org.apache.streams.mongo

Class MongoPersistReader

java.lang.Object

org.apache.streams.mongo.MongoPersistReader

All Implemented Interfaces:

Serializable, StreamsOperation, StreamsPersistReader, StreamsProvider

public class MongoPersistReader
extends Object
implements StreamsPersistReader

MongoPersistReader reads documents from mongo.

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
class	MongoPersistReader.MongoPersistReaderTask

Field Summary

Fields

Modifier and Type	Field and Description
protected com.mongodb.MongoClient	client
protected com.mongodb.DBCollection	collection
protected com.mongodb.DBCursor	cursor
protected com.mongodb.DB	db
protected ReadWriteLock	lock
protected Queue<StreamsDatum>	persistQueue
static String	STREAMS_ID

Constructor Summary

Constructors

Constructor and Description
MongoPersistReader() KafkaPersistReader constructor - resolves KafkaConfiguration from JVM 'mongo'.
MongoPersistReader(MongoConfiguration config) KafkaPersistReader constructor - uses supplied MongoConfiguration.
MongoPersistReader(Queue<StreamsDatum> persistQueue) KafkaPersistReader constructor - uses supplied persistQueue.

Method Summary

Modifier and Type	Method and Description
void	cleanUp()
String	getId()
Queue<StreamsDatum>	getPersistQueue()
boolean	isRunning()
void	prepare(Object configurationObject)
protected StreamsDatum	prepareDatum(com.mongodb.DBObject dbObject)
StreamsResultSet	readAll()
StreamsResultSet	readCurrent()
StreamsResultSet	readNew(BigInteger sequence)
StreamsResultSet	readRange(org.joda.time.DateTime start, org.joda.time.DateTime end)
void	setPersistQueue(Queue<StreamsDatum> persistQueue)
void	startStream()
void	stop()
protected void	write(StreamsDatum entry)

Methods inherited from class java.lang.Object

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

Field Detail

STREAMS_ID

public static final String STREAMS_ID

See Also:

Constant Field Values

persistQueue

protected volatile Queue<StreamsDatum> persistQueue

client

protected com.mongodb.MongoClient client

db

protected com.mongodb.DB db

collection

protected com.mongodb.DBCollection collection

cursor

protected com.mongodb.DBCursor cursor

lock

protected final ReadWriteLock lock

Constructor Detail

MongoPersistReader

public MongoPersistReader()

KafkaPersistReader constructor - resolves KafkaConfiguration from JVM 'mongo'.

MongoPersistReader

public MongoPersistReader(MongoConfiguration config)

KafkaPersistReader constructor - uses supplied MongoConfiguration.

Parameters:

config - config

MongoPersistReader

public MongoPersistReader(Queue<StreamsDatum> persistQueue)

KafkaPersistReader constructor - uses supplied persistQueue.

Parameters:

persistQueue - persistQueue

Method Detail

setPersistQueue

public void setPersistQueue(Queue<StreamsDatum> persistQueue)

getPersistQueue

public Queue<StreamsDatum> getPersistQueue()

stop

public void stop()

getId

public String getId()

Specified by:

getId in interface StreamsOperation

prepare

public void prepare(Object configurationObject)

Specified by:

prepare in interface StreamsOperation

cleanUp

public void cleanUp()

Specified by:

cleanUp in interface StreamsOperation

prepareDatum

protected StreamsDatum prepareDatum(com.mongodb.DBObject dbObject)

readAll

public StreamsResultSet readAll()

Specified by:

readAll in interface StreamsPersistReader

startStream

public void startStream()

Specified by:

startStream in interface StreamsProvider

readCurrent

public StreamsResultSet readCurrent()

Specified by:

readCurrent in interface StreamsProvider

write

protected void write(StreamsDatum entry)

readNew

public StreamsResultSet readNew(BigInteger sequence)

Specified by:

readNew in interface StreamsPersistReader

Specified by:

readNew in interface StreamsProvider

readRange

public StreamsResultSet readRange(org.joda.time.DateTime start,
                                  org.joda.time.DateTime end)

Specified by:

readRange in interface StreamsPersistReader

Specified by:

readRange in interface StreamsProvider

isRunning

public boolean isRunning()

Specified by:

isRunning in interface StreamsProvider