System.Data.SQLite
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Overview
Comment:The 'Apply' methods logically belong to the change set, not the session.
Downloads: Tarball | ZIP archive | SQL archive
Timelines: family | ancestors | descendants | both | sessions
Files: files | file ages | folders
SHA1: baed0aa5035d4de06832a3a454144d93f2370c2e
User & Date: mistachkin 2017-10-05 22:55:27
Context
2017-10-05
23:10
Cleanup integration between the session extension classes and the SQLiteConnection class. check-in: 7529b50e97 user: mistachkin tags: sessions
22:55
The 'Apply' methods logically belong to the change set, not the session. check-in: baed0aa503 user: mistachkin tags: sessions
22:33
Further refinements. check-in: a16ea17d38 user: mistachkin tags: sessions
Changes
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Changes to System.Data.SQLite/SQLiteSessions.cs.

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    #region Session Extension Interfaces
    public interface ISQLiteChangeSet
    {
        bool? IsPatchSet { get; }

        ISQLiteChangeSet Invert();
        ISQLiteChangeSet CombineWith(ISQLiteChangeSet changeSet);











    }

    ///////////////////////////////////////////////////////////////////////////

    public interface ISQLiteChangeGroup
    {
        void AddChangeSet(byte[] rawData);
................................................................................
        void CreatePatchSet(ref byte[] rawData);
        void CreatePatchSet(Stream stream);

        void LoadDifferencesFromTable(
            string fromDatabaseName,
            string tableName
        );

        void ApplyChangeSet(
            byte[] rawData,
            SessionConflictCallback conflictCallback,
            object clientData
        );

        void ApplyChangeSet(
            Stream stream,
            SessionConflictCallback conflictCallback,
            SessionTableFilterCallback tableFilterCallback,
            object clientData
        );
    }
    #endregion

    ///////////////////////////////////////////////////////////////////////////

    #region SQLiteChangeSetIterator Class
    internal sealed class SQLiteChangeSetIterator : IDisposable
................................................................................
                if (pError != IntPtr.Zero)
                {
                    SQLiteMemory.Free(pError);
                    pError = IntPtr.Zero;
                }
            }
        }

        ///////////////////////////////////////////////////////////////////////

        public void ApplyChangeSet(
            byte[] rawData,
            SessionConflictCallback conflictCallback,
            object clientData
            )
        {
            CheckDisposed();

            SQLiteConnectionFlags flags = GetConnectionFlags();

            int nData = 0;
            IntPtr pData = IntPtr.Zero;

            UnsafeNativeMethods.xSessionConflict xConflict =
                new UnsafeNativeMethods.xSessionConflict(
                    delegate(IntPtr context,
                             SQLiteChangeSetConflictType type,
                             IntPtr iterator)
            {
                ISQLiteChangeSetMetadataItem item = null;

                try
                {
                    return conflictCallback(clientData, type, item);
                }
                catch (Exception e)
                {
                    try
                    {
                        if ((flags & SQLiteConnectionFlags.LogCallbackException) ==
                                SQLiteConnectionFlags.LogCallbackException)
                        {
                            SQLiteLog.LogMessage(SQLiteBase.COR_E_EXCEPTION,
                                HelperMethods.StringFormat(CultureInfo.CurrentCulture,
                                "Caught exception in \"xConflict\" method: {0}",
                                e)); /* throw */
                        }
                    }
                    catch
                    {
                        // do nothing.
                    }
                }

                return SQLiteChangeSetConflictResult.Abort;
            });

            SQLiteConnectionHandle handle = SQLiteConnection.GetNativeHandle(
                connection);

            SQLiteErrorCode rc = UnsafeNativeMethods.sqlite3changeset_apply(
                handle, nData, pData, null, xConflict, IntPtr.Zero);

            if (rc != SQLiteErrorCode.Ok)
                throw new SQLiteException(rc, "sqlite3changeset_apply");
        }

        ///////////////////////////////////////////////////////////////////////

        public void ApplyChangeSet(
            Stream stream,
            SessionConflictCallback conflictCallback,
            SessionTableFilterCallback tableFilterCallback,
            object clientData
            )
        {
            CheckDisposed();

            SQLiteConnectionFlags flags = GetConnectionFlags();

            UnsafeNativeMethods.xSessionFilter xFilter =
                new UnsafeNativeMethods.xSessionFilter(
                    delegate(IntPtr context, byte[] tblName)
            {
                try
                {
                    string name = SQLiteString.GetStringFromUtf8Bytes(
                        tblName);

                    return tableFilterCallback(clientData, name) ? 1 : 0;
                }
                catch (Exception e)
                {
                    try
                    {
                        if ((flags & SQLiteConnectionFlags.LogCallbackException) ==
                                SQLiteConnectionFlags.LogCallbackException)
                        {
                            SQLiteLog.LogMessage(SQLiteBase.COR_E_EXCEPTION,
                                HelperMethods.StringFormat(CultureInfo.CurrentCulture,
                                "Caught exception in \"xFilter\" method: {0}",
                                e)); /* throw */
                        }
                    }
                    catch
                    {
                        // do nothing.
                    }
                }

                return 0;
            });

            UnsafeNativeMethods.xSessionConflict xConflict =
                new UnsafeNativeMethods.xSessionConflict(
                    delegate(IntPtr context,
                             SQLiteChangeSetConflictType type,
                             IntPtr iterator)
            {
                ISQLiteChangeSetMetadataItem item = null;

                try
                {
                    return conflictCallback(clientData, type, item);
                }
                catch (Exception e)
                {
                    try
                    {
                        if ((flags & SQLiteConnectionFlags.LogCallbackException) ==
                                SQLiteConnectionFlags.LogCallbackException)
                        {
                            SQLiteLog.LogMessage(SQLiteBase.COR_E_EXCEPTION,
                                HelperMethods.StringFormat(CultureInfo.CurrentCulture,
                                "Caught exception in \"xConflict\" method: {0}",
                                e)); /* throw */
                        }
                    }
                    catch
                    {
                        // do nothing.
                    }
                }

                return SQLiteChangeSetConflictResult.Abort;
            });

            SQLiteConnectionHandle handle = SQLiteConnection.GetNativeHandle(
                connection);

            SQLiteErrorCode rc = UnsafeNativeMethods.sqlite3changeset_apply_strm(
                handle, new SQLiteStreamAdapter(stream, flags).xInput,
                IntPtr.Zero, xFilter, xConflict, IntPtr.Zero);

            if (rc != SQLiteErrorCode.Ok)
                throw new SQLiteException(rc, "sqlite3changeset_apply_strm");
        }
        #endregion

        ///////////////////////////////////////////////////////////////////////

        #region IDisposable Members
        public void Dispose()
        {
................................................................................
    #region SQLiteMemoryChangeSet Class
    public sealed class SQLiteMemoryChangeSet :
        ISQLiteChangeSet, IEnumerable<ISQLiteChangeSetMetadataItem>,
        IDisposable
    {
        #region Private Data
        private byte[] rawData;


        private bool? isPatchSet;
        #endregion

        ///////////////////////////////////////////////////////////////////////

        #region Private Constructors
        internal SQLiteMemoryChangeSet(
            byte[] rawData,


            bool? isPatchSet
            )
        {
            this.rawData = rawData;


            this.isPatchSet = isPatchSet;
        }
        #endregion

        ///////////////////////////////////////////////////////////////////////

        #region ISQLiteChangeSet Members
................................................................................
            ISQLiteChangeSet changeSet
            )
        {
            CheckDisposed();

            throw new NotImplementedException();
        }











































































































        #endregion

        ///////////////////////////////////////////////////////////////////////

        #region IEnumerable<ISQLiteChangeSetMetadataItem> Members
        public IEnumerator<ISQLiteChangeSetMetadataItem> GetEnumerator()
        {
................................................................................
    #region SQLiteStreamChangeSet Class
    public sealed class SQLiteStreamChangeSet :
        ISQLiteChangeSet, IEnumerable<ISQLiteChangeSetMetadataItem>,
        IDisposable
    {
        #region Private Data
        private Stream stream;

        private SQLiteConnectionFlags flags;
        private bool? isPatchSet;
        #endregion

        ///////////////////////////////////////////////////////////////////////

        #region Private Constructors
        internal SQLiteStreamChangeSet(
            Stream stream,

            SQLiteConnectionFlags flags,
            bool? isPatchSet
            )
        {
            this.stream = stream;

            this.flags = flags;
            this.isPatchSet = isPatchSet;
        }
        #endregion

        ///////////////////////////////////////////////////////////////////////

................................................................................
            ISQLiteChangeSet changeSet
            )
        {
            CheckDisposed();

            throw new NotImplementedException();
        }



































































































        #endregion

        ///////////////////////////////////////////////////////////////////////

        #region IEnumerable<ISQLiteChangeSetMetadataItem> Members
        public IEnumerator<ISQLiteChangeSetMetadataItem> GetEnumerator()
        {
................................................................................
        #endregion
    }
    #endregion

    ///////////////////////////////////////////////////////////////////////////

    #region SQLiteChangeSetMetadataItem Class
    public sealed class SQLiteChangeSetMetadataItem
            : ISQLiteChangeSetMetadataItem, IDisposable
    {
        #region Private Data
        private IntPtr iterator;
        #endregion

        ///////////////////////////////////////////////////////////////////////








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    #region Session Extension Interfaces
    public interface ISQLiteChangeSet
    {
        bool? IsPatchSet { get; }

        ISQLiteChangeSet Invert();
        ISQLiteChangeSet CombineWith(ISQLiteChangeSet changeSet);

        void Apply(
            SessionConflictCallback conflictCallback,
            object clientData
        );

        void Apply(
            SessionConflictCallback conflictCallback,
            SessionTableFilterCallback tableFilterCallback,
            object clientData
        );
    }

    ///////////////////////////////////////////////////////////////////////////

    public interface ISQLiteChangeGroup
    {
        void AddChangeSet(byte[] rawData);
................................................................................
        void CreatePatchSet(ref byte[] rawData);
        void CreatePatchSet(Stream stream);

        void LoadDifferencesFromTable(
            string fromDatabaseName,
            string tableName
        );













    }
    #endregion

    ///////////////////////////////////////////////////////////////////////////

    #region SQLiteChangeSetIterator Class
    internal sealed class SQLiteChangeSetIterator : IDisposable
................................................................................
                if (pError != IntPtr.Zero)
                {
                    SQLiteMemory.Free(pError);
                    pError = IntPtr.Zero;
                }
            }
        }






















































































































































        #endregion

        ///////////////////////////////////////////////////////////////////////

        #region IDisposable Members
        public void Dispose()
        {
................................................................................
    #region SQLiteMemoryChangeSet Class
    public sealed class SQLiteMemoryChangeSet :
        ISQLiteChangeSet, IEnumerable<ISQLiteChangeSetMetadataItem>,
        IDisposable
    {
        #region Private Data
        private byte[] rawData;
        private SQLiteConnectionHandle handle;
        private SQLiteConnectionFlags flags;
        private bool? isPatchSet;
        #endregion

        ///////////////////////////////////////////////////////////////////////

        #region Private Constructors
        internal SQLiteMemoryChangeSet(
            byte[] rawData,
            SQLiteConnectionHandle handle,
            SQLiteConnectionFlags flags,
            bool? isPatchSet
            )
        {
            this.rawData = rawData;
            this.handle= handle;
            this.flags = flags;
            this.isPatchSet = isPatchSet;
        }
        #endregion

        ///////////////////////////////////////////////////////////////////////

        #region ISQLiteChangeSet Members
................................................................................
            ISQLiteChangeSet changeSet
            )
        {
            CheckDisposed();

            throw new NotImplementedException();
        }

        ///////////////////////////////////////////////////////////////////////

        public void Apply(
            SessionConflictCallback conflictCallback,
            object clientData
            )
        {
            CheckDisposed();

            Apply(conflictCallback, null, clientData);
        }

        ///////////////////////////////////////////////////////////////////////

        public void Apply(
            SessionConflictCallback conflictCallback,
            SessionTableFilterCallback tableFilterCallback,
            object clientData
            )
        {
            if (conflictCallback == null)
                throw new ArgumentNullException("conflictCallback");

            CheckDisposed();

            UnsafeNativeMethods.xSessionFilter xFilter = null;

            if (tableFilterCallback != null)
            {
                xFilter = new UnsafeNativeMethods.xSessionFilter(
                    delegate(IntPtr context, byte[] tblName)
                {
                    try
                    {
                        string name = SQLiteString.GetStringFromUtf8Bytes(
                            tblName);

                        return tableFilterCallback(clientData, name) ? 1 : 0;
                    }
                    catch (Exception e)
                    {
                        try
                        {
                            if ((flags & SQLiteConnectionFlags.LogCallbackException) ==
                                    SQLiteConnectionFlags.LogCallbackException)
                            {
                                SQLiteLog.LogMessage(SQLiteBase.COR_E_EXCEPTION,
                                    HelperMethods.StringFormat(CultureInfo.CurrentCulture,
                                    "Caught exception in \"xFilter\" method: {0}",
                                    e)); /* throw */
                            }
                        }
                        catch
                        {
                            // do nothing.
                        }
                    }

                    return 0;
                });
            }

            UnsafeNativeMethods.xSessionConflict xConflict;

            xConflict = new UnsafeNativeMethods.xSessionConflict(
                delegate(IntPtr context,
                         SQLiteChangeSetConflictType type,
                         IntPtr iterator)
            {
                ISQLiteChangeSetMetadataItem item = null;

                try
                {
                    return conflictCallback(clientData, type, item);
                }
                catch (Exception e)
                {
                    try
                    {
                        if ((flags & SQLiteConnectionFlags.LogCallbackException) ==
                                SQLiteConnectionFlags.LogCallbackException)
                        {
                            SQLiteLog.LogMessage(SQLiteBase.COR_E_EXCEPTION,
                                HelperMethods.StringFormat(CultureInfo.CurrentCulture,
                                "Caught exception in \"xConflict\" method: {0}",
                                e)); /* throw */
                        }
                    }
                    catch
                    {
                        // do nothing.
                    }
                }

                return SQLiteChangeSetConflictResult.Abort;
            });

            int nData = 0;
            IntPtr pData = IntPtr.Zero;

            SQLiteErrorCode rc = UnsafeNativeMethods.sqlite3changeset_apply(
                handle, nData, pData, xFilter, xConflict, IntPtr.Zero);

            if (rc != SQLiteErrorCode.Ok)
                throw new SQLiteException(rc, "sqlite3changeset_apply");
        }
        #endregion

        ///////////////////////////////////////////////////////////////////////

        #region IEnumerable<ISQLiteChangeSetMetadataItem> Members
        public IEnumerator<ISQLiteChangeSetMetadataItem> GetEnumerator()
        {
................................................................................
    #region SQLiteStreamChangeSet Class
    public sealed class SQLiteStreamChangeSet :
        ISQLiteChangeSet, IEnumerable<ISQLiteChangeSetMetadataItem>,
        IDisposable
    {
        #region Private Data
        private Stream stream;
        private SQLiteConnectionHandle handle;
        private SQLiteConnectionFlags flags;
        private bool? isPatchSet;
        #endregion

        ///////////////////////////////////////////////////////////////////////

        #region Private Constructors
        internal SQLiteStreamChangeSet(
            Stream stream,
            SQLiteConnectionHandle handle,
            SQLiteConnectionFlags flags,
            bool? isPatchSet
            )
        {
            this.stream = stream;
            this.handle = handle;
            this.flags = flags;
            this.isPatchSet = isPatchSet;
        }
        #endregion

        ///////////////////////////////////////////////////////////////////////

................................................................................
            ISQLiteChangeSet changeSet
            )
        {
            CheckDisposed();

            throw new NotImplementedException();
        }

        ///////////////////////////////////////////////////////////////////////

        public void Apply(
            SessionConflictCallback conflictCallback,
            object clientData
            )
        {
            CheckDisposed();

            throw new NotImplementedException();
        }

        ///////////////////////////////////////////////////////////////////////

        public void Apply(
            SessionConflictCallback conflictCallback,
            SessionTableFilterCallback tableFilterCallback,
            object clientData
            )
        {
            CheckDisposed();

            UnsafeNativeMethods.xSessionFilter xFilter;

            xFilter = new UnsafeNativeMethods.xSessionFilter(
                delegate(IntPtr context, byte[] tblName)
            {
                try
                {
                    string name = SQLiteString.GetStringFromUtf8Bytes(
                        tblName);

                    return tableFilterCallback(clientData, name) ? 1 : 0;
                }
                catch (Exception e)
                {
                    try
                    {
                        if ((flags & SQLiteConnectionFlags.LogCallbackException) ==
                                SQLiteConnectionFlags.LogCallbackException)
                        {
                            SQLiteLog.LogMessage(SQLiteBase.COR_E_EXCEPTION,
                                HelperMethods.StringFormat(CultureInfo.CurrentCulture,
                                "Caught exception in \"xFilter\" method: {0}",
                                e)); /* throw */
                        }
                    }
                    catch
                    {
                        // do nothing.
                    }
                }

                return 0;
            });

            UnsafeNativeMethods.xSessionConflict xConflict;

            xConflict = new UnsafeNativeMethods.xSessionConflict(
                delegate(IntPtr context,
                         SQLiteChangeSetConflictType type,
                         IntPtr iterator)
            {
                ISQLiteChangeSetMetadataItem item = null;

                try
                {
                    return conflictCallback(clientData, type, item);
                }
                catch (Exception e)
                {
                    try
                    {
                        if ((flags & SQLiteConnectionFlags.LogCallbackException) ==
                                SQLiteConnectionFlags.LogCallbackException)
                        {
                            SQLiteLog.LogMessage(SQLiteBase.COR_E_EXCEPTION,
                                HelperMethods.StringFormat(CultureInfo.CurrentCulture,
                                "Caught exception in \"xConflict\" method: {0}",
                                e)); /* throw */
                        }
                    }
                    catch
                    {
                        // do nothing.
                    }
                }

                return SQLiteChangeSetConflictResult.Abort;
            });

            SQLiteErrorCode rc = UnsafeNativeMethods.sqlite3changeset_apply_strm(
                handle, new SQLiteStreamAdapter(stream, flags).xInput,
                IntPtr.Zero, xFilter, xConflict, IntPtr.Zero);

            if (rc != SQLiteErrorCode.Ok)
                throw new SQLiteException(rc, "sqlite3changeset_apply_strm");
        }
        #endregion

        ///////////////////////////////////////////////////////////////////////

        #region IEnumerable<ISQLiteChangeSetMetadataItem> Members
        public IEnumerator<ISQLiteChangeSetMetadataItem> GetEnumerator()
        {
................................................................................
        #endregion
    }
    #endregion

    ///////////////////////////////////////////////////////////////////////////

    #region SQLiteChangeSetMetadataItem Class
    public sealed class SQLiteChangeSetMetadataItem :
        ISQLiteChangeSetMetadataItem, IDisposable
    {
        #region Private Data
        private IntPtr iterator;
        #endregion

        ///////////////////////////////////////////////////////////////////////