net.esper.client.soda
Class MaxRowExpression

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

public class MaxRowExpression
extends ExpressionBase

Maximum-value per-row expression (not aggregating) determines the maximum value among a set of values.

See Also:
Serialized Form

Constructor Summary
MaxRowExpression()
          Ctor - for use to create an expression tree, without child expression.
MaxRowExpression(Expression exprOne, Expression exprTwo, Expression... moreExpressions)
          Ctor.
MaxRowExpression(String propertyOne, String propertyTwo, String[] moreProperties)
          Ctor.
 
Method Summary
 MaxRowExpression add(Expression expression)
          Add an expression to include in the computation.
 MaxRowExpression add(Object object)
          Add a constant to include in the computation.
 MaxRowExpression add(String propertyName)
          Add a property to include in the computation.
 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

MaxRowExpression

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

Use add methods to add child expressions to acts upon.


MaxRowExpression

public MaxRowExpression(String propertyOne,
                        String propertyTwo,
                        String[] moreProperties)
Ctor.

Parameters:
propertyOne - the name of the property providing a value to determine the maximum of
propertyTwo - the name of the property providing a value to determine the maximum of
moreProperties - optional additional properties to consider

MaxRowExpression

public MaxRowExpression(Expression exprOne,
                        Expression exprTwo,
                        Expression... moreExpressions)
Ctor.

Parameters:
exprOne - provides a value to determine the maximum of
exprTwo - provides a value to determine the maximum of
moreExpressions - optional additional values to consider
Method Detail

add

public MaxRowExpression add(Object object)
Add a constant to include in the computation.

Parameters:
object - constant to add
Returns:
expression

add

public MaxRowExpression add(Expression expression)
Add an expression to include in the computation.

Parameters:
expression - to add
Returns:
expression

add

public MaxRowExpression add(String propertyName)
Add a property to include in the computation.

Parameters:
propertyName - is the name of the property
Returns:
expression

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