Java Code Examples for org.apache.flink.api.common.io.InputFormat#close()

The following examples show how to use org.apache.flink.api.common.io.InputFormat#close() . 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: GenericDataSourceBase.java    From Flink-CEPplus with Apache License 2.0 5 votes vote down vote up 
protected List<OUT> executeOnCollections(RuntimeContext ctx, ExecutionConfig executionConfig) throws Exception {
	@SuppressWarnings("unchecked")
	InputFormat<OUT, InputSplit> inputFormat = (InputFormat<OUT, InputSplit>) this.formatWrapper.getUserCodeObject();
	//configure the input format
	inputFormat.configure(this.parameters);

	//open the input format
	if (inputFormat instanceof RichInputFormat) {
		((RichInputFormat) inputFormat).setRuntimeContext(ctx);
		((RichInputFormat) inputFormat).openInputFormat();
	}

	List<OUT> result = new ArrayList<OUT>();
	
	// splits
	InputSplit[] splits = inputFormat.createInputSplits(1);
	TypeSerializer<OUT> serializer = getOperatorInfo().getOutputType().createSerializer(executionConfig);
	
	for (InputSplit split : splits) {
		inputFormat.open(split);
		
		while (!inputFormat.reachedEnd()) {
			OUT next = inputFormat.nextRecord(serializer.createInstance());
			if (next != null) {
				result.add(serializer.copy(next));
			}
		}
		
		inputFormat.close();
	}
	
	//close the input format
	if (inputFormat instanceof RichInputFormat) {
		((RichInputFormat) inputFormat).closeInputFormat();
	}

	return result;
}
Example 2
Source File: GenericDataSourceBase.java    From flink with Apache License 2.0 5 votes vote down vote up 
protected List<OUT> executeOnCollections(RuntimeContext ctx, ExecutionConfig executionConfig) throws Exception {
	@SuppressWarnings("unchecked")
	InputFormat<OUT, InputSplit> inputFormat = (InputFormat<OUT, InputSplit>) this.formatWrapper.getUserCodeObject();
	//configure the input format
	inputFormat.configure(this.parameters);

	//open the input format
	if (inputFormat instanceof RichInputFormat) {
		((RichInputFormat) inputFormat).setRuntimeContext(ctx);
		((RichInputFormat) inputFormat).openInputFormat();
	}

	List<OUT> result = new ArrayList<OUT>();
	
	// splits
	InputSplit[] splits = inputFormat.createInputSplits(1);
	TypeSerializer<OUT> serializer = getOperatorInfo().getOutputType().createSerializer(executionConfig);
	
	for (InputSplit split : splits) {
		inputFormat.open(split);
		
		while (!inputFormat.reachedEnd()) {
			OUT next = inputFormat.nextRecord(serializer.createInstance());
			if (next != null) {
				result.add(serializer.copy(next));
			}
		}
		
		inputFormat.close();
	}
	
	//close the input format
	if (inputFormat instanceof RichInputFormat) {
		((RichInputFormat) inputFormat).closeInputFormat();
	}

	return result;
}
Example 3
Source File: GenericDataSourceBase.java    From flink with Apache License 2.0 5 votes vote down vote up 
protected List<OUT> executeOnCollections(RuntimeContext ctx, ExecutionConfig executionConfig) throws Exception {
	@SuppressWarnings("unchecked")
	InputFormat<OUT, InputSplit> inputFormat = (InputFormat<OUT, InputSplit>) this.formatWrapper.getUserCodeObject();
	//configure the input format
	inputFormat.configure(this.parameters);

	//open the input format
	if (inputFormat instanceof RichInputFormat) {
		((RichInputFormat) inputFormat).setRuntimeContext(ctx);
		((RichInputFormat) inputFormat).openInputFormat();
	}

	List<OUT> result = new ArrayList<OUT>();
	
	// splits
	InputSplit[] splits = inputFormat.createInputSplits(1);
	TypeSerializer<OUT> serializer = getOperatorInfo().getOutputType().createSerializer(executionConfig);
	
	for (InputSplit split : splits) {
		inputFormat.open(split);
		
		while (!inputFormat.reachedEnd()) {
			OUT next = inputFormat.nextRecord(serializer.createInstance());
			if (next != null) {
				result.add(serializer.copy(next));
			}
		}
		
		inputFormat.close();
	}
	
	//close the input format
	if (inputFormat instanceof RichInputFormat) {
		((RichInputFormat) inputFormat).closeInputFormat();
	}

	return result;
}
Example 4
Source File: CassandraConnectorITCase.java    From Flink-CEPplus with Apache License 2.0 4 votes vote down vote up 
@Test
public void testCassandraBatchPojoFormat() throws Exception {

	session.execute(CREATE_TABLE_QUERY.replace(TABLE_NAME_VARIABLE, CustomCassandraAnnotatedPojo.TABLE_NAME));

	OutputFormat<CustomCassandraAnnotatedPojo> sink = new CassandraPojoOutputFormat<>(builder, CustomCassandraAnnotatedPojo.class, () -> new Mapper.Option[]{Mapper.Option.saveNullFields(true)});

	List<CustomCassandraAnnotatedPojo> customCassandraAnnotatedPojos = IntStream.range(0, 20)
		.mapToObj(x -> new CustomCassandraAnnotatedPojo(UUID.randomUUID().toString(), x, 0))
		.collect(Collectors.toList());
	try {
		sink.configure(new Configuration());
		sink.open(0, 1);
		for (CustomCassandraAnnotatedPojo customCassandraAnnotatedPojo : customCassandraAnnotatedPojos) {
			sink.writeRecord(customCassandraAnnotatedPojo);
		}
	} finally {
		sink.close();
	}
	ResultSet rs = session.execute(SELECT_DATA_QUERY.replace(TABLE_NAME_VARIABLE, CustomCassandraAnnotatedPojo.TABLE_NAME));
	Assert.assertEquals(20, rs.all().size());

	InputFormat<CustomCassandraAnnotatedPojo, InputSplit> source = new CassandraPojoInputFormat<>(SELECT_DATA_QUERY.replace(TABLE_NAME_VARIABLE, "batches"), builder, CustomCassandraAnnotatedPojo.class);
	List<CustomCassandraAnnotatedPojo> result = new ArrayList<>();

	try {
		source.configure(new Configuration());
		source.open(null);
		while (!source.reachedEnd()) {
			CustomCassandraAnnotatedPojo temp = source.nextRecord(null);
			result.add(temp);
		}
	} finally {
		source.close();
	}

	Assert.assertEquals(20, result.size());
	result.sort(Comparator.comparingInt(CustomCassandraAnnotatedPojo::getCounter));
	customCassandraAnnotatedPojos.sort(Comparator.comparingInt(CustomCassandraAnnotatedPojo::getCounter));

	assertThat(result, samePropertyValuesAs(customCassandraAnnotatedPojos));
}
Example 5
Source File: CassandraConnectorITCase.java    From flink with Apache License 2.0 4 votes vote down vote up 
@Test
public void testCassandraBatchPojoFormat() throws Exception {

	session.execute(CREATE_TABLE_QUERY.replace(TABLE_NAME_VARIABLE, CustomCassandraAnnotatedPojo.TABLE_NAME));

	OutputFormat<CustomCassandraAnnotatedPojo> sink = new CassandraPojoOutputFormat<>(builder, CustomCassandraAnnotatedPojo.class, () -> new Mapper.Option[]{Mapper.Option.saveNullFields(true)});

	List<CustomCassandraAnnotatedPojo> customCassandraAnnotatedPojos = IntStream.range(0, 20)
		.mapToObj(x -> new CustomCassandraAnnotatedPojo(UUID.randomUUID().toString(), x, 0))
		.collect(Collectors.toList());
	try {
		sink.configure(new Configuration());
		sink.open(0, 1);
		for (CustomCassandraAnnotatedPojo customCassandraAnnotatedPojo : customCassandraAnnotatedPojos) {
			sink.writeRecord(customCassandraAnnotatedPojo);
		}
	} finally {
		sink.close();
	}
	ResultSet rs = session.execute(SELECT_DATA_QUERY.replace(TABLE_NAME_VARIABLE, CustomCassandraAnnotatedPojo.TABLE_NAME));
	Assert.assertEquals(20, rs.all().size());

	InputFormat<CustomCassandraAnnotatedPojo, InputSplit> source = new CassandraPojoInputFormat<>(SELECT_DATA_QUERY.replace(TABLE_NAME_VARIABLE, "batches"), builder, CustomCassandraAnnotatedPojo.class);
	List<CustomCassandraAnnotatedPojo> result = new ArrayList<>();

	try {
		source.configure(new Configuration());
		source.open(null);
		while (!source.reachedEnd()) {
			CustomCassandraAnnotatedPojo temp = source.nextRecord(null);
			result.add(temp);
		}
	} finally {
		source.close();
	}

	Assert.assertEquals(20, result.size());
	result.sort(Comparator.comparingInt(CustomCassandraAnnotatedPojo::getCounter));
	customCassandraAnnotatedPojos.sort(Comparator.comparingInt(CustomCassandraAnnotatedPojo::getCounter));

	assertThat(result, samePropertyValuesAs(customCassandraAnnotatedPojos));
}
Example 6
Source File: CassandraConnectorITCase.java    From flink with Apache License 2.0 4 votes vote down vote up 
@Test
public void testCassandraBatchPojoFormat() throws Exception {

	session.execute(CREATE_TABLE_QUERY.replace(TABLE_NAME_VARIABLE, CustomCassandraAnnotatedPojo.TABLE_NAME));

	OutputFormat<CustomCassandraAnnotatedPojo> sink = new CassandraPojoOutputFormat<>(builder, CustomCassandraAnnotatedPojo.class, () -> new Mapper.Option[]{Mapper.Option.saveNullFields(true)});

	List<CustomCassandraAnnotatedPojo> customCassandraAnnotatedPojos = IntStream.range(0, 20)
		.mapToObj(x -> new CustomCassandraAnnotatedPojo(UUID.randomUUID().toString(), x, 0))
		.collect(Collectors.toList());
	try {
		sink.configure(new Configuration());
		sink.open(0, 1);
		for (CustomCassandraAnnotatedPojo customCassandraAnnotatedPojo : customCassandraAnnotatedPojos) {
			sink.writeRecord(customCassandraAnnotatedPojo);
		}
	} finally {
		sink.close();
	}
	ResultSet rs = session.execute(SELECT_DATA_QUERY.replace(TABLE_NAME_VARIABLE, CustomCassandraAnnotatedPojo.TABLE_NAME));
	Assert.assertEquals(20, rs.all().size());

	InputFormat<CustomCassandraAnnotatedPojo, InputSplit> source = new CassandraPojoInputFormat<>(SELECT_DATA_QUERY.replace(TABLE_NAME_VARIABLE, "batches"), builder, CustomCassandraAnnotatedPojo.class);
	List<CustomCassandraAnnotatedPojo> result = new ArrayList<>();

	try {
		source.configure(new Configuration());
		source.open(null);
		while (!source.reachedEnd()) {
			CustomCassandraAnnotatedPojo temp = source.nextRecord(null);
			result.add(temp);
		}
	} finally {
		source.close();
	}

	Assert.assertEquals(20, result.size());
	result.sort(Comparator.comparingInt(CustomCassandraAnnotatedPojo::getCounter));
	customCassandraAnnotatedPojos.sort(Comparator.comparingInt(CustomCassandraAnnotatedPojo::getCounter));

	assertThat(result, samePropertyValuesAs(customCassandraAnnotatedPojos));
}