public static IUniversalVectorDataReader GetUniversalDataReader(string filename, params object[] args)
{
if (DataReaderRegister == null || DataReaderRegister.Length == 0)
{
Log.WriterError("AgileMap", "GetUniversalDataReader(...)", "没有已经注册的数据读取器！");
return(null);
}
if (!File.Exists(filename))
{
Log.WriterWarning("AgileMap", "GetUniversalDataReader(...)", "输入的参数文件名为空！");
return(null);
}
byte[] bs = null;
try
{
using (FileStream fs = new FileStream(filename, FileMode.Open, FileAccess.Read))
{
using (BinaryReader sr = new BinaryReader(fs))
{
long len = 1024;
if (fs.Length < 1024)
{
len = fs.Length;
}
bs = sr.ReadBytes((int)len);
}
}
}
catch (Exception ex)
{
Log.WriterWarning("AgileMap.DataReaderFactory", "GetUniversalDataReader(...)", ex.Message);
return(null);
}
//
foreach (Type readerType in DataReaderRegister)
{
try
{
IUniversalVectorDataReader rd = GetDataReader(readerType);
if (rd == null)
{
continue;
}
if (rd.TryOpen(filename, bs))
{
return(rd);
}
}
catch (Exception Ex)
{
Log.WriterException("AgileMap.DataReaderFactory", "GetUniversalDataReader(...)", Ex);
continue;
}
}
return(null);
}
public override void BeginRead()
{
try
{
IUniversalVectorDataReader udr = VectorDataReaderFactory.GetUniversalDataReader(_fileUrl);
_reader = udr as IVectorFeatureDataReader;
_reader.SetArgsOfLeveling(_argOfLeveling);
_readIsFinished = false;
}
finally
{
if (GlobalCacher.VectorDataGlobalCacher != null &&
GlobalCacher.VectorDataGlobalCacher.IsEnabled &&
GlobalCacher.VectorDataGlobalCacher.IsGllPrjOfActiveViewer)
{
GlobalCacher.VectorDataGlobalCacher.Request(_fileUrl);
}
}
}
protected override bool Execute(IContextMessage contextMessage)
{
try
{
IUniversalVectorDataReader urd = VectorDataReaderFactory.GetUniversalDataReader(_filename);
if (urd == null)
{
contextMessage.AddError("读取矢量文件\"" + _filename + "\"失败。");
return(false);
}
Feature[] fets = (urd as IVectorFeatureDataReader).Features;
using (IDataImporter imp = new DataImporter())
{
imp.Import(fets, _featureClassDef, _dbConnection, _tracker);
}
return(true);
}
catch (Exception ex)
{
contextMessage.AddError(ex.Message);
return(false);
}
}
private bool ResFieldIsOK(out IVectorFeatureDataReader vdr)
{
vdr = null;
IUniversalVectorDataReader udr = VectorDataReaderFactory.GetUniversalDataReader(_shapefile);
if (udr == null)
{
return(false);
}
vdr = udr as IVectorFeatureDataReader;
string[] fields = vdr.Fields;
if (fields == null || fields.Length == 0)
{
return(false);
}
for (int i = 0; i < fields.Length; i++)
{
fields[i] = fields[i].ToUpper();
}
foreach (FieldMap map in _fieldMaps)
{
if (map.ResField.FieldName.ToUpper() == "SHAPE.X")
{
continue;
}
if (map.ResField.FieldName.ToUpper() == "SHAPE.Y")
{
continue;
}
if (Array.IndexOf(fields, map.ResField.FieldName.ToUpper()) < 0)
{
return(false);
}
}
return(true);
}
