|
||||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | |||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |
java.lang.Objectcom.espertech.esper.epl.expression.core.ExprNodeBase
com.espertech.esper.epl.expression.funcs.ExprTypeofNode
public class ExprTypeofNode
Represents the TYPEOF(a) function is an expression tree.
Nested Class Summary | |
---|---|
static class |
ExprTypeofNode.FragmentTypeEval
|
static class |
ExprTypeofNode.StreamEventTypeEval
|
Constructor Summary | |
---|---|
ExprTypeofNode()
Ctor. |
Method Summary | |
---|---|
boolean |
equalsNode(ExprNode node)
Return true if a expression node semantically equals the current node, or false if not. |
java.util.Map<java.lang.String,java.lang.Object> |
getEventType()
|
ExprEvaluator |
getExprEvaluator()
|
FilterSpecLookupable |
getFilterLookupable()
|
boolean |
getFilterLookupEligible()
|
ExprPrecedenceEnum |
getPrecedence()
Returns precedence. |
java.lang.Class |
getType()
|
boolean |
isConstantResult()
Returns true if the expression node's evaluation value doesn't depend on any events data, as must be determined at validation time, which is bottom-up and therefore reliably allows each node to determine constant value. |
void |
toPrecedenceFreeEPL(java.io.StringWriter writer)
|
ExprNode |
validate(ExprValidationContext validationContext)
|
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, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
---|
public ExprTypeofNode()
Method Detail |
---|
public ExprEvaluator getExprEvaluator()
getExprEvaluator
in interface ExprNode
public java.util.Map<java.lang.String,java.lang.Object> getEventType()
public ExprNode validate(ExprValidationContext validationContext) throws ExprValidationException
validate
in interface ExprValidator
ExprValidationException
public boolean isConstantResult()
ExprNode
isConstantResult
in interface ExprNode
public java.lang.Class getType()
public boolean getFilterLookupEligible()
getFilterLookupEligible
in interface ExprFilterOptimizableNode
public FilterSpecLookupable getFilterLookupable()
getFilterLookupable
in interface ExprFilterOptimizableNode
public void toPrecedenceFreeEPL(java.io.StringWriter writer)
toPrecedenceFreeEPL
in class ExprNodeBase
public ExprPrecedenceEnum getPrecedence()
ExprNode
getPrecedence
in interface ExprNode
public boolean equalsNode(ExprNode node)
ExprNode
Concrete implementations should compare the type and any additional information that impact the evaluation of a node.
equalsNode
in interface ExprNode
node
- to compare to
|
© 2006-2016 EsperTech Inc. All rights reserved. Visit us at espertech.com |
|||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | |||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |