/*
* 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.hadoop.hive.ql.parse.repl.load.message;
import org.apache.commons.lang3.StringUtils;
import org.apache.hadoop.hive.conf.HiveConf;
import org.apache.hadoop.hive.ql.exec.Task;
import org.apache.hadoop.hive.ql.hooks.ReadEntity;
import org.apache.hadoop.hive.ql.hooks.WriteEntity;
import org.apache.hadoop.hive.ql.metadata.Hive;
import org.apache.hadoop.hive.ql.parse.SemanticException;
import org.slf4j.Logger;
import java.io.Serializable;
import java.util.List;
import java.util.Map;
import java.util.Set;
import org.apache.hadoop.hive.ql.parse.repl.load.DumpMetaData;
public interface MessageHandler {
List<Task<? extends Serializable>> handle(Context withinContext) throws SemanticException;
Set<ReadEntity> readEntities();
Set<WriteEntity> writeEntities();
Map<String, Long> tablesUpdated();
Map<String, Long> databasesUpdated();
class Context {
final String dbName, tableName, location;
final Task<? extends Serializable> precursor;
DumpMetaData dmd;
final HiveConf hiveConf;
final Hive db;
final org.apache.hadoop.hive.ql.Context nestedContext;
final Logger log;
public Context(String dbName, String tableName, String location,
Task<? extends Serializable> precursor, DumpMetaData dmd, HiveConf hiveConf,
Hive db, org.apache.hadoop.hive.ql.Context nestedContext, Logger log) {
this.dbName = dbName;
this.tableName = tableName;
this.location = location;
this.precursor = precursor;
this.dmd = dmd;
this.hiveConf = hiveConf;
this.db = db;
this.nestedContext = nestedContext;
this.log = log;
}
public Context(Context other, String dbName, String tableName) {
this.dbName = dbName;
this.tableName = tableName;
this.location = other.location;
this.precursor = other.precursor;
this.dmd = other.dmd;
this.hiveConf = other.hiveConf;
this.db = other.db;
this.nestedContext = other.nestedContext;
this.log = other.log;
}
boolean isTableNameEmpty() {
return StringUtils.isEmpty(tableName);
}
boolean isDbNameEmpty() {
return StringUtils.isEmpty(dbName);
}
}
}