/// <summary>
/// Translates the <paramref name="orderByExpression"/> into a string representation.
/// </summary>
/// <param name="orderByExpression">The <see cref="DbOrderByExpression"/> to translate.</param>
/// <returns><see cref="string"/></returns>
protected override DbExpression VisitOrderByExpression(DbOrderByExpression orderByExpression)
{
string body = orderByExpression.OrderByExpressionType == DbOrderByExpressionType.Ascending
? "{0} ASC"
: "{0} DESC";
string syntax = string.Format(body, Visit(orderByExpression.Expression));
return(ExpressionFactory.Sql(syntax));
}
/// <summary>
/// Translates the <paramref name="orderByExpression"/> into a string representation.
/// </summary>
/// <param name="orderByExpression">The <see cref="DbOrderByExpression"/> to translate.</param>
/// <returns><see cref="DbExpression"/></returns>
protected virtual DbExpression VisitOrderByExpression(DbOrderByExpression orderByExpression)
{
var expression = Visit(orderByExpression.Expression);
if (!ReferenceEquals(expression, orderByExpression.Expression))
{
return(ExpressionFactory.MakeOrderBy(orderByExpression.OrderByExpressionType, expression));
}
return(orderByExpression);
}
/// <summary>
/// Creates a new <see cref="DbOrderByExpression"/> that represents ordering the result set.
/// </summary>
/// <param name="orderByExpressionType">The <see cref="DbOrderByExpressionType"/> that specifies the ordering direction.</param>
/// <param name="expression">The <see cref="DbExpression"/> representing an element in the 'ORDER BY' clause.</param>
/// <returns>A <see cref="DbOrderByExpression"/> instance.</returns>
public DbOrderByExpression MakeOrderBy(DbOrderByExpressionType orderByExpressionType, DbExpression expression)
{
var dbOrderByExpression = new DbOrderByExpression
{ OrderByExpressionType = orderByExpressionType, Expression = expression };
return dbOrderByExpression;
}
/// <summary>
/// Translates the <paramref name="orderByExpression"/> into a string representation.
/// </summary>
/// <param name="orderByExpression">The <see cref="DbOrderByExpression"/> to translate.</param>
/// <returns><see cref="string"/></returns>
protected override DbExpression VisitOrderByExpression(DbOrderByExpression orderByExpression)
{
string body = orderByExpression.OrderByExpressionType == DbOrderByExpressionType.Ascending
? "{0} ASC"
: "{0} DESC";
string syntax = string.Format(body, Visit(orderByExpression.Expression));
return ExpressionFactory.Sql(syntax);
}
/// <summary>
/// Translates the <paramref name="orderByExpression"/> into a string representation.
/// </summary>
/// <param name="orderByExpression">The <see cref="DbOrderByExpression"/> to translate.</param>
/// <returns><see cref="DbExpression"/></returns>
protected virtual DbExpression VisitOrderByExpression(DbOrderByExpression orderByExpression)
{
var expression = Visit(orderByExpression.Expression);
if (!ReferenceEquals(expression,orderByExpression.Expression))
return ExpressionFactory.MakeOrderBy(orderByExpression.OrderByExpressionType, expression);
return orderByExpression;
}
