示例#1
0
  public void setData(String text) {
    if (text != null && text.length() > 0) {
      InputStream in = null;
      try {
        Object result = null;
        Drawing drawing = createDrawing();
        // Try to read the data using all known input formats.
        for (InputFormat fmt : drawing.getInputFormats()) {
          try {
            fmt.read(in, drawing);
            in = new ByteArrayInputStream(text.getBytes("UTF8"));
            result = drawing;
            break;
          } catch (IOException e) {
            result = e;
          }
        }
        if (result instanceof IOException) {
          throw (IOException) result;
        }

        setDrawing(drawing);
      } catch (Throwable e) {
        getDrawing().removeAllChildren();
        SVGTextFigure tf = new SVGTextFigure();
        tf.setText(e.getMessage());
        tf.setBounds(new Point2D.Double(10, 10), new Point2D.Double(100, 100));
        getDrawing().add(tf);
        e.printStackTrace();
      } finally {
        if (in != null) {
          try {
            in.close();
          } catch (IOException ex) {
            ex.printStackTrace();
          }
        }
      }
    }
  }
  public void testFormat() throws Exception {
    JobConf job = new JobConf(conf);
    FileSystem fs = FileSystem.getLocal(conf);
    Path dir = new Path(System.getProperty("test.build.data", ".") + "/mapred");
    Path file = new Path(dir, "test.seq");

    Reporter reporter = Reporter.NULL;

    int seed = new Random().nextInt();
    // LOG.info("seed = "+seed);
    Random random = new Random(seed);

    fs.delete(dir, true);

    FileInputFormat.setInputPaths(job, dir);

    // for a variety of lengths
    for (int length = 0; length < MAX_LENGTH; length += random.nextInt(MAX_LENGTH / 10) + 1) {

      // LOG.info("creating; entries = " + length);

      // create a file with length entries
      SequenceFile.Writer writer =
          SequenceFile.createWriter(fs, conf, file, IntWritable.class, BytesWritable.class);
      try {
        for (int i = 0; i < length; i++) {
          IntWritable key = new IntWritable(i);
          byte[] data = new byte[random.nextInt(10)];
          random.nextBytes(data);
          BytesWritable value = new BytesWritable(data);
          writer.append(key, value);
        }
      } finally {
        writer.close();
      }

      // try splitting the file in a variety of sizes
      InputFormat<IntWritable, BytesWritable> format =
          new SequenceFileInputFormat<IntWritable, BytesWritable>();
      IntWritable key = new IntWritable();
      BytesWritable value = new BytesWritable();
      for (int i = 0; i < 3; i++) {
        int numSplits = random.nextInt(MAX_LENGTH / (SequenceFile.SYNC_INTERVAL / 20)) + 1;
        // LOG.info("splitting: requesting = " + numSplits);
        InputSplit[] splits = format.getSplits(job, numSplits);
        // LOG.info("splitting: got =        " + splits.length);

        // check each split
        BitSet bits = new BitSet(length);
        for (int j = 0; j < splits.length; j++) {
          RecordReader<IntWritable, BytesWritable> reader =
              format.getRecordReader(splits[j], job, reporter);
          try {
            int count = 0;
            while (reader.next(key, value)) {
              // if (bits.get(key.get())) {
              // LOG.info("splits["+j+"]="+splits[j]+" : " +
              // key.get());
              // LOG.info("@"+reader.getPos());
              // }
              assertFalse("Key in multiple partitions.", bits.get(key.get()));
              bits.set(key.get());
              count++;
            }
            // LOG.info("splits["+j+"]="+splits[j]+" count=" +
            // count);
          } finally {
            reader.close();
          }
        }
        assertEquals("Some keys in no partition.", length, bits.cardinality());
      }
    }
  }