Package com.espertech.esper.common.internal.epl.expression.funcs

Class ExprInstanceofNode

java.lang.Object

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

com.espertech.esper.common.internal.epl.expression.funcs.ExprInstanceofNode

All Implemented Interfaces:

ExprNode, ExprNodeRenderable, ExprValidator

public class ExprInstanceofNode
extends ExprNodeBase

Represents the INSTANCEOF(a,b,...) function is an expression tree.

Constructor Summary

Constructors

Constructor	Description
ExprInstanceofNode(String[] classIdentifiers)	Ctor.

Method Summary

Modifier and Type	Method	Description
boolean	equalsNode(ExprNode node, boolean ignoreStreamPrefix)	Return true if a expression node semantically equals the current node, or false if not.
String[]	getClassIdentifiers()	Returns the list of class names or types to check instance of.
ExprEvaluator	getExprEvaluator()
ExprForge	getForge()
ExprPrecedenceEnum	getPrecedence()	Returns precedence.
boolean	isConstantResult()
void	toPrecedenceFreeEPL(StringWriter writer, ExprNodeRenderableFlags flags)
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 Details

ExprInstanceofNode

public ExprInstanceofNode(String[] classIdentifiers)

Ctor.

Parameters:

classIdentifiers - is a list of type names to check type for

Method Details

getExprEvaluator

public ExprEvaluator getExprEvaluator()

getForge

public ExprForge getForge()

validate

public ExprNode validate(ExprValidationContext validationContext)
                  throws ExprValidationException

Throws:

ExprValidationException

isConstantResult

public boolean isConstantResult()

toPrecedenceFreeEPL

public void toPrecedenceFreeEPL(StringWriter writer,
 ExprNodeRenderableFlags flags)

Specified by:

toPrecedenceFreeEPL in class ExprNodeBase

getPrecedence

public ExprPrecedenceEnum getPrecedence()

Description copied from interface: ExprNode

Returns precedence.

Returns:

precedence

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.

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

getClassIdentifiers

public String[] getClassIdentifiers()

Returns the list of class names or types to check instance of.

Returns:

class names