private Expression BindClientSideProjector(MethodCallExpression node)
{
var arguments = new List <Expression>();
arguments.Add(Visit(node.Arguments[0]));
// we need to make sure that the serialization info for the parameter
// is the item serialization from the parent IBsonArraySerializer
var fieldExpression = arguments[0] as IFieldExpression;
if (fieldExpression != null)
{
var arraySerializer = fieldExpression.Serializer as IBsonArraySerializer;
BsonSerializationInfo itemSerializationInfo;
if (arraySerializer != null && arraySerializer.TryGetItemSerializationInfo(out itemSerializationInfo))
{
var lambda = ExpressionHelper.GetLambda(node.Arguments[1]);
_bindingContext.AddExpressionMapping(
lambda.Parameters[0],
new FieldExpression(
fieldExpression.FieldName,
itemSerializationInfo.Serializer,
lambda.Parameters[0]));
}
}
arguments.Add(Visit(node.Arguments[1]));
if (node.Arguments[0] != arguments[0] || node.Arguments[1] != arguments[1])
{
node = Expression.Call(node.Method, arguments.ToArray());
}
return(node);
}
public static WhereExpression BindWhere(PipelineExpression pipeline, IBindingContext bindingContext, LambdaExpression lambda)
{
bindingContext.AddExpressionMapping(lambda.Parameters[0], pipeline.Projector);
var predicate = bindingContext.Bind(lambda.Body);
return(new WhereExpression(
pipeline.Source,
lambda.Parameters[0].Name,
predicate));
}
public static WhereExpression BindWhere(PipelineExpression pipeline, IBindingContext bindingContext, LambdaExpression lambda)
{
bindingContext.AddExpressionMapping(lambda.Parameters[0], pipeline.Projector);
var predicate = bindingContext.Bind(lambda.Body);
return new WhereExpression(
pipeline.Source,
lambda.Parameters[0].Name,
predicate);
}
public static SelectExpression BindSelect(PipelineExpression pipeline, IBindingContext bindingContext, LambdaExpression lambda)
{
bindingContext.AddExpressionMapping(lambda.Parameters[0], pipeline.Projector);
var selector = bindingContext.Bind(lambda.Body);
return(new SelectExpression(
pipeline.Source,
lambda.Parameters[0].Name,
selector));
}
public static SelectExpression BindSelect(PipelineExpression pipeline, IBindingContext bindingContext, LambdaExpression lambda)
{
bindingContext.AddExpressionMapping(lambda.Parameters[0], pipeline.Projector);
var selector = bindingContext.Bind(lambda.Body);
return new SelectExpression(
pipeline.Source,
lambda.Parameters[0].Name,
selector);
}