Package de.digitalcollections.workflow.engine.flow

Class FlowBuilder<M extends Message,R,W>

java.lang.Object

de.digitalcollections.workflow.engine.flow.FlowBuilder<M,R,W>

Type Parameters:

R - The data type produced by the reader. Input data type of the transformer.

W - The data type consumed by the writer. Output data type of the transformer.

public class FlowBuilder<M extends Message,R,W>
extends Object

Builder to create the Flow to process the data using an Engine.

Constructor Summary

Constructors

Constructor	Description
FlowBuilder()

Method Summary

Modifier and Type	Method	Description
Flow<M,R,W>	build()	Finally builds the flow.
FlowBuilder<M,R,W>	read(Function<M,R> reader)	Sets the reader for this flow.
FlowBuilder<M,R,W>	read(Supplier<Function<M,R>> readerFactory)	Sets a reader factory for this flow which creates a new reader for every processed message.
static <M extends Message,R,W> FlowBuilder<M,R,W>	receiving(Class<M> clazz)
FlowBuilder<M,R,W>	transform(Function<R,W> transformer)	Sets the transformer for this flow.
FlowBuilder<M,R,W>	transform(Supplier<Function<R,W>> transformerFactory)	Sets the transformer factory for this flow which creates a new transformer for every processed message.
FlowBuilder<M,R,W>	write(Consumer<W> consumingWriter)
FlowBuilder<M,R,W>	write(Supplier<Consumer<W>> consumingWriterFactory)
FlowBuilder<M,R,W>	writeAndSend(Function<W,Message> writer)	Sets output queue and writer for this flow.
FlowBuilder<M,R,W>	writeAndSend(Supplier<Function<W,Message>> writerFactory)	Sets writer factory for this flow which creates a new writer for every processed message.
FlowBuilder<M,R,W>	writeAndSendMany(Function<W,Collection<? extends Message>> writer)	Sets output queue and writer for this flow.
FlowBuilder<M,R,W>	writeAndSendMany(Supplier<Function<W,Collection<? extends Message>>> writerFactory)	Sets writer factory for this flow which creates a new writer for every processed message.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

FlowBuilder

public FlowBuilder()

Method Detail

read

public FlowBuilder<M,R,W> read(Function<M,R> reader)

Sets the reader for this flow. The same reader instance will be used for every message, so be careful to keep those thread save.

Parameters:

reader - The reader to process incoming messages.

Returns:

This FlowBuilder instance for further configuration or creation of the Flow.

read

public FlowBuilder<M,R,W> read(Supplier<Function<M,R>> readerFactory)

Sets a reader factory for this flow which creates a new reader for every processed message.

Parameters:

readerFactory - The reader factory to provide readers for incoming messages.

Returns:

This FlowBuilder instance for further configuration or creation of the Flow.

transform

public FlowBuilder<M,R,W> transform(Function<R,W> transformer)

Sets the transformer for this flow. The same transformer instance will be used for every message, so be careful to keep those thread save.

Parameters:

transformer - The transformer to process data produced by the reader, sending it further to the writer.

Returns:

This FlowBuilder instance for further configuration of the Flow.

transform

public FlowBuilder<M,R,W> transform(Supplier<Function<R,W>> transformerFactory)

Sets the transformer factory for this flow which creates a new transformer for every processed message.

Parameters:

transformerFactory - The transformer factory to provide transformers.

Returns:

This FlowBuilder instance for further configuration of the Flow.

writeAndSend

public FlowBuilder<M,R,W> writeAndSend(Function<W,Message> writer)

Sets output queue and writer for this flow.

Parameters:

writer - The writer to produce outgoing messages.

Returns:

This FlowBuilder instance for further configuration or creation of the Flow.

writeAndSend

public FlowBuilder<M,R,W> writeAndSend(Supplier<Function<W,Message>> writerFactory)

Sets writer factory for this flow which creates a new writer for every processed message.

Parameters:

writerFactory - The writer factory to provide a writer for every message.

Returns:

This FlowBuilder instance for further configuration or creation of the Flow.

writeAndSendMany

public FlowBuilder<M,R,W> writeAndSendMany(Function<W,Collection<? extends Message>> writer)

Sets output queue and writer for this flow.

Parameters:

writer - The writer to produce outgoing messages.

Returns:

This FlowBuilder instance for further configuration or creation of the Flow.

writeAndSendMany

public FlowBuilder<M,R,W> writeAndSendMany(Supplier<Function<W,Collection<? extends Message>>> writerFactory)

Sets writer factory for this flow which creates a new writer for every processed message.

Parameters:

writerFactory - The writer factory to provide a writer for every message.

Returns:

This FlowBuilder instance for further configuration or creation of the Flow.

write

public FlowBuilder<M,R,W> write(Supplier<Consumer<W>> consumingWriterFactory)

write

public FlowBuilder<M,R,W> write(Consumer<W> consumingWriter)

build

public Flow<M,R,W> build()

Finally builds the flow.

Returns:

A new Flow as configured before.

receiving

public static <M extends Message,R,W> FlowBuilder<M,R,W> receiving(Class<M> clazz)