com.northconcepts.datapipeline.buffer

Class BufferedReader

java.lang.Object

com.northconcepts.datapipeline.core.DataObject

com.northconcepts.datapipeline.core.Endpoint

com.northconcepts.datapipeline.core.DataEndpoint

com.northconcepts.datapipeline.core.DataReader

com.northconcepts.datapipeline.core.ProxyReader

com.northconcepts.datapipeline.buffer.BufferedReader

public class BufferedReader
extends ProxyReader

A proxy that organizes incoming data by collecting records of the same type (using values in a subset of fields) to release them downstream together.

Nested Class Summary

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

DataEndpoint.State

Field Summary

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

fieldLineage, recordLineage

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, log, name, TIMESTAMP_FORMAT

Constructor Summary

Constructors

Constructor and Description
BufferedReader(DataReader reader, int queueSize, FieldList bufferByFields)
BufferedReader(DataReader reader, int queueSize, String... bufferByFields)

Method Summary

Modifier and Type	Method and Description
DataException	addExceptionProperties(DataException exception) Adds this endpoint's current state to a DataException.
void	close() Indicates that this endpoint has finished reading or writing.
FieldList	getBufferByFields()
long	getBuffersClosed()
long	getBuffersCreated()
BufferStrategy	getBufferStrategy()
boolean	isDebug()
void	open() Makes this endpoint ready for reading or writing.
protected Record	readImpl() Overridden by subclasses to read the next record from this DataReader.
BufferedReader	setBufferStrategy(BufferStrategy bufferStrategy)
BufferedReader	setDebug(boolean debug)
String	toString()

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

available, getNestedReader, interceptRecord, map, map, setNestedDataReader, setNestedDataReader

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

addLineage, getBufferSize, getNestedEndpoint, getReader, getRootEndpoint, getRootReader, isExhausted, isLineageSupported, isSaveLineage, peek, pop, push, read, setSaveLineage, skip

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

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

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

Constructor Detail

BufferedReader

public BufferedReader(DataReader reader,
                      int queueSize,
                      String... bufferByFields)

BufferedReader

public BufferedReader(DataReader reader,
                      int queueSize,
                      FieldList bufferByFields)

Method Detail

getBufferByFields

public FieldList getBufferByFields()

isDebug

public boolean isDebug()

setDebug

public BufferedReader setDebug(boolean debug)

getBufferStrategy

public BufferStrategy getBufferStrategy()

setBufferStrategy

public BufferedReader setBufferStrategy(BufferStrategy bufferStrategy)

getBuffersCreated

public long getBuffersCreated()

getBuffersClosed

public long getBuffersClosed()

open

public void open()

Description copied from class: DataEndpoint

Makes this endpoint ready for reading or writing.

Overrides:

open in class ProxyReader

close

public void close()
           throws DataException

Description copied from class: DataEndpoint

Indicates that this endpoint has finished reading or writing.

Overrides:

close in class ProxyReader

Throws:

DataException

readImpl

protected Record readImpl()
                   throws Throwable

Description copied from class: DataReader

Overridden by subclasses to read the next record from this DataReader. The default implementation of DataReader.read() now insures that this method will not be called again after it returns a null.

If no record is available, null will be returned.

Overrides:

readImpl in class ProxyReader

Throws:

Throwable

addExceptionProperties

public DataException addExceptionProperties(DataException exception)

Description copied from class: Endpoint

Adds this endpoint's current state to a DataException. Since this method is called whenever an exception is thrown, subclasses should override it to add their specific information.

Overrides:

addExceptionProperties in class ProxyReader

toString

public String toString()

Overrides:

toString in class DataEndpoint