/// <summary>
/// Translate a MongoDB LINQ query.
/// </summary>
/// <param name="provider">The MongoDB query provider.</param>
/// <param name="expression">The LINQ query expression.</param>
/// <returns>A TranslatedQuery.</returns>
public static TranslatedQuery Translate(MongoQueryProvider provider, Expression expression)
{
expression = PartialEvaluator.Evaluate(expression, provider);
expression = ExpressionNormalizer.Normalize(expression);
// assume for now it's a SelectQuery
var documentType = GetDocumentType(expression);
var selectQuery = new SelectQuery(provider.Collection, documentType);
selectQuery.Translate(expression);
return(selectQuery);
}
// public methods
/// <summary>
/// Normalizes C# and VB expression trees.
/// </summary>
/// <param name="node">The expression to normalize.</param>
/// <returns>The normalized expression.</returns>
public static Expression Normalize(Expression node)
{
var normalizer = new ExpressionNormalizer(node);
return normalizer.Visit(node);
}
// public methods
/// <summary>
/// Normalizes C# and VB expression trees.
/// </summary>
/// <param name="node">The expression to normalize.</param>
/// <returns>The normalized expression.</returns>
public static Expression Normalize(Expression node)
{
var normalizer = new ExpressionNormalizer(node);
return(normalizer.Visit(node));
}