com.espertech.esper.epl.expression.table

Class ExprTableAccessNodeSubpropAccessor

java.lang.Object

com.espertech.esper.epl.expression.core.ExprNodeBase

com.espertech.esper.epl.expression.table.ExprTableAccessNode

com.espertech.esper.epl.expression.table.ExprTableAccessNodeSubpropAccessor

All Implemented Interfaces:

ExprEvaluator, ExprEvaluatorEnumeration, ExprNode, ExprValidator, MetaDefItem, Serializable

public class ExprTableAccessNodeSubpropAccessor
extends ExprTableAccessNode
implements ExprEvaluator, ExprEvaluatorEnumeration

See Also:

Serialized Form

Field Summary

Fields inherited from class com.espertech.esper.epl.expression.table.ExprTableAccessNode

groupKeyEvaluators, strategy, tableName

Constructor Summary

Constructors

Constructor and Description
ExprTableAccessNodeSubpropAccessor(String tableName, String subpropName, ExprNode aggregateAccessMultiValueNode)

Method Summary

Modifier and Type	Method and Description
protected boolean	equalsNodeInternal(ExprTableAccessNode other)
Object	evaluate(EventBean[] eventsPerStream, boolean isNewData, ExprEvaluatorContext exprEvaluatorContext) 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)
AggregationAccessor	getAccessor()
ExprAggregateNodeBase	getAggregateAccessMultiValueNode()
Class	getComponentTypeCollection()
EventType	getEventTypeCollection(EventAdapterService eventAdapterService, int statementId)
EventType	getEventTypeSingle(EventAdapterService eventAdapterService, int statementId)
ExprEvaluator	getExprEvaluator()
String	getSubpropName()
Class	getType() Returns the type that the node's evaluate method returns an instance of.
void	toPrecedenceFreeEPL(StringWriter writer)
protected void	validateBindingInternal(ExprValidationContext validationContext, TableMetadata tableMetadata)

Methods inherited from class com.espertech.esper.epl.expression.table.ExprTableAccessNode

equalsNode, getGroupKeyEvaluators, getPrecedence, getTableName, hashCode, isConstantResult, setStrategy, toPrecedenceFreeEPLInternal, toPrecedenceFreeEPLInternal, validate, validateGroupKeys, validateSubpropertyGetCol

Methods inherited from class com.espertech.esper.epl.expression.core.ExprNodeBase

accept, accept, acceptChildnodes, addChildNode, addChildNodes, addChildNodeToFront, getChildNodes, replaceUnlistedChildNode, setChildNode, setChildNodes, toEPL

Methods inherited from class java.lang.Object

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

Constructor Detail

ExprTableAccessNodeSubpropAccessor

public ExprTableAccessNodeSubpropAccessor(String tableName,
                                          String subpropName,
                                          ExprNode aggregateAccessMultiValueNode)

Method Detail

getAggregateAccessMultiValueNode

public ExprAggregateNodeBase getAggregateAccessMultiValueNode()

getExprEvaluator

public ExprEvaluator getExprEvaluator()

Specified by:

getExprEvaluator in interface ExprNode

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

getAccessor

public AggregationAccessor getAccessor()

validateBindingInternal

protected void validateBindingInternal(ExprValidationContext validationContext,
                                       TableMetadata tableMetadata)
                                throws ExprValidationException

Specified by:

validateBindingInternal in class ExprTableAccessNode

Throws:

ExprValidationException

evaluate

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

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)

exprEvaluatorContext - context for expression evaluation

Returns:

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

getSubpropName

public String getSubpropName()

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

toPrecedenceFreeEPL

public void toPrecedenceFreeEPL(StringWriter writer)

Specified by:

toPrecedenceFreeEPL in class ExprNodeBase

equalsNodeInternal

protected boolean equalsNodeInternal(ExprTableAccessNode other)

Specified by:

equalsNodeInternal in class ExprTableAccessNode