Java Code Examples for org.apache.flink.api.common.operators.SingleInputSemanticProperties#getForwardingTargetFields()

The following examples show how to use org.apache.flink.api.common.operators.SingleInputSemanticProperties#getForwardingTargetFields() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: SemanticPropertiesTranslationTest.java    From Flink-CEPplus with Apache License 2.0 6 votes vote down vote up 
@Test
public void testUnaryFunctionWildcardForwardedAnnotation() {
	ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();

	@SuppressWarnings("unchecked")
	DataSet<Tuple3<Long, String, Integer>> input = env.fromElements(new Tuple3<Long, String, Integer>(3L, "test", 42));
	input.map(new WildcardForwardedMapper<Tuple3<Long, String, Integer>>()).output(new DiscardingOutputFormat<Tuple3<Long, String, Integer>>());
	Plan plan = env.createProgramPlan();

	GenericDataSinkBase<?> sink = plan.getDataSinks().iterator().next();
	MapOperatorBase<?, ?, ?> mapper = (MapOperatorBase<?, ?, ?>) sink.getInput();

	SingleInputSemanticProperties semantics = mapper.getSemanticProperties();

	FieldSet fw1 = semantics.getForwardingTargetFields(0, 0);
	FieldSet fw2 = semantics.getForwardingTargetFields(0, 1);
	FieldSet fw3 = semantics.getForwardingTargetFields(0, 2);
	assertNotNull(fw1);
	assertNotNull(fw2);
	assertNotNull(fw3);
	assertTrue(fw1.contains(0));
	assertTrue(fw2.contains(1));
	assertTrue(fw3.contains(2));
}
Example 2
Source File: SemanticPropertiesTranslationTest.java    From flink with Apache License 2.0 6 votes vote down vote up 
@Test
public void testUnaryFunctionForwardedInLine2() {
	ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();

	@SuppressWarnings("unchecked")
	DataSet<Tuple3<Long, Long, Long>> input = env.fromElements(new Tuple3<Long, Long, Long>(3L, 2L, 1L));
	input.map(new ReadSetMapper<Tuple3<Long, Long, Long>>()).withForwardedFields("0->1; 2")
			.output(new DiscardingOutputFormat<Tuple3<Long, Long, Long>>());
	Plan plan = env.createProgramPlan();

	GenericDataSinkBase<?> sink = plan.getDataSinks().iterator().next();
	MapOperatorBase<?, ?, ?> mapper = (MapOperatorBase<?, ?, ?>) sink.getInput();

	SingleInputSemanticProperties semantics = mapper.getSemanticProperties();

	FieldSet fw1 = semantics.getForwardingTargetFields(0, 0);
	FieldSet fw2 = semantics.getForwardingTargetFields(0, 2);
	assertNotNull(fw1);
	assertNotNull(fw2);
	assertTrue(fw1.contains(1));
	assertTrue(fw2.contains(2));
}
Example 3
Source File: SemanticPropertiesTranslationTest.java    From flink with Apache License 2.0 6 votes vote down vote up 
@Test
public void testUnaryFunctionWildcardForwardedAnnotation() {
	ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();

	@SuppressWarnings("unchecked")
	DataSet<Tuple3<Long, String, Integer>> input = env.fromElements(new Tuple3<Long, String, Integer>(3L, "test", 42));
	input.map(new WildcardForwardedMapper<Tuple3<Long, String, Integer>>()).output(new DiscardingOutputFormat<Tuple3<Long, String, Integer>>());
	Plan plan = env.createProgramPlan();

	GenericDataSinkBase<?> sink = plan.getDataSinks().iterator().next();
	MapOperatorBase<?, ?, ?> mapper = (MapOperatorBase<?, ?, ?>) sink.getInput();

	SingleInputSemanticProperties semantics = mapper.getSemanticProperties();

	FieldSet fw1 = semantics.getForwardingTargetFields(0, 0);
	FieldSet fw2 = semantics.getForwardingTargetFields(0, 1);
	FieldSet fw3 = semantics.getForwardingTargetFields(0, 2);
	assertNotNull(fw1);
	assertNotNull(fw2);
	assertNotNull(fw3);
	assertTrue(fw1.contains(0));
	assertTrue(fw2.contains(1));
	assertTrue(fw3.contains(2));
}
Example 4
Source File: SemanticPropertiesTranslationTest.java    From flink with Apache License 2.0 6 votes vote down vote up 
@Test
public void testUnaryFunctionMovingForwardedAnnotation() {
	ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();

	@SuppressWarnings("unchecked")
	DataSet<Tuple3<Long, Long, Long>> input = env.fromElements(new Tuple3<Long, Long, Long>(3L, 2L, 1L));
	input.map(new ShufflingMapper<Long>()).output(new DiscardingOutputFormat<Tuple3<Long, Long, Long>>());
	Plan plan = env.createProgramPlan();

	GenericDataSinkBase<?> sink = plan.getDataSinks().iterator().next();
	MapOperatorBase<?, ?, ?> mapper = (MapOperatorBase<?, ?, ?>) sink.getInput();

	SingleInputSemanticProperties semantics = mapper.getSemanticProperties();

	FieldSet fw1 = semantics.getForwardingTargetFields(0, 0);
	FieldSet fw2 = semantics.getForwardingTargetFields(0, 1);
	FieldSet fw3 = semantics.getForwardingTargetFields(0, 2);
	assertNotNull(fw1);
	assertNotNull(fw2);
	assertNotNull(fw3);
	assertTrue(fw1.contains(2));
	assertTrue(fw2.contains(0));
	assertTrue(fw3.contains(1));
}
Example 5
Source File: SemanticPropertiesTranslationTest.java    From flink with Apache License 2.0 6 votes vote down vote up 
@Test
public void testUnaryFunctionInPlaceForwardedAnnotation() {
	ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();

	@SuppressWarnings("unchecked")
	DataSet<Tuple3<Long, String, Integer>> input = env.fromElements(new Tuple3<Long, String, Integer>(3L, "test", 42));
	input.map(new IndividualForwardedMapper<Long, String, Integer>()).output(new DiscardingOutputFormat<Tuple3<Long, String, Integer>>());
	Plan plan = env.createProgramPlan();

	GenericDataSinkBase<?> sink = plan.getDataSinks().iterator().next();
	MapOperatorBase<?, ?, ?> mapper = (MapOperatorBase<?, ?, ?>) sink.getInput();

	SingleInputSemanticProperties semantics = mapper.getSemanticProperties();

	FieldSet fw1 = semantics.getForwardingTargetFields(0, 0);
	FieldSet fw2 = semantics.getForwardingTargetFields(0, 2);
	assertNotNull(fw1);
	assertNotNull(fw2);
	assertTrue(fw1.contains(0));
	assertTrue(fw2.contains(2));
}
Example 6
Source File: SemanticPropertiesTranslationTest.java    From flink with Apache License 2.0 6 votes vote down vote up 
@Test
public void testUnaryFunctionWildcardForwardedAnnotation() {
	ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();

	@SuppressWarnings("unchecked")
	DataSet<Tuple3<Long, String, Integer>> input = env.fromElements(new Tuple3<Long, String, Integer>(3L, "test", 42));
	input.map(new WildcardForwardedMapper<Tuple3<Long, String, Integer>>()).output(new DiscardingOutputFormat<Tuple3<Long, String, Integer>>());
	Plan plan = env.createProgramPlan();

	GenericDataSinkBase<?> sink = plan.getDataSinks().iterator().next();
	MapOperatorBase<?, ?, ?> mapper = (MapOperatorBase<?, ?, ?>) sink.getInput();

	SingleInputSemanticProperties semantics = mapper.getSemanticProperties();

	FieldSet fw1 = semantics.getForwardingTargetFields(0, 0);
	FieldSet fw2 = semantics.getForwardingTargetFields(0, 1);
	FieldSet fw3 = semantics.getForwardingTargetFields(0, 2);
	assertNotNull(fw1);
	assertNotNull(fw2);
	assertNotNull(fw3);
	assertTrue(fw1.contains(0));
	assertTrue(fw2.contains(1));
	assertTrue(fw3.contains(2));
}
Example 7
Source File: SemanticPropUtil.java    From flink with Apache License 2.0 6 votes vote down vote up 
/**
 * Creates SemanticProperties by adding an offset to each input field index of the given SemanticProperties.
 *
 * @param props The SemanticProperties to which the offset is added.
 * @param numInputFields The original number of fields of the input.
 * @param offset The offset that is added to each input field index.
 * @return New SemanticProperties with added offset.
 */
public static SingleInputSemanticProperties addSourceFieldOffset(SingleInputSemanticProperties props,
																	int numInputFields, int offset) {

	SingleInputSemanticProperties offsetProps = new SingleInputSemanticProperties();
	if (props.getReadFields(0) != null) {
		FieldSet offsetReadFields = new FieldSet();
		for (int r : props.getReadFields(0)) {
			offsetReadFields = offsetReadFields.addField(r + offset);
		}
		offsetProps.addReadFields(offsetReadFields);
	}
	for (int s = 0; s < numInputFields; s++) {
		FieldSet targetFields = props.getForwardingTargetFields(0, s);
		for (int t : targetFields) {
			offsetProps.addForwardedField(s + offset, t);
		}
	}
	return offsetProps;
}
Example 8
Source File: SemanticPropUtil.java    From flink with Apache License 2.0 6 votes vote down vote up 
/**
 * Creates SemanticProperties by adding an offset to each input field index of the given SemanticProperties.
 *
 * @param props The SemanticProperties to which the offset is added.
 * @param numInputFields The original number of fields of the input.
 * @param offset The offset that is added to each input field index.
 * @return New SemanticProperties with added offset.
 */
public static SingleInputSemanticProperties addSourceFieldOffset(SingleInputSemanticProperties props,
																	int numInputFields, int offset) {

	SingleInputSemanticProperties offsetProps = new SingleInputSemanticProperties();
	if (props.getReadFields(0) != null) {
		FieldSet offsetReadFields = new FieldSet();
		for (int r : props.getReadFields(0)) {
			offsetReadFields = offsetReadFields.addField(r + offset);
		}
		offsetProps.addReadFields(offsetReadFields);
	}
	for (int s = 0; s < numInputFields; s++) {
		FieldSet targetFields = props.getForwardingTargetFields(0, s);
		for (int t : targetFields) {
			offsetProps.addForwardedField(s + offset, t);
		}
	}
	return offsetProps;
}
Example 9
Source File: SemanticPropertiesTranslationTest.java    From flink with Apache License 2.0 6 votes vote down vote up 
@Test
public void testUnaryFunctionMovingForwardedAnnotation() {
	ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();

	@SuppressWarnings("unchecked")
	DataSet<Tuple3<Long, Long, Long>> input = env.fromElements(new Tuple3<Long, Long, Long>(3L, 2L, 1L));
	input.map(new ShufflingMapper<Long>()).output(new DiscardingOutputFormat<Tuple3<Long, Long, Long>>());
	Plan plan = env.createProgramPlan();

	GenericDataSinkBase<?> sink = plan.getDataSinks().iterator().next();
	MapOperatorBase<?, ?, ?> mapper = (MapOperatorBase<?, ?, ?>) sink.getInput();

	SingleInputSemanticProperties semantics = mapper.getSemanticProperties();

	FieldSet fw1 = semantics.getForwardingTargetFields(0, 0);
	FieldSet fw2 = semantics.getForwardingTargetFields(0, 1);
	FieldSet fw3 = semantics.getForwardingTargetFields(0, 2);
	assertNotNull(fw1);
	assertNotNull(fw2);
	assertNotNull(fw3);
	assertTrue(fw1.contains(2));
	assertTrue(fw2.contains(0));
	assertTrue(fw3.contains(1));
}
Example 10
Source File: SemanticPropertiesTranslationTest.java    From flink with Apache License 2.0 6 votes vote down vote up 
@Test
public void testUnaryFunctionForwardedInLine3() {
	ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();

	@SuppressWarnings("unchecked")
	DataSet<Tuple3<Long, Long, Long>> input = env.fromElements(new Tuple3<Long, Long, Long>(3L, 2L, 1L));
	input.map(new ReadSetMapper<Tuple3<Long, Long, Long>>()).withForwardedFields("0->1; 2")
			.output(new DiscardingOutputFormat<Tuple3<Long, Long, Long>>());
	Plan plan = env.createProgramPlan();

	GenericDataSinkBase<?> sink = plan.getDataSinks().iterator().next();
	MapOperatorBase<?, ?, ?> mapper = (MapOperatorBase<?, ?, ?>) sink.getInput();

	SingleInputSemanticProperties semantics = mapper.getSemanticProperties();

	FieldSet fw1 = semantics.getForwardingTargetFields(0, 0);
	FieldSet fw2 = semantics.getForwardingTargetFields(0, 2);
	assertNotNull(fw1);
	assertNotNull(fw2);
	assertTrue(fw1.contains(1));
	assertTrue(fw2.contains(2));
}
Example 11
Source File: SemanticPropertiesTranslationTest.java    From Flink-CEPplus with Apache License 2.0 6 votes vote down vote up 
@Test
public void testUnaryFunctionAllForwardedExceptAnnotation() {
	ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();

	@SuppressWarnings("unchecked")
	DataSet<Tuple3<Long, Long, Long>> input = env.fromElements(new Tuple3<Long, Long, Long>(3L, 2L, 1L));
	input.map(new AllForwardedExceptMapper<Tuple3<Long, Long, Long>>()).output(new DiscardingOutputFormat<Tuple3<Long, Long, Long>>());
	Plan plan = env.createProgramPlan();

	GenericDataSinkBase<?> sink = plan.getDataSinks().iterator().next();
	MapOperatorBase<?, ?, ?> mapper = (MapOperatorBase<?, ?, ?>) sink.getInput();

	SingleInputSemanticProperties semantics = mapper.getSemanticProperties();

	FieldSet fw1 = semantics.getForwardingTargetFields(0, 0);
	FieldSet fw2 = semantics.getForwardingTargetFields(0, 2);
	assertNotNull(fw1);
	assertNotNull(fw2);
	assertTrue(fw1.contains(0));
	assertTrue(fw2.contains(2));
}
Example 12
Source File: SemanticPropertiesTranslationTest.java    From flink with Apache License 2.0 6 votes vote down vote up 
@Test
public void testUnaryFunctionInPlaceForwardedAnnotation() {
	ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();

	@SuppressWarnings("unchecked")
	DataSet<Tuple3<Long, String, Integer>> input = env.fromElements(new Tuple3<Long, String, Integer>(3L, "test", 42));
	input.map(new IndividualForwardedMapper<Long, String, Integer>()).output(new DiscardingOutputFormat<Tuple3<Long, String, Integer>>());
	Plan plan = env.createProgramPlan();

	GenericDataSinkBase<?> sink = plan.getDataSinks().iterator().next();
	MapOperatorBase<?, ?, ?> mapper = (MapOperatorBase<?, ?, ?>) sink.getInput();

	SingleInputSemanticProperties semantics = mapper.getSemanticProperties();

	FieldSet fw1 = semantics.getForwardingTargetFields(0, 0);
	FieldSet fw2 = semantics.getForwardingTargetFields(0, 2);
	assertNotNull(fw1);
	assertNotNull(fw2);
	assertTrue(fw1.contains(0));
	assertTrue(fw2.contains(2));
}
Example 13
Source File: SemanticPropertiesTranslationTest.java    From Flink-CEPplus with Apache License 2.0 6 votes vote down vote up 
@Test
public void testUnaryFunctionForwardedInLine2() {
	ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();

	@SuppressWarnings("unchecked")
	DataSet<Tuple3<Long, Long, Long>> input = env.fromElements(new Tuple3<Long, Long, Long>(3L, 2L, 1L));
	input.map(new ReadSetMapper<Tuple3<Long, Long, Long>>()).withForwardedFields("0->1; 2")
			.output(new DiscardingOutputFormat<Tuple3<Long, Long, Long>>());
	Plan plan = env.createProgramPlan();

	GenericDataSinkBase<?> sink = plan.getDataSinks().iterator().next();
	MapOperatorBase<?, ?, ?> mapper = (MapOperatorBase<?, ?, ?>) sink.getInput();

	SingleInputSemanticProperties semantics = mapper.getSemanticProperties();

	FieldSet fw1 = semantics.getForwardingTargetFields(0, 0);
	FieldSet fw2 = semantics.getForwardingTargetFields(0, 2);
	assertNotNull(fw1);
	assertNotNull(fw2);
	assertTrue(fw1.contains(1));
	assertTrue(fw2.contains(2));
}
Example 14
Source File: SemanticPropertiesTranslationTest.java    From Flink-CEPplus with Apache License 2.0 6 votes vote down vote up 
@Test
public void testUnaryFunctionForwardedInLine1() {
	ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();

	@SuppressWarnings("unchecked")
	DataSet<Tuple3<Long, Long, Long>> input = env.fromElements(new Tuple3<Long, Long, Long>(3L, 2L, 1L));
	input.map(new NoAnnotationMapper<Tuple3<Long, Long, Long>>()).withForwardedFields("0->1; 2")
			.output(new DiscardingOutputFormat<Tuple3<Long, Long, Long>>());
	Plan plan = env.createProgramPlan();

	GenericDataSinkBase<?> sink = plan.getDataSinks().iterator().next();
	MapOperatorBase<?, ?, ?> mapper = (MapOperatorBase<?, ?, ?>) sink.getInput();

	SingleInputSemanticProperties semantics = mapper.getSemanticProperties();

	FieldSet fw1 = semantics.getForwardingTargetFields(0, 0);
	FieldSet fw2 = semantics.getForwardingTargetFields(0, 2);
	assertNotNull(fw1);
	assertNotNull(fw2);
	assertTrue(fw1.contains(1));
	assertTrue(fw2.contains(2));
}
Example 15
Source File: GroupCombineNode.java    From flink with Apache License 2.0 6 votes vote down vote up 
@Override
protected SemanticProperties getSemanticPropertiesForLocalPropertyFiltering() {

	// Local properties for GroupCombine may only be preserved on key fields.
	SingleInputSemanticProperties origProps =
			((SingleInputOperator<?,?,?>) getOperator()).getSemanticProperties();
	SingleInputSemanticProperties filteredProps = new SingleInputSemanticProperties();
	FieldSet readSet = origProps.getReadFields(0);
	if(readSet != null) {
		filteredProps.addReadFields(readSet);
	}

	// only add forward field information for key fields
	if(this.keys != null) {
		for (int f : this.keys) {
			FieldSet targets = origProps.getForwardingTargetFields(0, f);
			for (int t : targets) {
				filteredProps.addForwardedField(f, t);
			}
		}
	}
	return filteredProps;
}
Example 16
Source File: GroupCombineNode.java    From flink with Apache License 2.0 6 votes vote down vote up 
@Override
protected SemanticProperties getSemanticPropertiesForLocalPropertyFiltering() {

	// Local properties for GroupCombine may only be preserved on key fields.
	SingleInputSemanticProperties origProps =
			((SingleInputOperator<?,?,?>) getOperator()).getSemanticProperties();
	SingleInputSemanticProperties filteredProps = new SingleInputSemanticProperties();
	FieldSet readSet = origProps.getReadFields(0);
	if(readSet != null) {
		filteredProps.addReadFields(readSet);
	}

	// only add forward field information for key fields
	if(this.keys != null) {
		for (int f : this.keys) {
			FieldSet targets = origProps.getForwardingTargetFields(0, f);
			for (int t : targets) {
				filteredProps.addForwardedField(f, t);
			}
		}
	}
	return filteredProps;
}
Example 17
Source File: SemanticPropertiesTranslationTest.java    From flink with Apache License 2.0 6 votes vote down vote up 
@Test
public void testUnaryFunctionAllForwardedExceptAnnotation() {
	ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();

	@SuppressWarnings("unchecked")
	DataSet<Tuple3<Long, Long, Long>> input = env.fromElements(new Tuple3<Long, Long, Long>(3L, 2L, 1L));
	input.map(new AllForwardedExceptMapper<Tuple3<Long, Long, Long>>()).output(new DiscardingOutputFormat<Tuple3<Long, Long, Long>>());
	Plan plan = env.createProgramPlan();

	GenericDataSinkBase<?> sink = plan.getDataSinks().iterator().next();
	MapOperatorBase<?, ?, ?> mapper = (MapOperatorBase<?, ?, ?>) sink.getInput();

	SingleInputSemanticProperties semantics = mapper.getSemanticProperties();

	FieldSet fw1 = semantics.getForwardingTargetFields(0, 0);
	FieldSet fw2 = semantics.getForwardingTargetFields(0, 2);
	assertNotNull(fw1);
	assertNotNull(fw2);
	assertTrue(fw1.contains(0));
	assertTrue(fw2.contains(2));
}
Example 18
Source File: SemanticPropertiesPrecedenceTest.java    From Flink-CEPplus with Apache License 2.0 5 votes vote down vote up 
@Test
public void testFunctionApiPrecedence() {
	ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
	env.getConfig().setCodeAnalysisMode(CodeAnalysisMode.OPTIMIZE);

	@SuppressWarnings("unchecked")
	DataSet<Tuple3<Long, String, Integer>> input = env.fromElements(Tuple3.of(3L, "test", 42));
	input
			.map(new WildcardForwardedMapper<Tuple3<Long, String, Integer>>())
			.withForwardedFields("f0")
			.output(new DiscardingOutputFormat<Tuple3<Long, String, Integer>>());
	Plan plan = env.createProgramPlan();

	GenericDataSinkBase<?> sink = plan.getDataSinks().iterator().next();
	MapOperatorBase<?, ?, ?> mapper = (MapOperatorBase<?, ?, ?>) sink.getInput();

	SingleInputSemanticProperties semantics = mapper.getSemanticProperties();

	FieldSet fw1 = semantics.getForwardingTargetFields(0, 0);
	FieldSet fw2 = semantics.getForwardingTargetFields(0, 1);
	FieldSet fw3 = semantics.getForwardingTargetFields(0, 2);
	assertNotNull(fw1);
	assertNotNull(fw2);
	assertNotNull(fw3);
	assertTrue(fw1.contains(0));
	assertFalse(fw2.contains(1));
	assertFalse(fw3.contains(2));
}
Example 19
Source File: SemanticPropertiesPrecedenceTest.java    From Flink-CEPplus with Apache License 2.0 5 votes vote down vote up 
@Test
public void testFunctionAnalyzerPrecedence() {
	ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
	env.getConfig().setCodeAnalysisMode(CodeAnalysisMode.OPTIMIZE);

	@SuppressWarnings("unchecked")
	DataSet<Tuple3<Long, String, Integer>> input = env.fromElements(Tuple3.of(3L, "test", 42));
	input
			.map(new WildcardForwardedMapper<Tuple3<Long, String, Integer>>())
			.output(new DiscardingOutputFormat<Tuple3<Long, String, Integer>>());
	Plan plan = env.createProgramPlan();

	GenericDataSinkBase<?> sink = plan.getDataSinks().iterator().next();
	MapOperatorBase<?, ?, ?> mapper = (MapOperatorBase<?, ?, ?>) sink.getInput();

	SingleInputSemanticProperties semantics = mapper.getSemanticProperties();

	FieldSet fw1 = semantics.getForwardingTargetFields(0, 0);
	FieldSet fw2 = semantics.getForwardingTargetFields(0, 1);
	FieldSet fw3 = semantics.getForwardingTargetFields(0, 2);
	assertNotNull(fw1);
	assertNotNull(fw2);
	assertNotNull(fw3);
	assertTrue(fw1.contains(0));
	assertTrue(fw2.contains(1));
	assertTrue(fw3.contains(2));
}
Example 20
Source File: SemanticPropertiesPrecedenceTest.java    From flink with Apache License 2.0 5 votes vote down vote up 
@Test
public void testFunctionApiPrecedence() {
	ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();

	@SuppressWarnings("unchecked")
	DataSet<Tuple3<Long, String, Integer>> input = env.fromElements(Tuple3.of(3L, "test", 42));
	input
			.map(new WildcardForwardedMapper<Tuple3<Long, String, Integer>>())
			.withForwardedFields("f0")
			.output(new DiscardingOutputFormat<Tuple3<Long, String, Integer>>());
	Plan plan = env.createProgramPlan();

	GenericDataSinkBase<?> sink = plan.getDataSinks().iterator().next();
	MapOperatorBase<?, ?, ?> mapper = (MapOperatorBase<?, ?, ?>) sink.getInput();

	SingleInputSemanticProperties semantics = mapper.getSemanticProperties();

	FieldSet fw1 = semantics.getForwardingTargetFields(0, 0);
	FieldSet fw2 = semantics.getForwardingTargetFields(0, 1);
	FieldSet fw3 = semantics.getForwardingTargetFields(0, 2);
	assertNotNull(fw1);
	assertNotNull(fw2);
	assertNotNull(fw3);
	assertTrue(fw1.contains(0));
	assertFalse(fw2.contains(1));
	assertFalse(fw3.contains(2));
}