public class ExprConstantNodeImpl extends ExprNodeBase implements ExprConstantNode, ExprEvaluator, ExprForgeInstrumentable
| Constructor and Description |
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ExprConstantNodeImpl(Class clazz)
Ctor - for use when the constant should return a given type and the actual value is always null.
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ExprConstantNodeImpl(EnumValue enumValue) |
ExprConstantNodeImpl(Object value)
Ctor.
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ExprConstantNodeImpl(Object value,
Class valueType)
Ctor.
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accept, accept, acceptChildnodes, addChildNode, addChildNodes, addChildNodeToFront, checkValidated, checkValidatedException, getChildNodes, replaceUnlistedChildNode, setChildNode, setChildNodes, toEPLclone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, waitaccept, accept, acceptChildnodes, addChildNode, addChildNodes, getChildNodes, replaceUnlistedChildNode, setChildNode, setChildNodestoEPLpublic ExprConstantNodeImpl(Object value)
value - is the constant's value.public ExprConstantNodeImpl(EnumValue enumValue)
public ExprConstantNodeImpl(Object value, Class valueType)
value - is the constant's value.valueType - is the constant's value type.public ExprConstantNodeImpl(Class clazz)
clazz - the type of the constant null.public ExprForgeConstantType getForgeConstantType()
getForgeConstantType in interface ExprForgepublic ExprEvaluator getExprEvaluator()
getExprEvaluator in interface ExprForgepublic Class getEvaluationType()
getEvaluationType in interface ExprForgepublic ExprNodeRenderable getForgeRenderable()
getForgeRenderable in interface ExprForgepublic CodegenExpression evaluateCodegen(Class requiredType, CodegenMethodScope codegenMethodScope, ExprForgeCodegenSymbol exprSymbol, CodegenClassScope codegenClassScope)
evaluateCodegen in interface ExprForgepublic CodegenExpression evaluateCodegenUninstrumented(Class requiredType, CodegenMethodScope codegenMethodScope, ExprForgeCodegenSymbol exprSymbol, CodegenClassScope codegenClassScope)
evaluateCodegenUninstrumented in interface ExprForgeInstrumentablepublic ExprNode validate(ExprValidationContext validationContext) throws ExprValidationException
validate in interface ExprValidatorExprValidationExceptionpublic boolean isConstantResult()
public Object getConstantValue()
getConstantValue in interface ExprConstantNodepublic void setValue(Object value)
value - to setpublic Class getConstantType()
getConstantType in interface ExprConstantNodepublic Object evaluate(EventBean[] eventsPerStream, boolean isNewData, ExprEvaluatorContext exprEvaluatorContext)
ExprEvaluatorevaluate in interface ExprEvaluatoreventsPerStream - - event tupleisNewData - - indicates whether we are dealing with new data (istream) or old data (rstream)exprEvaluatorContext - context for expression evaluationpublic void toPrecedenceFreeEPL(StringWriter writer)
toPrecedenceFreeEPL in class ExprNodeBasepublic ExprPrecedenceEnum getPrecedence()
ExprNodegetPrecedence in interface ExprNodepublic boolean equalsNode(ExprNode node, boolean ignoreStreamPrefix)
ExprNodeConcrete implementations should compare the type and any additional information that impact the evaluation of a node.
equalsNode in interface ExprNodenode - to compare toignoreStreamPrefix - when the equals-comparison can ignore prefix of event propertiesCopyright © 2005–2018. All rights reserved.