com.prosysopc.ua.server

Class FilterOperatorDefinition

java.lang.Object

com.prosysopc.ua.server.FilterOperatorDefinition

public class FilterOperatorDefinition
extends Object

Parsed implementation of a single FilterOperator in a ContentFilterDefinition

Field Summary

Fields

Modifier and Type	Field and Description
protected List<com.prosysopc.ua.server.FilterOperatorDefinition.OperandDefinition>	operandList

Constructor Summary

Constructors

Constructor and Description
FilterOperatorDefinition()

Method Summary

Modifier and Type	Method and Description
protected void	applyNodeManager(NodeManagerRoot nodeManager)
protected Boolean	asBoolean(Variant value) Check if a Variant is null or contains a null (isEmpty)
protected static int	compareVariants(Variant left, Variant right)
Object	evaluate(EventData eventData, Boolean ignoreNull)
protected Boolean	eventTypeEquals(UaType filteredEventType, NodeId filteredEventTypeId, EventData eventData)
DiagnosticInfo	getElementDiagnosticInfo()
ContentFilterElementResult	getElementResult()
protected NodeManagerRoot	getNodeManager()
protected boolean	isNull(Variant value) Check if a Variant is null or contains a null (isEmpty)
static FilterOperatorDefinition	newOperator(FilterOperator filterOperator, Structure[] filterOperands, NodeManagerRoot nodeManagerRoot, FilterOperatorDefinition[] operatorList) Create a new filter operator, based on the filterOperator type and operands.
boolean	parse(Structure[] filterOperands, FilterOperatorDefinition[] operatorList, NodeManagerRoot nodeManagerRoot)
protected static boolean	setTypeOfEventData(EventData eventData, NodeManagerUaNode nodeManager)
protected void	validateOperand(com.prosysopc.ua.server.FilterOperatorDefinition.OperandDefinition operand, int index)

Methods inherited from class java.lang.Object

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

Field Detail

operandList

protected List<com.prosysopc.ua.server.FilterOperatorDefinition.OperandDefinition> operandList

Constructor Detail

FilterOperatorDefinition

public FilterOperatorDefinition()

Method Detail

newOperator

public static FilterOperatorDefinition newOperator(FilterOperator filterOperator,
                                                   Structure[] filterOperands,
                                                   NodeManagerRoot nodeManagerRoot,
                                                   FilterOperatorDefinition[] operatorList)

Create a new filter operator, based on the filterOperator type and operands.

Validates and parses the operands into the operator. If operands are invalid, respective status codes are set.

Parameters:

filterOperator -

filterOperands -

nodeManagerRoot - a node manager reference to use for mapping nodeIds to nodes

operatorList - list of operators that have been already parsed: these can be referred to from ElementOperands

Returns:

the created FilterOperatorDefinition object

compareVariants

protected static int compareVariants(Variant left,
                                     Variant right)

setTypeOfEventData

protected static boolean setTypeOfEventData(EventData eventData,
                                            NodeManagerUaNode nodeManager)

Parameters:

eventData -

Returns:

Throws:

StatusException

evaluate

public Object evaluate(EventData eventData,
                       Boolean ignoreNull)

Parameters:

eventData - the eventData to evaluate the operator against

ignoreNull - whether null values in eventData should be ignored, i.e. always return or use null for them

Returns:

getElementDiagnosticInfo

public DiagnosticInfo getElementDiagnosticInfo()

Returns:

getElementResult

public ContentFilterElementResult getElementResult()

Returns:

parse

public final boolean parse(Structure[] filterOperands,
                           FilterOperatorDefinition[] operatorList,
                           NodeManagerRoot nodeManagerRoot)

Parameters:

filterOperator - the filter operator

filterOperands - the encoded operands for the operator

operatorList -

Returns:

applyNodeManager

protected void applyNodeManager(NodeManagerRoot nodeManager)
                         throws StatusException

Throws:

StatusException

asBoolean

protected Boolean asBoolean(Variant value)

Check if a Variant is null or contains a null (isEmpty)

Parameters:

value -

Returns:

true if (value == null) || value.isEmpty()

eventTypeEquals

protected Boolean eventTypeEquals(UaType filteredEventType,
                                  NodeId filteredEventTypeId,
                                  EventData eventData)

Parameters:

filteredEventTypeId -

filteredEventType -

eventData -

getNodeManager

protected NodeManagerRoot getNodeManager()

Returns:

the nodeManager

isNull

protected boolean isNull(Variant value)

Check if a Variant is null or contains a null (isEmpty)

Parameters:

value -

Returns:

true if (value == null) || value.isEmpty()

validateOperand

protected void validateOperand(com.prosysopc.ua.server.FilterOperatorDefinition.OperandDefinition operand,
                               int index)
                        throws StatusException

Parameters:

operand -

index -

Throws:

StatusException