Exemple #1
0
        /// <summary>
        /// Gets a cursor helper given a filter
        /// </summary>
        /// <param name="classIndex">ignore - feature datasets unsupported</param>
        /// <param name="env">Optional bounding box</param>
        /// <param name="strictSearch">ignore this parameter</param>
        /// <param name="whereClause">Optional where clause - unsupported</param>
        /// <param name="fidSet">Optional list of OIDs to select</param>
        /// <param name="fieldMap">Which fields are included in results</param>
        /// <returns></returns>
        public IPlugInCursorHelper FetchWithFilter(int classIndex, IEnvelope env, bool strictSearch, string WhereClause, IFIDSet fidSet, object fieldMap)
        {
            // without a OID list perform fetch by envelope
            if (null == fidSet)
            {
                return(this.FetchByEnvelope(classIndex, env, strictSearch, WhereClause, fieldMap));
            }

            //to-do write SQL to IMongoQuery translator and assign to conditions if where clause is non-null
            IMongoQuery conditions = null;

            // build a mongo IN query of all OIDs
            int       count = fidSet.Count();
            BsonArray ba    = new BsonArray(count);

            fidSet.Reset();
            for (int i = 0; i < count; i++)
            {
                int oid;
                fidSet.Next(out oid);
                ba.Add(BsonValue.Create(oid));
            }

            if (conditions == null)
            {
                conditions = Query.In(CommonConst.OID, ba);
            }
            else
            {
                conditions = Query.And(new IMongoQuery[] { Query.In(CommonConst.OID, ba), conditions });
            }

            return(new MongoDBCursor(m_Connection[m_Entry.Name], env, conditions, CommonConst.SHAPEFIELD, (System.Array)fieldMap, m_Entry.Fields));
        }
Exemple #2
0
        /// <summary>
        ///     Creates an <see cref="IEnumerable{T}" /> from an <see cref="IFIDSet" />
        /// </summary>
        /// <param name="source">An <see cref="IFIDSet" /> to create an <see cref="IEnumerable{T}" /> from.</param>
        /// <returns>An <see cref="IEnumerable{T}" /> that contains the IDs from the input source.</returns>
        public static IEnumerable <int> AsEnumerable(this IFIDSet source)
        {
            if (source != null)
            {
                source.Reset();
                int objectId;

                source.Next(out objectId);
                while (objectId >= 0)
                {
                    yield return(objectId);

                    source.Next(out objectId);
                }
            }
        }
Exemple #3
0
        void AddEmptyPlansToList(ICadastralFabric Fabric, IFIDSet EmptyPlansFIDSet, dlgEmptyPlansList EmptyPlansList)
        {
            ITable         pPlansTable = Fabric.get_CadastralTable(esriCadastralFabricTable.esriCFTPlans);
            CheckedListBox list        = EmptyPlansList.checkedListBox1;
            IArray         array       = new ArrayClass();

            for (int idx = 0; idx <= (EmptyPlansFIDSet.Count() - 1); idx++)
            {
                // Add the name of the plan to the list
                Int32 i_x;
                Int32 iPlanName;
                iPlanName = pPlansTable.FindField("NAME");
                EmptyPlansFIDSet.Next(out i_x);
                array.Add(i_x);
                string sPlanName = (string)pPlansTable.GetRow(i_x).get_Value(iPlanName);
                list.Items.Add(sPlanName, true);
            }
            // Bind array of plan ids with the list
            list.Tag = (object)array;
            if (list.Items.Count > 0)
            {
                EmptyPlansList.checkedListBox1_SelectedValueChanged(null, null);
            }
        }
 public void FIDsetToLongArray(IFIDSet InFIDSet, ref ILongArray OutLongArray, IStepProgressor StepProgressor)
 {
     Int32 pfID = -1;
       InFIDSet.Reset();
       double dMax = InFIDSet.Count();
       int iMax = (int)(dMax);
       for (Int32 pCnt = 0; pCnt <= (InFIDSet.Count() - 1); pCnt++)
       {
     InFIDSet.Next(out pfID);
     OutLongArray.Add(pfID);
     if (StepProgressor != null)
     {
       if (StepProgressor.Position < StepProgressor.MaxRange)
     StepProgressor.Step();
     }
       }
       return;
 }
 void AddEmptyPlansToList(ICadastralFabric Fabric, IFIDSet EmptyPlansFIDSet, dlgEmptyPlansList EmptyPlansList)
 {
     ITable pPlansTable = Fabric.get_CadastralTable(esriCadastralFabricTable.esriCFTPlans);
       CheckedListBox list = EmptyPlansList.checkedListBox1;
       IArray array = new ArrayClass();
       for (int idx = 0; idx <= (EmptyPlansFIDSet.Count() - 1); idx++)
       {
     // Add the name of the plan to the list
     Int32 i_x;
     Int32 iPlanName;
     iPlanName = pPlansTable.FindField("NAME");
     EmptyPlansFIDSet.Next(out i_x);
     array.Add(i_x);
     string sPlanName = (string)pPlansTable.GetRow(i_x).get_Value(iPlanName);
     list.Items.Add(sPlanName, true);
       }
       // Bind array of plan ids with the list
       list.Tag = (object)array;
       if(list.Items.Count>0)
     EmptyPlansList.checkedListBox1_SelectedValueChanged(null, null);
 }
        public bool DeleteRowsUnversioned(IWorkspace TheWorkSpace, ITable inTable,
                                          IFIDSet pFIDSet, IStepProgressor StepProgressor, ITrackCancel TrackCancel)
        {
            IMouseCursor pMouseCursor = new MouseCursorClass();

            pMouseCursor.SetCursor(2);

            if (StepProgressor != null)
            {
                StepProgressor.MinRange = StepProgressor.Position; //reset the progress bar position
                StepProgressor.MaxRange = StepProgressor.Position + pFIDSet.Count();
                if (StepProgressor.Position < StepProgressor.MaxRange)
                {
                    StepProgressor.Step();
                }
            }

            IQueryFilter pQF = new QueryFilterClass();

            ISQLSyntax pSQLSyntax = (ISQLSyntax)TheWorkSpace;
            string     sPref      = pSQLSyntax.GetSpecialCharacter(esriSQLSpecialCharacters.esriSQL_DelimitedIdentifierPrefix);
            string     sSuff      = pSQLSyntax.GetSpecialCharacter(esriSQLSpecialCharacters.esriSQL_DelimitedIdentifierSuffix);

            ICursor ipCursor = null;
            IRow    pRow     = null;
            //make sure that there are no more then 999 tokens for the in clause(ORA- query will otherwise error on an Oracle database)
            int    iTokenLimit     = 995;
            int    iTokenSet       = 0; //the index of the set of 995 tokens
            string sWhereClauseLHS = sPref + inTable.OIDFieldName + sSuff + " in (";

            string[] ids = { sWhereClauseLHS };

            try
            {
                ITableWrite pTableWr = (ITableWrite)inTable;
                pFIDSet.Reset();
                bool  bCont = true;
                Int32 iID;

                Int32 count = pFIDSet.Count();
                int   j     = 0; //inner count for each set of IDs
                for (int k = 0; k < count; k++)
                {
                    if (j > iTokenLimit)
                    {                                     //over the limit for this Token set, time to create a new set
                        ids[iTokenSet] += ")";            //close the previous set
                        RedimPreserveString(ref ids, 1);  //make space in the string array for the next token set
                        iTokenSet++;                      //increment the index
                        ids[iTokenSet] = sWhereClauseLHS; //left-hand side of the where clause
                        j = 0;                            //reset the inner count back to zero
                    }

                    pFIDSet.Next(out iID);
                    if (j > 0) //write a comma if this is not the first ID
                    {
                        ids[iTokenSet] += ",";
                    }
                    ids[iTokenSet] += iID.ToString();
                    j++; //increment the inner count
                }
                ids[iTokenSet] += ")";

                if (count > 0)
                {
                    for (int k = 0; k <= iTokenSet; k++)
                    {
                        pQF.WhereClause = ids[k];
                        ipCursor        = pTableWr.UpdateRows(pQF, false);
                        pRow            = ipCursor.NextRow();
                        while (pRow != null)
                        {
                            ipCursor.DeleteRow();
                            Marshal.ReleaseComObject(pRow);
                            if (StepProgressor != null)
                            {
                                //Check if the cancel button was pressed. If so, stop process
                                if (TrackCancel != null)
                                {
                                    bCont = TrackCancel.Continue();
                                }
                                if (!bCont)
                                {
                                    break;
                                }
                                if (StepProgressor.Position < StepProgressor.MaxRange)
                                {
                                    StepProgressor.Step();
                                }
                            }
                            pRow = ipCursor.NextRow();
                        }

                        if (!bCont)
                        {
                            AbortEditing(TheWorkSpace);
                            if (ipCursor != null)
                            {
                                Marshal.ReleaseComObject(ipCursor);
                            }
                            if (pRow != null)
                            {
                                Marshal.ReleaseComObject(pRow);
                            }
                            if (pQF != null)
                            {
                                Marshal.ReleaseComObject(pQF);
                            }
                            if (pMouseCursor != null)
                            {
                                Marshal.ReleaseComObject(pMouseCursor);
                            }
                            return(false);
                        }
                        Marshal.ReleaseComObject(ipCursor);
                    }
                    Marshal.ReleaseComObject(pQF);
                }

                Marshal.ReleaseComObject(pMouseCursor);
                return(true);
            }

            catch (COMException ex)
            {
                if (ipCursor != null)
                {
                    Marshal.ReleaseComObject(ipCursor);
                }
                if (pRow != null)
                {
                    Marshal.ReleaseComObject(pRow);
                }
                if (pQF != null)
                {
                    Marshal.ReleaseComObject(pQF);
                }
                if (pMouseCursor != null)
                {
                    Marshal.ReleaseComObject(pMouseCursor);
                }
                MessageBox.Show(Convert.ToString(ex.ErrorCode));
                return(false);
            }
        }
        public bool DeleteRowsByFIDSet(ITable inTable, IFIDSet pFIDSet,
                                       IStepProgressor StepProgressor, ITrackCancel TrackCancel)
        {//this routine uses the GetRows method, avoids the need to break up the InClause.
            IMouseCursor pMouseCursor = new MouseCursorClass();

            pMouseCursor.SetCursor(2);
            try
            {
                pFIDSet.Reset();
                int[] iID   = { };
                bool  bCont = true;
                iID = RedimPreserveInt(ref iID, pFIDSet.Count());
                for (int iCount = 0; iCount <= pFIDSet.Count() - 1; iCount++)
                {
                    pFIDSet.Next(out iID[iCount]);
                }
                ICursor pCursor = inTable.GetRows(iID, false);
                IRow    row     = pCursor.NextRow();
                if (StepProgressor != null)
                {
                    StepProgressor.MinRange = StepProgressor.Position; //reset the progress bar position
                    StepProgressor.MaxRange = StepProgressor.Position + pFIDSet.Count();
                    if (StepProgressor.Position < StepProgressor.MaxRange)
                    {
                        StepProgressor.Step();
                    }
                }
                while (row != null)
                {
                    //Check if the cancel button was pressed. If so, stop process
                    if (StepProgressor != null)
                    {
                        if (TrackCancel != null)
                        {
                            bCont = TrackCancel.Continue();
                        }
                        if (!bCont)
                        {
                            break;
                        }
                    }
                    row.Delete();
                    Marshal.ReleaseComObject(row);
                    row = pCursor.NextRow();
                    if (StepProgressor != null)
                    {
                        if (StepProgressor.Position < StepProgressor.MaxRange)
                        {
                            StepProgressor.Step();
                        }
                    }
                }
                Marshal.ReleaseComObject(pCursor);
                inTable = null;
                iID     = null;
                if (!bCont)
                {
                    return(false);
                }
                return(true);
            }
            catch (COMException ex)
            {
                StepProgressor = null;
                MessageBox.Show(ex.Message);
                return(false);
            }
        }
        public void EmptyGeometriesUnversioned(IWorkspace TheWorkSpace, IFeatureClass inTable, IFIDSet pFIDSet)
        {
            IMouseCursor pMouseCursor = new MouseCursorClass();
              pMouseCursor.SetCursor(2);

              IQueryFilter pQF = new QueryFilterClass();

              ISQLSyntax pSQLSyntax = (ISQLSyntax)TheWorkSpace;
              string sPref = pSQLSyntax.GetSpecialCharacter(esriSQLSpecialCharacters.esriSQL_DelimitedIdentifierPrefix);
              string sSuff = pSQLSyntax.GetSpecialCharacter(esriSQLSpecialCharacters.esriSQL_DelimitedIdentifierSuffix);

              ICursor ipCursor = null;
              IRow pRow = null;
              //make sure that there are no more then 999 tokens for the in clause(ORA- query will otherwise error on an Oracle database)
              int iTokenLimit = 995;
              int iTokenSet = 0; //the index of the set of 995 tokens
              string sWhereClauseLHS = sPref + inTable.OIDFieldName + sSuff + " in (";
              string[] ids = { sWhereClauseLHS };

              try
              {
            ITableWrite pTableWr = (ITableWrite)inTable;
            pFIDSet.Reset();
            bool bCont = true;
            Int32 iID;

            Int32 count = pFIDSet.Count();
            int j = 0; //inner count for each set of IDs
            for (int k = 0; k < count; k++)
            {
              if (j > iTokenLimit)
              {//over the limit for this Token set, time to create a new set
            ids[iTokenSet] += ")";//close the previous set
            RedimPreserveString(ref ids, 1);//make space in the string array for the next token set
            iTokenSet++;//increment the index
            ids[iTokenSet] = sWhereClauseLHS; //left-hand side of the where clause
            j = 0;//reset the inner count back to zero
              }

              pFIDSet.Next(out iID);
              if (j > 0) //write a comma if this is not the first ID
            ids[iTokenSet] += ",";
              ids[iTokenSet] += iID.ToString();
              j++; //increment the inner count
            }
            ids[iTokenSet] += ")";

            if (count > 0)
            {
              IFeature pFeat = null;
              ISet pRowSet = new SetClass();
              for (int k = 0; k <= iTokenSet; k++)
              {
            pRowSet.RemoveAll();
            pQF.WhereClause = ids[k];
            ipCursor = pTableWr.UpdateRows(pQF, false);
            pRow = ipCursor.NextRow();
            while (pRow != null)
            {
              pFeat = (IFeature)pRow;
              IGeometry pGeo = pFeat.ShapeCopy;
              pGeo.SetEmpty();
              pFeat.Shape = pGeo;
              ipCursor.UpdateRow(pRow);
              Marshal.ReleaseComObject(pRow);
              pRow = ipCursor.NextRow();
            }
            if (!bCont)
            {
              AbortEditing(TheWorkSpace);
              if (ipCursor != null)
                Marshal.ReleaseComObject(ipCursor);
              if (pRow != null)
                Marshal.ReleaseComObject(pRow);
              //if (pQF != null)
              //  Marshal.ReleaseComObject(pQF);
              return;
            }
              }
              Marshal.ReleaseComObject(ipCursor);
              //Marshal.ReleaseComObject(pQF);
            }
            return;
              }

              catch (COMException ex)
              {
            if (ipCursor != null)
              Marshal.ReleaseComObject(ipCursor);
            if (pRow != null)
              Marshal.ReleaseComObject(pRow);
            //if (pQF != null)
            //  Marshal.ReleaseComObject(pQF);
            MessageBox.Show(Convert.ToString(ex.ErrorCode));
            return;
              }
        }
 public void EmptyGeometries(IFeatureClass inFeatureClass, IFIDSet pFIDSet)
 {
     try
       {
     if (pFIDSet.Count() < 1)
       return;
     pFIDSet.Reset();
     int[] iID = { };
     iID = RedimPreserveInt(ref iID, pFIDSet.Count());
     for (int iCount = 0; iCount <= pFIDSet.Count() - 1; iCount++)
       pFIDSet.Next(out iID[iCount]);
     IFeatureCursor pFeatCursor = inFeatureClass.GetFeatures(iID, false);
     IFeature pFeat = pFeatCursor.NextFeature();
     while (pFeat != null)
     {
       IGeometry pGeo = pFeat.ShapeCopy;
       pGeo.SetEmpty();
       pFeat.Shape = pGeo;
       pFeat.Store();
       Marshal.ReleaseComObject(pFeat);
       pFeat = pFeatCursor.NextFeature();
     }
     Marshal.ReleaseComObject(pFeatCursor);
     iID = null;
     return;
       }
       catch (Exception ex)
       {
     MessageBox.Show(ex.Message);
     return;
       }
 }
        public bool DeleteRowsUnversioned(IWorkspace TheWorkSpace, ITable inTable,
      IFIDSet pFIDSet, IStepProgressor StepProgressor, ITrackCancel TrackCancel)
        {
            IMouseCursor pMouseCursor = new MouseCursorClass();
              pMouseCursor.SetCursor(2);

              Debug.WriteLine(StepProgressor.Position);
              Debug.WriteLine(StepProgressor.MaxRange);
              IQueryFilter pQF = new QueryFilterClass();

              ISQLSyntax pSQLSyntax = (ISQLSyntax)TheWorkSpace;
              string sPref = pSQLSyntax.GetSpecialCharacter(esriSQLSpecialCharacters.esriSQL_DelimitedIdentifierPrefix);
              string sSuff = pSQLSyntax.GetSpecialCharacter(esriSQLSpecialCharacters.esriSQL_DelimitedIdentifierSuffix);

              ICursor ipCursor = null;
              IRow pRow = null;
              //make sure that there are no more then 999 tokens for the in clause(ORA- query will otherwise error on an Oracle database)
              int iTokenLimit = 995;
              int iTokenSet = 0; //the index of the set of 995 tokens
              string sWhereClauseLHS = sPref + inTable.OIDFieldName + sSuff + " in (";
              string[] ids = { sWhereClauseLHS };

              try
              {
            ITableWrite pTableWr = (ITableWrite)inTable;
            pFIDSet.Reset();
            bool bCont = true;
            Int32 iID;

            Int32 count = pFIDSet.Count();
            int j = 0; //inner count for each set of IDs
            for (int k = 0; k < count; k++)
            {
              if (j > iTokenLimit)
              {//over the limit for this Token set, time to create a new set
            ids[iTokenSet] += ")";//close the previous set
            RedimPreserveString(ref ids, 1);//make space in the string array for the next token set
            iTokenSet++;//increment the index
            ids[iTokenSet] = sWhereClauseLHS; //left-hand side of the where clause
            j = 0;//reset the inner count back to zero
              }

              pFIDSet.Next(out iID);
              if (j > 0) //write a comma if this is not the first ID
            ids[iTokenSet] += ",";
              ids[iTokenSet] += iID.ToString();
              j++; //increment the inner count
            }
            ids[iTokenSet] += ")";

            if (count > 0)
            {
              for (int k = 0; k <= iTokenSet; k++)
              {
            pQF.WhereClause = ids[k];
            ipCursor = pTableWr.UpdateRows(pQF, false);
            pRow = ipCursor.NextRow();
            while (pRow != null)
            {
              ipCursor.DeleteRow();
              Marshal.ReleaseComObject(pRow);
              if (StepProgressor != null)
              {
                //Check if the cancel button was pressed. If so, stop process
                if (TrackCancel != null)
                  bCont = TrackCancel.Continue();
                if (!bCont)
                  break;
                if (StepProgressor.Position < StepProgressor.MaxRange)
                  StepProgressor.Step();
              }
              pRow = ipCursor.NextRow();
            }

            if (!bCont)
            {
              AbortEditing(TheWorkSpace);
              if (ipCursor != null)
                Marshal.ReleaseComObject(ipCursor);
              if (pRow != null)
                Marshal.ReleaseComObject(pRow);
              //if (pQF != null)
              //  Marshal.ReleaseComObject(pQF);
              return false;
            }
            Marshal.ReleaseComObject(ipCursor);
              }
              //Marshal.ReleaseComObject(pQF);
            }
            Debug.WriteLine(StepProgressor.Position);
            return true;
              }

              catch (Exception ex)
              {
            if (ipCursor != null)
              Marshal.ReleaseComObject(ipCursor);
            if (pRow != null)
              Marshal.ReleaseComObject(pRow);
            //if (pQF != null)
            //  Marshal.ReleaseComObject(pQF);
            MessageBox.Show(Convert.ToString(ex.Message));
            return false;
              }
        }
        public bool DeleteRowsByFIDSetReturnGeomCollection(ITable inTable, IFIDSet pFIDSet,
  IStepProgressor StepProgressor, ITrackCancel TrackCancel, ref IGeometryCollection GeomCollection)
        {
            //this routine uses the GetRows method, avoids the need to break up the InClause.
              if (pFIDSet == null)
            return false;
              IMouseCursor pMouseCursor = new MouseCursorClass();
              pMouseCursor.SetCursor(2);
              try
              {
            pFIDSet.Reset();
            int[] iID = { };
            bool bCont = true;
            iID = RedimPreserveInt(ref iID, pFIDSet.Count());
            for (int iCount = 0; iCount <= pFIDSet.Count() - 1; iCount++)
              pFIDSet.Next(out iID[iCount]);
            ICursor pCursor = inTable.GetRows(iID, false);
            IRow row = pCursor.NextRow();
            if (StepProgressor != null)
            {
              if (StepProgressor.Position < StepProgressor.MaxRange)
            StepProgressor.Step();
            }
            while (row != null)
            {
              IFeature pFeat = row as IFeature;
              IGeometry pGeom = pFeat.ShapeCopy;
              if (pGeom != null)
              {
            if (!pGeom.IsEmpty)
            {
              object obj = Type.Missing;
              IEnvelope2 pEnv = (IEnvelope2)pGeom.Envelope;
              pEnv.Expand(0.1, 0.1, false);
              GeomCollection.AddGeometry(pEnv, ref obj, ref obj);
            }
              }
              //Check if the cancel button was pressed. If so, stop process
              if (StepProgressor != null)
              {
            if (TrackCancel != null)
              bCont = TrackCancel.Continue();
            if (!bCont)
              break;
              }
              row.Delete();
              Marshal.ReleaseComObject(row);
              row = pCursor.NextRow();
              if (StepProgressor != null)
              {
            if (StepProgressor.Position < StepProgressor.MaxRange)
              StepProgressor.Step();
              }
            }
            Marshal.ReleaseComObject(pCursor);
            inTable = null;
            iID = null;
            if (!bCont)
              return false;
            return true;
              }
              catch (COMException ex)
              {
            StepProgressor = null;
            if (ex.ErrorCode == -2147217400)
              //MessageBox.Show(ex.ErrorCode + Environment.NewLine + ex.Message +
              //  Environment.NewLine + "This error indicates that the fabric may not have been correctly upgraded.");
              //TODO: need to confirm this.
              m_LastErrorCode = ex.ErrorCode;
            else
              MessageBox.Show(ex.Message + Environment.NewLine + ex.ErrorCode);

            m_LastErrorCode = ex.ErrorCode;
            return false;
              }
        }
 public void IntersectFIDSetCommonIDs(IFIDSet InFIDSet1, IFIDSet InFIDSet2, out IFIDSet OutFIDSet)
 {
     IFIDSet OutFIDSet2 = new FIDSetClass();
       Int32 pfID = -1;
       bool bExists = false;
       InFIDSet1.Reset();
       for (Int32 i = 0; i <= (InFIDSet1.Count() - 1); i++)
       {
     InFIDSet1.Next(out pfID);
     InFIDSet2.Find(pfID, out bExists);
     if (bExists)
       OutFIDSet2.Add(pfID);
       }
       OutFIDSet = OutFIDSet2;
       return;
 }
Exemple #13
0
        /// <summary>
        ///     Gets the differences between the <paramref name="source" /> and <paramref name="target" /> versions that need to be
        ///     checked-in or exported.
        /// </summary>
        /// <param name="source">The source (or child) version.</param>
        /// <param name="target">The target (or parent) version.</param>
        /// <param name="predicate">
        ///     The predicate that defines a set of criteria and determines whether the specified differences
        ///     will be loaded.
        /// </param>
        /// <param name="dataChangeTypes">The data change types.</param>
        /// <returns>
        ///     Returns a <see cref="Dictionary{String, DeltaRow}" /> representing the differences for the table (or
        ///     key).
        /// </returns>
        /// <exception cref="System.ArgumentNullException">
        ///     target
        ///     or
        ///     predicate
        ///     or
        ///     dataChangeTypes
        /// </exception>
        public static Dictionary <string, DeltaRowCollection> GetDataChanges(this IVersion source, IVersion target, Func <IModifiedClassInfo, bool> predicate, params esriDataChangeType[] dataChangeTypes)
        {
            if (source == null)
            {
                return(null);
            }
            if (target == null)
            {
                throw new ArgumentNullException("target");
            }
            if (predicate == null)
            {
                throw new ArgumentNullException("predicate");
            }
            if (dataChangeTypes == null)
            {
                throw new ArgumentNullException("dataChangeTypes");
            }

            var list = new Dictionary <string, DeltaRowCollection>(StringComparer.Create(CultureInfo.InvariantCulture, true));

            IVersionDataChangesInit vdci         = new VersionDataChangesClass();
            IWorkspaceName          wsNameSource = (IWorkspaceName)((IDataset)source).FullName;
            IWorkspaceName          wsNameTarget = (IWorkspaceName)((IDataset)target).FullName;

            vdci.Init(wsNameSource, wsNameTarget);

            IDataChanges     dataChanges = (IDataChanges)vdci;
            IDataChangesInfo dci         = (IDataChangesInfo)vdci;

            var tasks = new List <Action>();

            IEnumModifiedClassInfo enumMci = dataChanges.GetModifiedClassesInfo();

            foreach (var mci in enumMci.AsEnumerable())
            {
                // Validate that the table needs to be loaded.
                if (predicate(mci))
                {
                    string tableName = mci.ChildClassName;
                    tasks.Add(() =>
                    {
                        var rows    = new DeltaRowCollection(mci, source, target);
                        var actions = new List <Action>();

                        // Determines if the table represents a feature class.
                        bool isFeatureClass = mci.DatasetType == esriDatasetType.esriDTFeatureClass;

                        // Iterate through all of the data change types.
                        foreach (var dataChangeType in dataChangeTypes)
                        {
                            actions.Add(() =>
                            {
                                // IRow objects returned from a difference cursor are meant to be a read only. Thus, only the OIDs are being loaded and
                                // the rows are hydrated from the struct.
                                IFIDSet set = dci.ChangedIDs[tableName, dataChangeType];
                                set.Reset();

                                int oid;
                                set.Next(out oid);
                                while (oid != -1)
                                {
                                    var row = new DeltaRow(dataChangeType, oid, tableName, isFeatureClass);
                                    rows.Add(row);

                                    set.Next(out oid);
                                }
                            });
                        }

                        if (actions.Any())
                        {
                            Task.WaitAll(actions);
                        }

                        list.Add(tableName, rows);
                    });
                }
            }

            if (tasks.Any())
            {
                Task.WaitAll(tasks);
            }

            return(list);
        }