net.esper.client.soda
Class PropertyExistsExpression

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

public class PropertyExistsExpression
extends ExpressionBase

Property-exists checks if a dynamic property exists.

See Also:
Serialized Form

Constructor Summary
PropertyExistsExpression()
          Ctor - for use to create an expression tree, without child expression.
PropertyExistsExpression(String propertyName)
          Ctor.
 
Method Summary
 void toEQL(StringWriter writer)
          Renders the clause in textual representation.
 
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

PropertyExistsExpression

public PropertyExistsExpression()
Ctor - for use to create an expression tree, without child expression.


PropertyExistsExpression

public PropertyExistsExpression(String propertyName)
Ctor.

Parameters:
propertyName - is the name of the property to check existence
Method Detail

toEQL

public void toEQL(StringWriter writer)
Renders the clause in textual representation.

Parameters:
writer - to output to

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