Examples of org.apache.hadoop.io.ObjectWritable$NullInstance

org.apache.hadoop.io.ObjectWritable
A polymorphic Writable that writes an instance with it's class name. Handles arrays, strings and primitive types without a Writable wrapper.

      long startTime = 0;
      if (logDebug) {
        startTime = System.currentTimeMillis();
      }


      ObjectWritable value = (ObjectWritable) client.call(new Invocation(
          method, args), remoteId);
      if (logDebug) {
        long callTime = System.currentTimeMillis() - startTime;
        LOG.debug("Call: " + method.getName() + " " + callTime);
      }
      return value.get();
    }

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  @Override
  public final void add(M item) {
    size++;
    try {
      new ObjectWritable(item).write(writer);
    } catch (IOException e) {
      LOG.error(e);
    }
  }

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     */
    public void map(Text key, Writable value,
      OutputCollector<Text, ObjectWritable> output, Reporter reporter)
      throws IOException {


      ObjectWritable objWrite = new ObjectWritable();
      objWrite.set(value);
      output.collect(key, objWrite);
    }

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      Node node = null;
      LoopSet loops = null;


      // aggregate outlinks, assign other values
      while (values.hasNext()) {
        ObjectWritable write = values.next();
        Object obj = write.get();
        if (obj instanceof Node) {
          node = (Node)obj;
        }
        else if (obj instanceof LinkDatum) {
          outlinks.add((LinkDatum)WritableUtils.clone((LinkDatum)obj, conf));

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     */
    public void map(Text key, Writable value,
      OutputCollector<Text, ObjectWritable> output, Reporter reporter)
      throws IOException {


      ObjectWritable objWrite = new ObjectWritable();
      objWrite.set(WritableUtils.clone(value, conf));
      output.collect(key, objWrite);
    }

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      int numInlinks = 0;
      float totalInlinkScore = rankOne;


      while (values.hasNext()) {


        ObjectWritable next = values.next();
        Object value = next.get();
        if (value instanceof Node) {
          node = (Node)value;
        }
        else if (value instanceof LinkDatum) {

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     * Wraps values in ObjectWritable.
     */
    public void map(Text key, Writable value,
      OutputCollector<Text, ObjectWritable> output, Reporter reporter)
      throws IOException {
      ObjectWritable objWrite = new ObjectWritable();
      objWrite.set(value);
      output.collect(key, objWrite);
    }

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      List<FieldWritable> fieldsList = new ArrayList<FieldWritable>();


      // assign values, url must be successfully fetched and parsed
      while (values.hasNext()) {


        ObjectWritable objWrite = values.next();
        Object value = objWrite.get();
        if (value instanceof CrawlDatum) {
          CrawlDatum datum = (CrawlDatum)value;
          if (datum.getStatus() == CrawlDatum.STATUS_FETCH_SUCCESS) {
            fetchDatums.add(datum);
          }

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     */
    public void map(Text key, Writable value,
      OutputCollector<Text, ObjectWritable> output, Reporter reporter)
      throws IOException {


      ObjectWritable objWrite = new ObjectWritable();
      objWrite.set(value);
      output.collect(key, objWrite);
    }

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      Node node = null;
      LoopSet loops = null;


      // loop through all values aggregating outlinks, saving node and loopset
      while (values.hasNext()) {
        ObjectWritable write = values.next();
        Object obj = write.get();
        if (obj instanceof Node) {
          node = (Node)obj;
        }
        else if (obj instanceof LinkDatum) {
          outlinks.add((LinkDatum)WritableUtils.clone((LinkDatum)obj, conf));

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