Package com.squareup.cascading2.function

Examples of com.squareup.cascading2.function.AbstractExpandProto

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  public void testAsGroupByValue() throws Exception {
    FileSystem.get(new Configuration()).delete(new Path("/tmp/input"), true);
    FileSystem.get(new Configuration()).delete(new Path("/tmp/output"), true);

    Tap t = new Hfs(new ProtobufScheme("value", Example.Person.class), "/tmp/input");
    TupleEntryCollector tec = t.openForWrite(new HadoopFlowProcess(new JobConf()));

    HashSet<Tuple> expectedTuples = new HashSet<Tuple>(){{
      add(new Tuple(Example.Person.newBuilder().setName("bryan").setId(1).build()));
      add(new Tuple(Example.Person.newBuilder().setName("lucas").setId(2).build()));
    }};

    for (Tuple tuple : expectedTuples) {
      tec.add(tuple);
    }

    tec.close();

    Pipe inPipe = new Pipe("input");
    Pipe injectedPipe = new Each(inPipe, Fields.NONE, new Insert(new Fields("key"), 7), new Fields("key", "value"));
    Pipe groupByPipe = new GroupBy(injectedPipe, new Fields("key"));

    Hfs sink = new Hfs(new ProtobufScheme("value", Example.Person.class), "/tmp/output");
    Map<Object, Object> properties = new HashMap<Object, Object>(){{
      put("io.serializations", new JobConf().get("io.serializations") + "," + ProtobufSerialization.class.getName());
    }};
    new HadoopFlowConnector(properties).connect(t, sink, groupByPipe).complete();
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  public void testAsGroupByKey() throws Exception {
    FileSystem.get(new Configuration()).delete(new Path("/tmp/input"), true);
    FileSystem.get(new Configuration()).delete(new Path("/tmp/output"), true);

    Tap t = new Hfs(new ProtobufScheme("value", Example.Person.class), "/tmp/input");
    TupleEntryCollector tec = t.openForWrite(new HadoopFlowProcess(new JobConf()));

    HashSet<Tuple> expectedTuples = new HashSet<Tuple>(){{
      add(new Tuple(Example.Person.newBuilder().setName("bryan").setId(1).build()));
      add(new Tuple(Example.Person.newBuilder().setName("lucas").setId(2).build()));
    }};

    for (Tuple tuple : expectedTuples) {
      tec.add(tuple);
    }

    tec.close();

    Pipe inPipe = new Pipe("input");
    Pipe groupByPipe = new GroupBy(inPipe, new Fields("value"));

    Hfs sink = new Hfs(new ProtobufScheme("value", Example.Person.class), "/tmp/output");
    Map<Object, Object> properties = new HashMap<Object, Object>(){{
      put("io.serializations",
          new JobConf().get("io.serializations") + "," + ProtobufSerialization.class.getName());
    }};
    new HadoopFlowConnector(properties).connect(t, sink, groupByPipe).complete();
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    Pipe p = new Each("input", new ExtractProto(Example.Partnership.class, "leader.name"));

    final String INPUT_PATH = "/tmp/ExtractProtoTest/input";
    final String OUTPUT_PATH = "/tmp/ExtractProtoTest/output";

    Hfs inputTap = new Hfs(new ProtobufScheme("partnership", Example.Partnership.class),
        INPUT_PATH);
    Hfs outputTap = new Hfs(new ProtobufScheme("leader.name", Example.Partnership.class),
        OUTPUT_PATH);

    // make sure the input path exists
    inputTap.openForWrite(new HadoopFlowProcess()).close();
    // make sure the output path does not exist
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  public void testInFlow() throws Exception {
    FileSystem.get(new Configuration()).delete(new Path("/tmp/input"), true);
    FileSystem.get(new Configuration()).delete(new Path("/tmp/output"), true);

    Hfs inTap = new Hfs(new ProtobufScheme("value", Example.Person.class), "/tmp/input");
    TupleEntryCollector collector = inTap.openForWrite(new HadoopFlowProcess());
    collector.add(new TupleEntry(new Fields("value"), new Tuple(BRYAN.build())));
    collector.add(new TupleEntry(new Fields("value"), new Tuple(LUCAS.build())));
    collector.close();
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Related Classes of com.squareup.cascading2.function.AbstractExpandProto

  • cascading.flow.FlowDef
  • cascading.flow.hadoop.HadoopFlowConnector
  • cascading.flow.hadoop.HadoopFlowProcess
  • cascading.operation.FunctionCall
  • cascading.operation.Insert
  • cascading.pipe.Each
  • cascading.pipe.GroupBy
  • cascading.pipe.Pipe
  • cascading.scheme.hadoop.TextLine
  • cascading.tap.hadoop.Hfs
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