com.espertech.esper.client.soda

Class PriorExpression

java.lang.Object

com.espertech.esper.client.soda.ExpressionBase

com.espertech.esper.client.soda.PriorExpression

All Implemented Interfaces:

Expression, Serializable

public class PriorExpression
extends ExpressionBase

Expression representing the prior function.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
PriorExpression() Ctor - for use to create an expression tree, without child expression.
PriorExpression(int index, String propertyName) Ctor.

Method Summary

Modifier and Type	Method and Description
ExpressionPrecedenceEnum	getPrecedence() Returns precedence.
void	toPrecedenceFreeEPL(StringWriter writer) Renders the expressions and all it's child expression, in full tree depth, as a string in language syntax.

Methods inherited from class com.espertech.esper.client.soda.ExpressionBase

addChild, getChildren, getTreeObjectName, renderAggregation, setChildren, setTreeObjectName, toEPL, toPrecedenceFreeEPL, toPrecedenceFreeEPL

Methods inherited from class java.lang.Object

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

Constructor Detail

PriorExpression

public PriorExpression()

Ctor - for use to create an expression tree, without child expression.

PriorExpression

public PriorExpression(int index,
                       String propertyName)

Ctor.

Parameters:

index - is the index of the prior event

propertyName - is the property to return

Method Detail

getPrecedence

public ExpressionPrecedenceEnum getPrecedence()

Description copied from interface: Expression

Returns precedence.

Returns:

precedence

toPrecedenceFreeEPL

public void toPrecedenceFreeEPL(StringWriter writer)

Description copied from class: ExpressionBase

Renders the expressions and all it's child expression, in full tree depth, as a string in language syntax.

Specified by:

toPrecedenceFreeEPL in class ExpressionBase

Parameters:

writer - is the output to use