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Scala example source code file (Aggregate.scala)

This example Scala source code file (Aggregate.scala) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Scala tags/keywords

aggregate, expression, filter, filter, none, none, option, setfunction, some, string, string, where, where

The Scala Aggregate.scala source code

/*                     __                                               *\
**     ________ ___   / /  ___     Scala API                            **
**    / __/ __// _ | / /  / _ |    (c) 2003-2011, LAMP/EPFL             **
**  __\ \/ /__/ __ |/ /__/ __ |                                         **
** /____/\___/_/ |_/____/_/ | |                                         **
**                          |/                                          **
\*                                                                      */



package scala.dbc
package statement
package expression


@deprecated(DbcIsDeprecated, "2.9.0") abstract class Aggregate extends Expression {
  
  def aggregateName: String;
  
  def setFunction: SetFunction;
  
  def filterClause: Option[Expression];
  
  /** A SQL-99 compliant string representation of the relation sub-
   * statement. This only has a meaning inside another statement. */
  def sqlInnerString: String = (
    aggregateName +
    "(" + setFunction.sqlString + ")" +
    (filterClause match {
      case None => ""
      case Some(fc) => " FILTER (WHERE " + fc.sqlString + ")"
    })
  )
  
}

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