org.eclipse.scada.da.datasource.script

Class ScriptDataSource

java.lang.Object

org.eclipse.scada.da.datasource.base.AbstractDataSource

org.eclipse.scada.da.datasource.base.AbstractMultiSourceDataSource

org.eclipse.scada.da.datasource.script.ScriptDataSource

All Implemented Interfaces:

DataSource

public class ScriptDataSource
extends AbstractMultiSourceDataSource

Field Summary

Fields inherited from interface org.eclipse.scada.da.datasource.DataSource

DATA_SOURCE_ID

Constructor Summary

Constructors

Constructor and Description
ScriptDataSource(BundleContext context, poolTracker, java.util.concurrent.ScheduledExecutorService executor, EventProcessor eventProcessor)

Method Summary

Methods

Modifier and Type	Method and Description
protected WriteAttributeResults	convertAttributeResult(java.util.Map<java.lang.String,Variant> attributes, java.lang.Object result)
protected WriteResult	convertValueResult(java.lang.Object result)
protected void	executeScript(ScriptExecutor command)
protected java.util.concurrent.Executor	getExecutor() Return the executor to use for sending out events
protected void	handleChange(java.util.Map<java.lang.String,DataSourceHandler> sources) Handle data change
protected void	handleTimer()
protected java.lang.Object	performScript(ScriptExecutor command, javax.script.ScriptContext scriptContext)
protected java.lang.Object	performWrite(ScriptExecutor command, Variant value, java.util.Map<java.lang.String,Variant> attributes, OperationParameters operationParameters)
	startWriteAttributes(java.util.Map<java.lang.String,Variant> attributes, OperationParameters operationParameters)
	startWriteValue(Variant value, OperationParameters operationParameters)
void	update(java.util.Map<java.lang.String,java.lang.String> parameters)

Methods inherited from class org.eclipse.scada.da.datasource.base.AbstractMultiSourceDataSource

addDataSource, clearSources, dispose, getSourcesCopy, getType, setDataSources

Methods inherited from class org.eclipse.scada.da.datasource.base.AbstractDataSource

addListener, removeListener, updateData

Methods inherited from class java.lang.Object

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

Constructor Detail

ScriptDataSource

public ScriptDataSource(BundleContext context,
                 poolTracker,
                java.util.concurrent.ScheduledExecutorService executor,
                EventProcessor eventProcessor)

Method Detail

getExecutor

protected java.util.concurrent.Executor getExecutor()

Description copied from class: AbstractDataSource

Return the executor to use for sending out events

Specified by:

getExecutor in class AbstractDataSource

Returns:

the executor to use, must never be null

performWrite

protected java.lang.Object performWrite(ScriptExecutor command,
                            Variant value,
                            java.util.Map<java.lang.String,Variant> attributes,
                            OperationParameters operationParameters)
                                 throws java.lang.Exception

Throws:

java.lang.Exception

startWriteAttributes

public  startWriteAttributes(java.util.Map<java.lang.String,Variant> attributes,
                         OperationParameters operationParameters)

convertAttributeResult

protected WriteAttributeResults convertAttributeResult(java.util.Map<java.lang.String,Variant> attributes,
                                           java.lang.Object result)

convertValueResult

protected WriteResult convertValueResult(java.lang.Object result)

startWriteValue

public  startWriteValue(Variant value,
                    OperationParameters operationParameters)

update

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

Throws:

java.lang.Exception

handleTimer

protected void handleTimer()

handleChange

protected void handleChange(java.util.Map<java.lang.String,DataSourceHandler> sources)

Handle data change

Specified by:

handleChange in class AbstractMultiSourceDataSource

performScript

protected java.lang.Object performScript(ScriptExecutor command,
                             javax.script.ScriptContext scriptContext)
                                  throws java.lang.Exception

Throws:

java.lang.Exception

executeScript

protected void executeScript(ScriptExecutor command)