public IPlugInCursorHelper FetchByEnvelope(int ClassIndex, IEnvelope env, bool strictSearch, string WhereClause, object FieldMap)
{
if (this.DatasetType == esriDatasetType.esriDTTable)
{
return(null);
}
//env passed in always has same spatial reference as the data
//for identify, it will check if search geometry intersect dataset bound
//but not ITable.Search(pSpatialQueryFilter, bRecycle) etc
//so here we should check if input env falls within extent
IEnvelope boundEnv = this.Bounds;
boundEnv.Project(env.SpatialReference);
if (boundEnv.IsEmpty)
{
return(null); //or raise error?
}
try
{
SimplePointCursor spatialCursor = new SimplePointCursor(m_fullPath,
this.get_Fields(ClassIndex), -1,
(System.Array)FieldMap, env, this.geometryTypeByID(ClassIndex));
setMZ(spatialCursor, ClassIndex);
return((IPlugInCursorHelper)spatialCursor);
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine(ex.Message);
return(null);
}
}
public IPlugInCursorHelper FetchAll(int ClassIndex, string WhereClause, object FieldMap)
{
try
{
SimplePointCursor allCursor =
new SimplePointCursor(m_fullPath, this.get_Fields(ClassIndex), -1,
(System.Array)FieldMap, null, this.geometryTypeByID(ClassIndex));
setMZ(allCursor, ClassIndex);
return((IPlugInCursorHelper)allCursor);
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine(ex.Message);
return(null);
}
}
public IPlugInCursorHelper FetchByID(int ClassIndex, int ID, object FieldMap)
{
try
{
SimplePointCursor idCursor =
new SimplePointCursor(m_fullPath, this.get_Fields(ClassIndex), ID,
(System.Array)FieldMap, null, this.geometryTypeByID(ClassIndex));
setMZ(idCursor, ClassIndex);
return((IPlugInCursorHelper)idCursor);
}
catch (Exception ex) //will catch NextRecord error if it reaches EOF without finding a record
{
System.Diagnostics.Debug.WriteLine(ex.Message);
return(null);
}
}
private void setMZ(SimplePointCursor sptCursor, int Index)
{
sptCursor.HasM = ((Index >= 3 && Index < 6) || Index >= 9);
sptCursor.HasZ = (Index >= 6);
}