public static IReadOnlyLogbook Build <TModel>(IFieldCollection fields, IFieldValuePairs fieldValuePairs, IFieldPredicatePairs fieldPredicatePairs, out IEnumerable <QueryField> queryFields) where TModel : class, IModel, new()
{
queryFields = Enumerable.Empty <QueryField>();
ILogbook logs = Logger.NewLogbook();
if (!fields.IsSubsetOfModel <TModel>())
{
logs.Failure("Qualifier fields must be subset of model fields");
return(logs);
}
ICollection <QueryField> queryFieldCollection = new Collection <QueryField>();
foreach (Field field in fields)
{
bool valueFound = fieldValuePairs.TryGetValue(field, out object value);
bool predicateFound = fieldPredicatePairs.TryGetValue(field, out ReadOnlyLogbookPredicate <object> predicate);
if (valueFound && predicateFound && predicate != null)
{
logs.AddRange(predicate.Invoke(value));
}
if (!logs.Safely)
{
break;
}
}
return(logs);
}
public static bool Build <TModel>(this IFieldCollection fieldCollection, out IEnumerable <Field> fields) where TModel : class, IModel, new()
{
fields = Enumerable.Empty <Field>();
if (fieldCollection.HasField && fieldCollection.IsSubsetOfModel <TModel>())
{
fields = fieldCollection;
return(true);
}
return(false);
}
