com.espertech.esper.epl.expression.core

Interface ExprConstantNode

All Superinterfaces:

ExprNode, ExprNodeRenderable, ExprValidator, MetaDefItem, java.io.Serializable

All Known Subinterfaces:

ExprVariableNode

All Known Implementing Classes:

ExprConstantNodeImpl, ExprDeclaredNodeImpl, ExprVariableNodeImpl

public interface ExprConstantNode
extends ExprNode

Represents a constant in an expressiun tree.

Method Summary

Modifier and Type	Method and Description
java.lang.Class	getConstantType()
java.lang.Object	getConstantValue(ExprEvaluatorContext context)
boolean	isConstantValue()

Methods inherited from interface com.espertech.esper.epl.expression.core.ExprNode

accept, accept, acceptChildnodes, addChildNode, addChildNodes, equalsNode, getChildNodes, getForge, getPrecedence, isConstantResult, replaceUnlistedChildNode, setChildNode, setChildNodes

Methods inherited from interface com.espertech.esper.epl.expression.core.ExprNodeRenderable

toEPL

Methods inherited from interface com.espertech.esper.epl.expression.core.ExprValidator

validate

Method Detail

getConstantType

java.lang.Class getConstantType()

getConstantValue

java.lang.Object getConstantValue(ExprEvaluatorContext context)

isConstantValue

boolean isConstantValue()