org.eclipse.scada.ae.monitor.script

Class ScriptMonitor.InjectMasterHandler

java.lang.Object

org.eclipse.scada.da.master.AbstractMasterHandlerImpl

org.eclipse.scada.da.master.AbstractConfigurableMasterHandlerImpl

org.eclipse.scada.ae.monitor.script.MultiMasterHandler

org.eclipse.scada.ae.monitor.script.ScriptMonitor.InjectMasterHandler

All Implemented Interfaces:

MasterItemHandler

Enclosing class:

ScriptMonitor

public class ScriptMonitor.InjectMasterHandler
extends MultiMasterHandler

Field Summary

Fields inherited from class org.eclipse.scada.da.master.AbstractMasterHandlerImpl

eventAttributes

Constructor Summary

Constructors

Constructor and Description
InjectMasterHandler(String configurationId, ObjectPoolTracker<MasterItem> poolTracker, int priority, org.osgi.util.tracker.ServiceTracker<ConfigurationAdministrator,ConfigurationAdministrator> caTracker, String prefix, String factoryId)

Method Summary

Modifier and Type	Method and Description
void	dataUpdate(Map<String,Object> context, DataItemValue.Builder value) Called when data changed or the handler chain changed.
protected WriteAttributeResults	handleUpdate(Map<String,Variant> attributes, OperationParameters operationParameters) This method will be called on write request that have attributes which match our prefix.
protected void	reprocess()

Methods inherited from class org.eclipse.scada.da.master.AbstractConfigurableMasterHandlerImpl

getPrefixed, processWrite, updateConfiguration, updateConfiguration

Methods inherited from class org.eclipse.scada.da.master.AbstractMasterHandlerImpl

addItem, createTrackers, dispose, getMasterItems, removeItem, update

Methods inherited from class java.lang.Object

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

Constructor Detail

InjectMasterHandler

public InjectMasterHandler(String configurationId,
                           ObjectPoolTracker<MasterItem> poolTracker,
                           int priority,
                           org.osgi.util.tracker.ServiceTracker<ConfigurationAdministrator,ConfigurationAdministrator> caTracker,
                           String prefix,
                           String factoryId)

Method Detail

dataUpdate

public void dataUpdate(Map<String,Object> context,
                       DataItemValue.Builder value)

Description copied from interface: MasterItemHandler

Called when data changed or the handler chain changed.

The call gets a context object provided which each handler can use to store context information of one calculation run. Each calculation run gets a fresh new context. The context is intended to pass data from one handler to the next.

Although the value parameter is a mutable type, the handler may only make changes inside the dataUpdate method.

Specified by:

dataUpdate in interface MasterItemHandler

Specified by:

dataUpdate in class AbstractMasterHandlerImpl

Parameters:

context - the context object

value - the changed value

handleUpdate

protected WriteAttributeResults handleUpdate(Map<String,Variant> attributes,
                                             OperationParameters operationParameters)
                                      throws Exception

Description copied from class: AbstractConfigurableMasterHandlerImpl

This method will be called on write request that have attributes which match our prefix.

All attributes that are processed must be returned in the result

Specified by:

handleUpdate in class AbstractConfigurableMasterHandlerImpl

Parameters:

attributes - the filtered attributes that match our prefix

Returns:

the attribute result of the written attributes

Throws:

Exception - if anything goes wrong

reprocess

protected void reprocess()

Overrides:

reprocess in class AbstractMasterHandlerImpl