private async Task <TGGDBFContextType> GetContext(IGGDBFDataSource source)
{
if (source == null)
{
throw new ArgumentNullException(nameof(source));
}
//TODO: This could load the context multiple times due to race conditions (but should be ok)
if (!GGDBFHelpers.IsContextInitialized <TGGDBFContextType>())
{
await GGDBFHelpers.CallInitialize <TGGDBFContextType>(source);
}
return(GGDBFHelpers.GetInstance <TGGDBFContextType>());
}
/// <inheritdoc />
public async Task <GGDBFTable <TPrimaryKeyType, TModelType> > RetrieveFullTableAsync <TPrimaryKeyType, TModelType>(TableRetrievalConfig <TPrimaryKeyType, TModelType> config = null, CancellationToken token = default)
where TModelType : class
{
IEnumerable <TModelType> models = await RetrieveAllAsync <TModelType>(token);
if (config == null)
{
throw new NotSupportedException($"TODO: Cannot support no config.");
}
else if (config.KeyResolutionFunction == null)
{
//TODO: This only supports simple primary keys
var keyName = Context.Model
.FindEntityType(typeof(TModelType))
.FindPrimaryKey()
.Properties
.Select(x => x.Name)
.Single();
config = new TableRetrievalConfig <TPrimaryKeyType, TModelType>(m => (TPrimaryKeyType)m.GetPropertyValue(keyName), config.TableNameOverride);
}
var map = new Dictionary <TPrimaryKeyType, TModelType>();
var version = GGDBFHelpers.ConvertToVersion(typeof(GGDBFTable <TPrimaryKeyType, TModelType>).Assembly.GetName().Version);
string name = string.IsNullOrWhiteSpace(config.TableNameOverride) ? typeof(TModelType).GetCustomAttribute <TableAttribute>(true).Name : config.TableNameOverride;
foreach (var model in models)
{
map[config.KeyResolutionFunction(model)] = model;
}
return(new GGDBFTable <TPrimaryKeyType, TModelType>()
{
TableData = map,
Version = version,
TableName = name
});
}
/// <inheritdoc />
public async Task <GGDBFTable <TPrimaryKeyType, TModelType> > RetrieveFullTableAsync <TPrimaryKeyType, TModelType>(TableRetrievalConfig <TPrimaryKeyType, TModelType> config = null, CancellationToken token = default) where TModelType : class
{
TGGDBFContextType context = await GetContext(Source);
try
{
//Total hack but the best way to get the data I guess.
var modelDictionary = (IReadOnlyDictionary <TPrimaryKeyType, TModelType>) typeof(TGGDBFContextType)
.GetProperties(BindingFlags.Public | BindingFlags.Instance | BindingFlags.GetProperty)
.First(p => p.PropertyType == typeof(IReadOnlyDictionary <TPrimaryKeyType, TModelType>))
.GetValue(context);
return(new GGDBFTable <TPrimaryKeyType, TModelType>()
{
Version = GGDBFHelpers.GetContextVersion <TGGDBFContextType>(),
TableName = GGDBFHelpers.GetTableName <TModelType>(),
TableData = modelDictionary.ToDictionary(kvp => kvp.Key, kvp => kvp.Value)
});
}
catch (Exception e)
{
throw new InvalidOperationException($"Failed to {nameof(RetrieveFullTableAsync)} for Key: {typeof(TPrimaryKeyType)} Model: {typeof(TModelType)}", e);
}
}
public async Task ReloadAsync(CancellationToken token = default)
{
await Source.ReloadAsync(token);
await GGDBFHelpers.CallInitialize <TGGDBFContextType>(Source);
}
