PageRenderTime 27ms CodeModel.GetById 18ms app.highlight 6ms RepoModel.GetById 1ms app.codeStats 0ms

/tags/release-0.0.0-rc0/hive/external/ql/src/java/org/apache/hadoop/hive/ql/exec/TextRecordReader.java

#
Java | 64 lines | 33 code | 10 blank | 21 comment | 4 complexity | 5902e3be2700c5df5d97d293302cddc3 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.exec;
20
21import java.io.IOException;
22import java.io.InputStream;
23import java.util.Properties;
24
25import org.apache.hadoop.conf.Configuration;
26import org.apache.hadoop.io.Text;
27import org.apache.hadoop.io.Writable;
28import org.apache.hadoop.mapred.LineRecordReader.LineReader;
29
30/**
31 * TextRecordReader.
32 *
33 */
34public class TextRecordReader implements RecordReader {
35
36  private LineReader lineReader;
37  private InputStream in;
38  private Text row;
39
40  public void initialize(InputStream in, Configuration conf, Properties tbl)
41      throws IOException {
42    lineReader = new LineReader(in, conf);
43    this.in = in;
44  }
45
46  public Writable createRow() throws IOException {
47    row = new Text();
48    return row;
49  }
50
51  public int next(Writable row) throws IOException {
52    if (lineReader == null) {
53      return -1;
54    }
55
56    return lineReader.readLine((Text) row);
57  }
58
59  public void close() throws IOException {
60    if (in != null) {
61      in.close();
62    }
63  }
64}