| /* |
| * 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.drill.exec.store.mongo; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Map.Entry; |
| |
| import com.google.common.collect.Lists; |
| import com.google.common.collect.Maps; |
| import org.bson.Document; |
| |
| public class MongoUtils { |
| |
| public static Document andFilterAtIndex(Document leftFilter, |
| Document rightFilter) { |
| Document andQueryFilter = new Document(); |
| List<Document> filters = new ArrayList<Document>(); |
| filters.add(leftFilter); |
| filters.add(rightFilter); |
| andQueryFilter.put("$and", filters); |
| return andQueryFilter; |
| } |
| |
| public static Document orFilterAtIndex(Document leftFilter, |
| Document rightFilter) { |
| Document orQueryFilter = new Document(); |
| List<Document> filters = new ArrayList<Document>(); |
| filters.add(leftFilter); |
| filters.add(rightFilter); |
| orQueryFilter.put("$or", filters); |
| return orQueryFilter; |
| } |
| |
| public static Map<String, List<Document>> mergeFilters( |
| Map<String, Object> minFilters, Map<String, Object> maxFilters) { |
| Map<String, List<Document>> filters = Maps.newHashMap(); |
| |
| for (Entry<String, Object> entry : minFilters.entrySet()) { |
| List<Document> list = filters.get(entry.getKey()); |
| if (list == null) { |
| list = Lists.newArrayList(); |
| filters.put(entry.getKey(), list); |
| } |
| list.add(new Document(entry.getKey(), new Document("$gte", |
| entry.getValue()))); |
| } |
| |
| for (Entry<String, Object> entry : maxFilters.entrySet()) { |
| List<Document> list = filters.get(entry.getKey()); |
| if (list == null) { |
| list = Lists.newArrayList(); |
| filters.put(entry.getKey(), list); |
| } |
| list.add(new Document(entry.getKey(), new Document("$lt", entry |
| .getValue()))); |
| } |
| return filters; |
| } |
| |
| } |