com.espertech.esper.epl.expression.dot

Class ExprAppDotMethodImpl

java.lang.Object

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

com.espertech.esper.epl.expression.dot.ExprAppDotMethodImpl

All Implemented Interfaces:

ExprNode, ExprNodeRenderable, ExprValidator, FilterSpecCompilerAdvIndexDescProvider, FilterExprAnalyzerAffectorProvider, MetaDefItem, Serializable

public class ExprAppDotMethodImpl
extends ExprNodeBase
implements FilterSpecCompilerAdvIndexDescProvider, FilterExprAnalyzerAffectorProvider

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
ExprAppDotMethodImpl(EngineImportApplicationDotMethod desc)

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.
FilterExprAnalyzerAffector	getAffector(boolean isOuterJoin)
EngineImportApplicationDotMethod	getDesc()
Class	getEvaluationType()
ExprEvaluator	getExprEvaluator()
FilterSpecCompilerAdvIndexDesc	getFilterSpecDesc()
ExprForge	getForge()
ExprPrecedenceEnum	getPrecedence() Returns precedence.
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(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

ExprAppDotMethodImpl

public ExprAppDotMethodImpl(EngineImportApplicationDotMethod desc)

Method Detail

validate

public ExprNode validate(ExprValidationContext validationContext)
                  throws ExprValidationException

Specified by:

validate in interface ExprValidator

Throws:

ExprValidationException

getDesc

public EngineImportApplicationDotMethod getDesc()

getFilterSpecDesc

public FilterSpecCompilerAdvIndexDesc getFilterSpecDesc()

Specified by:

getFilterSpecDesc in interface FilterSpecCompilerAdvIndexDescProvider

getAffector

public FilterExprAnalyzerAffector getAffector(boolean isOuterJoin)

Specified by:

getAffector in interface FilterExprAnalyzerAffectorProvider

getForge

public ExprForge getForge()

Specified by:

getForge in interface ExprNode

getExprEvaluator

public ExprEvaluator getExprEvaluator()

getEvaluationType

public Class getEvaluationType()

getPrecedence

public ExprPrecedenceEnum getPrecedence()

Description copied from interface: ExprNode

Returns precedence.

Specified by:

getPrecedence in interface ExprNode

Returns:

precedence

toPrecedenceFreeEPL

public void toPrecedenceFreeEPL(StringWriter writer)

Specified by:

toPrecedenceFreeEPL in class ExprNodeBase

isConstantResult

public boolean isConstantResult()

Description copied from interface: ExprNode

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.

Specified by:

isConstantResult in interface ExprNode

Returns:

true for constant evaluation value, false for non-constant evaluation value

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