@Override
public long next(HdfsInputStream hdfsistr, Holder<Object> key, Holder<Object> value) {
try {
ArrayFile.Reader reader = (ArrayFile.Reader) hdfsistr.getIn();
Holder<Integer> valueSize = new Holder<Integer>();
Writable valueWritable =
(Writable) ReflectionUtils.newInstance(reader.getValueClass(), new Configuration());
if (reader.next(valueWritable) != null) {
value.value = getObject(valueWritable, valueSize);
return valueSize.value;
} else {
return 0;
}
} catch (Exception ex) {
throw new RuntimeCamelException(ex);
}
}
public static void main(String argv[]) throws Exception {
String usage = "Content (-local | -dfs <namenode:port>) recno segment";
if (argv.length < 3) {
System.out.println("usage:" + usage);
return;
}
Options opts = new Options();
Configuration conf = NutchConfiguration.create();
GenericOptionsParser parser = new GenericOptionsParser(conf, opts, argv);
String[] remainingArgs = parser.getRemainingArgs();
FileSystem fs = FileSystem.get(conf);
try {
int recno = Integer.parseInt(remainingArgs[0]);
String segment = remainingArgs[1];
Path file = new Path(segment, DIR_NAME);
System.out.println("Reading from file: " + file);
ArrayFile.Reader contents = new ArrayFile.Reader(fs, file.toString(), conf);
Content content = new Content();
contents.get(recno, content);
System.out.println("Retrieved " + recno + " from file " + file);
System.out.println(content);
contents.close();
} finally {
fs.close();
}
}
