public virtual TSqlFormatter GetNewSqlFormatter <TSqlFormatter>()
where TSqlFormatter : ISqlFormatter, new()
{
TSqlFormatter ret = new TSqlFormatter();
return(ret);
}
protected override Expression Visit(Expression exp)
{
if (exp == null)
{
return(null);
}
switch ((DbExpressionType)exp.NodeType)
{
case DbExpressionType.Projection:
return(this.VisitProjection((ProjectionExpression)exp));
case DbExpressionType.ClientJoin:
return(this.VisitClientJoin((ClientJoinExpression)exp));
case DbExpressionType.Select:
return(this.VisitSelect((SelectExpression)exp));
case DbExpressionType.OuterJoined:
return(this.VisitOuterJoined((OuterJoinedExpression)exp));
case DbExpressionType.Column:
return(this.VisitColumn((ColumnExpression)exp));
default:
if (exp is DbExpression)
{
this.Write(TSqlFormatter.Format(exp));
return(exp);
}
else
{
return(base.Visit(exp));
}
}
}
/// <summary>
/// Converts the query expression into text of this query language
/// </summary>
/// <param name="expression"></param>
/// <returns></returns>
public virtual string Format(Expression expression)
{
// use SqlServer formatter by default
return(TSqlFormatter.Format(expression));
}
public override string Format(Expression expression)
{
return(TSqlFormatter.Format(expression));
}
public override string Format(Expression expression)
{
return(TSqlFormatter.Format(expression, this.Language));
}
