org.apache.flume.channel.jdbc.impl

Class JdbcChannelProviderImpl

java.lang.Object

org.apache.flume.channel.jdbc.impl.JdbcChannelProviderImpl

All Implemented Interfaces:

JdbcChannelProvider

public class JdbcChannelProviderImpl
extends Object
implements JdbcChannelProvider

Constructor Summary

Constructors

Constructor and Description
JdbcChannelProviderImpl()

Method Summary

Modifier and Type	Method and Description
void	close() Deinitializes the channel provider.
JdbcTransactionImpl	getTransaction()
void	initialize(Context context) Initializes the channel provider.
void	persistEvent(String channel, Event event) Writes the event to the persistent store.
Event	removeEvent(String channelName) Removes the next event for the named channel from the underlying persistent store.
protected void	updateCurrentChannelSize(long delta) A callback method invoked from individual transaction instances after a successful commit.

Methods inherited from class java.lang.Object

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

Constructor Detail

JdbcChannelProviderImpl

public JdbcChannelProviderImpl()

Method Detail

initialize

public void initialize(Context context)

Description copied from interface: JdbcChannelProvider

Initializes the channel provider. This method must be called before the channel can be used in any way.

Specified by:

initialize in interface JdbcChannelProvider

Parameters:

context - the configuration for the system

close

public void close()

Description copied from interface: JdbcChannelProvider

Deinitializes the channel provider. Once this method is called, the channel provider cannot be used and must be discarded.

Specified by:

close in interface JdbcChannelProvider

persistEvent

public void persistEvent(String channel,
                         Event event)

Description copied from interface: JdbcChannelProvider

Writes the event to the persistent store.

Specified by:

persistEvent in interface JdbcChannelProvider

removeEvent

public Event removeEvent(String channelName)

Description copied from interface: JdbcChannelProvider

Removes the next event for the named channel from the underlying persistent store.

Specified by:

removeEvent in interface JdbcChannelProvider

Returns:

getTransaction

public JdbcTransactionImpl getTransaction()

Specified by:

getTransaction in interface JdbcChannelProvider

Returns:

the transaction associated with the current thread.

updateCurrentChannelSize

protected void updateCurrentChannelSize(long delta)

A callback method invoked from individual transaction instances after a successful commit. The argument passed is the net number of events to be added to the current size as tracked by the provider.

Parameters:

delta - the net number of events to be added to reflect the current size of the channel