Class SelectedExpression

  • All Implemented Interfaces:
    Expression, QueryElement

    public class SelectedExpression
    extends Object
    implements Expression
    An expression representing an already selected expression. If the select object has an alias, the alias is used otherwise the expression is regenerated.
    Version:
    2.0
    Author:
    Nicklas
    See Also:
    Expressions.selected(Select)
    Last modified
    $Date: 2012-09-14 09:28:35 +0200 (fr, 14 sep 2012) $
    • Field Detail

      • select

        private final Select select
    • Constructor Detail

      • SelectedExpression

        SelectedExpression​(Select select)
    • Method Detail

      • 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:
        The selected expression
      • equals

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

        public int hashCode()
        Overrides:
        hashCode in class Object