public EsentGeometryInitialiser(EsentGeometryStore esentGeometryStore, EsentShapeGeometryCursor shapeGeometryCursor, EsentShapeInstanceCursor shapeInstanceCursor)
{
try
{
_esentGeometryStore = esentGeometryStore;
_shapeGeometryCursor = shapeGeometryCursor;
_shapeInstanceCursor = shapeInstanceCursor;
_geometryContextId = new IntPtr(_shapeGeometryCursor.GetHashCode());
_instanceContextId = new IntPtr(_shapeInstanceCursor.GetHashCode());
SetGeometryContext();
try
{
_shapeGeometryTransaction = _shapeGeometryCursor.BeginLazyTransaction();
}
finally { ResetGeometryContext(); }
SetInstanceContext();
try
{
_shapeInstanceTransaction = _shapeInstanceCursor.BeginLazyTransaction();
}
finally{ ResetInstanceContext(); }
_geometryCount = 0;
_instanceCount = 0;
}
catch (Exception e)
{
throw new Exception("Error creating transactions", e);
}
}
public EsentGeometryStoreReader(EsentModel esentModel)
{
_esentModel = esentModel;
_shapeGeometryCursor = _esentModel.GetShapeGeometryTable();
_shapeInstanceCursor = _esentModel.GetShapeInstanceTable();
_shapeGeometryTransaction = _shapeGeometryCursor.BeginReadOnlyTransaction();
_shapeInstanceTransaction = _shapeInstanceCursor.BeginReadOnlyTransaction();
_regionsList = new XbimContextRegionCollection();
IXbimShapeGeometryData regions = new XbimRegionCollection();
if (_shapeGeometryCursor.TryMoveFirstRegion(ref regions))
{
do
{
_regionsList.Add((XbimRegionCollection)regions);
regions = new XbimRegionCollection();
} while (_shapeGeometryCursor.TryMoveNextRegion(ref regions));
}
if (!_regionsList.Any()) //we might have an old xbim database regions were stored in the geometry table
{
var legacyCursor = _esentModel.GetGeometryTable();
using (var txn = legacyCursor.BeginReadOnlyTransaction())
{
foreach (var regionData in legacyCursor.GetGeometryData(Xbim.Common.Geometry.XbimGeometryType.Region))
{
_regionsList.Add(XbimRegionCollection.FromArray(regionData.ShapeData));
}
}
_esentModel.FreeTable(legacyCursor);
}
_contextIds = new HashSet <int>(ContextIds);
}
public IGeometryStoreInitialiser BeginInit()
{
try
{
if (_currentTransaction == null) //we can start a new one
{
//dispose of any tables because we are going to clear them
if (_shapeGeometryCursor != null)
{
_shapeGeometryCursor.Dispose();
_shapeGeometryCursor = null;
}
if (_shapeInstanceCursor != null)
{
_shapeInstanceCursor.Dispose();
_shapeInstanceCursor = null;
}
//delete any geometries in the database
_esentModel.ClearGeometryTables();
_shapeGeometryCursor = _esentModel.GetShapeGeometryTable();
_shapeInstanceCursor = _esentModel.GetShapeInstanceTable();
_currentTransaction = new EsentGeometryInitialiser(this, _shapeGeometryCursor, _shapeInstanceCursor);
return(_currentTransaction);
}
throw new Exception("A transaction is in operation on the geometry store");
}
catch (Exception e)
{
if (_shapeGeometryCursor != null)
{
_esentModel.FreeTable(_shapeGeometryCursor);
}
if (_shapeInstanceCursor != null)
{
_esentModel.FreeTable(_shapeInstanceCursor);
}
_currentTransaction = null;
throw new Exception("Begin initialisation failed on Geometry Store", e);
}
}
/// <summary>
/// Returns the table to the cache for reuse
/// </summary>
/// <param name="table"></param>
public void FreeTable(EsentShapeGeometryCursor table)
{
InstanceCache.FreeTable(table);
}
