org.eclipse.milo.opcua.sdk.server.items

Class MonitoredDataItem

java.lang.Object

org.eclipse.milo.opcua.sdk.server.items.BaseMonitoredItem<DataValue>

org.eclipse.milo.opcua.sdk.server.items.MonitoredDataItem

All Implemented Interfaces:

DataItem, MonitoredItem

public class MonitoredDataItem
extends BaseMonitoredItem<DataValue>
implements DataItem

Field Summary

Fields

Modifier and Type	Field and Description
static DataChangeFilter	DEFAULT_FILTER

Fields inherited from class org.eclipse.milo.opcua.sdk.server.items.BaseMonitoredItem

clientHandle, discardOldest, id, monitoringMode, queue, queueSize, readValueId, samplingInterval, server, session, subscriptionId, timestamps, triggered, triggeredItems

Constructor Summary

Constructors

Constructor and Description
MonitoredDataItem(OpcUaServer server, Session session, UInteger id, UInteger subscriptionId, ReadValueId readValueId, MonitoringMode monitoringMode, TimestampsToReturn timestamps, UInteger clientHandle, double samplingInterval, UInteger queueSize, boolean discardOldest)

Method Summary

Modifier and Type	Method and Description
protected void	enqueue(@NotNull DataValue value)
ExtensionObject	getFilterResult()
void	installFilter(MonitoringFilter filter)
boolean	isSamplingEnabled()
void	maybeSendLastValue()
void	setMonitoringMode(MonitoringMode monitoringMode)
void	setQuality(StatusCode quality) Apply a new StatusCode to the last value that passed the filter and then set the derived value.
void	setValue(DataValue value) Set the latest sampled value.
protected MonitoredItemNotification	wrapQueueValue(DataValue value)

Methods inherited from class org.eclipse.milo.opcua.sdk.server.items.BaseMonitoredItem

getClientHandle, getId, getMonitoringMode, getNotifications, getQueueSize, getReadValueId, getSamplingInterval, getSession, getSubscriptionId, getTimestampsToReturn, getTriggeredItems, hasNotifications, isDiscardOldest, isTriggered, modify, setQueueSize, setSession

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.eclipse.milo.opcua.sdk.server.api.DataItem

getSamplingInterval

Methods inherited from interface org.eclipse.milo.opcua.sdk.server.api.MonitoredItem

getId, getReadValueId, getSession, getSubscriptionId, getTimestampsToReturn

Field Detail

DEFAULT_FILTER

public static final DataChangeFilter DEFAULT_FILTER

Constructor Detail

MonitoredDataItem

public MonitoredDataItem(OpcUaServer server,
                         Session session,
                         UInteger id,
                         UInteger subscriptionId,
                         ReadValueId readValueId,
                         MonitoringMode monitoringMode,
                         TimestampsToReturn timestamps,
                         UInteger clientHandle,
                         double samplingInterval,
                         UInteger queueSize,
                         boolean discardOldest)

Method Detail

setValue

public void setValue(DataValue value)

Description copied from interface: DataItem

Set the latest sampled value.

Specified by:

setValue in interface DataItem

Parameters:

value - the latest sampled value.

enqueue

protected void enqueue(@NotNull
                       @NotNull DataValue value)

Specified by:

enqueue in class BaseMonitoredItem<DataValue>

setQuality

public void setQuality(StatusCode quality)

Description copied from interface: DataItem

Apply a new StatusCode to the last value that passed the filter and then set the derived value.

Specified by:

setQuality in interface DataItem

Parameters:

quality - the StatusCode to apply.

isSamplingEnabled

public boolean isSamplingEnabled()

Specified by:

isSamplingEnabled in interface MonitoredItem

Returns:

true if this item should be sampled.

setMonitoringMode

public void setMonitoringMode(MonitoringMode monitoringMode)

Overrides:

setMonitoringMode in class BaseMonitoredItem<DataValue>

maybeSendLastValue

public void maybeSendLastValue()

installFilter

public void installFilter(MonitoringFilter filter)
                   throws UaException

Specified by:

installFilter in class BaseMonitoredItem<DataValue>

Throws:

UaException

getFilterResult

public ExtensionObject getFilterResult()

Specified by:

getFilterResult in class BaseMonitoredItem<DataValue>

wrapQueueValue

protected MonitoredItemNotification wrapQueueValue(DataValue value)

Specified by:

wrapQueueValue in class BaseMonitoredItem<DataValue>