| /* |
| * 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.HashMap; |
| import java.util.Iterator; |
| import java.util.Map; |
| import java.util.concurrent.TimeUnit; |
| |
| import org.apache.jena.graph.Node; |
| import org.apache.jena.rdf.model.Model; |
| import org.apache.jena.rdf.model.RDFNode; |
| import org.apache.jena.sparql.core.Var; |
| import org.apache.jena.sparql.engine.binding.Binding; |
| import org.apache.jena.sparql.engine.binding.BindingLib; |
| import org.apache.jena.sparql.exec.QueryExecDatasetBuilder; |
| import org.apache.jena.sparql.exec.QueryExecutionCompat; |
| import org.apache.jena.sparql.util.Context; |
| import org.apache.jena.sparql.util.Symbol; |
| |
| /** |
| * Query Execution for local datasets - builder style. |
| */ |
| public class QueryExecutionDatasetBuilder implements QueryExecutionBuilder { |
| |
| /** Create a new builder of {@link QueryExecution} for a local dataset. */ |
| public static QueryExecutionDatasetBuilder create() { return new QueryExecutionDatasetBuilder(); } |
| |
| private final QueryExecDatasetBuilder builder; |
| private Dataset dataset = null; |
| |
| public QueryExecutionDatasetBuilder() { |
| builder = QueryExecDatasetBuilder.create(); |
| } |
| |
| @Override |
| public QueryExecutionDatasetBuilder query(Query query) { |
| builder.query(query); |
| return this; |
| } |
| |
| @Override |
| public QueryExecutionDatasetBuilder query(String queryString) { |
| builder.query(queryString); |
| return this; |
| } |
| |
| @Override |
| public QueryExecutionDatasetBuilder query(String queryString, Syntax syntax) { |
| builder.query(queryString, syntax); |
| return this; |
| } |
| |
| public QueryExecutionDatasetBuilder dataset(Dataset dataset) { |
| this.dataset = dataset; |
| builder.dataset(dataset.asDatasetGraph()); |
| return this; |
| } |
| |
| public QueryExecutionDatasetBuilder model(Model model) { |
| Dataset ds = DatasetFactory.create(model); |
| dataset(ds); |
| return this; |
| } |
| |
| @Override |
| public QueryExecutionDatasetBuilder set(Symbol symbol, Object value) { |
| builder.set(symbol, value); |
| return this; |
| } |
| |
| @Override |
| public QueryExecutionDatasetBuilder set(Symbol symbol, boolean value) { |
| builder.set(symbol, value); |
| return this; |
| } |
| |
| @Override |
| public QueryExecutionDatasetBuilder context(Context context) { |
| builder.context(context); |
| return this; |
| } |
| |
| /** @deprecated Prefer {@link #substitution(Binding)} which substitutes variables for values in the the query before execution. */ |
| @Deprecated(forRemoval = true) |
| @SuppressWarnings("all") |
| public QueryExecutionDatasetBuilder initialBinding(Binding binding) { |
| builder.initialBinding(binding); |
| return this; |
| } |
| |
| /** |
| * Prefer {@link #substitution(QuerySolution)} which substitutes variables for values in the the query before execution. |
| */ |
| public QueryExecutionDatasetBuilder initialBinding(QuerySolution querySolution) { |
| if ( querySolution != null ) { |
| Binding binding = BindingLib.toBinding(querySolution); |
| initialBinding(binding); |
| } |
| return this; |
| } |
| |
| @Override |
| public QueryExecutionDatasetBuilder substitution(QuerySolution querySolution) { |
| if ( querySolution != null ) { |
| Binding binding = BindingLib.toBinding(querySolution); |
| builder.substitution(binding); |
| } |
| return this; |
| } |
| |
| public QueryExecutionDatasetBuilder substitution(Binding binding) { |
| builder.substitution(binding); |
| return this; |
| } |
| |
| @Override |
| public QueryExecutionDatasetBuilder substitution(String varName, RDFNode value) { |
| Var var = Var.alloc(varName); |
| Node val = value.asNode(); |
| builder.substitution(var, val); |
| return this; |
| } |
| |
| @Override |
| public QueryExecutionDatasetBuilder timeout(long value, TimeUnit timeUnit) { |
| builder.timeout(value, timeUnit); |
| return this; |
| } |
| |
| /** The time-to-first result timeout. */ |
| public QueryExecutionDatasetBuilder initialTimeout(long value, TimeUnit timeUnit) { |
| builder.initialTimeout(value, timeUnit); |
| return this; |
| } |
| |
| /** The overall, start-to-finish timeout, to go with an initial timeout. */ |
| public QueryExecutionDatasetBuilder overallTimeout(long value, TimeUnit timeUnit) { |
| builder.overallTimeout(value, timeUnit); |
| return this; |
| } |
| |
| @Override |
| public QueryExecution build() { |
| // QueryExecutionCompat delays creating the execution (builder.build) until |
| // it is required so that setters in QueryExecution |
| // (setInitialBinding/setTimeout*) act on the QueryExec builder. |
| return QueryExecutionCompat.compatibility(builder, dataset, builder.getQuery(), builder.getQueryString()); |
| } |
| |
| // ==> BindingUtils |
| /** Binding as a Map */ |
| public static Map<Var, Node> bindingToMap(Binding binding) { |
| Map<Var, Node> substitutions = new HashMap<>(); |
| Iterator<Var> iter = binding.vars(); |
| while(iter.hasNext()) { |
| Var v = iter.next(); |
| Node n = binding.get(v); |
| substitutions.put(v, n); |
| } |
| return substitutions; |
| } |
| } |