Package org.apache.nifi.cdc.event.io

Class AbstractEventWriter<T extends EventInfo>

java.lang.Object

org.apache.nifi.cdc.event.io.AbstractEventWriter<T>

All Implemented Interfaces:

EventWriter<T>

public abstract class AbstractEventWriter<T extends EventInfo>
extends Object
implements EventWriter<T>

An abstract class that outputs common information (event type, timestamp, e.g.) about CDC events.

Field Summary

Fields

Modifier and Type	Field	Description
private final com.fasterxml.jackson.core.JsonFactory	JSON_FACTORY
protected com.fasterxml.jackson.core.JsonGenerator	jsonGenerator

Fields inherited from interface org.apache.nifi.cdc.event.io.EventWriter

APPLICATION_JSON, CDC_EVENT_TYPE_ATTRIBUTE, SEQUENCE_ID_KEY

Constructor Summary

Constructors

Constructor	Description
AbstractEventWriter()

Method Summary

Modifier and Type	Method	Description
protected com.fasterxml.jackson.core.JsonGenerator	createJsonGenerator(OutputStream out)
protected void	endFile()
protected void	endJson()
protected void	startJson(OutputStream outputStream, T event)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.nifi.cdc.event.io.EventWriter

writeEvent

Field Details

JSON_FACTORY

private final com.fasterxml.jackson.core.JsonFactory JSON_FACTORY

jsonGenerator

protected com.fasterxml.jackson.core.JsonGenerator jsonGenerator

Constructor Details

AbstractEventWriter

public AbstractEventWriter()

Method Details

startJson

protected void startJson(OutputStream outputStream,
 T event)
                  throws IOException

Throws:

IOException

endJson

protected void endJson()
                throws IOException

Throws:

IOException

endFile

protected void endFile()
                throws IOException

Throws:

IOException

createJsonGenerator

protected com.fasterxml.jackson.core.JsonGenerator createJsonGenerator(OutputStream out)
                                                                throws IOException

Throws:

IOException