| /* |
| * 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 |
| * <p> |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * <p> |
| * 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.hadoop.hive.metastore; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.hive.serde2.Deserializer; |
| import org.apache.hadoop.hive.metastore.api.EnvironmentContext; |
| import org.apache.hadoop.hive.metastore.api.FieldSchema; |
| import org.apache.hadoop.hive.metastore.api.MetaException; |
| import org.apache.hadoop.hive.metastore.api.Table; |
| |
| import java.util.List; |
| |
| public class SerDeStorageSchemaReader implements StorageSchemaReader { |
| @Override |
| public List<FieldSchema> readSchema(Table tbl, EnvironmentContext envContext, Configuration conf) |
| throws MetaException { |
| ClassLoader orgHiveLoader = null; |
| try { |
| if (envContext != null) { |
| String addedJars = envContext.getProperties().get("hive.added.jars.path"); |
| if (org.apache.commons.lang3.StringUtils.isNotBlank(addedJars)) { |
| //for thread safe |
| orgHiveLoader = conf.getClassLoader(); |
| ClassLoader loader = org.apache.hadoop.hive.metastore.utils.MetaStoreUtils.addToClassPath( |
| orgHiveLoader, org.apache.commons.lang3.StringUtils.split(addedJars, ",")); |
| conf.setClassLoader(loader); |
| } |
| } |
| |
| Deserializer s = HiveMetaStoreUtils.getDeserializer(conf, tbl, null, false); |
| return HiveMetaStoreUtils.getFieldsFromDeserializer(tbl.getTableName(), s, conf); |
| } catch (Exception e) { |
| throw new MetaException(e.getMessage()); |
| } finally { |
| if (orgHiveLoader != null) { |
| conf.setClassLoader(orgHiveLoader); |
| } |
| } |
| } |
| } |