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<FONT color="green">001</FONT>    <a name="line.17"></a>
<FONT color="green">018</FONT>    <a name="line.18"></a>
<FONT color="green">019</FONT>    package org.apache.hadoop.mapreduce.lib.input;<a name="line.19"></a>
<FONT color="green">020</FONT>    <a name="line.20"></a>
<FONT color="green">021</FONT>    import java.io.IOException;<a name="line.21"></a>
<FONT color="green">022</FONT>    <a name="line.22"></a>
<FONT color="green">023</FONT>    import org.apache.hadoop.classification.InterfaceAudience;<a name="line.23"></a>
<FONT color="green">024</FONT>    import org.apache.hadoop.classification.InterfaceStability;<a name="line.24"></a>
<FONT color="green">025</FONT>    import org.apache.hadoop.io.Text;<a name="line.25"></a>
<FONT color="green">026</FONT>    import org.apache.hadoop.io.Writable;<a name="line.26"></a>
<FONT color="green">027</FONT>    import org.apache.hadoop.io.WritableComparable;<a name="line.27"></a>
<FONT color="green">028</FONT>    import org.apache.hadoop.mapreduce.InputSplit;<a name="line.28"></a>
<FONT color="green">029</FONT>    import org.apache.hadoop.mapreduce.RecordReader;<a name="line.29"></a>
<FONT color="green">030</FONT>    import org.apache.hadoop.mapreduce.TaskAttemptContext;<a name="line.30"></a>
<FONT color="green">031</FONT>    <a name="line.31"></a>
<FONT color="green">032</FONT>    /**<a name="line.32"></a>
<FONT color="green">033</FONT>     * This class converts the input keys and values to their String forms by<a name="line.33"></a>
<FONT color="green">034</FONT>     * calling toString() method. This class to SequenceFileAsTextInputFormat<a name="line.34"></a>
<FONT color="green">035</FONT>     * class is as LineRecordReader class to TextInputFormat class.<a name="line.35"></a>
<FONT color="green">036</FONT>     */<a name="line.36"></a>
<FONT color="green">037</FONT>    @InterfaceAudience.Public<a name="line.37"></a>
<FONT color="green">038</FONT>    @InterfaceStability.Stable<a name="line.38"></a>
<FONT color="green">039</FONT>    public class SequenceFileAsTextRecordReader<a name="line.39"></a>
<FONT color="green">040</FONT>      extends RecordReader&lt;Text, Text&gt; {<a name="line.40"></a>
<FONT color="green">041</FONT>      <a name="line.41"></a>
<FONT color="green">042</FONT>      private final SequenceFileRecordReader&lt;WritableComparable&lt;?&gt;, Writable&gt;<a name="line.42"></a>
<FONT color="green">043</FONT>        sequenceFileRecordReader;<a name="line.43"></a>
<FONT color="green">044</FONT>    <a name="line.44"></a>
<FONT color="green">045</FONT>      private Text key;<a name="line.45"></a>
<FONT color="green">046</FONT>      private Text value;<a name="line.46"></a>
<FONT color="green">047</FONT>    <a name="line.47"></a>
<FONT color="green">048</FONT>      public SequenceFileAsTextRecordReader()<a name="line.48"></a>
<FONT color="green">049</FONT>        throws IOException {<a name="line.49"></a>
<FONT color="green">050</FONT>        sequenceFileRecordReader =<a name="line.50"></a>
<FONT color="green">051</FONT>          new SequenceFileRecordReader&lt;WritableComparable&lt;?&gt;, Writable&gt;();<a name="line.51"></a>
<FONT color="green">052</FONT>      }<a name="line.52"></a>
<FONT color="green">053</FONT>    <a name="line.53"></a>
<FONT color="green">054</FONT>      public void initialize(InputSplit split, TaskAttemptContext context)<a name="line.54"></a>
<FONT color="green">055</FONT>          throws IOException, InterruptedException {<a name="line.55"></a>
<FONT color="green">056</FONT>        sequenceFileRecordReader.initialize(split, context);<a name="line.56"></a>
<FONT color="green">057</FONT>      }<a name="line.57"></a>
<FONT color="green">058</FONT>    <a name="line.58"></a>
<FONT color="green">059</FONT>      @Override<a name="line.59"></a>
<FONT color="green">060</FONT>      public Text getCurrentKey() <a name="line.60"></a>
<FONT color="green">061</FONT>          throws IOException, InterruptedException {<a name="line.61"></a>
<FONT color="green">062</FONT>        return key;<a name="line.62"></a>
<FONT color="green">063</FONT>      }<a name="line.63"></a>
<FONT color="green">064</FONT>      <a name="line.64"></a>
<FONT color="green">065</FONT>      @Override<a name="line.65"></a>
<FONT color="green">066</FONT>      public Text getCurrentValue() <a name="line.66"></a>
<FONT color="green">067</FONT>          throws IOException, InterruptedException {<a name="line.67"></a>
<FONT color="green">068</FONT>        return value;<a name="line.68"></a>
<FONT color="green">069</FONT>      }<a name="line.69"></a>
<FONT color="green">070</FONT>      <a name="line.70"></a>
<FONT color="green">071</FONT>      /** Read key/value pair in a line. */<a name="line.71"></a>
<FONT color="green">072</FONT>      public synchronized boolean nextKeyValue() <a name="line.72"></a>
<FONT color="green">073</FONT>          throws IOException, InterruptedException {<a name="line.73"></a>
<FONT color="green">074</FONT>        if (!sequenceFileRecordReader.nextKeyValue()) {<a name="line.74"></a>
<FONT color="green">075</FONT>          return false;<a name="line.75"></a>
<FONT color="green">076</FONT>        }<a name="line.76"></a>
<FONT color="green">077</FONT>        if (key == null) {<a name="line.77"></a>
<FONT color="green">078</FONT>          key = new Text(); <a name="line.78"></a>
<FONT color="green">079</FONT>        }<a name="line.79"></a>
<FONT color="green">080</FONT>        if (value == null) {<a name="line.80"></a>
<FONT color="green">081</FONT>          value = new Text(); <a name="line.81"></a>
<FONT color="green">082</FONT>        }<a name="line.82"></a>
<FONT color="green">083</FONT>        key.set(sequenceFileRecordReader.getCurrentKey().toString());<a name="line.83"></a>
<FONT color="green">084</FONT>        value.set(sequenceFileRecordReader.getCurrentValue().toString());<a name="line.84"></a>
<FONT color="green">085</FONT>        return true;<a name="line.85"></a>
<FONT color="green">086</FONT>      }<a name="line.86"></a>
<FONT color="green">087</FONT>      <a name="line.87"></a>
<FONT color="green">088</FONT>      public float getProgress() throws IOException,  InterruptedException {<a name="line.88"></a>
<FONT color="green">089</FONT>        return sequenceFileRecordReader.getProgress();<a name="line.89"></a>
<FONT color="green">090</FONT>      }<a name="line.90"></a>
<FONT color="green">091</FONT>      <a name="line.91"></a>
<FONT color="green">092</FONT>      public synchronized void close() throws IOException {<a name="line.92"></a>
<FONT color="green">093</FONT>        sequenceFileRecordReader.close();<a name="line.93"></a>
<FONT color="green">094</FONT>      }<a name="line.94"></a>
<FONT color="green">095</FONT>    }<a name="line.95"></a>




























































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