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Overview
| Comment: | Some cleanup work. Implement the SQLiteValue helper class. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | virtualTables |
| Files: | files | file ages | folders |
| SHA1: |
33b2470a683dadaa02d60b71f806707c |
| User & Date: | mistachkin 2013-06-07 08:32:49 |
Context
|
2013-06-07
| ||
| 08:50 | Minor adjustments to previous commit. check-in: a900416795 user: mistachkin tags: virtualTables | |
| 08:32 | Some cleanup work. Implement the SQLiteValue helper class. check-in: 33b2470a68 user: mistachkin tags: virtualTables | |
| 02:45 | Rename the SQLiteModule class to SQLiteModuleNoop. Adjustments to method and parameter naming conventions. Initial implementation of xOpen virtual table method. check-in: f5c3afbfb1 user: mistachkin tags: virtualTables | |
Changes
Changes to System.Data.SQLite/SQLiteModuleBase.cs.
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namespace System.Data.SQLite
{
public sealed class SQLiteContext
{
}
///////////////////////////////////////////////////////////////////////
public sealed class SQLiteValue
{
}
///////////////////////////////////////////////////////////////////////
public class SQLiteIndexConstraint
{
private SQLiteModuleBase.UnsafeNativeMethods2.sqlite3_index_constraint constraint;
}
///////////////////////////////////////////////////////////////////////
public class SQLiteIndexOrderBy
{
private SQLiteModuleBase.UnsafeNativeMethods2.sqlite3_index_orderby orderBy;
}
///////////////////////////////////////////////////////////////////////
public class SQLiteIndexConstraintUsage
{
private SQLiteModuleBase.UnsafeNativeMethods2.sqlite3_index_constraint_usage constraintUsage;
}
///////////////////////////////////////////////////////////////////////
public class SQLiteIndex
{
SQLiteIndexConstraint[] Constraints;
SQLiteIndexOrderBy[] OrderBys;
................................................................................
int idxNum; /* Number used to identify the index */
string idxStr; /* String, possibly obtained from sqlite3_malloc */
int needToFreeIdxStr; /* Free idxStr using sqlite3_free() if true */
int orderByConsumed; /* True if output is already ordered */
double estimatedCost; /* Estimated cost of using this index */
}
///////////////////////////////////////////////////////////////////////
public class SQLiteVirtualTableCursor
{
internal SQLiteModuleBase.UnsafeNativeMethods2.sqlite3_vtab_cursor cursor;
}
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate int xFunc(
IntPtr pContext,
int argc,
[MarshalAs(UnmanagedType.LPArray, SizeParamIndex = 1)]
IntPtr[] argv
);
public interface ISQLiteNativeModule
{
SQLiteErrorCode xCreate(IntPtr pDb, IntPtr pAux, int argc, ref IntPtr[] argv, ref IntPtr pVtab, ref IntPtr pError);
SQLiteErrorCode xConnect(IntPtr pDb, IntPtr pAux, int argc, ref IntPtr[] argv, ref IntPtr pVtab, ref IntPtr pError);
SQLiteErrorCode xBestIndex(IntPtr pVtab, IntPtr index);
SQLiteErrorCode xDisconnect(IntPtr pVtab);
................................................................................
SQLiteErrorCode xRollback(IntPtr pVtab);
SQLiteErrorCode xFindFunction(IntPtr pVtab, int nArg, IntPtr zName, ref xFunc pxFunc, ref IntPtr ppArg);
SQLiteErrorCode xRename(IntPtr pVtab, IntPtr zNew);
SQLiteErrorCode xSavepoint(IntPtr pVtab, int iSavepoint);
SQLiteErrorCode xRelease(IntPtr pVtab, int iSavepoint);
SQLiteErrorCode xRollbackTo(IntPtr pVtab, int iSavepoint);
}
public interface ISQLiteManagedModule
{
bool Declared { get; }
SQLiteErrorCode Create(SQLiteConnection connection, IntPtr pClientData, string[] argv, ref string error);
SQLiteErrorCode Connect(SQLiteConnection connection, IntPtr pClientData, string[] argv, ref string error);
................................................................................
SQLiteErrorCode Rollback();
SQLiteErrorCode FindFunction(string zName, ref SQLiteFunction function, object[] args);
SQLiteErrorCode Rename(string zNew);
SQLiteErrorCode Savepoint(int iSavepoint);
SQLiteErrorCode Release(int iSavepoint);
SQLiteErrorCode RollbackTo(int iSavepoint);
}
#if NET_40
[SecurityCritical()]
#else
[SecurityPermission(SecurityAction.LinkDemand, UnmanagedCode = true)]
#endif
public abstract class SQLiteModuleBase : ISQLiteManagedModule, ISQLiteNativeModule, IDisposable
................................................................................
ref IntPtr[] argv,
ref IntPtr pVtab,
ref IntPtr pError
);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate SQLiteErrorCode xBestIndex(
[MarshalAs(UnmanagedType.LPStruct)]
IntPtr pVtab,
[MarshalAs(UnmanagedType.LPStruct)]
IntPtr index
);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate SQLiteErrorCode xDisconnect(
[MarshalAs(UnmanagedType.LPStruct)]
IntPtr pVtab
);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate SQLiteErrorCode xDestroy(
[MarshalAs(UnmanagedType.LPStruct)]
IntPtr pVtab
);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate SQLiteErrorCode xOpen(
[MarshalAs(UnmanagedType.LPStruct)]
IntPtr pVtab,
ref IntPtr pCursor
);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate SQLiteErrorCode xClose(
[MarshalAs(UnmanagedType.LPStruct)]
IntPtr pCursor
);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate SQLiteErrorCode xFilter(
[MarshalAs(UnmanagedType.LPStruct)]
IntPtr pCursor,
int idxNum,
IntPtr idxStr,
int argc,
IntPtr[] argv
);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate SQLiteErrorCode xNext(
[MarshalAs(UnmanagedType.LPStruct)]
IntPtr pCursor
);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate SQLiteErrorCode xEof(
[MarshalAs(UnmanagedType.LPStruct)]
IntPtr pCursor
);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate SQLiteErrorCode xColumn(
[MarshalAs(UnmanagedType.LPStruct)]
IntPtr pCursor,
IntPtr pContext,
int index
);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate SQLiteErrorCode xRowId(
[MarshalAs(UnmanagedType.LPStruct)]
IntPtr pCursor,
ref long rowId
);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate SQLiteErrorCode xUpdate(
[MarshalAs(UnmanagedType.LPStruct)]
IntPtr pVtab,
int nData,
ref IntPtr apData,
ref long rowId
);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate SQLiteErrorCode xBegin(
[MarshalAs(UnmanagedType.LPStruct)]
IntPtr pVtab
);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate SQLiteErrorCode xSync(
[MarshalAs(UnmanagedType.LPStruct)]
IntPtr pVtab
);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate SQLiteErrorCode xCommit(
[MarshalAs(UnmanagedType.LPStruct)]
IntPtr pVtab
);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate SQLiteErrorCode xRollback(
[MarshalAs(UnmanagedType.LPStruct)]
IntPtr pVtab
);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate SQLiteErrorCode xFindFunction(
[MarshalAs(UnmanagedType.LPStruct)]
IntPtr pVtab,
int nArg,
IntPtr zName,
ref xFunc pxFunc,
ref IntPtr ppArg
);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate SQLiteErrorCode xRename(
[MarshalAs(UnmanagedType.LPStruct)]
IntPtr pVtab,
IntPtr zNew
);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate SQLiteErrorCode xSavepoint(
[MarshalAs(UnmanagedType.LPStruct)]
IntPtr pVtab,
int iSavepoint
);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate SQLiteErrorCode xRelease(
[MarshalAs(UnmanagedType.LPStruct)]
IntPtr pVtab,
int iSavepoint
);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate SQLiteErrorCode xRollbackTo(
[MarshalAs(UnmanagedType.LPStruct)]
IntPtr pVtab,
int iSavepoint
);
private static readonly int SQLITE_INDEX_CONSTRAINT_EQ = 2;
private static readonly int SQLITE_INDEX_CONSTRAINT_GT = 4;
private static readonly int SQLITE_INDEX_CONSTRAINT_LE = 8;
................................................................................
private static void Free(IntPtr pMemory)
{
UnsafeNativeMethods.sqlite3_free(pMemory);
}
///////////////////////////////////////////////////////////////////////
private static int ProbeForUtf8ByteLength(IntPtr pValue, int limit)
{
int length = 0;
if (pValue != IntPtr.Zero)
{
do
................................................................................
}
return length;
}
///////////////////////////////////////////////////////////////////////
private static string StringFromUtf8IntPtr(IntPtr pValue)
{
if (pValue == IntPtr.Zero)
return null;
int length = ProbeForUtf8ByteLength(pValue, ThirtyBits);
if (length > 0)
{
byte[] bytes = new byte[length];
Marshal.Copy(pValue, bytes, 0, length);
return GetStringFromUtf8Bytes(bytes);
}
return String.Empty;
}
///////////////////////////////////////////////////////////////////////
|
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namespace System.Data.SQLite
{
public sealed class SQLiteContext
{
}
///////////////////////////////////////////////////////////////////////////
public sealed class SQLiteValue
{
#region Private Data
private IntPtr pValue;
#endregion
///////////////////////////////////////////////////////////////////////
#region Private Constructors
internal SQLiteValue(IntPtr pValue)
{
this.pValue = pValue;
}
#endregion
///////////////////////////////////////////////////////////////////////
#region Public Methods
public TypeAffinity GetTypeAffinity()
{
return UnsafeNativeMethods.sqlite3_value_type(pValue);
}
///////////////////////////////////////////////////////////////////////
public int GetBytes()
{
return UnsafeNativeMethods.sqlite3_value_bytes(pValue);
}
///////////////////////////////////////////////////////////////////////
public int GetInt()
{
return UnsafeNativeMethods.sqlite3_value_int(pValue);
}
///////////////////////////////////////////////////////////////////////
public long GetInt64()
{
return UnsafeNativeMethods.sqlite3_value_int64(pValue);
}
///////////////////////////////////////////////////////////////////////
public double GetDouble()
{
return UnsafeNativeMethods.sqlite3_value_double(pValue);
}
///////////////////////////////////////////////////////////////////////
public string GetString()
{
return SQLiteModuleBase.StringFromUtf8IntPtr(pValue, GetBytes());
}
///////////////////////////////////////////////////////////////////////
public byte[] GetBlob()
{
return SQLiteModuleBase.BytesFromIntPtr(pValue, GetBytes());
}
#endregion
}
///////////////////////////////////////////////////////////////////////////
public class SQLiteIndexConstraint
{
private SQLiteModuleBase.UnsafeNativeMethods2.sqlite3_index_constraint constraint;
}
///////////////////////////////////////////////////////////////////////////
public class SQLiteIndexOrderBy
{
private SQLiteModuleBase.UnsafeNativeMethods2.sqlite3_index_orderby orderBy;
}
///////////////////////////////////////////////////////////////////////////
public class SQLiteIndexConstraintUsage
{
private SQLiteModuleBase.UnsafeNativeMethods2.sqlite3_index_constraint_usage constraintUsage;
}
///////////////////////////////////////////////////////////////////////////
public class SQLiteIndex
{
SQLiteIndexConstraint[] Constraints;
SQLiteIndexOrderBy[] OrderBys;
................................................................................
int idxNum; /* Number used to identify the index */
string idxStr; /* String, possibly obtained from sqlite3_malloc */
int needToFreeIdxStr; /* Free idxStr using sqlite3_free() if true */
int orderByConsumed; /* True if output is already ordered */
double estimatedCost; /* Estimated cost of using this index */
}
///////////////////////////////////////////////////////////////////////////
public class SQLiteVirtualTableCursor
{
internal SQLiteModuleBase.UnsafeNativeMethods2.sqlite3_vtab_cursor cursor;
}
///////////////////////////////////////////////////////////////////////////
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate int xFunc(
IntPtr pContext,
int argc,
[MarshalAs(UnmanagedType.LPArray, SizeParamIndex = 1)]
IntPtr[] argv
);
///////////////////////////////////////////////////////////////////////////
public interface ISQLiteNativeModule
{
SQLiteErrorCode xCreate(IntPtr pDb, IntPtr pAux, int argc, ref IntPtr[] argv, ref IntPtr pVtab, ref IntPtr pError);
SQLiteErrorCode xConnect(IntPtr pDb, IntPtr pAux, int argc, ref IntPtr[] argv, ref IntPtr pVtab, ref IntPtr pError);
SQLiteErrorCode xBestIndex(IntPtr pVtab, IntPtr index);
SQLiteErrorCode xDisconnect(IntPtr pVtab);
................................................................................
SQLiteErrorCode xRollback(IntPtr pVtab);
SQLiteErrorCode xFindFunction(IntPtr pVtab, int nArg, IntPtr zName, ref xFunc pxFunc, ref IntPtr ppArg);
SQLiteErrorCode xRename(IntPtr pVtab, IntPtr zNew);
SQLiteErrorCode xSavepoint(IntPtr pVtab, int iSavepoint);
SQLiteErrorCode xRelease(IntPtr pVtab, int iSavepoint);
SQLiteErrorCode xRollbackTo(IntPtr pVtab, int iSavepoint);
}
///////////////////////////////////////////////////////////////////////////
public interface ISQLiteManagedModule
{
bool Declared { get; }
SQLiteErrorCode Create(SQLiteConnection connection, IntPtr pClientData, string[] argv, ref string error);
SQLiteErrorCode Connect(SQLiteConnection connection, IntPtr pClientData, string[] argv, ref string error);
................................................................................
SQLiteErrorCode Rollback();
SQLiteErrorCode FindFunction(string zName, ref SQLiteFunction function, object[] args);
SQLiteErrorCode Rename(string zNew);
SQLiteErrorCode Savepoint(int iSavepoint);
SQLiteErrorCode Release(int iSavepoint);
SQLiteErrorCode RollbackTo(int iSavepoint);
}
///////////////////////////////////////////////////////////////////////////
#if NET_40
[SecurityCritical()]
#else
[SecurityPermission(SecurityAction.LinkDemand, UnmanagedCode = true)]
#endif
public abstract class SQLiteModuleBase : ISQLiteManagedModule, ISQLiteNativeModule, IDisposable
................................................................................
ref IntPtr[] argv,
ref IntPtr pVtab,
ref IntPtr pError
);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate SQLiteErrorCode xBestIndex(
IntPtr pVtab,
IntPtr index
);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate SQLiteErrorCode xDisconnect(
IntPtr pVtab
);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate SQLiteErrorCode xDestroy(
IntPtr pVtab
);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate SQLiteErrorCode xOpen(
IntPtr pVtab,
ref IntPtr pCursor
);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate SQLiteErrorCode xClose(
IntPtr pCursor
);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate SQLiteErrorCode xFilter(
IntPtr pCursor,
int idxNum,
IntPtr idxStr,
int argc,
IntPtr[] argv
);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate SQLiteErrorCode xNext(
IntPtr pCursor
);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate SQLiteErrorCode xEof(
IntPtr pCursor
);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate SQLiteErrorCode xColumn(
IntPtr pCursor,
IntPtr pContext,
int index
);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate SQLiteErrorCode xRowId(
IntPtr pCursor,
ref long rowId
);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate SQLiteErrorCode xUpdate(
IntPtr pVtab,
int nData,
ref IntPtr apData,
ref long rowId
);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate SQLiteErrorCode xBegin(
IntPtr pVtab
);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate SQLiteErrorCode xSync(
IntPtr pVtab
);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate SQLiteErrorCode xCommit(
IntPtr pVtab
);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate SQLiteErrorCode xRollback(
IntPtr pVtab
);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate SQLiteErrorCode xFindFunction(
IntPtr pVtab,
int nArg,
IntPtr zName,
ref xFunc pxFunc,
ref IntPtr ppArg
);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate SQLiteErrorCode xRename(
IntPtr pVtab,
IntPtr zNew
);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate SQLiteErrorCode xSavepoint(
IntPtr pVtab,
int iSavepoint
);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate SQLiteErrorCode xRelease(
IntPtr pVtab,
int iSavepoint
);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate SQLiteErrorCode xRollbackTo(
IntPtr pVtab,
int iSavepoint
);
private static readonly int SQLITE_INDEX_CONSTRAINT_EQ = 2;
private static readonly int SQLITE_INDEX_CONSTRAINT_GT = 4;
private static readonly int SQLITE_INDEX_CONSTRAINT_LE = 8;
................................................................................
private static void Free(IntPtr pMemory)
{
UnsafeNativeMethods.sqlite3_free(pMemory);
}
///////////////////////////////////////////////////////////////////////
internal static byte[] BytesFromIntPtr(IntPtr pValue, int length)
{
if (pValue == IntPtr.Zero)
return null;
if (length == 0)
return new byte[0];
byte[] result = new byte[length];
Marshal.Copy(pValue, result, 0, length);
return result;
}
///////////////////////////////////////////////////////////////////////
private static int ProbeForUtf8ByteLength(IntPtr pValue, int limit)
{
int length = 0;
if (pValue != IntPtr.Zero)
{
do
................................................................................
}
return length;
}
///////////////////////////////////////////////////////////////////////
internal static string StringFromUtf8IntPtr(IntPtr pValue)
{
int length = ProbeForUtf8ByteLength(pValue, ThirtyBits);
return StringFromUtf8IntPtr(pValue, length);
}
///////////////////////////////////////////////////////////////////////
internal static string StringFromUtf8IntPtr(IntPtr pValue, int length)
{
if (pValue == IntPtr.Zero)
return null;
if (length > 0)
{
byte[] bytes = new byte[length];
Marshal.Copy(pValue, bytes, 0, length);
return GetStringFromUtf8Bytes(bytes);
}
return String.Empty;
}
///////////////////////////////////////////////////////////////////////
|