com.espertech.esper.epl.table.strategy

Class ExprTableExprEvaluatorAccess

java.lang.Object

com.espertech.esper.epl.table.strategy.ExprTableExprEvaluatorBase

com.espertech.esper.epl.table.strategy.ExprTableExprEvaluatorAccess

All Implemented Interfaces:

ExprEvaluator, ExprEvaluatorEnumeration

public class ExprTableExprEvaluatorAccess
extends ExprTableExprEvaluatorBase
implements ExprEvaluator, ExprEvaluatorEnumeration

Field Summary

Fields inherited from class com.espertech.esper.epl.table.strategy.ExprTableExprEvaluatorBase

exprNode, returnType, streamNum, subpropName, tableName

Constructor Summary

Constructors

Constructor and Description
ExprTableExprEvaluatorAccess(ExprNode exprNode, String tableName, String subpropName, int streamNum, Class returnType, AggregationAccessorSlotPair accessAccessorSlotPair, EventType eventTypeColl)

Method Summary

Modifier and Type	Method and Description
Object	evaluate(EventBean[] eventsPerStream, boolean isNewData, ExprEvaluatorContext context) Evaluate event tuple and return result.
EventBean	evaluateGetEventBean(EventBean[] eventsPerStream, boolean isNewData, ExprEvaluatorContext context)
Collection<EventBean>	evaluateGetROCollectionEvents(EventBean[] eventsPerStream, boolean isNewData, ExprEvaluatorContext context)
Collection	evaluateGetROCollectionScalar(EventBean[] eventsPerStream, boolean isNewData, ExprEvaluatorContext context)
Class	getComponentTypeCollection()
EventType	getEventTypeCollection(EventAdapterService eventAdapterService, int statementId)
EventType	getEventTypeSingle(EventAdapterService eventAdapterService, int statementId)
Class	getType() Returns the type that the node's evaluate method returns an instance of.

Methods inherited from class java.lang.Object

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

Constructor Detail

ExprTableExprEvaluatorAccess

public ExprTableExprEvaluatorAccess(ExprNode exprNode,
                                    String tableName,
                                    String subpropName,
                                    int streamNum,
                                    Class returnType,
                                    AggregationAccessorSlotPair accessAccessorSlotPair,
                                    EventType eventTypeColl)

Method Detail

evaluate

public Object evaluate(EventBean[] eventsPerStream,
                       boolean isNewData,
                       ExprEvaluatorContext context)

Description copied from interface: ExprEvaluator

Evaluate event tuple and return result.

Specified by:

evaluate in interface ExprEvaluator

Parameters:

eventsPerStream - - event tuple

isNewData - - indicates whether we are dealing with new data (istream) or old data (rstream)

context - context for expression evaluation

Returns:

evaluation result, a boolean value for OR/AND-type evalution nodes.

getType

public Class getType()

Description copied from interface: ExprEvaluator

Returns the type that the node's evaluate method returns an instance of.

Specified by:

getType in interface ExprEvaluator

Returns:

type returned when evaluated

getEventTypeCollection

public EventType getEventTypeCollection(EventAdapterService eventAdapterService,
                                        int statementId)
                                 throws ExprValidationException

Specified by:

getEventTypeCollection in interface ExprEvaluatorEnumeration

Throws:

ExprValidationException

evaluateGetROCollectionEvents

public Collection<EventBean> evaluateGetROCollectionEvents(EventBean[] eventsPerStream,
                                                           boolean isNewData,
                                                           ExprEvaluatorContext context)

Specified by:

evaluateGetROCollectionEvents in interface ExprEvaluatorEnumeration

getComponentTypeCollection

public Class getComponentTypeCollection()
                                 throws ExprValidationException

Specified by:

getComponentTypeCollection in interface ExprEvaluatorEnumeration

Throws:

ExprValidationException

evaluateGetROCollectionScalar

public Collection evaluateGetROCollectionScalar(EventBean[] eventsPerStream,
                                                boolean isNewData,
                                                ExprEvaluatorContext context)

Specified by:

evaluateGetROCollectionScalar in interface ExprEvaluatorEnumeration

getEventTypeSingle

public EventType getEventTypeSingle(EventAdapterService eventAdapterService,
                                    int statementId)
                             throws ExprValidationException

Specified by:

getEventTypeSingle in interface ExprEvaluatorEnumeration

Throws:

ExprValidationException

evaluateGetEventBean

public EventBean evaluateGetEventBean(EventBean[] eventsPerStream,
                                      boolean isNewData,
                                      ExprEvaluatorContext context)

Specified by:

evaluateGetEventBean in interface ExprEvaluatorEnumeration