org.diirt.datasource

Class WriteCache<T>

java.lang.Object

org.diirt.datasource.WriteCache<T>

Type Parameters:

T - the payload type to be held in the cache

All Implemented Interfaces:

WriteFunction<T>

public class WriteCache<T>
extends Object
implements WriteFunction<T>

Represent part of the write recipe that holds the value for one pv.

Author:

carcassi

Constructor Summary

Constructors

Constructor and Description
WriteCache() Creates a new cache.
WriteCache(String channelName) Creates a new cache for the given channel name.

Method Summary

Modifier and Type	Method and Description
String	getChannelName() The channel associated to this cache
Collection<String>	getPrecedingChannels() Returns all the channels in the same recipe that should be written before writing the channel for this cache.
T	getValue() Returns the value in the cache.
void	setPrecedingChannels(List<String> precedingChannels) Changes which channels need to be written before the channel for this cache can be written.
void	writeValue(T newValue) Changes the value in the cache.

Methods inherited from class java.lang.Object

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

Constructor Detail

WriteCache

public WriteCache()

Creates a new cache.

WriteCache

public WriteCache(String channelName)

Creates a new cache for the given channel name.

Parameters:

channelName - the channel name

Method Detail

getValue

public T getValue()

Returns the value in the cache.

Returns:

value in the cache

writeValue

public void writeValue(T newValue)

Changes the value in the cache.

Specified by:

writeValue in interface WriteFunction<T>

Parameters:

newValue - the new value

setPrecedingChannels

public void setPrecedingChannels(List<String> precedingChannels)

Changes which channels need to be written before the channel for this cache can be written.

Parameters:

precedingChannels - a list of channel names

getPrecedingChannels

public Collection<String> getPrecedingChannels()

Returns all the channels in the same recipe that should be written before writing the channel for this cache.

Returns:

a list of channel names

getChannelName

public String getChannelName()

The channel associated to this cache

Returns:

the channel name