Package org.scictrl.csshell.epics.server.processor

Class MemorySwitchValueProcessor

java.lang.Object

org.scictrl.csshell.epics.server.processor.AbstractValueProcessor

org.scictrl.csshell.epics.server.processor.MemoryValueProcessor

org.scictrl.csshell.epics.server.processor.MemorySwitchValueProcessor

All Implemented Interfaces:

PropertyChangeListener, EventListener, ValueProcessor

public class MemorySwitchValueProcessor
extends MemoryValueProcessor
implements PropertyChangeListener

Value processor, which sets forward PVs to off/on, remembers of forward PV was OOn before switching on and keeps that state.

Author:

igor@scictrl.com

Field Summary

Fields inherited from class org.scictrl.csshell.epics.server.processor.MemoryValueProcessor

fixed, lastChangeTimestamp, timestamp, value

Fields inherited from class org.scictrl.csshell.epics.server.processor.AbstractValueProcessor

log, record, trigger, type

Constructor Summary

Constructors

Constructor	Description
MemorySwitchValueProcessor()	Constructor for ForwardValueProcessor.

Method Summary

Modifier and Type	Method	Description
void	activate()	Record has now reference to Database.
void	configure(Record record, org.apache.commons.configuration.HierarchicalConfiguration config)	Configures the internals of value processor, provides reference to parent record and to configuration with root inside processor tag.
static final MemorySwitchValueProcessor	newProcessor(String name, gov.aps.jca.dbr.DBRType type, String description, String link)	Creates processor, configures it and returns it embedded within the returned record.
void	propertyChange(PropertyChangeEvent evt)
void	setValue(Object value)	Sets new value to the processor.

Methods inherited from class org.scictrl.csshell.epics.server.processor.MemoryValueProcessor

_forceValueUpdateEvent, _setValue, _setValue, _setValue, _setValue, convert, getChangeAccessTimestamp, getTimestamp, getValue, getValueAsBoolean, isFixed, newBooleanProcessor, newDoubleProcessor, newProcessor, newProcessor, setFixed

Methods inherited from class org.scictrl.csshell.epics.server.processor.AbstractValueProcessor

getName, getRecord, getTrigger, getType, process, toString

Methods inherited from class java.lang.Object

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

Constructor Details

MemorySwitchValueProcessor

public MemorySwitchValueProcessor()

Constructor for ForwardValueProcessor.

Method Details

newProcessor

public static final MemorySwitchValueProcessor newProcessor(String name,
 gov.aps.jca.dbr.DBRType type,
 String description,
 String link)

Creates processor, configures it and returns it embedded within the returned record.

Parameters:

name - name of the returned record

type - type of the returned record

description - the description of the record

link - the link of the returned processor

Returns:

new record with embedded and configured processor

configure

public void configure(Record record,
 org.apache.commons.configuration.HierarchicalConfiguration config)

Configures the internals of value processor, provides reference to parent record and to configuration with root inside processor tag. Parent record is not yet initialized, so does not have reference to Database, the Database reference will be available during activate call.

Specified by:

configure in interface ValueProcessor

Overrides:

configure in class MemoryValueProcessor

Parameters:

record - the parent record.

config - configuration with room inside processor tag.

activate

public void activate()

Record has now reference to Database. processor might want to connect to other records on this server or PVs on other servers. This can not be done until all records from configuration has been loaded. Call to this method signals to the processor that records has been loaded and linking to other values can be commenced.

Specified by:

activate in interface ValueProcessor

Overrides:

activate in class MemoryValueProcessor

setValue

public void setValue(Object value)

Sets new value to the processor. If value is different from current processor value, then event is fired. Timestamp is updated regardless if value is changed, since timestamp indicates last value update or confirmation. This method is used by remote EPICS entity or other record within same Database. By definition calling setValue must always update value, because further processing must be triggered.

Specified by:

setValue in interface ValueProcessor

Overrides:

setValue in class MemoryValueProcessor

Parameters:

value - a Object object

propertyChange

public void propertyChange(PropertyChangeEvent evt)

Specified by:

propertyChange in interface PropertyChangeListener