| /* |
| * 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.hive.schema; |
| |
| import java.util.Collection; |
| import java.util.Collections; |
| import java.util.Map; |
| import java.util.Set; |
| |
| import org.apache.calcite.schema.Table; |
| import org.apache.drill.exec.store.AbstractSchema; |
| import org.apache.drill.exec.store.SchemaConfig; |
| import org.apache.drill.exec.store.hive.client.DrillHiveMetaStoreClient; |
| import org.apache.drill.exec.store.hive.HiveStoragePluginConfig; |
| import org.apache.drill.exec.store.hive.schema.HiveSchemaFactory.HiveSchema; |
| import org.apache.thrift.TException; |
| |
| public class HiveDatabaseSchema extends AbstractSchema { |
| |
| private static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(HiveDatabaseSchema.class); |
| |
| private final HiveSchema hiveSchema; |
| |
| private Map<String, TableType> tables; |
| |
| private final DrillHiveMetaStoreClient mClient; |
| |
| private final SchemaConfig schemaConfig; |
| |
| public HiveDatabaseSchema( |
| HiveSchema hiveSchema, |
| String name, |
| DrillHiveMetaStoreClient mClient, |
| SchemaConfig schemaConfig) { |
| super(hiveSchema.getSchemaPath(), name); |
| this.hiveSchema = hiveSchema; |
| this.mClient = mClient; |
| this.schemaConfig = schemaConfig; |
| } |
| |
| @Override |
| public Table getTable(String tableName) { |
| return hiveSchema.getDrillTable(this.name, tableName); |
| } |
| |
| @Override |
| public Collection<Map.Entry<String, TableType>> getTableNamesAndTypes() { |
| ensureInitTables(); |
| return tables.entrySet(); |
| } |
| |
| @Override |
| public Set<String> getTableNames() { |
| ensureInitTables(); |
| return tables.keySet(); |
| } |
| |
| private void ensureInitTables() { |
| if (tables == null) { |
| try { |
| tables = mClient.getTableNamesAndTypes(this.name, schemaConfig.getIgnoreAuthErrors()); |
| } catch (TException e) { |
| logger.warn(String.format( |
| "Exception was thrown while getting table names and type for db '%s'.", this.name), e); |
| tables = Collections.emptyMap(); |
| } |
| } |
| } |
| |
| @Override |
| public String getTypeName() { |
| return HiveStoragePluginConfig.NAME; |
| } |
| |
| @Override |
| public boolean areTableNamesCaseSensitive() { |
| return false; |
| } |
| |
| } |