/// <summary>
/// Generates a diffgram object graph corresponding
/// to the provided business object graph.
/// </summary>
/// <param name="root">Root of the business object graph
/// to be exported into the diffgram.</param>
/// <returns>
/// A DataItem representing the root of the diffgram object graph.
/// </returns>
public DataItem GenerateGraph(IExportData root)
{
if (root != null && root.IsParticipating)
{
_lastKey++;
root.Key = _lastKey;
DataItem result = new DataItem { Key = root.Key };
var track = root as Csla.Core.ITrackStatus;
if (track != null)
{
result.IsNew = track.IsNew;
result.IsDeleted = track.IsDeleted;
}
root.ExportTo(result);
foreach (var item in root.GetChildren())
{
var ci = GenerateGraph(item);
if (ci != null)
result.Children.Add(ci);
}
return result;
}
else
return null;
}
/// <summary>
/// Generates a diffgram object graph corresponding
/// to the provided business object graph.
/// </summary>
/// <param name="root">Root of the business object graph
/// to be exported into the diffgram.</param>
/// <returns>
/// A DataItem representing the root of the diffgram object graph.
/// </returns>
public DataItem GenerateGraph(IExportData root)
{
if (root != null && root.IsParticipating)
{
_lastKey++;
root.Key = _lastKey;
DataItem result = new DataItem {
Key = root.Key
};
var track = root as Csla.Core.ITrackStatus;
if (track != null)
{
result.IsNew = track.IsNew;
result.IsDeleted = track.IsDeleted;
}
root.ExportTo(result);
foreach (var item in root.GetChildren())
{
var ci = GenerateGraph(item);
if (ci != null)
{
result.Children.Add(ci);
}
}
return(result);
}
else
{
return(null);
}
}
/// <summary>
/// Integrates a diffgram object graph into an
/// existing business object graph.
/// </summary>
/// <param name="root">Root of the business object graph.</param>
/// <param name="dtoGraph">Root of the diffgram object
/// graph containing the data used to update the business
/// object graph.</param>
public void IntegrateGraph(IExportData root, DataItem dtoGraph)
{
if (root != null && root.IsParticipating)
{
if (root.Key == dtoGraph.Key)
{
foreach (var child in root.GetChildren().Where(c => c.IsParticipating))
{
var dto = (from d in dtoGraph.Children
where d.Key == child.Key
select d).SingleOrDefault();
if (dto != null)
{
IntegrateGraph(child, dto);
}
else
{
throw new Exception("Child key not in DTO graph");
}
}
root.ImportFrom(dtoGraph);
}
else
{
throw new Exception("Root object keys don't match");
}
}
}
/// <summary>
/// Integrates a diffgram object graph into an
/// existing business object graph.
/// </summary>
/// <param name="root">Root of the business object graph.</param>
/// <param name="dtoGraph">Root of the diffgram object
/// graph containing the data used to update the business
/// object graph.</param>
public void IntegrateGraph(IExportData root, DataItem dtoGraph)
{
if (root != null && root.IsParticipating)
{
if (root.Key == dtoGraph.Key)
{
foreach (var child in root.GetChildren().Where(c => c.IsParticipating))
{
var dto = (from d in dtoGraph.Children
where d.Key == child.Key
select d).SingleOrDefault();
if (dto != null)
IntegrateGraph(child, dto);
else
throw new Exception("Child key not in DTO graph");
}
root.ImportFrom(dtoGraph);
}
else
throw new Exception("Root object keys don't match");
}
}
public override void ExportContent(out IExportData data)
{
data = new ExportNodes(nodes);
}
public FileController(IExportData exportToFile)
{
_exportData = exportToFile;
}
private void ExportEmployees(IExportData export)
{
export.Export();
}
public virtual void ExportContent(out IExportData data)
{
data = null;
}
public override void ExportContent(out IExportData data)
{
throw new NotImplementedException();
}
public async Task <bool> HandleSuccessfulReqeustAsync(HttpContext context, object body, IExportData exportData)
{
var contentType = "";
var fileStr = !exportData.FileName.IsNullOrWhiteSpace() ? exportData.FileName + "_" : "";
string filename = fileStr + DateTime.Now.ToString("yyyyMMddHHmmss");
byte[] result = null;
switch (context.Request.Headers["exportType"])
{
case ExportType.Excel:
filename += ".xlsx";
var dt = ToDataTable(body?.ToString());
contentType = HttpContentMediaType.XLSXHttpContentMediaType;
var exporter = new ExcelExporter();
result = await exporter.ExportAsByteArray(dt, exportData.Type);
break;
case ExportType.PDF:
filename += ".pdf";
contentType = HttpContentMediaType.PDFHttpContentMediaType;
IExportFileByTemplate pdfexporter = new PdfExporter();
var tpl = File.ReadAllText(exportData.TemplatePath);
var obj = JsonConvert.DeserializeObject(body.ToString(), exportData.Type);
result = await pdfexporter.ExportBytesByTemplate(obj, tpl, exportData.Type);
break;
case ExportType.Word:
filename += ".docx";
contentType = HttpContentMediaType.DOCXHttpContentMediaType;
IExportFileByTemplate docxexporter = new WordExporter();
result = await docxexporter.ExportBytesByTemplate(JsonConvert.DeserializeObject(body.ToString(), exportData.Type), File.ReadAllText(exportData.TemplatePath), exportData.Type);
break;
}
if (contentType != "")
{
//必须清空原有响应返回内容，否则会抛异常 System.InvalidOperationException: Response Content-Length mismatch: too few bytes written
context.Response.Clear();
context.Response.Headers.Add("Content-Disposition", $"attachment;filename={HttpUtility.UrlEncode(filename)}");
context.Response.ContentType = contentType;
if (result != null)
{
await context.Response.Body.WriteAsync(result, 0, result.Length);
}
}
else
{
return(false);
}
return(true);
}
public CustomerController(ICustomerSearch customerSearch,IExportData exportData)
{
_customerSearch = customerSearch;
_exportData = exportData;
}
