com.northconcepts.datapipeline.multiplex

Class SplitWriter

java.lang.Object

com.northconcepts.datapipeline.core.DataObject

com.northconcepts.datapipeline.core.Endpoint

com.northconcepts.datapipeline.core.DataEndpoint

com.northconcepts.datapipeline.core.DataWriter

com.northconcepts.datapipeline.multiplex.SplitWriter

public class SplitWriter
extends DataWriter

Converts a single source DataReader into many downstream sources using one of the provided strategies.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	SplitWriter.IStrategy
static class	SplitWriter.Strategy

Nested classes/interfaces inherited from class com.northconcepts.datapipeline.core.DataEndpoint

DataEndpoint.State

Field Summary

Fields

Modifier and Type	Field and Description
static int	DEFAULT_QUEUE_SIZE
protected static Record	EOF
static Logger	log

Fields inherited from class com.northconcepts.datapipeline.core.DataEndpoint

lastRecord, PRODUCT, PRODUCT_VERSION, VENDOR, XML_INPUT_FACTORY_KEY

Fields inherited from class com.northconcepts.datapipeline.core.Endpoint

BUFFER_SIZE, captureElapsedTime, DEFAULT_READ_BUFFER_SIZE

Fields inherited from class com.northconcepts.datapipeline.core.DataObject

id, name, TIMESTAMP_FORMAT

Constructor Summary

Constructors

Constructor and Description
SplitWriter()
SplitWriter(SplitWriter.IStrategy strategy)

Method Summary

Modifier and Type	Method and Description
void	close() Indicates that this endpoint has finished reading or writing.
DataReader	createReader()
int	getQueueSize() Retrieves the buffer size for downstream readers of this splitter (default is 100 records).
SplitWriter.IStrategy	getStrategy()
List<SplitReader>	getTargets()
void	open() Makes this endpoint ready for reading or writing.
void	removeClosedTargets()
SplitWriter	setQueueSize(int queueSize) Sets the buffer size for downstream readers of this splitter (default is 100 records).
protected void	writeImpl(Record record) Overridden by subclasses to write the specified record to this DataWriter.

Methods inherited from class com.northconcepts.datapipeline.core.DataWriter

addExceptionProperties, available, getNestedEndpoint, getNestedWriter, getRootEndpoint, getRootWriter, getWriter, write

Methods inherited from class com.northconcepts.datapipeline.core.DataEndpoint

decrementRecordCount, enableJmx, getLastRecord, getRecordCount, getRecordCountAsBigInteger, getRecordCountAsString, incrementRecordCount, isRecordCountBigInteger, resetRecordCount, toString

Methods inherited from class com.northconcepts.datapipeline.core.Endpoint

addElapsedtime, assertClosed, assertNotOpened, assertOpened, finalize, getClosedOn, getDescription, getElapsedTime, getElapsedTimeAsString, getOpenedOn, getOpenElapsedTime, getOpenElapsedTimeAsString, getSelfTime, getSelfTimeAsString, getState, isCaptureElapsedTime, isClosed, isOpen, setCaptureElapsedTime, setDescription

Methods inherited from class com.northconcepts.datapipeline.core.DataObject

exception, exception, exception, getId, getName, resetID

Methods inherited from class java.lang.Object

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

Field Detail

log

public static final Logger log

DEFAULT_QUEUE_SIZE

public static final int DEFAULT_QUEUE_SIZE

See Also:

Constant Field Values

EOF

protected static final Record EOF

Constructor Detail

SplitWriter

public SplitWriter(SplitWriter.IStrategy strategy)

SplitWriter

public SplitWriter()

Method Detail

getStrategy

public SplitWriter.IStrategy getStrategy()

getTargets

public List<SplitReader> getTargets()

getQueueSize

public int getQueueSize()

Retrieves the buffer size for downstream readers of this splitter (default is 100 records).

setQueueSize

public SplitWriter setQueueSize(int queueSize)

Sets the buffer size for downstream readers of this splitter (default is 100 records).

createReader

public DataReader createReader()

writeImpl

protected void writeImpl(Record record)
                  throws Throwable

Description copied from class: DataWriter

Overridden by subclasses to write the specified record to this DataWriter.

Contract for subclasses (see also docs/authoring/DataWriter.md):

• Do not call this method directly — DataWriter.write(Record) is the template method that wraps exceptions, increments the record count, and attaches the offending record to thrown DataExceptions.
• Do not call DataEndpoint.incrementRecordCount() here; DataWriter.write(Record) already does.
• Throw raw exceptions; DataWriter.write(Record) wraps them via exception(throwable).setRecord(record).

Specified by:

writeImpl in class DataWriter

Throws:

Throwable

open

public void open()
          throws DataException

Description copied from class: DataEndpoint

Makes this endpoint ready for reading or writing.

Overrides:

open in class DataEndpoint

Throws:

DataException

close

public void close()
           throws DataException

Description copied from class: DataEndpoint

Indicates that this endpoint has finished reading or writing.

Overrides:

close in class DataEndpoint

Throws:

DataException

removeClosedTargets

public void removeClosedTargets()