| /* |
| * 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.elasticsearch.schema; |
| |
| import org.apache.calcite.linq4j.tree.Expression; |
| import org.apache.calcite.schema.Schema; |
| import org.apache.calcite.schema.SchemaPlus; |
| 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.StoragePlugin; |
| import org.apache.drill.exec.store.elasticsearch.ElasticsearchStorageConfig; |
| |
| import java.util.Collections; |
| import java.util.Map; |
| import java.util.Set; |
| import java.util.concurrent.ConcurrentHashMap; |
| |
| public class ElasticsearchDrillSchema extends AbstractSchema { |
| private final Schema delegatingSchema; |
| private final StoragePlugin plugin; |
| private final Map<String, Table> tables = new ConcurrentHashMap<>(); |
| |
| public ElasticsearchDrillSchema(String name, StoragePlugin plugin, Schema delegatingSchema) { |
| super(Collections.emptyList(), name); |
| this.plugin = plugin; |
| this.delegatingSchema = delegatingSchema; |
| } |
| |
| @Override |
| public String getTypeName() { |
| return ElasticsearchStorageConfig.NAME; |
| } |
| |
| @Override |
| public Table getTable(String tableName) { |
| return tables.computeIfAbsent(tableName, this::getDrillTable); |
| } |
| |
| private DrillTable getDrillTable(String tableName) { |
| Table table = delegatingSchema.getTable(tableName); |
| return table == null ? null |
| : new ElasticsearchDynamicTable(plugin, tableName, null, table); |
| } |
| |
| @Override |
| public Set<String> getTableNames() { |
| return delegatingSchema.getTableNames(); |
| } |
| |
| @Override |
| public Expression getExpression(SchemaPlus parentSchema, String name) { |
| return delegatingSchema.getExpression(parentSchema, name); |
| } |
| } |