net.esper.client.soda
Class PriorExpression

java.lang.Object
  extended by net.esper.client.soda.ExpressionBase
      extended by net.esper.client.soda.PriorExpression
All Implemented Interfaces:
Serializable, Expression

public class PriorExpression
extends ExpressionBase

Expression representing the prior function.

See Also:
Serialized Form

Constructor Summary
PriorExpression()
          Ctor - for use to create an expression tree, without child expression.
PriorExpression(int index, String propertyName)
          Ctor.
 
Method Summary
 void toEQL(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 net.esper.client.soda.ExpressionBase
addChild, getChildren
 
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

toEQL

public void toEQL(StringWriter writer)
Description copied from interface: Expression
Renders the expressions and all it's child expression, in full tree depth, as a string in language syntax.

Parameters:
writer - is the output to use