org.apache.flink.api.java.typeutils.TupleTypeInfo Java Examples

public Projection(DataSet<T> ds, int[] fieldIndexes) {

			if (!(ds.getType() instanceof TupleTypeInfo)) {
				throw new UnsupportedOperationException("project() can only be applied to DataSets of Tuples.");
			}

			if (fieldIndexes.length == 0) {
				throw new IllegalArgumentException("project() needs to select at least one (1) field.");
			} else if (fieldIndexes.length > Tuple.MAX_ARITY - 1) {
				throw new IllegalArgumentException(
					"project() may select only up to (" + (Tuple.MAX_ARITY - 1) + ") fields.");
			}

			int maxFieldIndex = ds.getType().getArity();
			for (int fieldIndexe : fieldIndexes) {
				Preconditions.checkElementIndex(fieldIndexe, maxFieldIndex);
			}

			this.ds = ds;
			this.fieldIndexes = fieldIndexes;
		}
 

/**
 * Apply a function to the attribute of each edge in the graph.
 *
 * @param mapper the map function to apply.
 * @return a new graph
 */
@SuppressWarnings({ "unchecked", "rawtypes" })
public <NV> Graph<K, VV, NV> mapEdges(final MapFunction<Edge<K, EV>, NV> mapper) {

	TypeInformation<K> keyType = ((TupleTypeInfo<?>) edges.getType()).getTypeAt(0);

	TypeInformation<NV> valueType;

	if (mapper instanceof ResultTypeQueryable) {
		valueType = ((ResultTypeQueryable) mapper).getProducedType();
	} else {
		valueType = TypeExtractor.createTypeInfo(MapFunction.class, mapper.getClass(), 1, edges.getType(), null);
	}

	TypeInformation<Edge<K, NV>> returnType = (TypeInformation<Edge<K, NV>>) new TupleTypeInfo(
			Edge.class, keyType, keyType, valueType);

	return mapEdges(mapper, returnType);
}
 

/**
 * Tests compiler fail for join program with replicated data source behind rebalance.
 */
@Test(expected = CompilerException.class)
public void checkJoinWithReplicatedSourceInputBehindRebalance() {
	ExecutionEnvironment env = ExecutionEnvironment.createLocalEnvironment();
	env.setParallelism(DEFAULT_PARALLELISM);

	TupleTypeInfo<Tuple1<String>> typeInfo = TupleTypeInfo.getBasicTupleTypeInfo(String.class);
	ReplicatingInputFormat<Tuple1<String>, FileInputSplit> rif =
			new ReplicatingInputFormat<Tuple1<String>, FileInputSplit>(new TupleCsvInputFormat<Tuple1<String>>(new Path("/some/path"), typeInfo));

	DataSet<Tuple1<String>> source1 = env.createInput(rif, new TupleTypeInfo<Tuple1<String>>(BasicTypeInfo.STRING_TYPE_INFO));
	DataSet<Tuple1<String>> source2 = env.readCsvFile("/some/otherpath").types(String.class);

	DataSink<Tuple2<Tuple1<String>, Tuple1<String>>> out = source1
			.rebalance()
			.join(source2).where("*").equalTo("*")
			.writeAsText("/some/newpath");

	Plan plan = env.createProgramPlan();

	// submit the plan to the compiler
	OptimizedPlan oPlan = compileNoStats(plan);
}
 

/**
 * Tests compiler fail for join program with replicated data source behind rebalance.
 */
@Test(expected = CompilerException.class)
public void checkJoinWithReplicatedSourceInputBehindRebalance() {
	ExecutionEnvironment env = ExecutionEnvironment.createLocalEnvironment();
	env.setParallelism(DEFAULT_PARALLELISM);

	TupleTypeInfo<Tuple1<String>> typeInfo = TupleTypeInfo.getBasicTupleTypeInfo(String.class);
	ReplicatingInputFormat<Tuple1<String>, FileInputSplit> rif =
			new ReplicatingInputFormat<Tuple1<String>, FileInputSplit>(new TupleCsvInputFormat<Tuple1<String>>(new Path("/some/path"), typeInfo));

	DataSet<Tuple1<String>> source1 = env.createInput(rif, new TupleTypeInfo<Tuple1<String>>(BasicTypeInfo.STRING_TYPE_INFO));
	DataSet<Tuple1<String>> source2 = env.readCsvFile("/some/otherpath").types(String.class);

	DataSink<Tuple2<Tuple1<String>, Tuple1<String>>> out = source1
			.rebalance()
			.join(source2).where("*").equalTo("*")
			.writeAsText("/some/newpath");

	Plan plan = env.createProgramPlan();

	// submit the plan to the compiler
	OptimizedPlan oPlan = compileNoStats(plan);
}
 

@Before
public void beforeTest() {
	ExecutionConfig config = new ExecutionConfig();
	config.disableObjectReuse();
	
	TupleTypeInfo<Tuple2<String, String>> typeInfo1 = TupleTypeInfo.getBasicTupleTypeInfo(String.class, String.class);
	TupleTypeInfo<Tuple2<String, Integer>> typeInfo2 = TupleTypeInfo.getBasicTupleTypeInfo(String.class, Integer.class);
	serializer1 = typeInfo1.createSerializer(config);
	serializer2 = typeInfo2.createSerializer(config);
	comparator1 = typeInfo1.createComparator(new int[]{0}, new boolean[]{true}, 0, config);
	comparator2 = typeInfo2.createComparator(new int[]{0}, new boolean[]{true}, 0, config);
	pairComp = new GenericPairComparator<>(comparator1, comparator2);

	this.memoryManager = MemoryManagerBuilder.newBuilder().setMemorySize(MEMORY_SIZE).build();
	this.ioManager = new IOManagerAsync();
}
 

@Test
public void testAreCompatible9() throws Keys.IncompatibleKeysException {
	TypeInformation<Tuple3<String, Long, Integer>> t1 = new TupleTypeInfo<>(
		BasicTypeInfo.STRING_TYPE_INFO,
		BasicTypeInfo.LONG_TYPE_INFO,
		BasicTypeInfo.INT_TYPE_INFO
	);
	TypeInformation<PojoWithMultiplePojos> t2 = TypeExtractor.getForClass(PojoWithMultiplePojos.class);

	ExpressionKeys<Tuple3<String, Long, Integer>> ek1 = new ExpressionKeys<>(new int[]{2,0}, t1);
	Keys<PojoWithMultiplePojos> ek2 = new Keys.SelectorFunctionKeys<>(
		new KeySelector3(),
		t2,
		new TupleTypeInfo<Tuple2<Integer, String>>(BasicTypeInfo.INT_TYPE_INFO, BasicTypeInfo.STRING_TYPE_INFO)
	);

	Assert.assertTrue(ek1.areCompatible(ek2));
}
 

@Test
public void testAsFromAndToTuple() throws Exception {
	ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
	BatchTableEnvironment tableEnv = BatchTableEnvironment.create(env, config());

	Table table = tableEnv
		.fromDataSet(CollectionDataSets.get3TupleDataSet(env), "a, b, c")
		.select("a, b, c");

	TypeInformation<?> ti = new TupleTypeInfo<Tuple3<Integer, Long, String>>(
		BasicTypeInfo.INT_TYPE_INFO,
		BasicTypeInfo.LONG_TYPE_INFO,
		BasicTypeInfo.STRING_TYPE_INFO);

	DataSet<?> ds = tableEnv.toDataSet(table, ti);
	List<?> results = ds.collect();
	String expected = "(1,1,Hi)\n" + "(2,2,Hello)\n" + "(3,2,Hello world)\n" +
		"(4,3,Hello world, how are you?)\n" + "(5,3,I am fine.)\n" + "(6,3,Luke Skywalker)\n" +
		"(7,4,Comment#1)\n" + "(8,4,Comment#2)\n" + "(9,4,Comment#3)\n" + "(10,4,Comment#4)\n" +
		"(11,5,Comment#5)\n" + "(12,5,Comment#6)\n" + "(13,5,Comment#7)\n" +
		"(14,5,Comment#8)\n" + "(15,5,Comment#9)\n" + "(16,6,Comment#10)\n" +
		"(17,6,Comment#11)\n" + "(18,6,Comment#12)\n" + "(19,6,Comment#13)\n" +
		"(20,6,Comment#14)\n" + "(21,6,Comment#15)\n";
	compareResultAsText(results, expected);
}
 

public static void main(String[] args) throws Exception {
    final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
    DataSource<String> lines = env.fromElements(
        "Apache Flink is a community-driven open source framework for distributed big data analytics,",
        "like Hadoop and Spark. The core of Apache Flink is a distributed streaming dataflow engine written",
        " in Java and Scala.[1][2] It aims to bridge the gap between MapReduce-like systems and shared-nothing",
        "parallel database systems. Therefore, Flink executes arbitrary dataflow programs in a data-parallel and",
        "pipelined manner.[3] Flink's pipelined runtime system enables the execution of bulk/batch and stream",
        "processing programs.[4][5] Furthermore, Flink's runtime supports the execution of iterative algorithms natively.[6]"
    );

    lines.flatMap((line, out) -> {
        String[] words = line.split("\\W+");
        for (String word : words) {
            out.collect(new Tuple2<>(word, 1));
        }
    })
    .returns(new TupleTypeInfo(TypeInformation.of(String.class), TypeInformation.of(Integer.class)))
    .groupBy(0)
    .sum(1)
    .print();
}
 

@Test
public void testEitherWithTupleValues() {
	@SuppressWarnings("unchecked")
	Either<Tuple2<LongValue, LongValue>, DoubleValue>[] testData = new Either[] {
		Left(new Tuple2<>(new LongValue(2L), new LongValue(9L))),
		new Left<>(new Tuple2<>(new LongValue(Long.MIN_VALUE), new LongValue(Long.MAX_VALUE))),
		new Right<>(new DoubleValue(32.0)),
		Right(new DoubleValue(Double.MIN_VALUE)),
		Right(new DoubleValue(Double.MAX_VALUE))};

	EitherTypeInfo<Tuple2<LongValue, LongValue>, DoubleValue> eitherTypeInfo = new EitherTypeInfo<>(
		new TupleTypeInfo<Tuple2<LongValue, LongValue>>(ValueTypeInfo.LONG_VALUE_TYPE_INFO, ValueTypeInfo.LONG_VALUE_TYPE_INFO),
		ValueTypeInfo.DOUBLE_VALUE_TYPE_INFO);
	EitherSerializer<Tuple2<LongValue, LongValue>, DoubleValue> eitherSerializer =
		(EitherSerializer<Tuple2<LongValue, LongValue>, DoubleValue>) eitherTypeInfo.createSerializer(new ExecutionConfig());
	SerializerTestInstance<Either<Tuple2<LongValue, LongValue>, DoubleValue>> testInstance =
		new EitherSerializerTestInstance<>(eitherSerializer, eitherTypeInfo.getTypeClass(), -1, testData);
	testInstance.testAll();
}
 

@Before
public void beforeTest() {
	ExecutionConfig config = new ExecutionConfig();
	config.disableObjectReuse();
	
	TupleTypeInfo<Tuple2<String, String>> typeInfo1 = TupleTypeInfo.getBasicTupleTypeInfo(String.class, String.class);
	TupleTypeInfo<Tuple2<String, Integer>> typeInfo2 = TupleTypeInfo.getBasicTupleTypeInfo(String.class, Integer.class);
	serializer1 = typeInfo1.createSerializer(config);
	serializer2 = typeInfo2.createSerializer(config);
	comparator1 = typeInfo1.createComparator(new int[]{0}, new boolean[]{true}, 0, config);
	comparator2 = typeInfo2.createComparator(new int[]{0}, new boolean[]{true}, 0, config);
	pairComp = new GenericPairComparator<>(comparator1, comparator2);

	this.memoryManager = new MemoryManager(MEMORY_SIZE, 1);
	this.ioManager = new IOManagerAsync();
}
 

@SuppressWarnings("unchecked")
@Test
public void testEitherWithTuple() {

Either<Tuple2<Long, Long>, Double>[] testData = new Either[] {
		Either.Left(new Tuple2<>(2L, 9L)),
		new Left<>(new Tuple2<>(Long.MIN_VALUE, Long.MAX_VALUE)),
		new Right<>(32.0),
		Right(Double.MIN_VALUE),
		Right(Double.MAX_VALUE)};

EitherTypeInfo<Tuple2<Long, Long>, Double> eitherTypeInfo = (EitherTypeInfo<Tuple2<Long, Long>, Double>)
		new EitherTypeInfo<Tuple2<Long, Long>, Double>(
		new TupleTypeInfo<Tuple2<Long, Long>>(BasicTypeInfo.LONG_TYPE_INFO, BasicTypeInfo.LONG_TYPE_INFO),
		BasicTypeInfo.DOUBLE_TYPE_INFO);
EitherSerializer<Tuple2<Long, Long>, Double> eitherSerializer =
		(EitherSerializer<Tuple2<Long, Long>, Double>) eitherTypeInfo.createSerializer(new ExecutionConfig());
SerializerTestInstance<Either<Tuple2<Long, Long>, Double>> testInstance =
		new EitherSerializerTestInstance<Either<Tuple2<Long, Long>, Double>>(
				eitherSerializer, eitherTypeInfo.getTypeClass(), -1, testData);
testInstance.testAll();
}
 

@Test
public void testPOJOWithNestedArrayNoHashCodeKeyRejection() {
	StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment();

	DataStream<POJOWithHashCode> input = env.fromElements(
			new POJOWithHashCode(new int[] {1, 2}));

	TypeInformation<?> expectedTypeInfo = new TupleTypeInfo<Tuple1<int[]>>(
			PrimitiveArrayTypeInfo.INT_PRIMITIVE_ARRAY_TYPE_INFO);

	// adjust the rule
	expectedException.expect(InvalidProgramException.class);
	expectedException.expectMessage(new StringStartsWith("Type " + expectedTypeInfo + " cannot be used as key."));

	input.keyBy("id");
}
 

public Projection(DataSet<T> ds, int[] fieldIndexes) {

			if (!(ds.getType() instanceof TupleTypeInfo)) {
				throw new UnsupportedOperationException("project() can only be applied to DataSets of Tuples.");
			}

			if (fieldIndexes.length == 0) {
				throw new IllegalArgumentException("project() needs to select at least one (1) field.");
			} else if (fieldIndexes.length > Tuple.MAX_ARITY - 1) {
				throw new IllegalArgumentException(
					"project() may select only up to (" + (Tuple.MAX_ARITY - 1) + ") fields.");
			}

			int maxFieldIndex = ds.getType().getArity();
			for (int fieldIndexe : fieldIndexes) {
				Preconditions.checkElementIndex(fieldIndexe, maxFieldIndex);
			}

			this.ds = ds;
			this.fieldIndexes = fieldIndexes;
		}
 

@Before
public void beforeTest() {
	ExecutionConfig config = new ExecutionConfig();
	config.disableObjectReuse();
	
	TupleTypeInfo<Tuple2<String, String>> typeInfo1 = TupleTypeInfo.getBasicTupleTypeInfo(String.class, String.class);
	TupleTypeInfo<Tuple2<String, Integer>> typeInfo2 = TupleTypeInfo.getBasicTupleTypeInfo(String.class, Integer.class);
	serializer1 = typeInfo1.createSerializer(config);
	serializer2 = typeInfo2.createSerializer(config);
	comparator1 = typeInfo1.createComparator(new int[]{0}, new boolean[]{true}, 0, config);
	comparator2 = typeInfo2.createComparator(new int[]{0}, new boolean[]{true}, 0, config);
	pairComp = new GenericPairComparator<>(comparator1, comparator2);

	this.memoryManager = new MemoryManager(MEMORY_SIZE, 1);
	this.ioManager = new IOManagerAsync();
}
 

public static DataSet<Tuple3<Tuple2<IntValue, IntValue>, StringValue, IntValue>> getGroupSortedNestedTupleDataSet2(ExecutionEnvironment env) {
	List<Tuple3<Tuple2<IntValue, IntValue>, StringValue, IntValue>> data = new ArrayList<>();

	data.add(new Tuple3<>(new Tuple2<IntValue, IntValue>(new IntValue(1), new IntValue(3)), new StringValue("a"), new IntValue(2)));
	data.add(new Tuple3<>(new Tuple2<IntValue, IntValue>(new IntValue(1), new IntValue(2)), new StringValue("a"), new IntValue(1)));
	data.add(new Tuple3<>(new Tuple2<IntValue, IntValue>(new IntValue(2), new IntValue(1)), new StringValue("a"), new IntValue(3)));
	data.add(new Tuple3<>(new Tuple2<IntValue, IntValue>(new IntValue(2), new IntValue(2)), new StringValue("b"), new IntValue(4)));
	data.add(new Tuple3<>(new Tuple2<IntValue, IntValue>(new IntValue(3), new IntValue(3)), new StringValue("c"), new IntValue(5)));
	data.add(new Tuple3<>(new Tuple2<IntValue, IntValue>(new IntValue(3), new IntValue(6)), new StringValue("c"), new IntValue(6)));
	data.add(new Tuple3<>(new Tuple2<IntValue, IntValue>(new IntValue(4), new IntValue(9)), new StringValue("c"), new IntValue(7)));

	TupleTypeInfo<Tuple3<Tuple2<IntValue, IntValue>, StringValue, IntValue>> type = new
		TupleTypeInfo<>(
			new TupleTypeInfo<Tuple2<IntValue, IntValue>>(ValueTypeInfo.INT_VALUE_TYPE_INFO, ValueTypeInfo.INT_VALUE_TYPE_INFO),
			ValueTypeInfo.STRING_VALUE_TYPE_INFO,
			ValueTypeInfo.INT_VALUE_TYPE_INFO
	);

	return env.fromCollection(data, type);
}
 

RecursiveTupleFieldAccessor(int pos, FieldAccessor<R, F> innerAccessor, TypeInformation<T> typeInfo) {
	checkNotNull(typeInfo, "typeInfo must not be null.");
	checkNotNull(innerAccessor, "innerAccessor must not be null.");

	int arity = ((TupleTypeInfo) typeInfo).getArity();
	if (pos < 0 || pos >= arity) {
		throw new CompositeType.InvalidFieldReferenceException(
			"Tried to select " + ((Integer) pos).toString() + ". field on \"" +
				typeInfo.toString() + "\", which is an invalid index.");
	}

	this.pos = pos;
	this.innerAccessor = innerAccessor;
	this.fieldType = innerAccessor.fieldType;
}
 

protected ProjectCross(DataSet<I1> input1, DataSet<I2> input2, int[] fields, boolean[] isFromFirst,
		TupleTypeInfo<OUT> returnType, CrossProjection<I1, I2> crossProjection, CrossHint hint) {
	super(input1, input2,
		new ProjectCrossFunction<I1, I2, OUT>(fields, isFromFirst, returnType.createSerializer(input1.getExecutionEnvironment().getConfig()).createInstance()),
		returnType, hint, "unknown");

	this.crossProjection = crossProjection;
}
 

public static DataSet<Tuple5<Integer, Long, Integer, String, Long>> get5TupleDataSet(ExecutionEnvironment env) {

		List<Tuple5<Integer, Long, Integer, String, Long>> data = new ArrayList<>();
		data.add(new Tuple5<>(1, 1L, 0, "Hallo", 1L));
		data.add(new Tuple5<>(2, 2L, 1, "Hallo Welt", 2L));
		data.add(new Tuple5<>(2, 3L, 2, "Hallo Welt wie", 1L));
		data.add(new Tuple5<>(3, 4L, 3, "Hallo Welt wie gehts?", 2L));
		data.add(new Tuple5<>(3, 5L, 4, "ABC", 2L));
		data.add(new Tuple5<>(3, 6L, 5, "BCD", 3L));
		data.add(new Tuple5<>(4, 7L, 6, "CDE", 2L));
		data.add(new Tuple5<>(4, 8L, 7, "DEF", 1L));
		data.add(new Tuple5<>(4, 9L, 8, "EFG", 1L));
		data.add(new Tuple5<>(4, 10L, 9, "FGH", 2L));
		data.add(new Tuple5<>(5, 11L, 10, "GHI", 1L));
		data.add(new Tuple5<>(5, 12L, 11, "HIJ", 3L));
		data.add(new Tuple5<>(5, 13L, 12, "IJK", 3L));
		data.add(new Tuple5<>(5, 14L, 13, "JKL", 2L));
		data.add(new Tuple5<>(5, 15L, 14, "KLM", 2L));

		Collections.shuffle(data);

		TupleTypeInfo<Tuple5<Integer, Long, Integer, String, Long>> type = new TupleTypeInfo<>(
				BasicTypeInfo.INT_TYPE_INFO,
				BasicTypeInfo.LONG_TYPE_INFO,
				BasicTypeInfo.INT_TYPE_INFO,
				BasicTypeInfo.STRING_TYPE_INFO,
				BasicTypeInfo.LONG_TYPE_INFO
		);

		return env.fromCollection(data, type);
	}
 

@Override
public void open(Configuration parameters) {
	ValueStateDescriptor<List<Tuple2<Event, Integer>>> previousWindowDescriptor =
		new ValueStateDescriptor<>("eventsSeenSoFar",
			new ListTypeInfo<>(new TupleTypeInfo<>(TypeInformation.of(Event.class), BasicTypeInfo.INT_TYPE_INFO)));

	eventsSeenSoFar = getRuntimeContext().getState(previousWindowDescriptor);

	ValueStateDescriptor<Long> lastSequenceNumberDescriptor =
		new ValueStateDescriptor<>("lastSequenceNumber", BasicTypeInfo.LONG_TYPE_INFO);

	lastSequenceNumber = getRuntimeContext().getState(lastSequenceNumberDescriptor);
}
 

protected ProjectJoin(DataSet<I1> input1, DataSet<I2> input2, Keys<I1> keys1, Keys<I2> keys2, JoinHint hint, int[] fields, boolean[] isFromFirst, TupleTypeInfo<OUT> returnType, JoinProjection<I1, I2> joinProj) {
	super(input1, input2, keys1, keys2,
			new ProjectFlatJoinFunction<I1, I2, OUT>(fields, isFromFirst, returnType.createSerializer(input1.getExecutionEnvironment().getConfig()).createInstance()),
			returnType, hint, Utils.getCallLocationName(4));

	this.joinProj = joinProj;
}
 

/**
 * Translate {@link Vertex} values using the given {@link TranslateFunction}.
 *
 * @param vertices input vertices
 * @param translator implements conversion from {@code OLD} to {@code NEW}
 * @param parallelism operator parallelism
 * @param <K> vertex ID type
 * @param <OLD> old vertex value type
 * @param <NEW> new vertex value type
 * @return translated vertices
 */
@SuppressWarnings("unchecked")
public static <K, OLD, NEW> DataSet<Vertex<K, NEW>> translateVertexValues(DataSet<Vertex<K, OLD>> vertices, TranslateFunction<OLD, NEW> translator, int parallelism) {
	Preconditions.checkNotNull(vertices);
	Preconditions.checkNotNull(translator);

	Class<Vertex<K, NEW>> vertexClass = (Class<Vertex<K, NEW>>) (Class<? extends Vertex>) Vertex.class;
	TypeInformation<K> idType = ((TupleTypeInfo<Vertex<K, OLD>>) vertices.getType()).getTypeAt(0);
	TypeInformation<OLD> oldType = ((TupleTypeInfo<Vertex<K, OLD>>) vertices.getType()).getTypeAt(1);
	TypeInformation<NEW> newType = TypeExtractor.getUnaryOperatorReturnType(
		translator,
		TranslateFunction.class,
		0,
		1,
		new int[]{1},
		oldType,
		null,
		false);

	TupleTypeInfo<Vertex<K, NEW>> returnType = new TupleTypeInfo<>(vertexClass, idType, newType);

	return vertices
		.map(new TranslateVertexValue<>(translator))
		.returns(returnType)
			.setParallelism(parallelism)
			.name("Translate vertex values");
}
 

@Test
public void testAllReduceDriverImmutable() {
	try {
		TestTaskContext<GroupReduceFunction<Tuple2<String, Integer>, Tuple2<String, Integer>>, Tuple2<String, Integer>> context =
				new TestTaskContext<GroupReduceFunction<Tuple2<String, Integer>, Tuple2<String, Integer>>, Tuple2<String,Integer>>();
		
		List<Tuple2<String, Integer>> data = DriverTestData.createReduceImmutableData();
		TupleTypeInfo<Tuple2<String, Integer>> typeInfo = (TupleTypeInfo<Tuple2<String, Integer>>) TypeExtractor.getForObject(data.get(0));
		MutableObjectIterator<Tuple2<String, Integer>> input = new RegularToMutableObjectIterator<Tuple2<String, Integer>>(data.iterator(), typeInfo.createSerializer(new ExecutionConfig()));
		TypeComparator<Tuple2<String, Integer>> comparator = typeInfo.createComparator(new int[]{0}, new boolean[] {true}, 0, new ExecutionConfig());
		
		GatheringCollector<Tuple2<String, Integer>> result = new GatheringCollector<Tuple2<String,Integer>>(typeInfo.createSerializer(new ExecutionConfig()));
		
		context.setDriverStrategy(DriverStrategy.SORTED_GROUP_REDUCE);
		context.setInput1(input, typeInfo.createSerializer(new ExecutionConfig()));
		context.setCollector(result);
		context.setComparator1(comparator);
		context.setUdf(new ConcatSumReducer());
		
		GroupReduceDriver<Tuple2<String, Integer>, Tuple2<String, Integer>> driver = new GroupReduceDriver<Tuple2<String, Integer>, Tuple2<String, Integer>>();
		driver.setup(context);
		driver.prepare();
		driver.run();
		
		Object[] res = result.getList().toArray();
		Object[] expected = DriverTestData.createReduceImmutableDataGroupedResult().toArray();
		
		DriverTestData.compareTupleArrays(expected, res);
	}
	catch (Exception e) {
		System.err.println(e.getMessage());
		e.printStackTrace();
		Assert.fail(e.getMessage());
	}
}
 

public DefaultCross(DataSet<I1> input1, DataSet<I2> input2, CrossHint hint, String defaultName) {
	super(input1, input2, new DefaultCrossFunction<I1, I2>(),
		new TupleTypeInfo<Tuple2<I1, I2>>(
			Preconditions.checkNotNull(input1, "input1 is null").getType(),
			Preconditions.checkNotNull(input2, "input2 is null").getType()),
		hint, defaultName);
}
 

@Test
public void testAreCompatible2() throws Keys.IncompatibleKeysException {
	TypeInformation<Pojo1> t1 = TypeExtractor.getForClass(Pojo1.class);
	TypeInformation<Tuple2<String, Long>> t2 = new TupleTypeInfo<>(
		BasicTypeInfo.STRING_TYPE_INFO,
		BasicTypeInfo.LONG_TYPE_INFO
	);

	ExpressionKeys<Pojo1> ek1 = new ExpressionKeys<>("a", t1);
	ExpressionKeys<Tuple2<String, Long>> ek2 = new ExpressionKeys<>(0, t2);

	Assert.assertTrue(ek1.areCompatible(ek2));
	Assert.assertTrue(ek2.areCompatible(ek1));
}
 

@Override
public void open(Configuration parameters) {
	ValueStateDescriptor<List<Tuple2<Event, Integer>>> previousWindowDescriptor =
		new ValueStateDescriptor<>("eventsSeenSoFar",
			new ListTypeInfo<>(new TupleTypeInfo<>(TypeInformation.of(Event.class), BasicTypeInfo.INT_TYPE_INFO)));

	eventsSeenSoFar = getRuntimeContext().getState(previousWindowDescriptor);

	ValueStateDescriptor<Long> lastSequenceNumberDescriptor =
		new ValueStateDescriptor<>("lastSequenceNumber", BasicTypeInfo.LONG_TYPE_INFO);

	lastSequenceNumber = getRuntimeContext().getState(lastSequenceNumberDescriptor);
}
 

/**
 * Projects a {@link Tuple} {@link DataStream} to the previously selected fields.
 *
 * @return The projected DataStream.
 * @see Tuple
 * @see DataStream
 */
public <T0> SingleOutputStreamOperator<Tuple1<T0>> projectTuple1() {
	TypeInformation<?>[] fTypes = extractFieldTypes(fieldIndexes, dataStream.getType());
	TupleTypeInfo<Tuple1<T0>> tType = new TupleTypeInfo<Tuple1<T0>>(fTypes);

	return dataStream.transform("Projection", tType, new StreamProject<IN, Tuple1<T0>>(
			fieldIndexes, tType.createSerializer(dataStream.getExecutionConfig())));
}
 

/**
 * Tests cross program with replicated data source.
 */
@Test
public void checkCrossWithReplicatedSourceInput() {

	ExecutionEnvironment env = ExecutionEnvironment.createLocalEnvironment();
	env.setParallelism(DEFAULT_PARALLELISM);

	TupleTypeInfo<Tuple1<String>> typeInfo = TupleTypeInfo.getBasicTupleTypeInfo(String.class);
	ReplicatingInputFormat<Tuple1<String>, FileInputSplit> rif =
			new ReplicatingInputFormat<Tuple1<String>, FileInputSplit>(new TupleCsvInputFormat<Tuple1<String>>(new Path("/some/path"), typeInfo));

	DataSet<Tuple1<String>> source1 = env.createInput(rif, new TupleTypeInfo<Tuple1<String>>(BasicTypeInfo.STRING_TYPE_INFO));
	DataSet<Tuple1<String>> source2 = env.readCsvFile("/some/otherpath").types(String.class);

	DataSink<Tuple2<Tuple1<String>, Tuple1<String>>> out = source1
			.cross(source2)
			.writeAsText("/some/newpath");

	Plan plan = env.createProgramPlan();

	// submit the plan to the compiler
	OptimizedPlan oPlan = compileNoStats(plan);

	// check the optimized Plan
	// when cross should have forward strategy on both sides
	SinkPlanNode sinkNode = oPlan.getDataSinks().iterator().next();
	DualInputPlanNode crossNode = (DualInputPlanNode) sinkNode.getPredecessor();

	ShipStrategyType crossIn1 = crossNode.getInput1().getShipStrategy();
	ShipStrategyType crossIn2 = crossNode.getInput2().getShipStrategy();

	Assert.assertEquals("Invalid ship strategy for an operator.", ShipStrategyType.FORWARD, crossIn1);
	Assert.assertEquals("Invalid ship strategy for an operator.", ShipStrategyType.FORWARD, crossIn2);
}
 

@Test(expected = CompositeType.InvalidFieldReferenceException.class)
public void testIllegalTupleInPojoInTuple() {
	Tuple2<String, Foo> t = Tuple2.of("aa", new Foo(8, Tuple2.of("ddd", 9L), (short) 2));
	TupleTypeInfo<Tuple2<String, Foo>> tpeInfo =
		(TupleTypeInfo<Tuple2<String, Foo>>) TypeExtractor.getForObject(t);

	FieldAccessorFactory.getAccessor(tpeInfo, "illegal.illegal.illegal", null);
}
 

@Test
public void testReadSparseWithPositionSetter() throws IOException {
	try {
		final String fileContent = "111|222|333|444|555|666|777|888|999|000|\n000|999|888|777|666|555|444|333|222|111|";
		final FileInputSplit split = createTempFile(fileContent);

		final TupleTypeInfo<Tuple3<Integer, Integer, Integer>> typeInfo = TupleTypeInfo.getBasicTupleTypeInfo(Integer.class, Integer.class, Integer.class);
		final CsvInputFormat<Tuple3<Integer, Integer, Integer>> format = new TupleCsvInputFormat<Tuple3<Integer, Integer, Integer>>(PATH, typeInfo, new int[]{0, 3, 7});

		format.setFieldDelimiter("|");

		format.configure(new Configuration());
		format.open(split);

		Tuple3<Integer, Integer, Integer> result = new Tuple3<Integer, Integer, Integer>();

		result = format.nextRecord(result);
		assertNotNull(result);
		assertEquals(Integer.valueOf(111), result.f0);
		assertEquals(Integer.valueOf(444), result.f1);
		assertEquals(Integer.valueOf(888), result.f2);

		result = format.nextRecord(result);
		assertNotNull(result);
		assertEquals(Integer.valueOf(000), result.f0);
		assertEquals(Integer.valueOf(777), result.f1);
		assertEquals(Integer.valueOf(333), result.f2);

		result = format.nextRecord(result);
		assertNull(result);
		assertTrue(format.reachedEnd());
	}
	catch (Exception ex) {
		fail("Test failed due to a " + ex.getClass().getName() + ": " + ex.getMessage());
	}
}
 

@Test
public void testAreCompatible4() throws Keys.IncompatibleKeysException {
	TypeInformation<PojoWithMultiplePojos> t1 = TypeExtractor.getForClass(PojoWithMultiplePojos.class);
	TypeInformation<Tuple3<String, Long, Integer>> t2 = new TupleTypeInfo<>(
		BasicTypeInfo.STRING_TYPE_INFO,
		BasicTypeInfo.LONG_TYPE_INFO,
		BasicTypeInfo.INT_TYPE_INFO
	);

	ExpressionKeys<PojoWithMultiplePojos> ek1 = new ExpressionKeys<>(new String[]{"p1", "i0"}, t1);
	ExpressionKeys<Tuple3<String, Long, Integer>> ek2 = new ExpressionKeys<>(new int[]{0, 0, 2}, t2);

	Assert.assertTrue(ek1.areCompatible(ek2));
	Assert.assertTrue(ek2.areCompatible(ek1));
}