/// <summary>
/// Returns the PDFDataScema associated with this source.
/// </summary>
/// <param name="path"></param>
/// <param name="context"></param>
/// <returns>The data schema associated with the source</returns>
/// <exception cref="System.NotSupportedException" >Thrown if this data source does not support schema extraction</exception>
public override PDFDataSchema GetDataSchema(string path, PDFDataContext context)
{
System.Data.DataSet ds;
if (this.HasData(out ds))
{
PDFDataSchema schema = DataSetSchemaGenerator.CreateSchemaFromSet(ds, context);
if (!string.IsNullOrEmpty(path))
{
if (path == schema.RootPath)
{
return(schema);
}
else if (!path.StartsWith(schema.RootPath))
{
return(null);
}
else
{
foreach (var one in schema.Items)
{
if (one.FullPath == path)
{
PDFDataSchema child = new PDFDataSchema(one.FullPath, one.Children);
return(child);
}
}
return(null);
}
}
else
{
return(schema);
}
}
else
{
return(base.GetDataSchema(path, context));
}
}
//
// support methods
//
#region protected virtual PDFDataSchema DoPopulateDataSchema(DataSet dataset, PDFDataContext context)
protected virtual PDFDataSchema DoPopulateDataSchema(DataSet dataset, PDFDataContext context)
{
return(DataSetSchemaGenerator.CreateSchemaFromSet(dataset, context));
}