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/tags/release-0.0.0-rc0/hive/external/ql/src/java/org/apache/hadoop/hive/ql/processors/AddResourceProcessor.java

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Java | 59 lines | 31 code | 7 blank | 21 comment | 4 complexity | fa05ba977cd1924b95953eef6820e2b0 MD5 | raw file
 1/**
 2 * Licensed to the Apache Software Foundation (ASF) under one
 3 * or more contributor license agreements.  See the NOTICE file
 4 * distributed with this work for additional information
 5 * regarding copyright ownership.  The ASF licenses this file
 6 * to you under the Apache License, Version 2.0 (the
 7 * "License"); you may not use this file except in compliance
 8 * with the License.  You may obtain a copy of the License at
 9 *
10 *     http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 */
18
19package org.apache.hadoop.hive.ql.processors;
20
21import org.apache.commons.lang.StringUtils;
22import org.apache.commons.logging.Log;
23import org.apache.commons.logging.LogFactory;
24import org.apache.hadoop.hive.ql.parse.VariableSubstitution;
25import org.apache.hadoop.hive.ql.session.SessionState;
26import org.apache.hadoop.hive.ql.session.SessionState.LogHelper;
27
28/**
29 * AddResourceProcessor.
30 *
31 */
32public class AddResourceProcessor implements CommandProcessor {
33
34  public static final Log LOG = LogFactory.getLog(AddResourceProcessor.class
35      .getName());
36  public static final LogHelper console = new LogHelper(LOG);
37
38  public void init() {
39  }
40
41  public CommandProcessorResponse run(String command) {
42    SessionState ss = SessionState.get();
43    command = new VariableSubstitution().substitute(ss.getConf(),command);
44    String[] tokens = command.split("\\s+");
45    SessionState.ResourceType t;
46    if (tokens.length < 2
47        || (t = SessionState.find_resource_type(tokens[0])) == null) {
48      console.printError("Usage: add ["
49          + StringUtils.join(SessionState.ResourceType.values(), "|")
50          + "] <value> [<value>]*");
51      return new CommandProcessorResponse(1);
52    }
53    for (int i = 1; i < tokens.length; i++) {
54      ss.add_resource(t, tokens[i]);
55    }
56    return new CommandProcessorResponse(0);
57  }
58
59}