org.diirt.support.ca

Class JCADataSource

java.lang.Object

org.diirt.datasource.DataSource

org.diirt.support.ca.JCADataSource

public class JCADataSource
extends DataSource

A data source that uses jca.

Type support can be configured by passing a custom JCATypeSupport to the constructor.

Author:

carcassi

Method Summary

Modifier and Type	Method and Description
void	close() Closes the DataSource and the resources associated with it.
protected ChannelHandler	createChannel(String channelName) Creates a channel handler for the given name.
gov.aps.jca.Context	getContext() The context used by the data source.
int	getMonitorMask() The monitor mask used for this data source.
boolean	isDbePropertySupported() Whether the metadata monitor should be established.
boolean	isHonorZeroPrecision() True if zero precision should be honored, or disregarded.
boolean	isRtypValueOnly() True if should only ask value for RTYP fields.
boolean	isVarArraySupported() True whether the context can use variable arrays (all array monitor request will have an element count of 0).

Methods inherited from class org.diirt.datasource.DataSource

channelHandlerLookupName, channelHandlerRegisterName, connectRead, connectWrite, disconnectRead, disconnectWrite, getChannels, isWriteable, write

Methods inherited from class java.lang.Object

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

Method Detail

close

public void close()

Description copied from class: DataSource

Closes the DataSource and the resources associated with it.

Overrides:

close in class DataSource

getContext

public gov.aps.jca.Context getContext()

The context used by the data source.

Returns:

the data source context

getMonitorMask

public int getMonitorMask()

The monitor mask used for this data source.

Returns:

the monitor mask

isDbePropertySupported

public boolean isDbePropertySupported()

Whether the metadata monitor should be established.

Returns:

true if using metadata monitors

createChannel

protected ChannelHandler createChannel(String channelName)

Description copied from class: DataSource

Creates a channel handler for the given name. In the simplest case, this is the only method a data source needs to implement.

Specified by:

createChannel in class DataSource

Parameters:

channelName - the name for a new channel

Returns:

a new handler

isVarArraySupported

public boolean isVarArraySupported()

True whether the context can use variable arrays (all array monitor request will have an element count of 0).

Returns:

true if variable size arrays are supported

isRtypValueOnly

public boolean isRtypValueOnly()

True if should only ask value for RTYP fields.

Returns:

true if asking for value only

isHonorZeroPrecision

public boolean isHonorZeroPrecision()

True if zero precision should be honored, or disregarded.

Returns:

true if zero precision setting is honored