com.espertech.esper.epl.spec

Class PropertyEvalAtom

java.lang.Object

com.espertech.esper.epl.spec.PropertyEvalAtom

All Implemented Interfaces:

MetaDefItem, Serializable

public class PropertyEvalAtom
extends Object
implements MetaDefItem, Serializable

Atom in a specification for property evaluation.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
PropertyEvalAtom(ExprNode splitterExpression, String optionalResultEventType, String optionalAsName, SelectClauseSpecRaw optionalSelectClause, ExprNode optionalWhereClause) Ctor.

Method Summary

Modifier and Type	Method and Description
String	getOptionalAsName() Returns the column name if assigned.
String	getOptionalResultEventType()
SelectClauseSpecRaw	getOptionalSelectClause() Returns the select clause if specified.
ExprNode	getOptionalWhereClause() Returns the where clause, if specified.
ExprNode	getSplitterExpression()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

PropertyEvalAtom

public PropertyEvalAtom(ExprNode splitterExpression,
                        String optionalResultEventType,
                        String optionalAsName,
                        SelectClauseSpecRaw optionalSelectClause,
                        ExprNode optionalWhereClause)

Ctor.

Parameters:

optionalAsName - column name assigned, if any

optionalSelectClause - select clause, if any

optionalWhereClause - where clause, if any

splitterExpression - for nested events

optionalResultEventType - result event type if split

Method Detail

getOptionalAsName

public String getOptionalAsName()

Returns the column name if assigned.

Returns:

column name

getOptionalSelectClause

public SelectClauseSpecRaw getOptionalSelectClause()

Returns the select clause if specified.

Returns:

select clause

getOptionalWhereClause

public ExprNode getOptionalWhereClause()

Returns the where clause, if specified.

Returns:

filter expression

getSplitterExpression

public ExprNode getSplitterExpression()

getOptionalResultEventType

public String getOptionalResultEventType()