Examples of org.apache.flink.api.java.tuple.Tuple

org.apache.flink.api.java.tuple.Tuple
The base class of all tuples. Tuples have a fix length and contain a set of fields, which may all be of different types. Because Tuples are strongly typed, each distinct tuple length is represented by its own class. Tuples exists with up to 25 fields and are described in the classes {@link Tuple1} to {@link Tuple25}.
The fields in the tuples may be accessed directly a public fields, or via position (zero indexed) {@link #getField(int)}.
Tuples are in principle serializable. However, they may contain non-serializable fields, in which case serialization will fail.

    edgesUsed = true;
    
    outValue.f1 = m;
    
    while (edges.hasNext()) {
      Tuple next = (Tuple) edges.next();
      VertexKey k = next.getField(1);
      outValue.f0 = k;
      out.collect(outValue);
    }
  }

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  private <X> TypeInformation<X> privateGetForObject(X value) {
    Validate.notNull(value);
    
    // check if we can extract the types from tuples, otherwise work with the class
    if (value instanceof Tuple) {
      Tuple t = (Tuple) value;
      int numFields = t.getArity();
      if(numFields != countFieldsInClass(value.getClass())) {
        // not a tuple since it has more fields. 
        return analyzePojo((Class<X>) value.getClass(), new ArrayList<Type>(), null); // we immediately call analyze Pojo here, because
        // there is currently no other type that can handle such a class.
      }
      
      TypeInformation<?>[] infos = new TypeInformation[numFields];
      for (int i = 0; i < numFields; i++) {
        Object field = t.getField(i);
        
        if (field == null) {
          throw new InvalidTypesException("Automatic type extraction is not possible on candidates with null values. "
              + "Please specify the types directly.");
        }

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  @SuppressWarnings("unchecked")
  @Override
  public T reduce(T value1, T value2) throws Exception {
    if (isTuple) {
      Tuple t1 = (Tuple) value1;
      Tuple t2 = (Tuple) value2;


      compare(t1, t2);


      return (T) returnTuple;
    } else if (isArray) {

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  @SuppressWarnings("unchecked")
  @Override
  public T reduce(T value1, T value2) throws Exception {
    if (isTuple) {
      Tuple tuple1 = (Tuple) value1;
      Tuple tuple2 = (Tuple) value2;


      returnTuple = tuple2;
      returnTuple.setField(add(tuple1.getField(position), tuple2.getField(position)),
          position);


      return (T) returnTuple;
    } else if (isArray) {
      Object v1 = Array.get(value1, position);

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    if (expected.length != found.length) {
      Assert.assertEquals("Length of result is wrong", expected.length, found.length);
    }
    
    for (int i = 0; i < expected.length; i++) {
      Tuple v1 = (Tuple) expected[i];
      Tuple v2 = (Tuple) found[i];
      
      for (int k = 0; k < v1.getArity(); k++) {
        Object o1 = v1.getField(k);
        Object o2 = v2.getField(k);
        Assert.assertEquals(o1, o2);
      }
    }
  }

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