| /** |
| * 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.rya.indexing.geotemporal; |
| |
| import java.util.ArrayList; |
| import java.util.HashMap; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Set; |
| |
| import org.apache.rya.indexing.external.matching.ExternalSetConverter; |
| import org.apache.rya.indexing.external.matching.JoinSegment; |
| import org.apache.rya.indexing.external.matching.QuerySegment; |
| import org.apache.rya.indexing.geotemporal.model.EventQueryNode; |
| import org.eclipse.rdf4j.query.algebra.Filter; |
| import org.eclipse.rdf4j.query.algebra.QueryModelNode; |
| import org.eclipse.rdf4j.query.algebra.ValueExpr; |
| |
| import com.google.common.base.Preconditions; |
| |
| /** |
| * Implementation of {@link ExternalSetConverter} to convert {@link EventQueryNode}s |
| * to {@link QuerySegment}s. |
| * |
| */ |
| public class GeoTemporalToSegmentConverter implements ExternalSetConverter<EventQueryNode> { |
| @Override |
| public QuerySegment<EventQueryNode> setToSegment(final EventQueryNode set) { |
| Preconditions.checkNotNull(set); |
| final Set<QueryModelNode> matched = new HashSet<>(set.getPatterns()); |
| matched.addAll(set.getFilters()); |
| final List<QueryModelNode> unmatched = new ArrayList<>(set.getPatterns()); |
| return new JoinSegment<EventQueryNode>(matched, unmatched, new HashMap<ValueExpr, Filter>()); |
| } |
| } |