internal ExpressionAggregateExpressionDefinition(
Expression <Func <TSource, TResult> > expression,
ExpressionTranslationOptions translationOptions,
TranslationContextData contextData)
{
_expression = Ensure.IsNotNull(expression, nameof(expression));
_translationOptions = translationOptions; // can be null
_contextData = contextData; // can be null
}
internal override BsonValue TranslateExpressionToAggregateExpression <TSource, TResult>(
Expression <Func <TSource, TResult> > expression,
IBsonSerializer <TSource> sourceSerializer,
IBsonSerializerRegistry serializerRegistry,
ExpressionTranslationOptions translationOptions,
TranslationContextData contextData = null)
{
if (contextData != null)
{
throw new InvalidOperationException("The LINQ2 provider does not support context data.");
}
return(AggregateExpressionTranslator.Translate(expression, sourceSerializer, serializerRegistry, translationOptions));
}
internal override BsonValue TranslateExpressionToAggregateExpression <TSource, TResult>(
Expression <Func <TSource, TResult> > expression,
IBsonSerializer <TSource> sourceSerializer,
IBsonSerializerRegistry serializerRegistry,
ExpressionTranslationOptions translationOptions,
TranslationContextData contextData = null)
{
expression = (Expression <Func <TSource, TResult> >)PartialEvaluator.EvaluatePartially(expression);
var context = TranslationContext.Create(expression, sourceSerializer, contextData);
var translation = ExpressionToAggregationExpressionTranslator.TranslateLambdaBody(context, expression, sourceSerializer, asRoot: true);
var simplifiedAst = AstSimplifier.Simplify(translation.Ast);
return(simplifiedAst.Render());
}
internal abstract BsonValue TranslateExpressionToAggregateExpression <TSource, TResult>(
Expression <Func <TSource, TResult> > expression,
IBsonSerializer <TSource> sourceSerializer,
IBsonSerializerRegistry serializerRegistry,
ExpressionTranslationOptions translationOptions,
TranslationContextData contextData = null);
