List of createScanner() Examples

Examples of createScanner()

org.apache.accumulo.core.client.Connector.createScanner()
Factory method to create a Scanner connected to Accumulo. @param tableName the name of the table to query data from @param authorizations A set of authorization labels that will be checked against the column visibility of each key in order to filter data. The authorizations passed in must be a subset of the accumulo user's set of authorizations. If the accumulo user has authorizations (A1, A2) and authorizations (A2, A3) are passed, then an exception will be thrown. @return Scanner object for configuring and querying data with @throws TableNotFoundException when the specified table doesn't exist
org.apache.accumulo.proxy.thrift.AccumuloProxy.Client.createScanner()
org.apache.hadoop.io.file.tfile.TFile.Reader.createScanner()
org.apache.hadoop.zebra.tfile.TFile.Reader.createScanner()
org.erlide.engine.model.erlang.IErlModule.createScanner()
org.jvyaml.DefaultYAMLFactory.createScanner()
org.jvyaml.YAMLFactory.createScanner()

Examples of org.apache.hadoop.io.file.tfile.TFile.Reader.createScanner()

  }


  public void testFailureSeek() throws IOException {
    Reader reader =
        new Reader(fs.open(path), fs.getFileStatus(path).getLen(), conf);
    Scanner scanner = reader.createScanner();


    try {
      // can't find ceil
      try {
        scanner.lowerBound("keyN".getBytes());

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Examples of org.apache.hadoop.io.file.tfile.TFile.Reader.createScanner()

    if (skip)
      return;
    writeRecords(2, true, true);


    Reader reader = new Reader(fs.open(path), fs.getFileStatus(path).getLen(), conf);
    Scanner scanner = reader.createScanner();
    byte[] buf = new byte[K];
    try {
      scanner.entry().getKey(buf, -1);
      Assert.fail("Failed to handle key negative offset.");
    }

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Examples of org.apache.hadoop.io.file.tfile.TFile.Reader.createScanner()

      return;
    closeOutput();


    Reader reader = new Reader(fs.open(path), fs.getFileStatus(path).getLen(), conf);
    Assert.assertTrue(reader.isSorted());
    Scanner scanner = reader.createScanner();
    Assert.assertTrue(scanner.atEnd());
    scanner.close();
    reader.close();
  }

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Examples of org.apache.hadoop.io.file.tfile.TFile.Reader.createScanner()

  public void testLocate() throws IOException {
    if (skip)
      return;
    writeRecords(3 * records1stBlock);
    Reader reader = new Reader(fs.open(path), fs.getFileStatus(path).getLen(), conf);
    Scanner scanner = reader.createScanner();
    locate(scanner, composeSortedKey(KEY, 2).getBytes());
    locate(scanner, composeSortedKey(KEY, records1stBlock - 1).getBytes());
    locate(scanner, composeSortedKey(KEY, records1stBlock).getBytes());
    Location locX = locate(scanner, "keyX".getBytes());
    Assert.assertEquals(scanner.endLocation, locX);

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Examples of org.apache.hadoop.io.file.tfile.TFile.Reader.createScanner()

    if (skip)
      return;
    writeRecords(5);


    Reader reader = new Reader(fs.open(path), fs.getFileStatus(path).getLen(), conf);
    Scanner scanner = reader.createScanner();


    byte[] vbuf = new byte[BUF_SIZE];
    int vlen = scanner.entry().getValueLength();
    scanner.entry().getValue(vbuf);
    Assert.assertEquals(new String(vbuf, 0, vlen), VALUE + 0);

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Examples of org.apache.hadoop.io.file.tfile.TFile.Reader.createScanner()

    if (skip)
      return;
    closeOutput();


    Reader reader = new Reader(fs.open(path), fs.getFileStatus(path).getLen(), conf);
    Scanner scanner = reader.createScanner();
    try {
      scanner.lowerBound("keyX".getBytes(), -1, 4);
      Assert.fail("Error on handling negative offset.");
    } catch (Exception e) {
      // noop, expecting exceptions

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Examples of org.apache.hadoop.io.file.tfile.TFile.Reader.createScanner()

    if (skip)
      return;
    closeOutput();


    Reader reader = new Reader(fs.open(path), fs.getFileStatus(path).getLen(), conf);
    Scanner scanner = reader.createScanner();
    try {
      scanner.lowerBound("keyX".getBytes(), 0, -1);
      Assert.fail("Error on handling negative length.");
    } catch (Exception e) {
      // noop, expecting exceptions

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Examples of org.apache.hadoop.io.file.tfile.TFile.Reader.createScanner()

      return;
    writeRecords(3);


    Reader reader =
        new Reader(fs.open(path), fs.getFileStatus(path).getLen(), conf);
    Scanner scanner = reader.createScanner();
    try {
      // test negative array offset
      try {
        scanner.seekTo("keyY".getBytes(), -1, 4);
        Assert.fail("Failed to handle negative offset.");

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Examples of org.apache.hadoop.io.file.tfile.TFile.Reader.createScanner()


  static void readRecords(FileSystem fs, Path path, int count,
      Configuration conf) throws IOException {
    Reader reader =
        new Reader(fs.open(path), fs.getFileStatus(path).getLen(), conf);
    Scanner scanner = reader.createScanner();


    try {
      for (int nx = 0; nx < count; nx++, scanner.advance()) {
        Assert.assertFalse(scanner.atEnd());
        // Assert.assertTrue(scanner.next());

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Examples of org.apache.hadoop.io.file.tfile.TFile.Reader.createScanner()

    }
  }


  private void checkBlockIndex(int recordIndex, int blockIndexExpected) throws IOException {
    Reader reader = new Reader(fs.open(path), fs.getFileStatus(path).getLen(), conf);
    Scanner scanner = reader.createScanner();
    scanner.seekTo(composeSortedKey(KEY, recordIndex).getBytes());
    Assert.assertEquals(blockIndexExpected, scanner.currentLocation
        .getBlockIndex());
    scanner.close();
    reader.close();

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