| /* |
| * 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.calcite.jdbc; |
| |
| import org.apache.calcite.schema.Schema; |
| import org.apache.calcite.schema.SchemaPlus; |
| import org.apache.drill.exec.store.SchemaConfig; |
| import org.apache.drill.exec.store.StoragePluginRegistry; |
| |
| |
| /** |
| * Unlike SimpleCalciteSchema, DynamicSchema could have an empty or partial schemaMap, but it could maintain a map of |
| * name->SchemaFactory, and only register schema when the correspondent name is requested. |
| */ |
| public class DynamicSchema extends SimpleCalciteSchema { |
| |
| public DynamicSchema(CalciteSchema parent, Schema schema, String name) { |
| super(parent, schema, name); |
| } |
| |
| @Override |
| protected CalciteSchema getImplicitSubSchema(String schemaName, |
| boolean caseSensitive) { |
| Schema s = schema.getSubSchema(schemaName); |
| if (s != null) { |
| return new DynamicSchema(this, s, schemaName); |
| } |
| CalciteSchema ret = getSubSchemaMap().get(schemaName); |
| return ret; |
| } |
| |
| public static SchemaPlus createRootSchema(StoragePluginRegistry storages, SchemaConfig schemaConfig) { |
| DynamicRootSchema rootSchema = new DynamicRootSchema(storages, schemaConfig); |
| return rootSchema.plus(); |
| } |
| } |