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Overview
| Comment: | Fix xCreate and xConnect delegate signatures. Finish marshalling of the sqlite3_index_info structure. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | virtualTables |
| Files: | files | file ages | folders |
| SHA1: |
7461bf423f2ef22d8ec30acd20d9912d |
| User & Date: | mistachkin 2013-06-18 20:39:06 |
Context
|
2013-06-18
| ||
| 21:15 | Move marshalling utility methods into the internal SQLiteMarshal class. check-in: 89613e2645 user: mistachkin tags: virtualTables | |
| 20:39 | Fix xCreate and xConnect delegate signatures. Finish marshalling of the sqlite3_index_info structure. check-in: 7461bf423f user: mistachkin tags: virtualTables | |
| 06:12 | Fix compilation errors for the .NET Compact Framework build. check-in: e64388aacd user: mistachkin tags: virtualTables | |
Changes
Changes to System.Data.SQLite/SQLiteModuleBase.cs.
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}
#endregion
}
#endregion
///////////////////////////////////////////////////////////////////////////
/* [Flags()] */
public enum SQLiteIndexConstraintOp : byte
{
EqualTo = 2,
GreaterThan = 4,
LessThanOrEqualTo = 8,
LessThan = 16,
GreaterThanOrEqualTo = 32,
Match = 64
}
///////////////////////////////////////////////////////////////////////////
public sealed class SQLiteIndexConstraint
{
private UnsafeNativeMethods.sqlite3_index_constraint constraint;
}
///////////////////////////////////////////////////////////////////////////
public sealed class SQLiteIndexOrderBy
{
private UnsafeNativeMethods.sqlite3_index_orderby orderBy;
}
///////////////////////////////////////////////////////////////////////////
public sealed class SQLiteIndexConstraintUsage
{
private UnsafeNativeMethods.sqlite3_index_constraint_usage constraintUsage;
}
///////////////////////////////////////////////////////////////////////////
public sealed class SQLiteIndexInputs
{
public SQLiteIndexInputs(int nConstraint, int nOrderBy)
{
constraints = new SQLiteIndexConstraint[nConstraint];
orderBys = new SQLiteIndexOrderBy[nOrderBy];
}
///////////////////////////////////////////////////////////////////////
private SQLiteIndexConstraint[] constraints;
public SQLiteIndexConstraint[] Constraints
{
get { return constraints; }
}
///////////////////////////////////////////////////////////////////////
private SQLiteIndexOrderBy[] orderBys;
public SQLiteIndexOrderBy[] OrderBys
{
get { return orderBys; }
}
}
///////////////////////////////////////////////////////////////////////////
public sealed class SQLiteIndexOutputs
{
public SQLiteIndexOutputs(int nConstraint)
{
constraintUsages = new SQLiteIndexConstraintUsage[nConstraint];
}
///////////////////////////////////////////////////////////////////////
private SQLiteIndexConstraintUsage[] constraintUsages;
public SQLiteIndexConstraintUsage[] ConstraintUsages
{
get { return constraintUsages; }
}
///////////////////////////////////////////////////////////////////////
private int idxNum; /* Number used to identify the index */
public int IdxNum
{
get { return idxNum; }
set { idxNum = value; }
}
///////////////////////////////////////////////////////////////////////
private string idxStr; /* String, possibly obtained from sqlite3_malloc */
public string IdxStr
{
get { return idxStr; }
set { idxStr = value; }
}
///////////////////////////////////////////////////////////////////////
private int needToFreeIdxStr; /* Free idxStr using sqlite3_free() if true */
public int NeedToFreeIdxStr
{
get { return needToFreeIdxStr; }
set { needToFreeIdxStr = value; }
}
///////////////////////////////////////////////////////////////////////
private int orderByConsumed; /* True if output is already ordered */
public int OrderByConsumed
{
get { return orderByConsumed; }
set { orderByConsumed = value; }
}
///////////////////////////////////////////////////////////////////////
private double estimatedCost; /* Estimated cost of using this index */
public double EstimatedCost
{
get { return estimatedCost; }
set { estimatedCost = value; }
}
}
///////////////////////////////////////////////////////////////////////////
public sealed class SQLiteIndex
{
public SQLiteIndex(int nConstraint, int nOrderBy)
{
inputs = new SQLiteIndexInputs(nConstraint, nOrderBy);
outputs = new SQLiteIndexOutputs(nConstraint);
}
///////////////////////////////////////////////////////////////////////
private SQLiteIndexInputs inputs;
public SQLiteIndexInputs Inputs
{
get { return inputs; }
}
///////////////////////////////////////////////////////////////////////
private SQLiteIndexOutputs outputs;
public SQLiteIndexOutputs Outputs
{
get { return outputs; }
}
}
///////////////////////////////////////////////////////////////////////////
public class SQLiteVirtualTableCursor : ISQLiteNativeHandle
{
#region Public Constructors
public SQLiteVirtualTableCursor(
IntPtr nativeHandle
)
{
................................................................................
private IntPtr nativeHandle;
public IntPtr NativeHandle
{
get { return nativeHandle; }
}
#endregion
}
///////////////////////////////////////////////////////////////////////////
public interface ISQLiteNativeHandle
{
IntPtr NativeHandle { get; }
}
///////////////////////////////////////////////////////////////////////////
public interface ISQLiteNativeModule
{
// https://www.sqlite.org/vtab.html
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 pIndex);
SQLiteErrorCode xDisconnect(IntPtr pVtab);
SQLiteErrorCode xDestroy(IntPtr pVtab);
SQLiteErrorCode xOpen(IntPtr pVtab, ref IntPtr pCursor);
SQLiteErrorCode xClose(IntPtr pCursor);
SQLiteErrorCode xFilter(IntPtr pCursor, int idxNum, IntPtr idxStr, int argc, IntPtr[] argv);
SQLiteErrorCode xNext(IntPtr pCursor);
bool xEof(IntPtr pCursor);
SQLiteErrorCode xColumn(IntPtr pCursor, IntPtr pContext, int index);
SQLiteErrorCode xRowId(IntPtr pCursor, ref long rowId);
SQLiteErrorCode xUpdate(IntPtr pVtab, int nData, IntPtr apData, ref long rowId);
SQLiteErrorCode xBegin(IntPtr pVtab);
SQLiteErrorCode xSync(IntPtr pVtab);
SQLiteErrorCode xCommit(IntPtr pVtab);
SQLiteErrorCode xRollback(IntPtr pVtab);
bool xFindFunction(IntPtr pVtab, int nArg, IntPtr zName, ref SQLiteCallback callback, ref IntPtr pClientData);
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 BestIndex(SQLiteIndex index);
SQLiteErrorCode Disconnect();
SQLiteErrorCode Destroy();
SQLiteErrorCode Open(ref SQLiteVirtualTableCursor cursor);
SQLiteErrorCode Close(SQLiteVirtualTableCursor cursor);
SQLiteErrorCode Filter(SQLiteVirtualTableCursor cursor, int idxNum, string idxStr, SQLiteValue[] argv);
SQLiteErrorCode Next(SQLiteVirtualTableCursor cursor);
bool Eof(SQLiteVirtualTableCursor cursor);
SQLiteErrorCode Column(SQLiteVirtualTableCursor cursor, SQLiteContext context, int index);
SQLiteErrorCode RowId(SQLiteVirtualTableCursor cursor, ref long rowId);
SQLiteErrorCode Update(SQLiteValue[] values, ref long rowId);
SQLiteErrorCode Begin();
SQLiteErrorCode Sync();
SQLiteErrorCode Commit();
SQLiteErrorCode Rollback();
bool FindFunction(int nArg, string zName, ref SQLiteFunction function, ref IntPtr pClientData);
SQLiteErrorCode Rename(string zNew);
SQLiteErrorCode Savepoint(int iSavepoint);
SQLiteErrorCode Release(int iSavepoint);
SQLiteErrorCode RollbackTo(int iSavepoint);
}
///////////////////////////////////////////////////////////////////////////
public abstract class SQLiteModuleBase :
ISQLiteManagedModule, ISQLiteNativeModule, IDisposable
{
private static Encoding Utf8Encoding = Encoding.UTF8;
///////////////////////////////////////////////////////////////////////
#region Private Methods
private UnsafeNativeMethods.sqlite3_module CreateNativeModule()
{
UnsafeNativeMethods.sqlite3_module module =
................................................................................
return module;
}
private static int ThirtyBits = 0x3fffffff;
///////////////////////////////////////////////////////////////////////
#if PLATFORM_COMPACTFRAMEWORK
private static IntPtr IntPtrForOffset(
IntPtr pointer,
int offset
)
{
return new IntPtr(pointer.ToInt64() + offset);
}
#endif
///////////////////////////////////////////////////////////////////////
private static int MarshalReadInt32(
IntPtr pointer,
int offset
)
................................................................................
result[index] = new SQLiteValue(values[index]);
return result;
}
///////////////////////////////////////////////////////////////////////
private static void IndexFromIntPtr(
IntPtr pIndex,
ref UnsafeNativeMethods.sqlite3_index_info index
)
{
if (pIndex == IntPtr.Zero)
return;
Type type = typeof(UnsafeNativeMethods.sqlite3_index_info);
int nConstraint = MarshalReadInt32(pIndex, 0);
int nOrderBy = MarshalReadInt32(pIndex, sizeof(int) + IntPtr.Size);
}
///////////////////////////////////////////////////////////////////////
private static void IndexOutputsToIntPtr(
UnsafeNativeMethods.sqlite3_index_info index,
SQLiteIndexOutputs indexOutputs
)
{
}
#endregion
///////////////////////////////////////////////////////////////////////
#region Public Constructors
public SQLiteModuleBase()
................................................................................
///////////////////////////////////////////////////////////////////////
#region ISQLiteNativeModule Members
public SQLiteErrorCode xCreate(
IntPtr pDb,
IntPtr pAux,
int argc,
ref IntPtr[] argv,
ref IntPtr pVtab,
ref IntPtr pError
)
{
try
{
using (SQLiteConnection connection = new SQLiteConnection(
................................................................................
///////////////////////////////////////////////////////////////////////
public SQLiteErrorCode xConnect(
IntPtr pDb,
IntPtr pAux,
int argc,
ref IntPtr[] argv,
ref IntPtr pVtab,
ref IntPtr pError
)
{
try
{
using (SQLiteConnection connection = new SQLiteConnection(
................................................................................
public SQLiteErrorCode xBestIndex(
IntPtr pVtab,
IntPtr pIndex
)
{
try
{
if (BestIndex(null) == SQLiteErrorCode.Ok)
{
return SQLiteErrorCode.Ok;
}
}
catch (Exception e) /* NOTE: Must catch ALL. */
{
SetTableError(pVtab, e.ToString());
}
................................................................................
#region Destructor
~SQLiteModuleBase()
{
Dispose(false);
}
#endregion
}
}
|
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}
#endregion
}
#endregion
///////////////////////////////////////////////////////////////////////////
#region SQLiteIndexConstraintOp Enumeration
/* [Flags()] */
public enum SQLiteIndexConstraintOp : byte
{
EqualTo = 2,
GreaterThan = 4,
LessThanOrEqualTo = 8,
LessThan = 16,
GreaterThanOrEqualTo = 32,
Match = 64
}
#endregion
///////////////////////////////////////////////////////////////////////////
#region SQLiteIndexConstraint Class
public sealed class SQLiteIndexConstraint
{
#region Internal Constructors
internal SQLiteIndexConstraint(
UnsafeNativeMethods.sqlite3_index_constraint constraint
)
: this(constraint.iColumn, constraint.op, constraint.usable,
constraint.iTermOffset)
{
// do nothing.
}
#endregion
//////////////////////////////////////////////////////////////////////
#region Private Constructors
private SQLiteIndexConstraint(
int iColumn,
SQLiteIndexConstraintOp op,
byte usable,
int iTermOffset
)
{
this.iColumn = iColumn;
this.op = op;
this.usable = usable;
this.iTermOffset = iTermOffset;
}
#endregion
//////////////////////////////////////////////////////////////////////
#region Public Fields
public int iColumn;
//////////////////////////////////////////////////////////////////////
public SQLiteIndexConstraintOp op;
//////////////////////////////////////////////////////////////////////
public byte usable;
//////////////////////////////////////////////////////////////////////
public int iTermOffset;
#endregion
}
#endregion
///////////////////////////////////////////////////////////////////////////
#region SQLiteIndexOrderBy Class
public sealed class SQLiteIndexOrderBy
{
#region Internal Constructors
internal SQLiteIndexOrderBy(
UnsafeNativeMethods.sqlite3_index_orderby orderBy
)
: this(orderBy.iColumn, orderBy.desc)
{
// do nothing.
}
#endregion
//////////////////////////////////////////////////////////////////////
#region Private Constructors
private SQLiteIndexOrderBy(
int iColumn,
byte desc
)
{
this.iColumn = iColumn;
this.desc = desc;
}
#endregion
//////////////////////////////////////////////////////////////////////
#region Public Fields
public int iColumn; /* Column number */
//////////////////////////////////////////////////////////////////////
public byte desc; /* True for DESC. False for ASC. */
#endregion
}
#endregion
///////////////////////////////////////////////////////////////////////////
#region SQLiteIndexConstraintUsage Class
public sealed class SQLiteIndexConstraintUsage
{
#region Internal Constructors
internal SQLiteIndexConstraintUsage(
UnsafeNativeMethods.sqlite3_index_constraint_usage constraintUsage
)
: this(constraintUsage.argvIndex, constraintUsage.omit)
{
// do nothing.
}
#endregion
//////////////////////////////////////////////////////////////////////
#region Private Constructors
private SQLiteIndexConstraintUsage(
int argvIndex,
byte omit
)
{
this.argvIndex = argvIndex;
this.omit = omit;
}
#endregion
///////////////////////////////////////////////////////////////////////
#region Public Fields
public int argvIndex;
///////////////////////////////////////////////////////////////////////
public byte omit;
#endregion
}
#endregion
///////////////////////////////////////////////////////////////////////////
#region SQLiteIndexInputs Class
public sealed class SQLiteIndexInputs
{
#region Internal Constructors
internal SQLiteIndexInputs(int nConstraint, int nOrderBy)
{
constraints = new SQLiteIndexConstraint[nConstraint];
orderBys = new SQLiteIndexOrderBy[nOrderBy];
}
#endregion
///////////////////////////////////////////////////////////////////////
#region Public Properties
private SQLiteIndexConstraint[] constraints;
public SQLiteIndexConstraint[] Constraints
{
get { return constraints; }
}
///////////////////////////////////////////////////////////////////////
private SQLiteIndexOrderBy[] orderBys;
public SQLiteIndexOrderBy[] OrderBys
{
get { return orderBys; }
}
#endregion
}
#endregion
///////////////////////////////////////////////////////////////////////////
#region SQLiteIndexOutputs Class
public sealed class SQLiteIndexOutputs
{
#region Internal Constructors
internal SQLiteIndexOutputs(int nConstraint)
{
constraintUsages = new SQLiteIndexConstraintUsage[nConstraint];
}
#endregion
///////////////////////////////////////////////////////////////////////
#region Public Properties
private SQLiteIndexConstraintUsage[] constraintUsages;
public SQLiteIndexConstraintUsage[] ConstraintUsages
{
get { return constraintUsages; }
}
///////////////////////////////////////////////////////////////////////
private int idxNum;
public int IdxNum
{
get { return idxNum; }
set { idxNum = value; }
}
///////////////////////////////////////////////////////////////////////
private string idxStr;
public string IdxStr
{
get { return idxStr; }
set { idxStr = value; }
}
///////////////////////////////////////////////////////////////////////
private int needToFreeIdxStr;
public int NeedToFreeIdxStr
{
get { return needToFreeIdxStr; }
set { needToFreeIdxStr = value; }
}
///////////////////////////////////////////////////////////////////////
private int orderByConsumed;
public int OrderByConsumed
{
get { return orderByConsumed; }
set { orderByConsumed = value; }
}
///////////////////////////////////////////////////////////////////////
private double estimatedCost;
public double EstimatedCost
{
get { return estimatedCost; }
set { estimatedCost = value; }
}
#endregion
}
#endregion
///////////////////////////////////////////////////////////////////////////
#region SQLiteIndex Class
public sealed class SQLiteIndex
{
#region Internal Constructors
internal SQLiteIndex(int nConstraint, int nOrderBy)
{
inputs = new SQLiteIndexInputs(nConstraint, nOrderBy);
outputs = new SQLiteIndexOutputs(nConstraint);
}
#endregion
///////////////////////////////////////////////////////////////////////
#region Public Properties
private SQLiteIndexInputs inputs;
public SQLiteIndexInputs Inputs
{
get { return inputs; }
}
///////////////////////////////////////////////////////////////////////
private SQLiteIndexOutputs outputs;
public SQLiteIndexOutputs Outputs
{
get { return outputs; }
}
#endregion
}
#endregion
///////////////////////////////////////////////////////////////////////////
#region SQLiteVirtualTableCursor Class
public class SQLiteVirtualTableCursor : ISQLiteNativeHandle
{
#region Public Constructors
public SQLiteVirtualTableCursor(
IntPtr nativeHandle
)
{
................................................................................
private IntPtr nativeHandle;
public IntPtr NativeHandle
{
get { return nativeHandle; }
}
#endregion
}
#endregion
///////////////////////////////////////////////////////////////////////////
#region ISQLiteNativeHandle Interface
public interface ISQLiteNativeHandle
{
IntPtr NativeHandle { get; }
}
#endregion
///////////////////////////////////////////////////////////////////////////
#region ISQLiteNativeModule Interface
public interface ISQLiteNativeModule
{
SQLiteErrorCode xCreate(
IntPtr pDb,
IntPtr pAux,
int argc,
IntPtr[] argv,
ref IntPtr pVtab,
ref IntPtr pError
);
///////////////////////////////////////////////////////////////////////
SQLiteErrorCode xConnect(
IntPtr pDb,
IntPtr pAux,
int argc,
IntPtr[] argv,
ref IntPtr pVtab,
ref IntPtr pError
);
///////////////////////////////////////////////////////////////////////
SQLiteErrorCode xBestIndex(
IntPtr pVtab,
IntPtr pIndex
);
///////////////////////////////////////////////////////////////////////
SQLiteErrorCode xDisconnect(
IntPtr pVtab
);
///////////////////////////////////////////////////////////////////////
SQLiteErrorCode xDestroy(
IntPtr pVtab
);
///////////////////////////////////////////////////////////////////////
SQLiteErrorCode xOpen(
IntPtr pVtab,
ref IntPtr pCursor
);
///////////////////////////////////////////////////////////////////////
SQLiteErrorCode xClose(
IntPtr pCursor
);
///////////////////////////////////////////////////////////////////////
SQLiteErrorCode xFilter(
IntPtr pCursor,
int idxNum,
IntPtr idxStr,
int argc,
IntPtr[] argv
);
///////////////////////////////////////////////////////////////////////
SQLiteErrorCode xNext(
IntPtr pCursor
);
///////////////////////////////////////////////////////////////////////
bool xEof(
IntPtr pCursor
);
///////////////////////////////////////////////////////////////////////
SQLiteErrorCode xColumn(
IntPtr pCursor,
IntPtr pContext,
int index
);
///////////////////////////////////////////////////////////////////////
SQLiteErrorCode xRowId(
IntPtr pCursor,
ref long rowId
);
///////////////////////////////////////////////////////////////////////
SQLiteErrorCode xUpdate(
IntPtr pVtab,
int nData,
IntPtr apData,
ref long rowId
);
///////////////////////////////////////////////////////////////////////
SQLiteErrorCode xBegin(
IntPtr pVtab
);
///////////////////////////////////////////////////////////////////////
SQLiteErrorCode xSync(
IntPtr pVtab
);
///////////////////////////////////////////////////////////////////////
SQLiteErrorCode xCommit(
IntPtr pVtab
);
///////////////////////////////////////////////////////////////////////
SQLiteErrorCode xRollback(
IntPtr pVtab
);
///////////////////////////////////////////////////////////////////////
bool xFindFunction(
IntPtr pVtab,
int nArg,
IntPtr zName,
ref SQLiteCallback callback,
ref IntPtr pClientData
);
///////////////////////////////////////////////////////////////////////
SQLiteErrorCode xRename(
IntPtr pVtab,
IntPtr zNew
);
///////////////////////////////////////////////////////////////////////
SQLiteErrorCode xSavepoint(
IntPtr pVtab,
int iSavepoint
);
///////////////////////////////////////////////////////////////////////
SQLiteErrorCode xRelease(
IntPtr pVtab,
int iSavepoint
);
///////////////////////////////////////////////////////////////////////
SQLiteErrorCode xRollbackTo(
IntPtr pVtab,
int iSavepoint
);
}
#endregion
///////////////////////////////////////////////////////////////////////////
#region ISQLiteManagedModule Interface
public interface ISQLiteManagedModule
{
bool Declared { get; }
///////////////////////////////////////////////////////////////////////
SQLiteErrorCode Create(
SQLiteConnection connection, /* in */
IntPtr pClientData, /* in */
string[] argv, /* in */
ref string error /* out */
);
///////////////////////////////////////////////////////////////////////
SQLiteErrorCode Connect(
SQLiteConnection connection, /* in */
IntPtr pClientData, /* in */
string[] argv, /* in */
ref string error /* out */
);
///////////////////////////////////////////////////////////////////////
SQLiteErrorCode BestIndex(
SQLiteIndex index /* in, out */
);
///////////////////////////////////////////////////////////////////////
SQLiteErrorCode Disconnect();
///////////////////////////////////////////////////////////////////////
SQLiteErrorCode Destroy();
///////////////////////////////////////////////////////////////////////
SQLiteErrorCode Open(
ref SQLiteVirtualTableCursor cursor /* out */
);
///////////////////////////////////////////////////////////////////////
SQLiteErrorCode Close(
SQLiteVirtualTableCursor cursor /* in */
);
///////////////////////////////////////////////////////////////////////
SQLiteErrorCode Filter(
SQLiteVirtualTableCursor cursor, /* in */
int idxNum, /* in */
string idxStr, /* in */
SQLiteValue[] argv /* in */
);
///////////////////////////////////////////////////////////////////////
SQLiteErrorCode Next(
SQLiteVirtualTableCursor cursor /* in */
);
///////////////////////////////////////////////////////////////////////
bool Eof(
SQLiteVirtualTableCursor cursor /* in */
);
///////////////////////////////////////////////////////////////////////
SQLiteErrorCode Column(
SQLiteVirtualTableCursor cursor, /* in */
SQLiteContext context, /* in */
int index /* in */
);
///////////////////////////////////////////////////////////////////////
SQLiteErrorCode RowId(
SQLiteVirtualTableCursor cursor, /* in */
ref long rowId /* out */
);
///////////////////////////////////////////////////////////////////////
SQLiteErrorCode Update(
SQLiteValue[] values, /* in */
ref long rowId /* in, out */
);
///////////////////////////////////////////////////////////////////////
SQLiteErrorCode Begin();
///////////////////////////////////////////////////////////////////////
SQLiteErrorCode Sync();
///////////////////////////////////////////////////////////////////////
SQLiteErrorCode Commit();
///////////////////////////////////////////////////////////////////////
SQLiteErrorCode Rollback();
///////////////////////////////////////////////////////////////////////
bool FindFunction(
int nArg, /* in */
string zName, /* in */
ref SQLiteFunction function, /* out */
ref IntPtr pClientData /* out */
);
///////////////////////////////////////////////////////////////////////
SQLiteErrorCode Rename(
string zNew /* in */
);
///////////////////////////////////////////////////////////////////////
SQLiteErrorCode Savepoint(
int iSavepoint /* in */
);
///////////////////////////////////////////////////////////////////////
SQLiteErrorCode Release(
int iSavepoint /* in */
);
///////////////////////////////////////////////////////////////////////
SQLiteErrorCode RollbackTo(
int iSavepoint /* in */
);
}
#endregion
///////////////////////////////////////////////////////////////////////////
#region SQLiteModuleBase Class
public abstract class SQLiteModuleBase :
ISQLiteManagedModule, ISQLiteNativeModule, IDisposable
{
#region Private Constants
private static readonly Encoding Utf8Encoding = Encoding.UTF8;
#endregion
///////////////////////////////////////////////////////////////////////
#region Private Methods
private UnsafeNativeMethods.sqlite3_module CreateNativeModule()
{
UnsafeNativeMethods.sqlite3_module module =
................................................................................
return module;
}
private static int ThirtyBits = 0x3fffffff;
///////////////////////////////////////////////////////////////////////
private static IntPtr IntPtrForOffset(
IntPtr pointer,
int offset
)
{
return new IntPtr(pointer.ToInt64() + offset);
}
///////////////////////////////////////////////////////////////////////
private static int MarshalReadInt32(
IntPtr pointer,
int offset
)
................................................................................
result[index] = new SQLiteValue(values[index]);
return result;
}
///////////////////////////////////////////////////////////////////////
private static void IndexToIntPtr(
SQLiteIndex index,
IntPtr pIndex
)
{
if ((index == null) || (index.Inputs == null) ||
(index.Inputs.Constraints == null) ||
(index.Inputs.OrderBys == null) || (index.Outputs == null) ||
(index.Outputs.ConstraintUsages == null))
{
return;
}
if (pIndex == IntPtr.Zero)
return;
int offset = 0;
int nConstraint = MarshalReadInt32(pIndex, offset);
if (nConstraint != index.Inputs.Constraints.Length)
return;
if (nConstraint != index.Outputs.ConstraintUsages.Length)
return;
offset += sizeof(int);
IntPtr pConstraint = MarshalReadIntPtr(pIndex, offset);
offset += IntPtr.Size;
int nOrderBy = MarshalReadInt32(pIndex, offset);
index = new SQLiteIndex(nConstraint, nOrderBy);
offset += sizeof(int);
IntPtr pOrderBy = MarshalReadIntPtr(pIndex, offset);
offset += IntPtr.Size;
IntPtr pConstraintUsage = MarshalReadIntPtr(pIndex, offset);
int sizeOfConstraintType = Marshal.SizeOf(typeof(
UnsafeNativeMethods.sqlite3_index_constraint));
for (int iConstraint = 0; iConstraint < nConstraint; iConstraint++)
{
UnsafeNativeMethods.sqlite3_index_constraint constraint =
new UnsafeNativeMethods.sqlite3_index_constraint(
index.Inputs.Constraints[iConstraint]);
Marshal.StructureToPtr(
constraint, IntPtrForOffset(pConstraint,
iConstraint * sizeOfConstraintType), false);
index.Inputs.Constraints[iConstraint] =
new SQLiteIndexConstraint(constraint);
}
int sizeOfOrderByType = Marshal.SizeOf(typeof(
UnsafeNativeMethods.sqlite3_index_orderby));
for (int iOrderBy = 0; iOrderBy < nOrderBy; iOrderBy++)
{
UnsafeNativeMethods.sqlite3_index_orderby orderBy =
new UnsafeNativeMethods.sqlite3_index_orderby(
index.Inputs.OrderBys[iOrderBy]);
Marshal.StructureToPtr(
orderBy, IntPtrForOffset(pOrderBy,
iOrderBy * sizeOfOrderByType), false);
index.Inputs.OrderBys[iOrderBy] =
new SQLiteIndexOrderBy(orderBy);
}
int sizeOfConstraintUsageType = Marshal.SizeOf(typeof(
UnsafeNativeMethods.sqlite3_index_constraint_usage));
for (int iConstraint = 0; iConstraint < nConstraint; iConstraint++)
{
UnsafeNativeMethods.sqlite3_index_constraint_usage constraintUsage =
new UnsafeNativeMethods.sqlite3_index_constraint_usage(
index.Outputs.ConstraintUsages[iConstraint]);
Marshal.StructureToPtr(
constraintUsage, IntPtrForOffset(pConstraintUsage,
iConstraint * sizeOfConstraintUsageType), false);
index.Outputs.ConstraintUsages[iConstraint] =
new SQLiteIndexConstraintUsage(constraintUsage);
}
}
///////////////////////////////////////////////////////////////////////
private static void IndexFromIntPtr(
IntPtr pIndex,
ref SQLiteIndex index
)
{
if (pIndex == IntPtr.Zero)
return;
int offset = 0;
int nConstraint = MarshalReadInt32(pIndex, offset);
offset += sizeof(int);
IntPtr pConstraint = MarshalReadIntPtr(pIndex, offset);
offset += IntPtr.Size;
int nOrderBy = MarshalReadInt32(pIndex, offset);
index = new SQLiteIndex(nConstraint, nOrderBy);
offset += sizeof(int);
IntPtr pOrderBy = MarshalReadIntPtr(pIndex, offset);
offset += IntPtr.Size;
IntPtr pConstraintUsage = MarshalReadIntPtr(pIndex, offset);
offset += IntPtr.Size;
index.Outputs.IdxNum = MarshalReadInt32(pIndex, offset);
offset += sizeof(int);
index.Outputs.IdxStr = StringFromUtf8IntPtr(IntPtrForOffset(
pIndex, offset));
offset += IntPtr.Size;
index.Outputs.NeedToFreeIdxStr = MarshalReadInt32(pIndex, offset);
offset += sizeof(int);
index.Outputs.OrderByConsumed = MarshalReadInt32(pIndex, offset);
offset += sizeof(int);
index.Outputs.EstimatedCost = MarshalReadDouble(pIndex, offset);
int sizeOfConstraintType = Marshal.SizeOf(typeof(
UnsafeNativeMethods.sqlite3_index_constraint));
for (int iConstraint = 0; iConstraint < nConstraint; iConstraint++)
{
UnsafeNativeMethods.sqlite3_index_constraint constraint =
new UnsafeNativeMethods.sqlite3_index_constraint();
Marshal.PtrToStructure(IntPtrForOffset(pConstraint,
iConstraint * sizeOfConstraintType), constraint);
index.Inputs.Constraints[iConstraint] =
new SQLiteIndexConstraint(constraint);
}
int sizeOfOrderByType = Marshal.SizeOf(typeof(
UnsafeNativeMethods.sqlite3_index_orderby));
for (int iOrderBy = 0; iOrderBy < nOrderBy; iOrderBy++)
{
UnsafeNativeMethods.sqlite3_index_orderby orderBy =
new UnsafeNativeMethods.sqlite3_index_orderby();
Marshal.PtrToStructure(IntPtrForOffset(pOrderBy,
iOrderBy * sizeOfOrderByType), orderBy);
index.Inputs.OrderBys[iOrderBy] =
new SQLiteIndexOrderBy(orderBy);
}
int sizeOfConstraintUsageType = Marshal.SizeOf(typeof(
UnsafeNativeMethods.sqlite3_index_constraint_usage));
for (int iConstraint = 0; iConstraint < nConstraint; iConstraint++)
{
UnsafeNativeMethods.sqlite3_index_constraint_usage constraintUsage =
new UnsafeNativeMethods.sqlite3_index_constraint_usage();
Marshal.PtrToStructure(IntPtrForOffset(pConstraintUsage,
iConstraint * sizeOfConstraintUsageType), constraintUsage);
index.Outputs.ConstraintUsages[iConstraint] =
new SQLiteIndexConstraintUsage(constraintUsage);
}
}
#endregion
///////////////////////////////////////////////////////////////////////
#region Public Constructors
public SQLiteModuleBase()
................................................................................
///////////////////////////////////////////////////////////////////////
#region ISQLiteNativeModule Members
public SQLiteErrorCode xCreate(
IntPtr pDb,
IntPtr pAux,
int argc,
IntPtr[] argv,
ref IntPtr pVtab,
ref IntPtr pError
)
{
try
{
using (SQLiteConnection connection = new SQLiteConnection(
................................................................................
///////////////////////////////////////////////////////////////////////
public SQLiteErrorCode xConnect(
IntPtr pDb,
IntPtr pAux,
int argc,
IntPtr[] argv,
ref IntPtr pVtab,
ref IntPtr pError
)
{
try
{
using (SQLiteConnection connection = new SQLiteConnection(
................................................................................
public SQLiteErrorCode xBestIndex(
IntPtr pVtab,
IntPtr pIndex
)
{
try
{
SQLiteIndex index = null;
IndexFromIntPtr(pIndex, ref index);
if (BestIndex(index) == SQLiteErrorCode.Ok)
{
IndexToIntPtr(index, pIndex);
return SQLiteErrorCode.Ok;
}
}
catch (Exception e) /* NOTE: Must catch ALL. */
{
SetTableError(pVtab, e.ToString());
}
................................................................................
#region Destructor
~SQLiteModuleBase()
{
Dispose(false);
}
#endregion
}
#endregion
}
|
Changes to System.Data.SQLite/UnsafeNativeMethods.cs.
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[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
#endif
public delegate SQLiteErrorCode xCreate(
IntPtr pDb,
IntPtr pAux,
int argc,
[MarshalAs(UnmanagedType.LPArray, SizeParamIndex = 2)]
ref IntPtr[] argv,
ref IntPtr pVtab,
ref IntPtr pError
);
///////////////////////////////////////////////////////////////////////////
#if !PLATFORM_COMPACTFRAMEWORK
................................................................................
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
#endif
public delegate SQLiteErrorCode xConnect(
IntPtr pDb,
IntPtr pAux,
int argc,
[MarshalAs(UnmanagedType.LPArray, SizeParamIndex = 2)]
ref IntPtr[] argv,
ref IntPtr pVtab,
ref IntPtr pError
);
///////////////////////////////////////////////////////////////////////////
#if !PLATFORM_COMPACTFRAMEWORK
................................................................................
}
///////////////////////////////////////////////////////////////////////////
[StructLayout(LayoutKind.Sequential)]
internal struct sqlite3_index_constraint
{
public int iColumn;
public SQLiteIndexConstraintOp op;
public byte usable;
public int iTermOffset;
}
///////////////////////////////////////////////////////////////////////////
[StructLayout(LayoutKind.Sequential)]
internal struct sqlite3_index_orderby
{
public int iColumn; /* Column number */
public byte desc; /* True for DESC. False for ASC. */
}
///////////////////////////////////////////////////////////////////////////
[StructLayout(LayoutKind.Sequential)]
internal struct sqlite3_index_constraint_usage
{
public int argvIndex; /* if >0, constraint is part of argv to xFilter */
public byte omit; /* Do not code a test for this constraint */
}
///////////////////////////////////////////////////////////////////////////
[StructLayout(LayoutKind.Sequential)]
internal struct sqlite3_index_info
{
/* Inputs */
public int nConstraint; /* Number of entries in aConstraint */
[MarshalAs(UnmanagedType.LPArray, SizeParamIndex = 0)]
public sqlite3_index_constraint[] aConstraint;
public int nOrderBy;
[MarshalAs(UnmanagedType.LPArray, SizeParamIndex = 2)]
public sqlite3_index_orderby[] aOrderBy;
/* Outputs */
[MarshalAs(UnmanagedType.LPArray, SizeParamIndex = 0)]
public sqlite3_index_constraint_usage[] aConstraintUsage;
public int idxNum; /* Number used to identify the index */
public string idxStr; /* String, possibly obtained from sqlite3_malloc */
public int needToFreeIdxStr; /* Free idxStr using sqlite3_free() if true */
public int orderByConsumed; /* True if output is already ordered */
public double estimatedCost; /* Estimated cost of using this index */
}
#endregion
|
| | > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > | < < < > < | |
1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 .... 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 .... 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 |
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
#endif
public delegate SQLiteErrorCode xCreate(
IntPtr pDb,
IntPtr pAux,
int argc,
[MarshalAs(UnmanagedType.LPArray, SizeParamIndex = 2)]
IntPtr[] argv,
ref IntPtr pVtab,
ref IntPtr pError
);
///////////////////////////////////////////////////////////////////////////
#if !PLATFORM_COMPACTFRAMEWORK
................................................................................
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
#endif
public delegate SQLiteErrorCode xConnect(
IntPtr pDb,
IntPtr pAux,
int argc,
[MarshalAs(UnmanagedType.LPArray, SizeParamIndex = 2)]
IntPtr[] argv,
ref IntPtr pVtab,
ref IntPtr pError
);
///////////////////////////////////////////////////////////////////////////
#if !PLATFORM_COMPACTFRAMEWORK
................................................................................
}
///////////////////////////////////////////////////////////////////////////
[StructLayout(LayoutKind.Sequential)]
internal struct sqlite3_index_constraint
{
public sqlite3_index_constraint(
SQLiteIndexConstraint constraint
)
: this()
{
if (constraint != null)
{
iColumn = constraint.iColumn;
op = constraint.op;
usable = constraint.usable;
iTermOffset = constraint.iTermOffset;
}
}
///////////////////////////////////////////////////////////////////////
public int iColumn;
public SQLiteIndexConstraintOp op;
public byte usable;
public int iTermOffset;
}
///////////////////////////////////////////////////////////////////////////
[StructLayout(LayoutKind.Sequential)]
internal struct sqlite3_index_orderby
{
public sqlite3_index_orderby(
SQLiteIndexOrderBy orderBy
)
: this()
{
if (orderBy != null)
{
iColumn = orderBy.iColumn;
desc = orderBy.desc;
}
}
///////////////////////////////////////////////////////////////////////
public int iColumn; /* Column number */
public byte desc; /* True for DESC. False for ASC. */
}
///////////////////////////////////////////////////////////////////////////
[StructLayout(LayoutKind.Sequential)]
internal struct sqlite3_index_constraint_usage
{
public sqlite3_index_constraint_usage(
SQLiteIndexConstraintUsage constraintUsage
)
: this()
{
if (constraintUsage != null)
{
argvIndex = constraintUsage.argvIndex;
omit = constraintUsage.omit;
}
}
///////////////////////////////////////////////////////////////////////
public int argvIndex; /* if >0, constraint is part of argv to xFilter */
public byte omit; /* Do not code a test for this constraint */
}
///////////////////////////////////////////////////////////////////////////
[StructLayout(LayoutKind.Sequential)]
internal struct sqlite3_index_info
{
/* Inputs */
public int nConstraint; /* Number of entries in aConstraint */
public IntPtr aConstraint;
public int nOrderBy;
public IntPtr aOrderBy;
/* Outputs */
public IntPtr aConstraintUsage;
public int idxNum; /* Number used to identify the index */
public string idxStr; /* String, possibly obtained from sqlite3_malloc */
public int needToFreeIdxStr; /* Free idxStr using sqlite3_free() if true */
public int orderByConsumed; /* True if output is already ordered */
public double estimatedCost; /* Estimated cost of using this index */
}
#endregion
|