org.epics.pvmanager.jca

Class JCATypeAdapter

java.lang.Object

org.epics.pvmanager.jca.JCATypeAdapter

All Implemented Interfaces:

DataSourceTypeAdapter<JCAConnectionPayload,JCAMessagePayload>

public abstract class JCATypeAdapter
extends Object
implements DataSourceTypeAdapter<JCAConnectionPayload,JCAMessagePayload>

Type adapter for JCA data source. Will match a channel based on the value type provided and the array flag. Will match the cache based on the type class.

Author:

carcassi

Constructor Summary

Constructors

Constructor and Description
JCATypeAdapter(Class<?> typeClass, gov.aps.jca.dbr.DBRType epicsValueType, gov.aps.jca.dbr.DBRType epicsMetaType, Boolean array) Creates a new type adapter.

Method Summary

Methods

Modifier and Type	Method and Description
abstract Object	createValue(gov.aps.jca.dbr.DBR value, gov.aps.jca.dbr.DBR metadata, JCAConnectionPayload connPayload) Given the value and the (optional) metadata, will create the new value.
Object	getSubscriptionParameter(ValueCache cache, JCAConnectionPayload connPayload)
int	match(ValueCache<?> cache, JCAConnectionPayload connPayload)
boolean	updateCache(ValueCache cache, JCAConnectionPayload connPayload, JCAMessagePayload message)

Methods inherited from class java.lang.Object

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

Constructor Detail

JCATypeAdapter

public JCATypeAdapter(Class<?> typeClass,
              gov.aps.jca.dbr.DBRType epicsValueType,
              gov.aps.jca.dbr.DBRType epicsMetaType,
              Boolean array)

Creates a new type adapter.

Parameters:

typeClass - the java type this adapter will create

epicsValueType - the epics type used for the monitor

epicsMetaType - the epics type for the get at connection time; null if no metadata is needed

array - true whether this will require an array type

Method Detail

match

public int match(ValueCache<?> cache,
        JCAConnectionPayload connPayload)

Specified by:

match in interface DataSourceTypeAdapter<JCAConnectionPayload,JCAMessagePayload>

getSubscriptionParameter

public Object getSubscriptionParameter(ValueCache cache,
                              JCAConnectionPayload connPayload)

Specified by:

getSubscriptionParameter in interface DataSourceTypeAdapter<JCAConnectionPayload,JCAMessagePayload>

updateCache

public boolean updateCache(ValueCache cache,
                  JCAConnectionPayload connPayload,
                  JCAMessagePayload message)

Specified by:

updateCache in interface DataSourceTypeAdapter<JCAConnectionPayload,JCAMessagePayload>

createValue

public abstract Object createValue(gov.aps.jca.dbr.DBR value,
                 gov.aps.jca.dbr.DBR metadata,
                 JCAConnectionPayload connPayload)

Given the value and the (optional) metadata, will create the new value.

Parameters:

value - the value taken from the monitor

metadata - the value taken as metadata

connPayload - the connection payload

Returns:

the new value