/********************************************************
* ADO.NET 2.0 Data Provider for SQLite Version 3.X
* Written by Robert Simpson (robert@blackcastlesoft.com)
*
* Released to the public domain, use at your own risk!
********************************************************/
namespace System.Data.SQLite
{
using System;
#if !PLATFORM_COMPACTFRAMEWORK
using System.Runtime.InteropServices;
#endif
/// <summary>
/// This internal class provides the foundation of SQLite support. It defines all the abstract members needed to implement
/// a SQLite data provider, and inherits from SQLiteConvert which allows for simple translations of string to and from SQLite.
/// </summary>
internal abstract class SQLiteBase : SQLiteConvert, IDisposable
{
internal SQLiteBase(SQLiteDateFormats fmt, DateTimeKind kind)
: base(fmt, kind) { }
/// <summary>
/// Returns a string representing the active version of SQLite
/// </summary>
internal abstract string Version { get; }
/// <summary>
/// Returns the rowid of the most recent successful INSERT into the database from this connection.
/// </summary>
internal abstract long LastInsertRowId { get; }
/// <summary>
/// Returns the number of changes the last executing insert/update caused.
/// </summary>
internal abstract int Changes { get; }
/// <summary>
/// Returns the amount of memory (in bytes) currently in use by the SQLite core library. This is not really a per-connection
/// value, it is global to the process.
/// </summary>
internal abstract long MemoryUsed { get; }
/// <summary>
/// Returns the maximum amount of memory (in bytes) used by the SQLite core library since the high-water mark was last reset.
/// This is not really a per-connection value, it is global to the process.
/// </summary>
internal abstract long MemoryHighwater { get; }
/// <summary>
/// Sets the status of the memory usage tracking subsystem in the SQLite core library. By default, this is enabled.
/// If this is disabled, memory usage tracking will not be performed. This is not really a per-connection value, it is
/// global to the process.
/// </summary>
/// <param name="value">Non-zero to enable memory usage tracking, zero otherwise.</param>
/// <returns>A standard SQLite return code (i.e. zero for success and non-zero for failure).</returns>
internal abstract SQLiteErrorCode SetMemoryStatus(bool value);
/// <summary>
/// Shutdown the SQLite engine so that it can be restarted with different config options.
/// We depend on auto initialization to recover.
/// </summary>
internal abstract SQLiteErrorCode Shutdown();
/// <summary>
/// Returns non-zero if a database connection is open.
/// </summary>
/// <returns></returns>
internal abstract bool IsOpen();
/// <summary>
/// Opens a database.
/// </summary>
/// <remarks>
/// Implementers should call SQLiteFunction.BindFunctions() and save the array after opening a connection
/// to bind all attributed user-defined functions and collating sequences to the new connection.
/// </remarks>
/// <param name="strFilename">The filename of the database to open. SQLite automatically creates it if it doesn't exist.</param>
/// <param name="connectionFlags">The flags associated with the parent connection object</param>
/// <param name="openFlags">The open flags to use when creating the connection</param>
/// <param name="maxPoolSize">The maximum size of the pool for the given filename</param>
/// <param name="usePool">If true, the connection can be pulled from the connection pool</param>
internal abstract void Open(string strFilename, SQLiteConnectionFlags connectionFlags, SQLiteOpenFlagsEnum openFlags, int maxPoolSize, bool usePool);
/// <summary>
/// Closes the currently-open database.
/// </summary>
/// <remarks>
/// After the database has been closed implemeters should call SQLiteFunction.UnbindFunctions() to deallocate all interop allocated
/// memory associated with the user-defined functions and collating sequences tied to the closed connection.
/// </remarks>
internal abstract void Close();
/// <summary>
/// Sets the busy timeout on the connection. SQLiteCommand will call this before executing any command.
/// </summary>
/// <param name="nTimeoutMS">The number of milliseconds to wait before returning SQLITE_BUSY</param>
internal abstract void SetTimeout(int nTimeoutMS);
/// <summary>
/// Returns the text of the last error issued by SQLite
/// </summary>
/// <returns></returns>
internal abstract string GetLastError();
/// <summary>
/// When pooling is enabled, force this connection to be disposed rather than returned to the pool
/// </summary>
internal abstract void ClearPool();
/// <summary>
/// When pooling is enabled, returns the number of pool entries matching the current file name.
/// </summary>
/// <returns>The number of pool entries matching the current file name.</returns>
internal abstract int CountPool();
/// <summary>
/// Prepares a SQL statement for execution.
/// </summary>
/// <param name="cnn">The source connection preparing the command. Can be null for any caller except LINQ</param>
/// <param name="strSql">The SQL command text to prepare</param>
/// <param name="previous">The previous statement in a multi-statement command, or null if no previous statement exists</param>
/// <param name="timeoutMS">The timeout to wait before aborting the prepare</param>
/// <param name="strRemain">The remainder of the statement that was not processed. Each call to prepare parses the
/// SQL up to to either the end of the text or to the first semi-colon delimiter. The remaining text is returned
/// here for a subsequent call to Prepare() until all the text has been processed.</param>
/// <returns>Returns an initialized SQLiteStatement.</returns>
internal abstract SQLiteStatement Prepare(SQLiteConnection cnn, string strSql, SQLiteStatement previous, uint timeoutMS, out string strRemain);
/// <summary>
/// Steps through a prepared statement.
/// </summary>
/// <param name="stmt">The SQLiteStatement to step through</param>
/// <returns>True if a row was returned, False if not.</returns>
internal abstract bool Step(SQLiteStatement stmt);
/// <summary>
/// Resets a prepared statement so it can be executed again. If the error returned is SQLITE_SCHEMA,
/// transparently attempt to rebuild the SQL statement and throw an error if that was not possible.
/// </summary>
/// <param name="stmt">The statement to reset</param>
/// <returns>Returns -1 if the schema changed while resetting, 0 if the reset was sucessful or 6 (SQLITE_LOCKED) if the reset failed due to a lock</returns>
internal abstract SQLiteErrorCode Reset(SQLiteStatement stmt);
internal abstract void Cancel();
internal abstract void Bind_Double(SQLiteStatement stmt, SQLiteConnectionFlags flags, int index, double value);
internal abstract void Bind_Int32(SQLiteStatement stmt, SQLiteConnectionFlags flags, int index, Int32 value);
internal abstract void Bind_UInt32(SQLiteStatement stmt, SQLiteConnectionFlags flags, int index, UInt32 value);
internal abstract void Bind_Int64(SQLiteStatement stmt, SQLiteConnectionFlags flags, int index, Int64 value);
internal abstract void Bind_UInt64(SQLiteStatement stmt, SQLiteConnectionFlags flags, int index, UInt64 value);
internal abstract void Bind_Text(SQLiteStatement stmt, SQLiteConnectionFlags flags, int index, string value);
internal abstract void Bind_Blob(SQLiteStatement stmt, SQLiteConnectionFlags flags, int index, byte[] blobData);
internal abstract void Bind_DateTime(SQLiteStatement stmt, SQLiteConnectionFlags flags, int index, DateTime dt);
internal abstract void Bind_Null(SQLiteStatement stmt, SQLiteConnectionFlags flags, int index);
internal abstract int Bind_ParamCount(SQLiteStatement stmt, SQLiteConnectionFlags flags);
internal abstract string Bind_ParamName(SQLiteStatement stmt, SQLiteConnectionFlags flags, int index);
internal abstract int Bind_ParamIndex(SQLiteStatement stmt, SQLiteConnectionFlags flags, string paramName);
internal abstract int ColumnCount(SQLiteStatement stmt);
internal abstract string ColumnName(SQLiteStatement stmt, int index);
internal abstract TypeAffinity ColumnAffinity(SQLiteStatement stmt, int index);
internal abstract string ColumnType(SQLiteStatement stmt, int index, out TypeAffinity nAffinity);
internal abstract int ColumnIndex(SQLiteStatement stmt, string columnName);
internal abstract string ColumnOriginalName(SQLiteStatement stmt, int index);
internal abstract string ColumnDatabaseName(SQLiteStatement stmt, int index);
internal abstract string ColumnTableName(SQLiteStatement stmt, int index);
internal abstract void ColumnMetaData(string dataBase, string table, string column, out string dataType, out string collateSequence, out bool notNull, out bool primaryKey, out bool autoIncrement);
internal abstract void GetIndexColumnExtendedInfo(string database, string index, string column, out int sortMode, out int onError, out string collationSequence);
internal abstract double GetDouble(SQLiteStatement stmt, int index);
internal abstract Int32 GetInt32(SQLiteStatement stmt, int index);
internal abstract Int64 GetInt64(SQLiteStatement stmt, int index);
internal abstract string GetText(SQLiteStatement stmt, int index);
internal abstract long GetBytes(SQLiteStatement stmt, int index, int nDataoffset, byte[] bDest, int nStart, int nLength);
internal abstract long GetChars(SQLiteStatement stmt, int index, int nDataoffset, char[] bDest, int nStart, int nLength);
internal abstract DateTime GetDateTime(SQLiteStatement stmt, int index);
internal abstract bool IsNull(SQLiteStatement stmt, int index);
internal abstract void CreateCollation(string strCollation, SQLiteCollation func, SQLiteCollation func16);
internal abstract void CreateFunction(string strFunction, int nArgs, bool needCollSeq, SQLiteCallback func, SQLiteCallback funcstep, SQLiteFinalCallback funcfinal);
internal abstract CollationSequence GetCollationSequence(SQLiteFunction func, IntPtr context);
internal abstract int ContextCollateCompare(CollationEncodingEnum enc, IntPtr context, string s1, string s2);
internal abstract int ContextCollateCompare(CollationEncodingEnum enc, IntPtr context, char[] c1, char[] c2);
internal abstract int AggregateCount(IntPtr context);
internal abstract IntPtr AggregateContext(IntPtr context);
internal abstract long GetParamValueBytes(IntPtr ptr, int nDataOffset, byte[] bDest, int nStart, int nLength);
internal abstract double GetParamValueDouble(IntPtr ptr);
internal abstract int GetParamValueInt32(IntPtr ptr);
internal abstract Int64 GetParamValueInt64(IntPtr ptr);
internal abstract string GetParamValueText(IntPtr ptr);
internal abstract TypeAffinity GetParamValueType(IntPtr ptr);
internal abstract void ReturnBlob(IntPtr context, byte[] value);
internal abstract void ReturnDouble(IntPtr context, double value);
internal abstract void ReturnError(IntPtr context, string value);
internal abstract void ReturnInt32(IntPtr context, Int32 value);
internal abstract void ReturnInt64(IntPtr context, Int64 value);
internal abstract void ReturnNull(IntPtr context);
internal abstract void ReturnText(IntPtr context, string value);
/// <summary>
/// Enables or disabled extension loading by SQLite.
/// </summary>
/// <param name="bOnOff">
/// True to enable loading of extensions, false to disable.
/// </param>
internal abstract void SetLoadExtension(bool bOnOff);
/// <summary>
/// Loads a SQLite extension library from the named file.
/// </summary>
/// <param name="fileName">
/// The name of the dynamic link library file containing the extension.
/// </param>
/// <param name="procName">
/// The name of the exported function used to initialize the extension.
/// If null, the default "sqlite3_extension_init" will be used.
/// </param>
internal abstract void LoadExtension(string fileName, string procName);
/// <summary>
/// Enables or disabled extened result codes returned by SQLite
/// </summary>
/// <param name="bOnOff">true to enable extended result codes, false to disable.</param>
/// <returns></returns>
internal abstract void SetExtendedResultCodes(bool bOnOff);
/// <summary>
/// Returns the numeric result code for the most recent failed SQLite API call
/// associated with the database connection.
/// </summary>
/// <returns>Result code</returns>
internal abstract SQLiteErrorCode ResultCode();
/// <summary>
/// Returns the extended numeric result code for the most recent failed SQLite API call
/// associated with the database connection.
/// </summary>
/// <returns>Extended result code</returns>
internal abstract SQLiteErrorCode ExtendedResultCode();
/// <summary>
/// Add a log message via the SQLite sqlite3_log interface.
/// </summary>
/// <param name="iErrCode">Error code to be logged with the message.</param>
/// <param name="zMessage">String to be logged. Unlike the SQLite sqlite3_log()
/// interface, this should be pre-formatted. Consider using the
/// String.Format() function.</param>
/// <returns></returns>
internal abstract void LogMessage(int iErrCode, string zMessage);
#if INTEROP_CODEC
internal abstract void SetPassword(byte[] passwordBytes);
internal abstract void ChangePassword(byte[] newPasswordBytes);
#endif
internal abstract void SetUpdateHook(SQLiteUpdateCallback func);
internal abstract void SetCommitHook(SQLiteCommitCallback func);
internal abstract void SetTraceCallback(SQLiteTraceCallback func);
internal abstract void SetRollbackHook(SQLiteRollbackCallback func);
internal abstract SQLiteErrorCode SetLogCallback(SQLiteLogCallback func);
/// <summary>
/// Checks if the SQLite core library has been initialized in the current process.
/// </summary>
/// <returns>
/// Non-zero if the SQLite core library has been initialized in the current process,
/// zero otherwise.
/// </returns>
internal abstract bool IsInitialized();
internal abstract int GetCursorForTable(SQLiteStatement stmt, int database, int rootPage);
internal abstract long GetRowIdForCursor(SQLiteStatement stmt, int cursor);
internal abstract object GetValue(SQLiteStatement stmt, int index, SQLiteType typ);
internal abstract bool AutoCommit
{
get;
}
internal abstract SQLiteErrorCode FileControl(string zDbName, int op, IntPtr pArg);
/// <summary>
/// Creates a new SQLite backup object based on the provided destination
/// database connection. The source database connection is the one
/// associated with this object. The source and destination database
/// connections cannot be the same.
/// </summary>
/// <param name="destCnn">The destination database connection.</param>
/// <param name="destName">The destination database name.</param>
/// <param name="sourceName">The source database name.</param>
/// <returns>The newly created backup object.</returns>
internal abstract SQLiteBackup InitializeBackup(
SQLiteConnection destCnn, string destName,
string sourceName);
/// <summary>
/// Copies up to N pages from the source database to the destination
/// database associated with the specified backup object.
/// </summary>
/// <param name="backup">The backup object to use.</param>
/// <param name="nPage">
/// The number of pages to copy or negative to copy all remaining pages.
/// </param>
/// <param name="retry">
/// Set to true if the operation needs to be retried due to database
/// locking issues.
/// </param>
/// <returns>
/// True if there are more pages to be copied, false otherwise.
/// </returns>
internal abstract bool StepBackup(SQLiteBackup backup, int nPage, out bool retry);
/// <summary>
/// Returns the number of pages remaining to be copied from the source
/// database to the destination database associated with the specified
/// backup object.
/// </summary>
/// <param name="backup">The backup object to check.</param>
/// <returns>The number of pages remaining to be copied.</returns>
internal abstract int RemainingBackup(SQLiteBackup backup);
/// <summary>
/// Returns the total number of pages in the source database associated
/// with the specified backup object.
/// </summary>
/// <param name="backup">The backup object to check.</param>
/// <returns>The total number of pages in the source database.</returns>
internal abstract int PageCountBackup(SQLiteBackup backup);
/// <summary>
/// Destroys the backup object, rolling back any backup that may be in
/// progess.
/// </summary>
/// <param name="backup">The backup object to destroy.</param>
internal abstract void FinishBackup(SQLiteBackup backup);
///////////////////////////////////////////////////////////////////////////////////////////////
#region IDisposable Members
public void Dispose()
{
Dispose(true);
GC.SuppressFinalize(this);
}
#endregion
///////////////////////////////////////////////////////////////////////////////////////////////
#region IDisposable "Pattern" Members
private bool disposed;
private void CheckDisposed() /* throw */
{
#if THROW_ON_DISPOSED
if (disposed)
throw new ObjectDisposedException(typeof(SQLiteBase).Name);
#endif
}
///////////////////////////////////////////////////////////////////////////////////////////////
protected virtual void Dispose(bool disposing)
{
if (!disposed)
{
//if (disposing)
//{
// ////////////////////////////////////
// // dispose managed resources here...
// ////////////////////////////////////
//}
//////////////////////////////////////
// release unmanaged resources here...
//////////////////////////////////////
disposed = true;
}
}
#endregion
///////////////////////////////////////////////////////////////////////////////////////////////
#region Destructor
~SQLiteBase()
{
Dispose(false);
}
#endregion
///////////////////////////////////////////////////////////////////////////////////////////////
// These statics are here for lack of a better place to put them.
// They exist here because they are called during the finalization of
// a SQLiteStatementHandle, SQLiteConnectionHandle, and SQLiteFunctionCookieHandle.
// Therefore these functions have to be static, and have to be low-level.
///////////////////////////////////////////////////////////////////////////////////////////////
private static string[] _errorMessages = {
/* SQLITE_OK */ "not an error",
/* SQLITE_ERROR */ "SQL logic error or missing database",
/* SQLITE_INTERNAL */ "internal logic error",
/* SQLITE_PERM */ "access permission denied",
/* SQLITE_ABORT */ "callback requested query abort",
/* SQLITE_BUSY */ "database is locked",
/* SQLITE_LOCKED */ "database table is locked",
/* SQLITE_NOMEM */ "out of memory",
/* SQLITE_READONLY */ "attempt to write a readonly database",
/* SQLITE_INTERRUPT */ "interrupted",
/* SQLITE_IOERR */ "disk I/O error",
/* SQLITE_CORRUPT */ "database disk image is malformed",
/* SQLITE_NOTFOUND */ "unknown operation",
/* SQLITE_FULL */ "database or disk is full",
/* SQLITE_CANTOPEN */ "unable to open database file",
/* SQLITE_PROTOCOL */ "locking protocol",
/* SQLITE_EMPTY */ "table contains no data",
/* SQLITE_SCHEMA */ "database schema has changed",
/* SQLITE_TOOBIG */ "string or blob too big",
/* SQLITE_CONSTRAINT */ "constraint failed",
/* SQLITE_MISMATCH */ "datatype mismatch",
/* SQLITE_MISUSE */ "library routine called out of sequence",
/* SQLITE_NOLFS */ "large file support is disabled",
/* SQLITE_AUTH */ "authorization denied",
/* SQLITE_FORMAT */ "auxiliary database format error",
/* SQLITE_RANGE */ "bind or column index out of range",
/* SQLITE_NOTADB */ "file is encrypted or is not a database"
};
///////////////////////////////////////////////////////////////////////////////////////////////
/// <summary>
/// Returns the error message for the specified SQLite return code using
/// the internal static lookup table.
/// </summary>
/// <param name="rc">The SQLite return code.</param>
/// <returns>The error message or null if it cannot be found.</returns>
private static string FallbackGetErrorString(SQLiteErrorCode rc)
{
if (_errorMessages == null)
return null;
int index = (int)rc;
if ((index < 0) || (index >= _errorMessages.Length))
index = (int)SQLiteErrorCode.Error; /* Make into generic error. */
return _errorMessages[index];
}
/// <summary>
/// Returns the error message for the specified SQLite return code using
/// the sqlite3_errstr() function, falling back to the internal lookup
/// table if necessary.
/// </summary>
/// <param name="rc">The SQLite return code.</param>
/// <returns>The error message or null if it cannot be found.</returns>
internal static string GetErrorString(SQLiteErrorCode rc)
{
try
{
IntPtr ptr = UnsafeNativeMethods.sqlite3_errstr(rc);
if (ptr != IntPtr.Zero)
{
#if !PLATFORM_COMPACTFRAMEWORK
return Marshal.PtrToStringAnsi(ptr);
#else
return UTF8ToString(ptr, -1);
#endif
}
}
catch (EntryPointNotFoundException)
{
// do nothing.
}
return FallbackGetErrorString(rc);
}
internal static string GetLastError(SQLiteConnectionHandle hdl, IntPtr db)
{
if ((hdl == null) || (db == IntPtr.Zero))
return "null connection or database handle";
#if PLATFORM_COMPACTFRAMEWORK
lock (hdl.syncRoot)
#else
lock (hdl)
#endif
{
if (hdl.IsClosed || hdl.IsInvalid)
return "closed or invalid connection handle";
#if !SQLITE_STANDARD
int len;
return UTF8ToString(UnsafeNativeMethods.sqlite3_errmsg_interop(db, out len), len);
#else
return UTF8ToString(UnsafeNativeMethods.sqlite3_errmsg(db), -1);
#endif
}
#pragma warning disable 162
GC.KeepAlive(hdl); /* NOTE: Unreachable code. */
#pragma warning restore 162
}
internal static void FinishBackup(SQLiteConnectionHandle hdl, IntPtr backup)
{
if ((hdl == null) || (backup == IntPtr.Zero)) return;
#if PLATFORM_COMPACTFRAMEWORK
lock (hdl.syncRoot)
#else
lock (hdl)
#endif
{
SQLiteErrorCode n = UnsafeNativeMethods.sqlite3_backup_finish(backup);
if (n != SQLiteErrorCode.Ok) throw new SQLiteException(n, null);
}
}
internal static void FinalizeStatement(SQLiteConnectionHandle hdl, IntPtr stmt)
{
if ((hdl == null) || (stmt == IntPtr.Zero)) return;
#if PLATFORM_COMPACTFRAMEWORK
lock (hdl.syncRoot)
#else
lock (hdl)
#endif
{
#if !SQLITE_STANDARD
SQLiteErrorCode n = UnsafeNativeMethods.sqlite3_finalize_interop(stmt);
#else
SQLiteErrorCode n = UnsafeNativeMethods.sqlite3_finalize(stmt);
#endif
if (n != SQLiteErrorCode.Ok) throw new SQLiteException(n, null);
}
}
internal static void CloseConnection(SQLiteConnectionHandle hdl, IntPtr db)
{
if ((hdl == null) || (db == IntPtr.Zero)) return;
#if PLATFORM_COMPACTFRAMEWORK
lock (hdl.syncRoot)
#else
lock (hdl)
#endif
{
#if !SQLITE_STANDARD
SQLiteErrorCode n = UnsafeNativeMethods.sqlite3_close_interop(db);
#else
ResetConnection(hdl, db);
SQLiteErrorCode n;
try
{
n = UnsafeNativeMethods.sqlite3_close_v2(db);
}
catch (EntryPointNotFoundException)
{
n = UnsafeNativeMethods.sqlite3_close(db);
}
#endif
if (n != SQLiteErrorCode.Ok) throw new SQLiteException(n, GetLastError(hdl, db));
}
}
internal static void ResetConnection(SQLiteConnectionHandle hdl, IntPtr db)
{
if ((hdl == null) || (db == IntPtr.Zero)) return;
if (hdl.IsClosed || hdl.IsInvalid) return;
#if PLATFORM_COMPACTFRAMEWORK
lock (hdl.syncRoot)
#else
lock (hdl)
#endif
{
IntPtr stmt = IntPtr.Zero;
SQLiteErrorCode n;
do
{
stmt = UnsafeNativeMethods.sqlite3_next_stmt(db, stmt);
if (stmt != IntPtr.Zero)
{
#if !SQLITE_STANDARD
n = UnsafeNativeMethods.sqlite3_reset_interop(stmt);
#else
n = UnsafeNativeMethods.sqlite3_reset(stmt);
#endif
}
} while (stmt != IntPtr.Zero);
if (IsAutocommit(hdl, db) == false) // a transaction is pending on the connection
{
n = UnsafeNativeMethods.sqlite3_exec(db, ToUTF8("ROLLBACK"), IntPtr.Zero, IntPtr.Zero, out stmt);
if (n != SQLiteErrorCode.Ok) throw new SQLiteException(n, GetLastError(hdl, db));
}
}
GC.KeepAlive(hdl);
}
internal static bool IsAutocommit(SQLiteConnectionHandle hdl, IntPtr db)
{
if (db == IntPtr.Zero) return false;
if (hdl.IsClosed || hdl.IsInvalid) return false;
#if PLATFORM_COMPACTFRAMEWORK
lock (hdl.syncRoot)
#else
lock (hdl)
#endif
{
return (UnsafeNativeMethods.sqlite3_get_autocommit(db) == 1);
}
#pragma warning disable 162
GC.KeepAlive(hdl); /* NOTE: Unreachable code. */
#pragma warning restore 162
}
}
internal interface ISQLiteSchemaExtensions
{
void BuildTempSchema(SQLiteConnection cnn);
}
[Flags]
internal enum SQLiteOpenFlagsEnum
{
None = 0,
ReadOnly = 0x01,
ReadWrite = 0x02,
Create = 0x04,
Uri = 0x40,
SharedCache = 0x01000000,
Default = 0x06,
}
/// <summary>
/// The extra behavioral flags that can be applied to a connection.
/// </summary>
[Flags()]
public enum SQLiteConnectionFlags
{
/// <summary>
/// No extra flags.
/// </summary>
None = 0x0,
/// <summary>
/// Enable logging of all SQL statements to be prepared.
/// </summary>
LogPrepare = 0x1,
/// <summary>
/// Enable logging of all bound parameter types and raw values.
/// </summary>
LogPreBind = 0x2,
/// <summary>
/// Enable logging of all bound parameter strongly typed values.
/// </summary>
LogBind = 0x4,
/// <summary>
/// Enable logging of all exceptions caught from user-provided
/// managed code called from native code via delegates.
/// </summary>
LogCallbackException = 0x8,
/// <summary>
/// Enable logging of backup API errors.
/// </summary>
LogBackup = 0x10,
/// <summary>
/// Skip adding the extension functions provided by the native
/// interop assembly.
/// </summary>
NoExtensionFunctions = 0x20,
/// <summary>
/// Enable all logging.
/// </summary>
LogAll = LogPrepare | LogPreBind | LogBind |
LogCallbackException | LogBackup,
/// <summary>
/// The default extra flags for new connections.
/// </summary>
Default = LogCallbackException
}
// These are the options to the internal sqlite3_config call.
internal enum SQLiteConfigOpsEnum
{
SQLITE_CONFIG_NONE = 0, // nil
SQLITE_CONFIG_SINGLETHREAD = 1, // nil
SQLITE_CONFIG_MULTITHREAD = 2, // nil
SQLITE_CONFIG_SERIALIZED = 3, // nil
SQLITE_CONFIG_MALLOC = 4, // sqlite3_mem_methods*
SQLITE_CONFIG_GETMALLOC = 5, // sqlite3_mem_methods*
SQLITE_CONFIG_SCRATCH = 6, // void*, int sz, int N
SQLITE_CONFIG_PAGECACHE = 7, // void*, int sz, int N
SQLITE_CONFIG_HEAP = 8, // void*, int nByte, int min
SQLITE_CONFIG_MEMSTATUS = 9, // boolean
SQLITE_CONFIG_MUTEX = 10, // sqlite3_mutex_methods*
SQLITE_CONFIG_GETMUTEX = 11, // sqlite3_mutex_methods*
// previously SQLITE_CONFIG_CHUNKALLOC 12 which is now unused
SQLITE_CONFIG_LOOKASIDE = 13, // int int
SQLITE_CONFIG_PCACHE = 14, // sqlite3_pcache_methods*
SQLITE_CONFIG_GETPCACHE = 15, // sqlite3_pcache_methods*
SQLITE_CONFIG_LOG = 16, // xFunc, void*
}
}