public override byte[] ConvertToXML(BpmnModel model, string encoding)
{
try
{
System.IO.MemoryStream outputStream = new System.IO.MemoryStream();
//XMLOutputFactory xof = XMLOutputFactory.newInstance();
//System.IO.StreamWriter @out = new System.IO.StreamWriter(outputStream, encoding);
XDocument doc = XDocument.Load(outputStream);
XElement writer = doc.Root; //xof.createXElement(@out);
XMLStreamWriter xtw = new IndentingXMLStreamWriter(writer);
DefinitionsRootExport.WriteRootElement(model, xtw, encoding);
CollaborationExport.WritePools(model, xtw);
DataStoreExport.WriteDataStores(model, xtw);
SignalAndMessageDefinitionExport.WriteSignalsAndMessages(model, xtw);
foreach (Process process in model.Processes)
{
if (process.FlowElements.Count == 0 && process.Lanes.Count == 0)
{
// empty process, ignore it
continue;
}
ProcessExport.WriteProcess(process, xtw);
foreach (FlowElement flowElement in process.FlowElements)
{
CreateXML(flowElement, model, xtw);
}
foreach (Artifact artifact in process.Artifacts)
{
CreateXML(artifact, model, xtw);
}
// end process element
xtw.WriteEndElement();
}
// refactor each subprocess into a separate Diagram
IList <BpmnModel> subModels = ParseSubModels(model);
foreach (BpmnModel tempModel in subModels)
{
if (tempModel.FlowLocationMap.Count > 0 || tempModel.LocationMap.Count > 0)
{
BPMNDIExport.WriteBPMNDI(tempModel, xtw);
}
}
// end definitions root element
xtw.WriteEndElement();
xtw.WriteEndDocument();
xtw.Flush();
outputStream.Seek(0, System.IO.SeekOrigin.Begin);
byte[] bytes = outputStream.ToArray();
// cleanup
outputStream.Close();
//XElementHelper.Close(xtw);
xtw.Close();
return(bytes);
}
catch (Exception e)
{
logger.LogError(e, "Error writing BPMN XML");
throw new XMLException("Error writing BPMN XML", e);
}
}
public virtual byte[] ConvertToXML(BpmnModel model, string encoding)
{
try
{
using (MemoryStream ms = new MemoryStream())
{
XmlWriterSettings settings = new XmlWriterSettings
{
//要求缩进
Indent = true,
//注意如果不设置encoding默认将输出utf-16
//注意这儿不能直接用Encoding.UTF8如果用Encoding.UTF8将在输出文本的最前面添加4个字节的非xml内容
Encoding = new UTF8Encoding(false),
//设置换行符
NewLineChars = Environment.NewLine,
NamespaceHandling = NamespaceHandling.OmitDuplicates,
OmitXmlDeclaration = true
};
using (XmlWriter xmlWriter = XmlWriter.Create(ms, settings))
{
XMLStreamWriter writer = new XMLStreamWriter(xmlWriter);
DefinitionsRootExport.WriteRootElement(model, writer, encoding);
CollaborationExport.WritePools(model, writer);
DataStoreExport.WriteDataStores(model, writer);
SignalAndMessageDefinitionExport.WriteSignalsAndMessages(model, writer);
foreach (Process process in model.Processes)
{
if (process.FlowElements?.Count == 0 && process.Lanes?.Count == 0)
{
// empty process, ignore it
continue;
}
ProcessExport.WriteProcess(process, writer);
foreach (FlowElement flowElement in process.FlowElements)
{
CreateXML(flowElement, model, writer);
}
foreach (Artifact artifact in process.Artifacts)
{
CreateXML(artifact, model, writer);
}
// end process element
writer.WriteEndElement();
}
try
{
BPMNDIExport.WriteBPMNDI(model, writer);
}
catch (Exception ex)
{
///TODO: 不支持仅模型没有坐标位置的流程图
}
writer.WriteEndElement();
}
return(ms.ToArray());
}
}
catch (Exception e)
{
log.LogError("Error writing BPMN XML", e);
throw new XMLException("Error writing BPMN XML", e);
}
}