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1   /*
2    * Copyright (c) 2011.  The Apache Software Foundation
3    *
4    * Licensed to the Apache Software Foundation (ASF) under one
5    * or more contributor license agreements.  See the NOTICE file
6    * distributed with this work for additional information
7    * regarding copyright ownership.  The ASF licenses this file
8    * to you under the Apache License, Version 2.0 (the
9    * "License"); you may not use this file except in compliance
10   * with the License.  You may obtain a copy of the License at
11   *
12   *     http://www.apache.org/licenses/LICENSE-2.0
13   *
14   * Unless required by applicable law or agreed to in writing, software
15   * distributed under the License is distributed on an "AS IS" BASIS,
16   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17   * See the License for the specific language governing permissions and
18   * limitations under the License.
19   */
20  
21  package org.apache.hadoop.hbase.hbql.impl;
22  
23  import org.apache.hadoop.hbase.client.ResultScanner;
24  import org.apache.hadoop.hbase.hbql.client.HBqlException;
25  
26  public class ResultScannerExecutor extends CompletionQueueExecutor<ResultScanner> {
27  
28      public ResultScannerExecutor(final QueryExecutorPoolImpl executorPool,
29                                   final int minThreadCount,
30                                   final int maxThreadCount,
31                                   final long keepAliveSecs,
32                                   final int completionQueueSize) throws HBqlException {
33          super(executorPool, minThreadCount, maxThreadCount, keepAliveSecs, completionQueueSize);
34      }
35  
36      public static ResultScannerExecutor newPooledResultScannerExecutor(final QueryExecutorPoolImpl executorPool,
37                                                                         final int minThreadCount,
38                                                                         final int maxThreadCount,
39                                                                         final long keepAliveSecs,
40                                                                         final int completionQueueSize) throws HBqlException {
41          return new ResultScannerExecutor(executorPool, minThreadCount, maxThreadCount, keepAliveSecs, completionQueueSize);
42      }
43  
44      public static ResultScannerExecutor newResultScannerExecutor(final int minThreadCount,
45                                                                   final int maxThreadCount,
46                                                                   final long keepAliveSecs,
47                                                                   final int completionQueueSize) throws HBqlException {
48          return new ResultScannerExecutor(null, minThreadCount, maxThreadCount, keepAliveSecs, completionQueueSize);
49      }
50  
51      public boolean threadsReadResults() {
52          return false;
53      }
54  }