/// <summary>
/// 清理重复的Featuer----------多线程----与单线程效率差别很小，不推荐
/// </summary>
/// <param name="filePath"></param>
public static void cleanPdxM(string filePath)
{
OSGeo.OGR.Ogr.RegisterAll();
OSGeo.OGR.Driver dr = OSGeo.OGR.Ogr.GetDriverByName("ESRI shapefile");
OSGeo.OGR.DataSource ds = dr.Open(filePath, 1);
OSGeo.OGR.Layer layer = ds.GetLayerByIndex(0);
int featCount = layer.GetFeatureCount(0);
var sw = new System.Diagnostics.Stopwatch(); sw.Start();
for (int i = 0; i < featCount - 1; i++)
{
getDoubFeat(filePath, i, featCount);
}
while (tickTime != featCount - 1)
{
Thread.Sleep(2000);
Console.WriteLine(tickTime.ToString() + " /" + featCount.ToString() + "/ deletePoint " + ids.Count().ToString());
}
sw.Stop(); Console.WriteLine("多线程清理重复Featuer用时：" + sw.Elapsed.ToString());
for (int i = 0; i < ids.Count; i++)
{
layer.DeleteFeature(ids[i]);
}
string a = "REPACK " + layer.GetName();
ds.ExecuteSQL(a, null, "");
ds.Dispose();
}
/****************************** Delete Feature Update ********************************************/
public static void deleteFeatUpdate(this OSGeo.OGR.DataSource myDS)
{
string a = "REPACK " + myDS.GetLayerByIndex(0).GetName();
myDS.ExecuteSQL(a, null, "");
myDS.Dispose();
}
public FeatureDataSet ExecuteQuery(string query, Geometry filter)
{
try
{
FeatureDataSet ds = new FeatureDataSet();
FeatureDataTable myDt = new FeatureDataTable();
Layer results = _OgrDataSource.ExecuteSQL(query, filter, "");
//reads the column definition of the layer/feature
ReadColumnDefinition(myDt, results);
OSGeo.OGR.Feature _OgrFeature;
results.ResetReading();
while ((_OgrFeature = results.GetNextFeature()) != null)
{
FeatureDataRow _dr = myDt.NewRow();
for (int iField = 0; iField < _OgrFeature.GetFieldCount(); iField++)
{
if (myDt.Columns[iField].DataType == System.Type.GetType("System.String"))
{
_dr[iField] = _OgrFeature.GetFieldAsString(iField);
}
else if (myDt.Columns[iField].GetType() == System.Type.GetType("System.Int32"))
{
_dr[iField] = _OgrFeature.GetFieldAsInteger(iField);
}
else if (myDt.Columns[iField].GetType() == System.Type.GetType("System.Double"))
{
_dr[iField] = _OgrFeature.GetFieldAsDouble(iField);
}
else
{
_dr[iField] = _OgrFeature.GetFieldAsString(iField);
}
}
_dr.Geometry = this.ParseOgrGeometry(_OgrFeature.GetGeometryRef());
myDt.AddRow(_dr);
}
ds.Tables.Add(myDt);
_OgrDataSource.ReleaseResultSet(results);
return(ds);
}
catch (Exception exc)
{
System.Diagnostics.Debug.WriteLine(exc.ToString());
return(new FeatureDataSet());
}
}
