com.espertech.esper.common.internal.epl.expression.table

Class ExprTableIdentNode

java.lang.Object

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

com.espertech.esper.common.internal.epl.expression.table.ExprTableIdentNode

All Implemented Interfaces:

ExprForge, ExprForgeInstrumentable, ExprNode, ExprNodeRenderable, ExprValidator, Serializable

public class ExprTableIdentNode
extends ExprNodeBase
implements ExprForgeInstrumentable

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
ExprTableIdentNode(TableMetaData tableMetadata, String streamOrPropertyName, String unresolvedPropertyName, Class returnType, int streamNum, int columnNum)

Method Summary

Modifier and Type	Method and Description
boolean	equalsNode(ExprNode node, boolean ignoreStreamPrefix) Return true if a expression node semantically equals the current node, or false if not.
CodegenExpression	evaluateCodegen(Class requiredType, CodegenMethodScope parent, ExprForgeCodegenSymbol symbols, CodegenClassScope codegenClassScope)
CodegenExpression	evaluateCodegenUninstrumented(Class requiredType, CodegenMethodScope parent, ExprForgeCodegenSymbol symbols, CodegenClassScope codegenClassScope)
Class	getEvaluationType()
ExprEvaluator	getExprEvaluator()
ExprForge	getForge()
ExprForgeConstantType	getForgeConstantType()
ExprNode	getForgeRenderable()
ExprPrecedenceEnum	getPrecedence() Returns precedence.
boolean	isConstantResult()
static Object	tableColumnAggValue(int streamNum, int column, EventBean[] eventsPerStream, boolean isNewData, ExprEvaluatorContext ctx) NOTE: Code-generation-invoked method, method name and parameter order matters
void	toPrecedenceFreeEPL(StringWriter writer)
ExprNode	validate(ExprValidationContext validationContext)

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

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

Methods inherited from class java.lang.Object

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

Constructor Detail

ExprTableIdentNode

public ExprTableIdentNode(TableMetaData tableMetadata,
                          String streamOrPropertyName,
                          String unresolvedPropertyName,
                          Class returnType,
                          int streamNum,
                          int columnNum)

Method Detail

toPrecedenceFreeEPL

public void toPrecedenceFreeEPL(StringWriter writer)

Specified by:

toPrecedenceFreeEPL in class ExprNodeBase

getPrecedence

public ExprPrecedenceEnum getPrecedence()

Description copied from interface: ExprNode

Returns precedence.

Specified by:

getPrecedence in interface ExprNode

Returns:

precedence

isConstantResult

public boolean isConstantResult()

equalsNode

public boolean equalsNode(ExprNode node,
                          boolean ignoreStreamPrefix)

Description copied from interface: ExprNode

Return true if a expression node semantically equals the current node, or false if not.

Concrete implementations should compare the type and any additional information that impact the evaluation of a node.

Specified by:

equalsNode in interface ExprNode

Parameters:

node - to compare to

ignoreStreamPrefix - when the equals-comparison can ignore prefix of event properties

Returns:

true if semantically equal, or false if not equals

validate

public ExprNode validate(ExprValidationContext validationContext)
                  throws ExprValidationException

Specified by:

validate in interface ExprValidator

Throws:

ExprValidationException

evaluateCodegenUninstrumented

public CodegenExpression evaluateCodegenUninstrumented(Class requiredType,
                                                       CodegenMethodScope parent,
                                                       ExprForgeCodegenSymbol symbols,
                                                       CodegenClassScope codegenClassScope)

Specified by:

evaluateCodegenUninstrumented in interface ExprForgeInstrumentable

evaluateCodegen

public CodegenExpression evaluateCodegen(Class requiredType,
                                         CodegenMethodScope parent,
                                         ExprForgeCodegenSymbol symbols,
                                         CodegenClassScope codegenClassScope)

Specified by:

evaluateCodegen in interface ExprForge

getForgeConstantType

public ExprForgeConstantType getForgeConstantType()

Specified by:

getForgeConstantType in interface ExprForge

getExprEvaluator

public ExprEvaluator getExprEvaluator()

Specified by:

getExprEvaluator in interface ExprForge

getEvaluationType

public Class getEvaluationType()

Specified by:

getEvaluationType in interface ExprForge

getForge

public ExprForge getForge()

Specified by:

getForge in interface ExprNode

getForgeRenderable

public ExprNode getForgeRenderable()

Specified by:

getForgeRenderable in interface ExprForge

tableColumnAggValue

public static Object tableColumnAggValue(int streamNum,
                                         int column,
                                         EventBean[] eventsPerStream,
                                         boolean isNewData,
                                         ExprEvaluatorContext ctx)

NOTE: Code-generation-invoked method, method name and parameter order matters

Parameters:

streamNum - stream num

column - col

eventsPerStream - events

isNewData - new-data flow

ctx - context

Returns:

value