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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.statement;
22  
23  import org.apache.hadoop.hbase.hbql.client.ExecutionResults;
24  import org.apache.hadoop.hbase.hbql.client.HBqlException;
25  import org.apache.hadoop.hbase.hbql.impl.HConnectionImpl;
26  
27  import java.io.IOException;
28  
29  public class CompactTableStatement extends TableStatement {
30  
31      final boolean isMajor;
32  
33      public CompactTableStatement(final StatementPredicate predicate, final boolean isMajor, final String tableName) {
34          super(predicate, tableName);
35          this.isMajor = isMajor;
36      }
37  
38      protected ExecutionResults execute(final HConnectionImpl conn) throws HBqlException {
39  
40          try {
41              if (isMajor)
42                  conn.getHBaseAdmin().majorCompact(this.getTableName());
43              else
44                  conn.getHBaseAdmin().compact(this.getTableName());
45          }
46          catch (IOException e) {
47              throw new HBqlException(e);
48          }
49          catch (InterruptedException e) {
50              throw new HBqlException(e);
51          }
52  
53          return new ExecutionResults("Table " + this.getTableName() + (isMajor ? " major" : "") + " compacted.");
54      }
55  
56      public static String usage() {
57          return "[MAJOR] COMPACT TABLE table_name [IF bool_expr]";
58      }
59  }