content: package com.manning.hip.ch3.xml;
  
  
  import org.apache.hadoop.conf.Configuration;
  import org.apache.hadoop.fs.Path;
  import org.apache.hadoop.io.*;
  import org.apache.hadoop.mapreduce.*;
  import org.apache.hadoop.mapreduce.lib.input.FileInputFormat;
  import org.apache.hadoop.mapreduce.lib.output.*;
  import org.slf4j.*;
  
  import javax.xml.stream.*;
  import java.io.*;
  
  import static javax.xml.stream.XMLStreamConstants.*;
  
  public final class HadoopPropertyXMLMapReduce {
    private static final Logger log = LoggerFactory.getLogger
        (HadoopPropertyXMLMapReduce.class);
  
    public static class Map extends Mapper<LongWritable, Text,
        Text, Text> {
  
      @Override
      protected void map(LongWritable key, Text value,
                         Mapper.Context context)
          throws
          IOException, InterruptedException {
        String document = value.toString();
        System.out.println("'" + document + "'");
        try {
          XMLStreamReader reader =
              XMLInputFactory.newInstance().createXMLStreamReader(new
                  ByteArrayInputStream(document.getBytes()));
          String propertyName = "";
          String propertyValue = "";
          String currentElement = "";
          while (reader.hasNext()) {
            int code = reader.next();
            switch (code) {
              case START_ELEMENT:
                currentElement = reader.getLocalName();
                break;
              case CHARACTERS:
                if (currentElement.equalsIgnoreCase("name")) {
                  propertyName += reader.getText();
                } else if (currentElement.equalsIgnoreCase("value")) {
                  propertyValue += reader.getText();
                }
                break;
            }
          }
          reader.close();
          context.write(propertyName.trim(), propertyValue.trim());
        } catch (Exception e) {
          log.error("Error processing '" + document + "'", e);
        }
      }
    }
  
    public static void main(String... args) throws Exception {
      runJob(args[0], args[1]);
    }
  
    public static void runJob(String input,
                              String output)
        throws Exception {
      Configuration conf = new Configuration();
      conf.set("key.value.separator.in.input.line", " ");
      conf.set("xmlinput.start", "<property>");
      conf.set("xmlinput.end", "</property>");
  
      Job job = new Job(conf);
      job.setJarByClass(HadoopPropertyXMLMapReduce.class);
      job.setOutputKeyClass(Text.class);
      job.setOutputValueClass(Text.class);
      job.setMapperClass(Map.class);
      job.setInputFormatClass(XmlInputFormat.class);
      job.setNumReduceTasks(0);
      job.setOutputFormatClass(TextOutputFormat.class);
  
      FileInputFormat.setInputPaths(job, new Path(input));
      Path outPath = new Path(output);
      FileOutputFormat.setOutputPath(job, outPath);
      outPath.getFileSystem(conf).delete(outPath, true);
  
      job.waitForCompletion(true);
    }
  }
  