Style Intelligence v12.0

inetsoft.uql.path.expr
Class ListFuncExpr

java.lang.Object
  extended by inetsoft.uql.path.ConditionExpression
      extended by inetsoft.uql.path.expr.Expr
          extended by inetsoft.uql.path.expr.ListFuncExpr
All Implemented Interfaces:
Serializable

public class ListFuncExpr
extends Expr

Calculate the aggregate of a list of values.

See Also:
Serialized Form

Field Summary
 
Fields inherited from class inetsoft.uql.path.ConditionExpression
ALL, ANY, SOME
 
Constructor Summary
ListFuncExpr(String op, Expr var)
          Create an aggregate function.
 
Method Summary
 Object execute(XNode tree, VariableTable vars)
          Execute the expression on a data tree.
 Expr getExpression()
          Get the value expression.
 Expr[] getExpressions()
          Get the expressions used in this expr.
 String getFunction()
          Get the aggregate function name.
 String[] getVariables()
          Get all variables used in the condition.
 String toString()
           
 
Methods inherited from class inetsoft.uql.path.expr.Expr
aggregate, append, booleanValue, compare, compare, doubleValue, getScalar, getScalarString, toArray, toString, toStringNot, toVector
 
Methods inherited from class inetsoft.uql.path.ConditionExpression
parse
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Constructor Detail

ListFuncExpr

public ListFuncExpr(String op,
                    Expr var)
Create an aggregate function.

Parameters:
op - aggregate function. One of sum, count, distinct_count, avg, min, and max.
Method Detail

getExpression

public Expr getExpression()
Get the value expression.


getFunction

public String getFunction()
Get the aggregate function name.


getVariables

public String[] getVariables()
Get all variables used in the condition.

Overrides:
getVariables in class Expr

execute

public Object execute(XNode tree,
                      VariableTable vars)
               throws Exception
Execute the expression on a data tree.

Specified by:
execute in class ConditionExpression
Parameters:
tree - data tree.
vars - variable table.
Throws:
Exception

getExpressions

public Expr[] getExpressions()
Get the expressions used in this expr. This is used for traversal down the expr tree.

Specified by:
getExpressions in class Expr

toString

public String toString()
Overrides:
toString in class Object

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