//---------------------------------------------------------------------
//---------------------------------------------------------------------
// CHANGED: CR39 (Split and merge complete messages)
// Return true or false success so the main class knows
// whether to notify the user following the completion of
// the merge.
//
private bool PerformLogicalMerge(bool physicallyMerge)
{
bool success = true;
try
{
if (_viewModelMain.IncidsSelectedMapCount <= 0)
{
return(false);
}
_mergeFeaturesWindow = new WindowMergeFeatures();
_mergeFeaturesWindow.Owner = App.Current.MainWindow;
_mergeFeaturesWindow.WindowStartupLocation = WindowStartupLocation.CenterOwner;
_mergeFeaturesWindow.MaxHeight = App.Current.MainWindow.ActualHeight;
HluDataSet.incidDataTable selectTable = new HluDataSet.incidDataTable();
_viewModelMain.HluTableAdapterManager.incidTableAdapter.Fill(selectTable,
ViewModelWindowMainHelpers.IncidSelectionToWhereClause(ViewModelWindowMain.IncidPageSize,
_viewModelMain.IncidTable.incidColumn.Ordinal, _viewModelMain.IncidTable, _viewModelMain.IncidsSelectedMap));
HluDataSet.incid_mm_polygonsDataTable polygons = new HluDataSet.incid_mm_polygonsDataTable();
_viewModelMain.GetIncidMMPolygonRows(ViewModelWindowMainHelpers.GisSelectionToWhereClause(
_viewModelMain.GisSelection.Select(), _viewModelMain.GisIDColumnOrdinals,
ViewModelWindowMain.IncidPageSize, polygons), ref polygons);
_mergeFeaturesViewModelLogical = new ViewModelMergeFeatures <HluDataSet.incidDataTable,
HluDataSet.incidRow>(selectTable, _viewModelMain.GisIDColumnOrdinals,
_viewModelMain.IncidTable.incidColumn.Ordinal, polygons.Select(r => r).ToArray(),
_viewModelMain.GISApplication);
_mergeFeaturesViewModelLogical.DisplayName = "Select INCID To Keep";
_mergeFeaturesViewModelLogical.RequestClose += new ViewModelMergeFeatures <HluDataSet.incidDataTable,
HluDataSet.incidRow> .RequestCloseEventHandler(_mergeFeaturesViewModelLogical_RequestClose);
_mergeFeaturesWindow.DataContext = _mergeFeaturesViewModelLogical;
_mergeResultFeatureIndex = -1;
_mergeFeaturesWindow.ShowDialog();
if (_mergeResultFeatureIndex == -1)
{
return(false);
}
_viewModelMain.ChangeCursor(Cursors.Wait, "Processing ...");
_viewModelMain.DataBase.BeginTransaction(true, IsolationLevel.ReadCommitted);
try
{
string keepIncid = selectTable[_mergeResultFeatureIndex].incid;
// assign selected incid to selected features except keepIncid
DataTable historyTable = _viewModelMain.GISApplication.MergeFeaturesLogically(
keepIncid, _viewModelMain.HistoryColumns);
if ((historyTable == null) || (historyTable.Rows.Count == 0))
{
throw new Exception("Failed to update GIS layer.");
}
// assign selected incid and new toid_fragment_id to selected features except keepIncid in DB shadow copy
string toidFragmentFormat = String.Format("D{0}",
_viewModelMain.HluDataset.incid_mm_polygons.toid_fragment_idColumn.MaxLength);
List <KeyValuePair <int, object> > updateFields = new List <KeyValuePair <int, object> >();
var keepPolygon = polygons.FirstOrDefault(r => r.incid == keepIncid);
if (keepPolygon != null)
{
updateFields = (from c in polygons.Columns.Cast <DataColumn>()
where (c.Ordinal != _viewModelMain.HluDataset.incid_mm_polygons.incidColumn.Ordinal) &&
(c.Ordinal != _viewModelMain.HluDataset.incid_mm_polygons.toidColumn.Ordinal) &&
(c.Ordinal != _viewModelMain.HluDataset.incid_mm_polygons.toid_fragment_idColumn.Ordinal) &&
(c.Ordinal != _viewModelMain.HluDataset.incid_mm_polygons.shape_lengthColumn.Ordinal) &&
(c.Ordinal != _viewModelMain.HluDataset.incid_mm_polygons.shape_areaColumn.Ordinal)
select new KeyValuePair <int, object>(c.Ordinal, keepPolygon[c.Ordinal])).ToList();
}
var updatePolygons = from r in polygons
where r.incid != keepIncid
orderby r.toid, r.toid_fragment_id
select r;
// update shadow DB copy of GIS layer
foreach (HluDataSet.incid_mm_polygonsRow r in updatePolygons)
{
r.incid = keepIncid;
for (int i = 0; i < updateFields.Count; i++)
{
r[updateFields[i].Key] = updateFields[i].Value;
}
}
if (_viewModelMain.HluTableAdapterManager.incid_mm_polygonsTableAdapter.Update(polygons) == -1)
{
throw new Exception(String.Format("Failed to update {0} table.", _viewModelMain.HluDataset.incid_mm_polygons.TableName));
}
// insert history rows (fixed value keepIncid)
Dictionary <int, string> fixedValues = new Dictionary <int, string>();
fixedValues.Add(_viewModelMain.HluDataset.history.incidColumn.Ordinal, keepIncid);
ViewModelWindowMainHistory vmHist = new ViewModelWindowMainHistory(_viewModelMain);
vmHist.HistoryWrite(fixedValues, historyTable, ViewModelWindowMain.Operations.LogicalMerge);
// count incid records no longer in use
List <string> deleteIncids = new List <string>();
IDataReader delReader = _viewModelMain.DataBase.ExecuteReader(String.Format(
"SELECT {0} FROM {1} WHERE {0} IN ({2}) GROUP BY {0} HAVING COUNT(*) = 0",
_viewModelMain.DataBase.QuoteIdentifier(_viewModelMain.IncidTable.incidColumn.ColumnName),
_viewModelMain.DataBase.QualifyTableName(_viewModelMain.IncidTable.TableName),
selectTable.Aggregate(new StringBuilder(), (sb, r) => sb.Append("," +
_viewModelMain.DataBase.QuoteValue(r.incid))).Remove(0, 1)),
_viewModelMain.DataBase.Connection.ConnectionTimeout, CommandType.Text);
if (delReader == null)
{
throw new Exception("Error reading incid database table.");
}
while (delReader.Read())
{
deleteIncids.Add(delReader.GetString(0));
}
delReader.Close();
// delete any incid records no longer in use
if (deleteIncids.Count > 0)
{
int numAffected = _viewModelMain.DataBase.ExecuteNonQuery(String.Format(
"DELETE FROM {0} WHERE {1} IN ({2})",
_viewModelMain.DataBase.QualifyTableName(_viewModelMain.HluDataset.incid.TableName),
_viewModelMain.DataBase.QuoteValue(_viewModelMain.HluDataset.incid.incidColumn.ColumnName),
String.Join(",", deleteIncids.Select(i => _viewModelMain.DataBase.QuoteValue(i)).ToArray())),
_viewModelMain.DataBase.Connection.ConnectionTimeout, CommandType.Text);
if (numAffected > 0)
{
_viewModelMain.IncidRowCount(true);
}
}
_viewModelMain.ViewModelUpdate.UpdateIncidModifiedColumns(keepIncid);
if (physicallyMerge && (MessageBox.Show("Perform physical merge as well?", "HLU: Physical Merge",
MessageBoxButton.YesNo, MessageBoxImage.Question, MessageBoxResult.No) == MessageBoxResult.Yes))
{
// restore the selection
_viewModelMain.GisSelection.Clear();
foreach (HluDataSet.incid_mm_polygonsRow r in polygons)
{
DataRow newRow = _viewModelMain.GisSelection.NewRow();
for (int i = 0; i < _viewModelMain.GisIDColumnOrdinals.Length; i++)
{
newRow[i] = r[_viewModelMain.GisIDColumnOrdinals[i]];
}
_viewModelMain.GisSelection.Rows.Add(newRow);
}
PerformPhysicalMerge();
}
else
{
_viewModelMain.DataBase.CommitTransaction();
_viewModelMain.HluDataset.AcceptChanges();
// Re-count the incid records in the database.
_viewModelMain.IncidRowCount(true);
// Reset the incid and map selections but don't move
// to the first incid in the database.
_viewModelMain.ClearFilter(false);
// Synch with the GIS selection.
//---------------------------------------------------------------------
// FIX: 027 Force refill of Incid table after split/merge
// Force the Incid table to be refilled because it has been
// updated directly in the database rather than via the
// local copy.
_viewModelMain.RefillIncidTable = true;
//---------------------------------------------------------------------
_viewModelMain.ReadMapSelection(true);
}
}
catch
{
_viewModelMain.DataBase.RollbackTransaction();
throw;
}
}
catch (Exception ex)
{
success = false;
MessageBox.Show("Merge operation failed. The error message returned was:\n\n" +
ex.Message, "HLU Merge Error", MessageBoxButton.OK, MessageBoxImage.Error);
}
finally { _viewModelMain.ChangeCursor(Cursors.Arrow, null); }
return(success);
}
private void PerformPhysicalMerge()
{
try
{
HluDataSet.incid_mm_polygonsDataTable selectTable = new HluDataSet.incid_mm_polygonsDataTable();
_viewModelMain.GetIncidMMPolygonRows(ViewModelWindowMainHelpers.GisSelectionToWhereClause(
_viewModelMain.GisSelection.Select(), _viewModelMain.GisIDColumnOrdinals,
ViewModelWindowMain.IncidPageSize, selectTable), ref selectTable);
if (selectTable.Count == 0)
{
return;
}
else if (selectTable.Count != _viewModelMain.GisSelection.Rows.Count)
{
throw new Exception(String.Format("GIS Layer and database are out of sync:\n{0} map polygons, {1} rows in table {2}.",
_viewModelMain.FragsSelectedMapCount, selectTable.Count, _viewModelMain.HluDataset.incid_mm_polygons.TableName));
}
// lowest toid_fragment_id in selection assigned to result feature
string newToidFragmentID = selectTable.Min(r => r.toid_fragment_id);
if (selectTable.GroupBy(r => r.incid).Count() == 1)
{
int minFragmID = Int32.Parse(newToidFragmentID);
_mergeResultFeatureIndex = selectTable.Select((r, index) =>
Int32.Parse(r.toid_fragment_id) == minFragmID ? index : -1).First(i => i != -1);
}
else
{
_mergeFeaturesWindow = new WindowMergeFeatures();
_mergeFeaturesWindow.Owner = App.Current.MainWindow;
_mergeFeaturesWindow.WindowStartupLocation = WindowStartupLocation.CenterOwner;
_mergeFeaturesViewModelPhysical = new ViewModelMergeFeatures
<HluDataSet.incid_mm_polygonsDataTable, HluDataSet.incid_mm_polygonsRow>(selectTable,
_viewModelMain.GisIDColumnOrdinals, _viewModelMain.IncidTable.incidColumn.Ordinal,
null, _viewModelMain.GISApplication);
_mergeFeaturesViewModelPhysical.DisplayName = "Select Feature To Keep";
_mergeFeaturesViewModelPhysical.RequestClose += new ViewModelMergeFeatures
<HluDataSet.incid_mm_polygonsDataTable, HluDataSet.incid_mm_polygonsRow>
.RequestCloseEventHandler(_mergeFeaturesViewModelPhysical_RequestClose);
_mergeFeaturesWindow.DataContext = _mergeFeaturesViewModelPhysical;
_mergeResultFeatureIndex = -1;
_mergeFeaturesWindow.ShowDialog();
}
if (_mergeResultFeatureIndex != -1)
{
_viewModelMain.ChangeCursor(Cursors.Wait, "Processing ...");
bool startTransaction = _viewModelMain.DataBase.Transaction != null;
if (startTransaction)
{
_viewModelMain.DataBase.BeginTransaction(true, IsolationLevel.ReadCommitted);
}
try
{
_viewModelMain.ViewModelUpdate.UpdateIncidModifiedColumns(_viewModelMain.IncidsSelectedMap.ElementAt(0));
List <List <SqlFilterCondition> > resultFeatureWhereClause =
ViewModelWindowMainHelpers.GisSelectionToWhereClause(
new HluDataSet.incid_mm_polygonsRow[] { selectTable[_mergeResultFeatureIndex] },
_viewModelMain.GisIDColumnOrdinals, ViewModelWindowMain.IncidPageSize, selectTable);
if (resultFeatureWhereClause.Count != 1)
{
throw new Exception("Error getting result feature from database.");
}
List <List <SqlFilterCondition> > mergeFeaturesWhereClause =
ViewModelWindowMainHelpers.GisSelectionToWhereClause(
selectTable.Where((r, index) => index != _mergeResultFeatureIndex).ToArray(),
_viewModelMain.GisIDColumnOrdinals, ViewModelWindowMain.IncidPageSize, selectTable);
// historyTable contains rows of features merged into result feature (i.e. no longer existing)
// and last row with data of result feature (remaining in GIS, lowest toid_fragment_id of merged features)
// this last row must be removed before writing history
// but is needed to update geometry fields in incid_mm_polygons
DataTable historyTable = _viewModelMain.GISApplication.MergeFeatures(newToidFragmentID,
resultFeatureWhereClause[0].Select(c => c.Clone()).ToList(), _viewModelMain.HistoryColumns);
if (historyTable == null)
{
throw new Exception("GIS merge operation failed.");
}
DataTable resultTable = historyTable.Clone();
DataRow resultRow = historyTable.AsEnumerable().FirstOrDefault(r =>
r.Field <string>(_viewModelMain.HluDataset.history.toid_fragment_idColumn.ColumnName) == newToidFragmentID);
if (resultRow == null)
{
throw new Exception(String.Format(
"Failed to obtain geometry data of result feature from {0}.", _viewModelMain.GISApplication.ApplicationType));
}
resultTable.LoadDataRow(resultRow.ItemArray, true);
resultRow.Delete();
historyTable.AcceptChanges();
// synchronize DB shadow copy of GIS layer
MergeSynchronizeIncidMMPolygons(selectTable, resultTable, newToidFragmentID,
resultFeatureWhereClause[0], mergeFeaturesWhereClause);
// insert history rows (fixed values incid, toid, newToidFragmentID)
Dictionary <int, string> fixedValues = new Dictionary <int, string>();
fixedValues.Add(_viewModelMain.HluDataset.history.incidColumn.Ordinal, selectTable[0].incid);
fixedValues.Add(_viewModelMain.HluDataset.history.toidColumn.Ordinal, selectTable[0].toid);
fixedValues.Add(_viewModelMain.HluDataset.history.toid_fragment_idColumn.Ordinal, newToidFragmentID);
ViewModelWindowMainHistory vmHist = new ViewModelWindowMainHistory(_viewModelMain);
vmHist.HistoryWrite(fixedValues, historyTable, ViewModelWindowMain.Operations.PhysicalMerge);
if (startTransaction)
{
_viewModelMain.DataBase.CommitTransaction();
_viewModelMain.HluDataset.AcceptChanges();
}
_viewModelMain.IncidRowCount(true);
_viewModelMain.ClearFilter();
_viewModelMain.ReadMapSelection(true);
}
catch
{
if (startTransaction)
{
_viewModelMain.DataBase.RollbackTransaction();
}
throw;
}
}
}
catch (Exception ex)
{
MessageBox.Show("Merge operation failed. The error message returned was:\n\n" +
ex.Message, "HLU Merge Error", MessageBoxButton.OK, MessageBoxImage.Error);
}
finally { _viewModelMain.ChangeCursor(Cursors.Arrow, null); }
}