Class QuadraticMeanExpression

java.lang.Object
net.sf.basedb.core.query.QuadraticMeanExpression
All Implemented Interfaces:
Expression, QueryElement

public class QuadraticMeanExpression extends Object implements Expression
Calculates the quadratic mean of an expression
Version:
2.8
Author:
Martin
See Also:
Last modified
$Date: 2007-08-17 09:18:29 +0200 (Fri, 17 Aug 2007) $
  • Field Details

  • Constructor Details

    • QuadraticMeanExpression

      QuadraticMeanExpression(Expression e)
  • Method Details

    • getChildren

      public Collection<? extends QueryElement> getChildren()
      Description copied from interface: QueryElement
      Get the children of this query element or null if it has no children. For example the AddExpression has two children, the expression beeing added.
      Specified by:
      getChildren in interface QueryElement
      Returns:
      A collection or null
    • toQl

      public String toQl(Query query, DbControl dc) throws BaseException
      Description copied from interface: QueryElement
      Create a query language string of the query element. Use the Query.getQueryType() method to find out which query language is wanted in case the element requires different syntax for different languages.
      Specified by:
      toQl in interface QueryElement
      Parameters:
      query - The query that is about to be executed
      dc - The DbControl object used to execute the query
      Throws:
      BaseException - If there is any other error
    • toString

      public String toString()
      Overrides:
      toString in class Object
    • equals

      public boolean equals(Object other)
      This expression is equal to another QuadraticMeanExpression if their child expressions are equal.
      Overrides:
      equals in class Object
    • hashCode

      public int hashCode()
      Overrides:
      hashCode in class Object
    • getSqrt

      private Expression getSqrt()