internal override RenderedFieldDefinition <TField> TranslateExpressionToField <TDocument, TField>(
Expression <Func <TDocument, TField> > expression,
IBsonSerializer <TDocument> documentSerializer,
IBsonSerializerRegistry serializerRegistry,
bool allowScalarValueForArrayField)
{
var lambda = (LambdaExpression)PartialEvaluator.Evaluate(expression);
var bindingContext = new PipelineBindingContext(serializerRegistry);
var parameterExpression = new DocumentExpression(documentSerializer);
bindingContext.AddExpressionMapping(lambda.Parameters[0], parameterExpression);
var bound = bindingContext.Bind(lambda.Body);
bound = FieldExpressionFlattener.FlattenFields(bound);
IFieldExpression field;
if (!ExpressionHelper.TryGetExpression(bound, out field))
{
var message = string.Format("Unable to determine the serialization information for {0}.", expression);
throw new InvalidOperationException(message);
}
var underlyingSerializer = field.Serializer;
var fieldSerializer = underlyingSerializer as IBsonSerializer <TField>;
var valueSerializer = (IBsonSerializer <TField>)FieldValueSerializerHelper.GetSerializerForValueType(underlyingSerializer, serializerRegistry, typeof(TField), allowScalarValueForArrayField);
return(new RenderedFieldDefinition <TField>(field.FieldName, fieldSerializer, valueSerializer, underlyingSerializer));
}
internal override RenderedFieldDefinition TranslateExpressionToField <TDocument>(
LambdaExpression expression,
IBsonSerializer <TDocument> documentSerializer,
IBsonSerializerRegistry serializerRegistry)
{
var bindingContext = new PipelineBindingContext(serializerRegistry);
var lambda = ExpressionHelper.GetLambda(PartialEvaluator.Evaluate(expression));
var parameterExpression = new DocumentExpression(documentSerializer);
bindingContext.AddExpressionMapping(lambda.Parameters[0], parameterExpression);
var bound = bindingContext.Bind(lambda.Body);
bound = FieldExpressionFlattener.FlattenFields(bound);
IFieldExpression field;
if (!ExpressionHelper.TryGetExpression(bound, out field))
{
var message = string.Format("Unable to determine the serialization information for {0}.", expression);
throw new InvalidOperationException(message);
}
return(new RenderedFieldDefinition(field.FieldName, field.Serializer));
}
public static Expression FlattenFields(Expression node)
{
var visitor = new FieldExpressionFlattener();
return(visitor.Visit(node));
}
