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Overview
| Comment: | Prevent the SetTableError virtual table helper method from throwing exceptions. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
04900b82e00cd2ee108ae944b3733168 |
| User & Date: | mistachkin 2014-02-07 02:39:59 |
Context
|
2014-02-07
| ||
| 09:21 | Add TypeName_SQLiteProviderServices setting to the example config file. check-in: 14d909f5e7 user: mistachkin tags: trunk | |
| 02:39 | Prevent the SetTableError virtual table helper method from throwing exceptions. check-in: 04900b82e0 user: mistachkin tags: trunk | |
|
2014-02-06
| ||
| 19:58 | Update location of the 'version.html' file on the release procedures doc page. check-in: 1823a28959 user: mistachkin tags: trunk | |
Changes
Changes to System.Data.SQLite/SQLiteModule.cs.
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/// parameter to the various static error handling methods provided
/// by the <see cref="SQLiteModule" /> class.
/// </summary>
private const bool DefaultLogErrors = true;
///////////////////////////////////////////////////////////////////
/// <summary>
/// This is the error message text used when the contained
/// <see cref="SQLiteModule" /> object instance is not available
/// for any reason.
/// </summary>
private const string ModuleNotAvailableErrorMessage =
"native module implementation not available";
................................................................................
/// The value of <see cref="SQLiteErrorCode.Error" />.
/// </returns>
private static SQLiteErrorCode ModuleNotAvailableTableError(
IntPtr pVtab
)
{
SetTableError(null, pVtab, DefaultLogErrors,
ModuleNotAvailableErrorMessage);
return SQLiteErrorCode.Error;
}
///////////////////////////////////////////////////////////////////
/// <summary>
................................................................................
/// The value of <see cref="SQLiteErrorCode.Error" />.
/// </returns>
private static SQLiteErrorCode ModuleNotAvailableCursorError(
IntPtr pCursor
)
{
SetCursorError(null, pCursor, DefaultLogErrors,
ModuleNotAvailableErrorMessage);
return SQLiteErrorCode.Error;
}
#endregion
///////////////////////////////////////////////////////////////////
................................................................................
/// <param name="pVtab">
/// The native pointer to the sqlite3_vtab derived structure.
/// </param>
/// <param name="logErrors">
/// Non-zero if this error message should also be logged using the
/// <see cref="SQLiteLog" /> class.
/// </param>
/// <param name="error">
/// The error message.
/// </param>
/// <returns>
/// Non-zero upon success.
/// </returns>
private static bool SetTableError(
SQLiteModule module,
IntPtr pVtab,
bool logErrors,
string error
)
{
try
{
if (logErrors)
{
................................................................................
}
}
catch
{
// do nothing.
}
if (pVtab == IntPtr.Zero)
return false;
int offset = 0;
offset = SQLiteMarshal.NextOffsetOf(offset, IntPtr.Size,
sizeof(int));
offset = SQLiteMarshal.NextOffsetOf(offset, sizeof(int),
IntPtr.Size);
IntPtr pError = SQLiteMarshal.ReadIntPtr(pVtab, offset);
if (pError != IntPtr.Zero)
{
SQLiteMemory.Free(pError); pError = IntPtr.Zero;
SQLiteMarshal.WriteIntPtr(pVtab, offset, pError);
}
if (error == null)
return true;
bool success = false;
try
{
pError = SQLiteString.Utf8IntPtrFromString(error);
SQLiteMarshal.WriteIntPtr(pVtab, offset, pError);
success = true;
}
finally
{
if (!success && (pError != IntPtr.Zero))
{
SQLiteMemory.Free(pError);
pError = IntPtr.Zero;
}
}
return success;
}
///////////////////////////////////////////////////////////////////////
................................................................................
/// The <see cref="SQLiteVirtualTable" /> object instance used to
/// lookup the native pointer to the sqlite3_vtab derived structure.
/// </param>
/// <param name="logErrors">
/// Non-zero if this error message should also be logged using the
/// <see cref="SQLiteLog" /> class.
/// </param>
/// <param name="error">
/// The error message.
/// </param>
/// <returns>
/// Non-zero upon success.
/// </returns>
private static bool SetTableError(
SQLiteModule module,
SQLiteVirtualTable table,
bool logErrors,
string error
)
{
if (table == null)
return false;
IntPtr pVtab = table.NativeHandle;
if (pVtab == IntPtr.Zero)
return false;
return SetTableError(module, pVtab, logErrors, error);
}
///////////////////////////////////////////////////////////////////////
/// <summary>
/// Arranges for the specified error message to be placed into the
/// zErrMsg field of a sqlite3_vtab derived structure, freeing the
................................................................................
/// used to get the native pointer to the sqlite3_vtab derived
/// structure.
/// </param>
/// <param name="logErrors">
/// Non-zero if this error message should also be logged using the
/// <see cref="SQLiteLog" /> class.
/// </param>
/// <param name="error">
/// The error message.
/// </param>
/// <returns>
/// Non-zero upon success.
/// </returns>
private static bool SetCursorError(
SQLiteModule module,
IntPtr pCursor,
bool logErrors,
string error
)
{
if (pCursor == IntPtr.Zero)
return false;
IntPtr pVtab = TableFromCursor(module, pCursor);
if (pVtab == IntPtr.Zero)
return false;
return SetTableError(module, pVtab, logErrors, error);
}
///////////////////////////////////////////////////////////////////////
/// <summary>
/// Arranges for the specified error message to be placed into the
/// zErrMsg field of a sqlite3_vtab derived structure, freeing the
................................................................................
/// The <see cref="SQLiteVirtualTableCursor" /> object instance used to
/// lookup the native pointer to the sqlite3_vtab derived structure.
/// </param>
/// <param name="logErrors">
/// Non-zero if this error message should also be logged using the
/// <see cref="SQLiteLog" /> class.
/// </param>
/// <param name="error">
/// The error message.
/// </param>
/// <returns>
/// Non-zero upon success.
/// </returns>
private static bool SetCursorError(
SQLiteModule module,
SQLiteVirtualTableCursor cursor,
bool logErrors,
string error
)
{
if (cursor == null)
return false;
IntPtr pCursor = cursor.NativeHandle;
if (pCursor == IntPtr.Zero)
return false;
return SetCursorError(module, pCursor, logErrors, error);
}
#endregion
#endregion
///////////////////////////////////////////////////////////////////////
#region Protected Members
................................................................................
///////////////////////////////////////////////////////////////////////
private bool logExceptions;
/// <summary>
/// Returns or sets a boolean value indicating whether exceptions
/// caught in the
/// <see cref="ISQLiteNativeModule.xDisconnect" /> method,
/// <see cref="ISQLiteNativeModule.xDestroy" /> method, and the
/// <see cref="Dispose()" /> method should be logged using the
/// <see cref="SQLiteLog" /> class.
/// </summary>
protected virtual bool LogExceptionsNoThrow
{
get { return logExceptions; }
set { logExceptions = value; }
}
................................................................................
/// Non-zero upon success.
/// </returns>
protected virtual bool SetTableError(
IntPtr pVtab,
string error
)
{
return SetTableError(this, pVtab, LogErrorsNoThrow, error);
}
///////////////////////////////////////////////////////////////////////
/// <summary>
/// Arranges for the specified error message to be placed into the
/// zErrMsg field of a sqlite3_vtab derived structure, freeing the
................................................................................
/// Non-zero upon success.
/// </returns>
protected virtual bool SetTableError(
SQLiteVirtualTable table,
string error
)
{
return SetTableError(this, table, LogErrorsNoThrow, error);
}
///////////////////////////////////////////////////////////////////////
/// <summary>
/// Arranges for the specified error message to be placed into the
/// zErrMsg field of a sqlite3_vtab derived structure, freeing the
................................................................................
/// Non-zero upon success.
/// </returns>
protected virtual bool SetCursorError(
SQLiteVirtualTableCursor cursor,
string error
)
{
return SetCursorError(this, cursor, LogErrorsNoThrow, error);
}
#endregion
///////////////////////////////////////////////////////////////////////
#region Index Handling Helper Methods
/// <summary>
|
> > > > > > > > > | | > > > > > > > > > > | | | | | > > | | > > | | < < < > > > > > > > > > > > > | | | > > > > > | > > > > > > | > > > > > > | > | > > | | > | > | > |
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/// parameter to the various static error handling methods provided
/// by the <see cref="SQLiteModule" /> class.
/// </summary>
private const bool DefaultLogErrors = true;
///////////////////////////////////////////////////////////////////
/// <summary>
/// This is the value that is always used for the "logExceptions"
/// parameter to the various static error handling methods provided
/// by the <see cref="SQLiteModule" /> class.
/// </summary>
private const bool DefaultLogExceptions = true;
///////////////////////////////////////////////////////////////////
/// <summary>
/// This is the error message text used when the contained
/// <see cref="SQLiteModule" /> object instance is not available
/// for any reason.
/// </summary>
private const string ModuleNotAvailableErrorMessage =
"native module implementation not available";
................................................................................
/// The value of <see cref="SQLiteErrorCode.Error" />.
/// </returns>
private static SQLiteErrorCode ModuleNotAvailableTableError(
IntPtr pVtab
)
{
SetTableError(null, pVtab, DefaultLogErrors,
DefaultLogExceptions, ModuleNotAvailableErrorMessage);
return SQLiteErrorCode.Error;
}
///////////////////////////////////////////////////////////////////
/// <summary>
................................................................................
/// The value of <see cref="SQLiteErrorCode.Error" />.
/// </returns>
private static SQLiteErrorCode ModuleNotAvailableCursorError(
IntPtr pCursor
)
{
SetCursorError(null, pCursor, DefaultLogErrors,
DefaultLogExceptions, ModuleNotAvailableErrorMessage);
return SQLiteErrorCode.Error;
}
#endregion
///////////////////////////////////////////////////////////////////
................................................................................
/// <param name="pVtab">
/// The native pointer to the sqlite3_vtab derived structure.
/// </param>
/// <param name="logErrors">
/// Non-zero if this error message should also be logged using the
/// <see cref="SQLiteLog" /> class.
/// </param>
/// <param name="logExceptions">
/// Non-zero if caught exceptions should be logged using the
/// <see cref="SQLiteLog" /> class.
/// </param>
/// <param name="error">
/// The error message.
/// </param>
/// <returns>
/// Non-zero upon success.
/// </returns>
private static bool SetTableError(
SQLiteModule module,
IntPtr pVtab,
bool logErrors,
bool logExceptions,
string error
)
{
try
{
if (logErrors)
{
................................................................................
}
}
catch
{
// do nothing.
}
bool success = false;
IntPtr pNewError = IntPtr.Zero;
try
{
if (pVtab == IntPtr.Zero)
return false;
int offset = 0;
offset = SQLiteMarshal.NextOffsetOf(offset, IntPtr.Size,
sizeof(int));
offset = SQLiteMarshal.NextOffsetOf(offset, sizeof(int),
IntPtr.Size);
IntPtr pOldError = SQLiteMarshal.ReadIntPtr(pVtab, offset);
if (pOldError != IntPtr.Zero)
{
SQLiteMemory.Free(pOldError); pOldError = IntPtr.Zero;
SQLiteMarshal.WriteIntPtr(pVtab, offset, pOldError);
}
if (error == null)
return true;
pNewError = SQLiteString.Utf8IntPtrFromString(error);
SQLiteMarshal.WriteIntPtr(pVtab, offset, pNewError);
success = true;
}
catch (Exception e) /* NOTE: Must catch ALL. */
{
try
{
if (logExceptions)
{
SQLiteLog.LogMessage(SQLiteBase.COR_E_EXCEPTION,
String.Format(CultureInfo.CurrentCulture,
"Caught exception in \"SetTableError\" method: {0}",
e)); /* throw */
}
}
catch
{
// do nothing.
}
}
finally
{
if (!success && (pNewError != IntPtr.Zero))
{
SQLiteMemory.Free(pNewError);
pNewError = IntPtr.Zero;
}
}
return success;
}
///////////////////////////////////////////////////////////////////////
................................................................................
/// The <see cref="SQLiteVirtualTable" /> object instance used to
/// lookup the native pointer to the sqlite3_vtab derived structure.
/// </param>
/// <param name="logErrors">
/// Non-zero if this error message should also be logged using the
/// <see cref="SQLiteLog" /> class.
/// </param>
/// <param name="logExceptions">
/// Non-zero if caught exceptions should be logged using the
/// <see cref="SQLiteLog" /> class.
/// </param>
/// <param name="error">
/// The error message.
/// </param>
/// <returns>
/// Non-zero upon success.
/// </returns>
private static bool SetTableError(
SQLiteModule module,
SQLiteVirtualTable table,
bool logErrors,
bool logExceptions,
string error
)
{
if (table == null)
return false;
IntPtr pVtab = table.NativeHandle;
if (pVtab == IntPtr.Zero)
return false;
return SetTableError(
module, pVtab, logErrors, logExceptions, error);
}
///////////////////////////////////////////////////////////////////////
/// <summary>
/// Arranges for the specified error message to be placed into the
/// zErrMsg field of a sqlite3_vtab derived structure, freeing the
................................................................................
/// used to get the native pointer to the sqlite3_vtab derived
/// structure.
/// </param>
/// <param name="logErrors">
/// Non-zero if this error message should also be logged using the
/// <see cref="SQLiteLog" /> class.
/// </param>
/// <param name="logExceptions">
/// Non-zero if caught exceptions should be logged using the
/// <see cref="SQLiteLog" /> class.
/// </param>
/// <param name="error">
/// The error message.
/// </param>
/// <returns>
/// Non-zero upon success.
/// </returns>
private static bool SetCursorError(
SQLiteModule module,
IntPtr pCursor,
bool logErrors,
bool logExceptions,
string error
)
{
if (pCursor == IntPtr.Zero)
return false;
IntPtr pVtab = TableFromCursor(module, pCursor);
if (pVtab == IntPtr.Zero)
return false;
return SetTableError(
module, pVtab, logErrors, logExceptions, error);
}
///////////////////////////////////////////////////////////////////////
/// <summary>
/// Arranges for the specified error message to be placed into the
/// zErrMsg field of a sqlite3_vtab derived structure, freeing the
................................................................................
/// The <see cref="SQLiteVirtualTableCursor" /> object instance used to
/// lookup the native pointer to the sqlite3_vtab derived structure.
/// </param>
/// <param name="logErrors">
/// Non-zero if this error message should also be logged using the
/// <see cref="SQLiteLog" /> class.
/// </param>
/// <param name="logExceptions">
/// Non-zero if caught exceptions should be logged using the
/// <see cref="SQLiteLog" /> class.
/// </param>
/// <param name="error">
/// The error message.
/// </param>
/// <returns>
/// Non-zero upon success.
/// </returns>
private static bool SetCursorError(
SQLiteModule module,
SQLiteVirtualTableCursor cursor,
bool logErrors,
bool logExceptions,
string error
)
{
if (cursor == null)
return false;
IntPtr pCursor = cursor.NativeHandle;
if (pCursor == IntPtr.Zero)
return false;
return SetCursorError(
module, pCursor, logErrors, logExceptions, error);
}
#endregion
#endregion
///////////////////////////////////////////////////////////////////////
#region Protected Members
................................................................................
///////////////////////////////////////////////////////////////////////
private bool logExceptions;
/// <summary>
/// Returns or sets a boolean value indicating whether exceptions
/// caught in the
/// <see cref="ISQLiteNativeModule.xDisconnect" /> method,
/// the <see cref="ISQLiteNativeModule.xDestroy" /> method,
/// the <see cref="SetTableError(IntPtr,string)" /> method,
/// the <see cref="SetTableError(SQLiteVirtualTable,string)" /> method,
/// and the <see cref="Dispose()" /> method should be logged using the
/// <see cref="SQLiteLog" /> class.
/// </summary>
protected virtual bool LogExceptionsNoThrow
{
get { return logExceptions; }
set { logExceptions = value; }
}
................................................................................
/// Non-zero upon success.
/// </returns>
protected virtual bool SetTableError(
IntPtr pVtab,
string error
)
{
return SetTableError(
this, pVtab, LogErrorsNoThrow, LogExceptionsNoThrow, error);
}
///////////////////////////////////////////////////////////////////////
/// <summary>
/// Arranges for the specified error message to be placed into the
/// zErrMsg field of a sqlite3_vtab derived structure, freeing the
................................................................................
/// Non-zero upon success.
/// </returns>
protected virtual bool SetTableError(
SQLiteVirtualTable table,
string error
)
{
return SetTableError(
this, table, LogErrorsNoThrow, LogExceptionsNoThrow, error);
}
///////////////////////////////////////////////////////////////////////
/// <summary>
/// Arranges for the specified error message to be placed into the
/// zErrMsg field of a sqlite3_vtab derived structure, freeing the
................................................................................
/// Non-zero upon success.
/// </returns>
protected virtual bool SetCursorError(
SQLiteVirtualTableCursor cursor,
string error
)
{
return SetCursorError(
this, cursor, LogErrorsNoThrow, LogExceptionsNoThrow, error);
}
#endregion
///////////////////////////////////////////////////////////////////////
#region Index Handling Helper Methods
/// <summary>
|