Package net.sf.basedb.core

Class ExtraValueExpression

java.lang.Object
net.sf.basedb.core.ExtraValueExpression
All Implemented Interfaces:
Expression, QueryElement
public class ExtraValueExpression
extends Object
implements Expression
Represents the value of an extra value in a dynamic query: alias.value.
Version:
2.0
Author:
Nicklas
Last modified
$Date: 2005-11-03 16:09:12 +0100 (to, 03 nov 2005) $

  • Field Details

  • Constructor Details

    • ExtraValueExpression

      public ExtraValueExpression​(ExtraValue extraValue)
      Create a new expression for the specified extra value. It is assumed that the extra value has been joined before it is used in an expression.
      Parameters:
      extraValue - The extra value
      See Also:
      ExtraValueJoin, Dynamic.extraValue(ExtraValue)

  • Method Details

    • 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

    • 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:
      Always null

    • toString

      public String toString()
      Overrides:
      toString in class Object

    • equals

      public boolean equals​(Object other)
      This expression is equal to another ExtraValueExpression if they represents the same extra value.
      Overrides:
      equals in class Object

    • hashCode

      public int hashCode()
      Overrides:
      hashCode in class Object

    • getExtraValue

      public ExtraValue getExtraValue()