com.graphaware.writer.neo4j

Class TxPerTaskWriter

java.lang.Object

com.google.common.util.concurrent.AbstractScheduledService

com.graphaware.writer.service.QueueBackedScheduledService<RunnableFuture<?>>

com.graphaware.writer.neo4j.SingleThreadedWriter

com.graphaware.writer.neo4j.TxPerTaskWriter

All Implemented Interfaces:

com.google.common.util.concurrent.Service, Neo4jWriter, Writer

public class TxPerTaskWriter
extends SingleThreadedWriter
implements Neo4jWriter

SingleThreadedWriter that writes each task in a separate transaction.

Nested Class Summary

Nested classes/interfaces inherited from class com.google.common.util.concurrent.AbstractScheduledService

com.google.common.util.concurrent.AbstractScheduledService.CustomScheduler, com.google.common.util.concurrent.AbstractScheduledService.Scheduler

Nested classes/interfaces inherited from interface com.google.common.util.concurrent.Service

com.google.common.util.concurrent.Service.Listener, com.google.common.util.concurrent.Service.State

Field Summary

Fields inherited from class com.graphaware.writer.neo4j.SingleThreadedWriter

database

Fields inherited from class com.graphaware.writer.service.QueueBackedScheduledService

DEFAULT_QUEUE_CAPACITY, queue

Constructor Summary

Constructors

Constructor and Description
TxPerTaskWriter(org.neo4j.graphdb.GraphDatabaseService database) Construct a new writer with a default queue capacity of 10,000.
TxPerTaskWriter(org.neo4j.graphdb.GraphDatabaseService database, int queueCapacity) Construct a new writer.

Method Summary

Modifier and Type	Method and Description
protected <T> RunnableFuture<T>	createTask(Callable<T> task) Create a runnable future from the given task.
protected void	runOneIteration()

Methods inherited from class com.graphaware.writer.neo4j.SingleThreadedWriter

block, offer, start, stop, write, write, write

Methods inherited from class com.graphaware.writer.service.QueueBackedScheduledService

equals, hashCode, logEmptyQueue, loggingFrequencyMs, offer, scheduler, shutDown

Methods inherited from class com.google.common.util.concurrent.AbstractScheduledService

addListener, awaitRunning, awaitRunning, awaitTerminated, awaitTerminated, executor, failureCause, isRunning, serviceName, startAsync, startUp, state, stopAsync, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface com.graphaware.writer.neo4j.Neo4jWriter

write, write, write

Methods inherited from interface com.graphaware.writer.Writer

start, stop

Constructor Detail

TxPerTaskWriter

public TxPerTaskWriter(org.neo4j.graphdb.GraphDatabaseService database)

Construct a new writer with a default queue capacity of 10,000.

Parameters:

database - to write to.

TxPerTaskWriter

public TxPerTaskWriter(org.neo4j.graphdb.GraphDatabaseService database,
                       int queueCapacity)

Construct a new writer.

Parameters:

database - to write to.

queueCapacity - capacity of the queue.

Method Detail

createTask

protected <T> RunnableFuture<T> createTask(Callable<T> task)

Create a runnable future from the given task.

Specified by:

createTask in class SingleThreadedWriter

Parameters:

task - task.

Returns:

future.

runOneIteration

protected void runOneIteration()
                        throws Exception

Specified by:

runOneIteration in class com.google.common.util.concurrent.AbstractScheduledService

Throws:

Exception