/// <summary>
/// Gets a string representation of the LINQ expression translated to a MongoDB query.
/// </summary>
/// <param name="expression">The LINQ expression.</param>
/// <returns>A string.</returns>
public string GetQueryText(
Expression expression
)
{
var translatedQuery = MongoLinqTranslator.Translate(collection, expression);
return(translatedQuery.ToString());
}
/// <summary>
/// Gets an enumerator by executing the query.
/// </summary>
/// <typeparam name="T">Type element type.</typeparam>
/// <param name="expression">The LINQ expression.</param>
/// <returns>An enumerator for the results of the query.</returns>
public IEnumerator <T> GetEnumerator <T>(Expression expression)
{
if (expression == null)
{
throw new ArgumentNullException("expression");
}
if (!typeof(IEnumerable <T>).IsAssignableFrom(expression.Type))
{
throw new ArgumentException("Argument expression is not valid.");
}
var translatedQuery = MongoLinqTranslator.Translate(collection, expression);
return(translatedQuery.GetEnumerator <T>());
}
/// <summary>
/// Executes a query.
/// </summary>
/// <typeparam name="TResult">The type of the result.</typeparam>
/// <param name="expression">The query expression.</param>
/// <returns>The result of the query.</returns>
public TResult Execute <TResult>(Expression expression)
{
if (expression == null)
{
throw new ArgumentNullException("expression");
}
if (!typeof(TResult).IsAssignableFrom(expression.Type))
{
throw new ArgumentException("Argument expression is not valid.");
}
var translatedQuery = MongoLinqTranslator.Translate(collection, expression);
return((TResult)translatedQuery.Execute());
}