/// <summary>
/// Loads the metadata (mappings, types, etc) for this DataModel.
/// </summary>
/// <param name="type"></param>
private void PreInitialize(Type type)
{
InnerData = new CaseInsensitiveDictionary <object>();
EntityMappings = GetMapping(type);
ColumnMappedValue = new ColumnMappedValueProperty(this, EntityMappings);
Convert = new DataModelConverter(this);
DataChanging += DataModel_DataChanging;
DataChanged += DataModel_DataChanged;
ModifiedProperties = new CaseInsensitiveStringList();
}
protected override DataModelValue ParseToDataModel(ref Exception?parseException)
{
try
{
return(DataModelConverter.FromJson(Value));
}
catch (JsonException ex)
{
parseException = ex;
return(Value.NormalizeSpaces());
}
}
private async Task RefreshDiagram()
{
try
{
var dataTypes = DataModelManager.GetDataTypes();
MermaidScript = DataModelConverter.ConvertToDiagramCode(dataTypes);
await JSRunTime.InvokeVoidAsync("mermaidLib.renderMermaidDiagram", "mermaid-canvas", MermaidScript);
}
catch (JSException)
{
Console.WriteLine("Could not render mermaid diagram");
}
catch (DataModelConversionException)
{
Console.WriteLine("Error when converting the model");
}
}
protected override async ValueTask <DataModelValue> ParseToDataModel(IExecutionContext executionContext, Resource resource, CancellationToken token)
{
var content = await resource.GetContent(token).ConfigureAwait(false);
if (content is null)
{
return(DataModelValue.Null);
}
try
{
return(DataModelConverter.FromJson(content));
}
catch (JsonException ex)
{
await executionContext.Log(LogLevel.Warning, exception : ex, token : token).ConfigureAwait(false);
return(content.NormalizeSpaces());
}
}
private IList <T> ToList <T>(DataTable table) where T : class
{
if (table == null)
{
throw new ArgumentNullException("table");
}
DataRowCollection rows = table.Rows;
if (rows.Count <= 0)
{
return(new List <T>(0));
}
if (typeof(T) == typeof(object))
{
DataModelProxyConverter proxy = DataModelProxyConverter.GetInstance();
return((IList <T>)proxy.ToList(table));
}
else
{
return(DataModelConverter.ToList <T>(table));
}
}
protected override Task SerializeToStreamAsync(Stream stream, TransportContext?context) => DataModelConverter.ToJsonAsync(stream, _value);
