
* @see QuerySolution
*/
public interface ResultSet extends Iterator<QuerySolution>
{
// Could have a ResultSetBase that does all the Node=>Resource (= ResultBinding)
/**
* Is there another result?
*/
@Override
public boolean hasNext() ;
/** Moves onto the next result. */
@Override
public QuerySolution next() ;
/** Moves onto the next result (legacy - use .next()). */
public QuerySolution nextSolution() ;
/** Move to the next binding (low level) */
public Binding nextBinding() ;
/** Return the "row" number for the current iterator item */
public int getRowNumber() ;
/** Get the variable names for the projection. Not all query
* solutions from a result have every variable defined.
*/
public List<String> getResultVars() ;
/** Get the model that resources are created against - may be null */
public Model getResourceModel() ;
}