/// <summary>
/// Opens the datasource
/// </summary>
public virtual void Open(string path)
{
// Get a Connector. The connector returned is guaranteed to be connected and ready to go.
// Pooling.Connector connector = Pooling.ConnectorPool.ConnectorPoolManager.RequestConnector(this,true);
if (!File.Exists(path))
{
log.Error("Could not find " + path);
return;
}
if (!_IsOpen || this.path != path)
{
try
{
this.path = path;
tree = null;
//Initialize DBF
string dbffile = GetDbaseFilePath();
if (File.Exists(dbffile))
{
dbaseFile = new DbaseReader(dbffile);
}
//Parse shape header
ParseHeader();
//Read projection file
ParseProjection();
fsShapeIndex = new FileStream(GetIndexFilePath(), FileMode.Open,
FileAccess.Read);
brShapeIndex = new BinaryReader(fsShapeIndex, Encoding.Unicode);
fsShapeFile = new FileStream(this.path, FileMode.Open, FileAccess.Read);
brShapeFile = new BinaryReader(fsShapeFile);
InitializeShape(this.path, _FileBasedIndex);
if (dbaseFile != null)
{
dbaseFile.Open();
}
_IsOpen = true;
}
catch (IOException e)
{
log.Error(e.Message);
_IsOpen = false;
}
}
}
/// <summary>
/// Initializes a ShapeFile DataProvider.
/// </summary>
/// <remarks>
/// <para>If FileBasedIndex is true, the spatial index will be read from a local copy. If it doesn't exist,
/// it will be generated and saved to [filename] + '.sidx'.</para>
/// <para>Using a file-based index is especially recommended for ASP.NET applications which will speed up
/// start-up time when the cache has been emptied.
/// </para>
/// </remarks>
/// <param name="filename">Path to shape file</param>
/// <param name="fileBasedIndex">Use file-based spatial index</param>
public ShapeFile(string filename, bool fileBasedIndex)
{
_Filename = filename;
_FileBasedIndex = fileBasedIndex;
//Initialize DBF
string dbffile = _Filename.Substring(0, _Filename.LastIndexOf(".")) + ".dbf";
if (File.Exists(dbffile))
{
dbaseFile = new DbaseReader(dbffile);
}
//Parse shape header
ParseHeader();
//Read projection file
ParseProjection();
}
/// <summary>
/// Initializes a ShapeFile DataProvider.
/// </summary>
/// <remarks>
/// <para>If FileBasedIndex is true, the spatial index will be read from a local copy. If it doesn't exist,
/// it will be generated and saved to [filename] + '.sidx'.</para>
/// <para>Using a file-based index is especially recommended for ASP.NET applications which will speed up
/// start-up time when the cache has been emptied.
/// </para>
/// </remarks>
/// <param name="filename">Path to shape file</param>
/// <param name="fileBasedIndex">Use file-based spatial index</param>
public ShapeFile(string filename, bool fileBasedIndex)
{
_Filename = filename;
_FileBasedIndex = (fileBasedIndex) && File.Exists(Path.ChangeExtension(filename, ".shx"));
//Initialize DBF
//string dbffile = _Filename.Substring(0, _Filename.LastIndexOf(".")) + ".dbf";
string dbffile = Path.ChangeExtension(filename, ".dbf");
if (File.Exists(dbffile))
{
dbaseFile = new DbaseReader(dbffile);
}
//Parse shape header
ParseHeader();
//Read projection file
ParseProjection();
}
/// <summary>
/// Opens the datasource
/// </summary>
public virtual void Open(string path)
{
// Get a Connector. The connector returned is guaranteed to be connected and ready to go.
// Pooling.Connector connector = Pooling.ConnectorPool.ConnectorPoolManager.RequestConnector(this,true);
logNoShapeFile = true;
if (!_IsOpen || this.path != path)
{
if (!File.Exists(path))
{
if (logNoShapeFile)
{
log.Error("Could not find " + path);
logNoShapeFile = false;
}
return;
}
try
{
unsafe
{
this.path = path;
//tree = null;
//Initialize DBF
string dbffile = GetDbaseFilePath();
if (File.Exists(dbffile))
{
dbaseFile = new DbaseReader(dbffile);
}
//Parse shape header
ParseHeader();
//Read projection file
ParseProjection();
fsShapeIndex = new FileStream(GetIndexFilePath(), FileMode.Open, FileAccess.Read);
brShapeIndex = new BinaryReader(fsShapeIndex, Encoding.Unicode);
fsShapeFile = new FileStream(this.path, FileMode.Open, FileAccess.Read);
brShapeFile = new BinaryReader(fsShapeFile);
shpFileMemoryMap = NativeMethods.MapFile(fsShapeFile);
shpFileMemoryMapView = NativeMethods.MapViewOfFile(shpFileMemoryMap,
NativeMethods.FileMapAccess.FILE_MAP_READ, 0,
0, 0);
zeroPtr = (byte *)shpFileMemoryMapView.ToPointer();
InitializeShape(this.path, _FileBasedIndex);
if (dbaseFile != null)
{
dbaseFile.Open();
}
_IsOpen = true;
}
}
catch (IOException e)
{
log.Error(e.Message);
_IsOpen = false;
}
}
}
