| /* |
| * 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.schema; |
| |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| |
| import org.apache.drill.shaded.guava.com.google.common.collect.Maps; |
| import org.apache.calcite.schema.Table; |
| |
| import org.apache.drill.exec.planner.logical.DrillTable; |
| import org.apache.drill.exec.store.AbstractSchema; |
| import org.apache.drill.exec.store.mongo.MongoStoragePluginConfig; |
| import org.apache.drill.exec.store.mongo.schema.MongoSchemaFactory.MongoSchema; |
| |
| import org.apache.drill.shaded.guava.com.google.common.collect.Sets; |
| |
| public class MongoDatabaseSchema extends AbstractSchema { |
| |
| private final MongoSchema mongoSchema; |
| private final Set<String> tableNames; |
| |
| private final Map<String, DrillTable> drillTables = Maps.newHashMap(); |
| |
| public MongoDatabaseSchema(List<String> tableList, MongoSchema mongoSchema, |
| String name) { |
| super(mongoSchema.getSchemaPath(), name); |
| this.mongoSchema = mongoSchema; |
| this.tableNames = Sets.newHashSet(tableList); |
| } |
| |
| @Override |
| public Table getTable(String tableName) { |
| if (!tableNames.contains(tableName)) { // table does not exist |
| return null; |
| } |
| |
| if (! drillTables.containsKey(tableName)) { |
| drillTables.put(tableName, mongoSchema.getDrillTable(this.name, tableName)); |
| } |
| |
| return drillTables.get(tableName); |
| |
| } |
| |
| @Override |
| public Set<String> getTableNames() { |
| return tableNames; |
| } |
| |
| @Override |
| public String getTypeName() { |
| return MongoStoragePluginConfig.NAME; |
| } |
| |
| } |