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Overview
| Comment: | Also move the static SQLiteIndex marshalling methods into the SQLiteIndex class itself. |
|---|---|
| Downloads: | Tarball | ZIP archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
82d24cdca30b6d936b31e17ce7ecab34 |
| User & Date: | mistachkin 2013-07-05 22:44:40.130 |
Context
|
2013-07-06
| ||
| 00:16 | Enhance the comments for the SQLiteModuleNoop class. check-in: bf02fc9d80 user: mistachkin tags: trunk | |
|
2013-07-05
| ||
| 22:44 | Also move the static SQLiteIndex marshalling methods into the SQLiteIndex class itself. check-in: 82d24cdca3 user: mistachkin tags: trunk | |
| 22:36 | Move the static SQLiteValue marshalling method into the SQLiteValue class itself. check-in: bd1c5de6ec user: mistachkin tags: trunk | |
Changes
Changes to System.Data.SQLite/SQLiteModule.cs.
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{
pValue = IntPtr.Zero;
}
#endregion
///////////////////////////////////////////////////////////////////////
|
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int nOrderBy
)
{
inputs = new SQLiteIndexInputs(nConstraint, nOrderBy);
outputs = new SQLiteIndexOutputs(nConstraint);
}
#endregion
///////////////////////////////////////////////////////////////////////
#region Internal Marshal Helper Methods
/// <summary>
/// Converts a native pointer to a native sqlite3_index_info structure
/// into a new <see cref="SQLiteIndex" /> object instance.
/// </summary>
/// <param name="pIndex">
/// The native pointer to the native sqlite3_index_info structure to
/// convert.
/// </param>
/// <param name="index">
/// Upon success, this parameter will be modified to contain the newly
/// created <see cref="SQLiteIndex" /> object instance.
/// </param>
internal static void FromIntPtr(
IntPtr pIndex,
ref SQLiteIndex index
)
{
if (pIndex == IntPtr.Zero)
return;
int offset = 0;
int nConstraint = SQLiteMarshal.ReadInt32(pIndex, offset);
offset += sizeof(int);
IntPtr pConstraint = SQLiteMarshal.ReadIntPtr(pIndex, offset);
offset += IntPtr.Size;
int nOrderBy = SQLiteMarshal.ReadInt32(pIndex, offset);
offset += sizeof(int);
IntPtr pOrderBy = SQLiteMarshal.ReadIntPtr(pIndex, offset);
index = new SQLiteIndex(nConstraint, nOrderBy);
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(SQLiteMarshal.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(SQLiteMarshal.IntPtrForOffset(
pOrderBy, iOrderBy * sizeOfOrderByType), orderBy);
index.Inputs.OrderBys[iOrderBy] =
new SQLiteIndexOrderBy(orderBy);
}
}
///////////////////////////////////////////////////////////////////////
/// <summary>
/// Populates the outputs of a pre-allocated native sqlite3_index_info
/// structure using an existing <see cref="SQLiteIndex" /> object
/// instance.
/// </summary>
/// <param name="index">
/// The existing <see cref="SQLiteIndex" /> object instance containing
/// the output data to use.
/// </param>
/// <param name="pIndex">
/// The native pointer to the pre-allocated native sqlite3_index_info
/// structure.
/// </param>
internal static void ToIntPtr(
SQLiteIndex index,
IntPtr pIndex
)
{
if ((index == null) || (index.Inputs == null) ||
(index.Inputs.Constraints == null) ||
(index.Outputs == null) ||
(index.Outputs.ConstraintUsages == null))
{
return;
}
if (pIndex == IntPtr.Zero)
return;
int offset = 0;
int nConstraint = SQLiteMarshal.ReadInt32(pIndex, offset);
if (nConstraint != index.Inputs.Constraints.Length)
return;
if (nConstraint != index.Outputs.ConstraintUsages.Length)
return;
offset += sizeof(int) + IntPtr.Size + sizeof(int) + IntPtr.Size;
IntPtr pConstraintUsage = SQLiteMarshal.ReadIntPtr(pIndex, offset);
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, SQLiteMarshal.IntPtrForOffset(
pConstraintUsage, iConstraint * sizeOfConstraintUsageType),
false);
index.Outputs.ConstraintUsages[iConstraint] =
new SQLiteIndexConstraintUsage(constraintUsage);
}
offset += IntPtr.Size;
SQLiteMarshal.WriteInt32(pIndex, offset,
index.Outputs.IndexNumber);
offset += sizeof(int);
SQLiteMarshal.WriteIntPtr(pIndex, offset,
SQLiteString.Utf8IntPtrFromString(index.Outputs.IndexString));
offset += IntPtr.Size;
//
// NOTE: We just allocated the IndexString field; therefore, we
// need to set the NeedToFreeIndexString field to non-zero.
//
SQLiteMarshal.WriteInt32(pIndex, offset, 1);
offset += sizeof(int);
SQLiteMarshal.WriteInt32(pIndex, offset,
index.Outputs.OrderByConsumed);
offset += sizeof(int);
SQLiteMarshal.WriteDouble(pIndex, offset,
index.Outputs.EstimatedCost);
}
#endregion
///////////////////////////////////////////////////////////////////////
#region Public Properties
private SQLiteIndexInputs inputs;
/// <summary>
/// The <see cref="SQLiteIndexInputs" /> object instance containing
|
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#if !PLATFORM_COMPACTFRAMEWORK
Marshal.WriteIntPtr(pointer, offset, value);
#else
Marshal.WriteIntPtr(IntPtrForOffset(pointer, offset), value);
#endif
}
#endregion
|
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{
SQLiteVirtualTable table = TableFromIntPtr(pVtab);
if (table != null)
{
SQLiteIndex index = null;
|
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