org.eclipse.scada.da.master.common.block

Class BlockHandlerImpl

java.lang.Object

org.eclipse.scada.da.master.AbstractMasterHandlerImpl

org.eclipse.scada.da.master.AbstractConfigurableMasterHandlerImpl

org.eclipse.scada.da.master.common.AbstractCommonHandlerImpl

org.eclipse.scada.da.master.common.block.BlockHandlerImpl

All Implemented Interfaces:

MasterItemHandler

public class BlockHandlerImpl
extends AbstractCommonHandlerImpl

Nested Class Summary

Nested classes/interfaces inherited from class org.eclipse.scada.da.master.common.AbstractCommonHandlerImpl

AbstractCommonHandlerImpl.AbstractConfiguration

Field Summary

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

eventAttributes

Constructor Summary

Constructors

Constructor and Description
BlockHandlerImpl(java.lang.String configurationId, EventProcessor eventProcessor, poolTracker, int priority, caTracker)

Method Summary

Methods

Modifier and Type	Method and Description
protected Event.EventBuilder	createEvent(UserInformation user, java.lang.String message, java.lang.Object value)
protected WriteAttributeResults	handleUpdate(java.util.Map<java.lang.String,Variant> attributes, OperationParameters operationParameters) This method will be called on write request that have attributes which match our prefix.
protected void	injectAttributes(DataItemValue.Builder builder)
protected void	processDataUpdate(java.util.Map<java.lang.String,java.lang.Object> context, DataItemValue.Builder builder)
WriteRequestResult	processWrite(WriteRequest request) Process the write request
protected void	publishEvent(UserInformation user, java.lang.String message, java.lang.Object value, java.lang.String eventType)
void	update(UserInformation userInformation, java.util.Map<java.lang.String,java.lang.String> parameters)
protected <T> T	updateValue(UserInformation userInformation, java.lang.String message, T newValue, T oldValue)

Methods inherited from class org.eclipse.scada.da.master.common.AbstractCommonHandlerImpl

createEventBuilder, dataUpdate, injectEventAttributes

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

getPrefixed, updateConfiguration, updateConfiguration

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

addItem, createTrackers, dispose, getMasterItems, removeItem, reprocess

Methods inherited from class java.lang.Object

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

Constructor Detail

BlockHandlerImpl

public BlockHandlerImpl(java.lang.String configurationId,
                EventProcessor eventProcessor,
                 poolTracker,
                int priority,
                 caTracker)

Method Detail

processDataUpdate

protected void processDataUpdate(java.util.Map<java.lang.String,java.lang.Object> context,
                     DataItemValue.Builder builder)
                          throws java.lang.Exception

Specified by:

processDataUpdate in class AbstractCommonHandlerImpl

Throws:

java.lang.Exception

processWrite

public WriteRequestResult processWrite(WriteRequest request)

Description copied from class: AbstractMasterHandlerImpl

Process the write request

This implementation does nothing and can be overridden by derived implementations.

Specified by:

processWrite in interface MasterItemHandler

Overrides:

processWrite in class AbstractConfigurableMasterHandlerImpl

Parameters:

request - the write request to handle

Returns:

the resulting write request

update

public void update(UserInformation userInformation,
          java.util.Map<java.lang.String,java.lang.String> parameters)
            throws java.lang.Exception

Overrides:

update in class AbstractMasterHandlerImpl

Throws:

java.lang.Exception

updateValue

protected <T> T updateValue(UserInformation userInformation,
                java.lang.String message,
                T newValue,
                T oldValue)

injectAttributes

protected void injectAttributes(DataItemValue.Builder builder)

handleUpdate

protected WriteAttributeResults handleUpdate(java.util.Map<java.lang.String,Variant> attributes,
                                 OperationParameters operationParameters)
                                      throws java.lang.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:

java.lang.Exception - if anything goes wrong

publishEvent

protected void publishEvent(UserInformation user,
                java.lang.String message,
                java.lang.Object value,
                java.lang.String eventType)

createEvent

protected Event.EventBuilder createEvent(UserInformation user,
                             java.lang.String message,
                             java.lang.Object value)