public static void CleanUpNativeData(ref IntPtr pNativeData)
{
if (pNativeData != IntPtr.Zero)
{
XSQLDA xsqlda = Marshal2.PtrToStructure <XSQLDA>(pNativeData);
Marshal2.DestroyStructure <XSQLDA>(pNativeData);
for (var i = 0; i < xsqlda.sqln; i++)
{
IntPtr ptr = GetIntPtr(pNativeData, ComputeLength(i));
var sqlvar = new XSQLVAR();
MarshalXSQLVARNativeToManaged(ptr, sqlvar, true);
if (sqlvar.sqldata != IntPtr.Zero)
{
Marshal.FreeHGlobal(sqlvar.sqldata);
sqlvar.sqldata = IntPtr.Zero;
}
if (sqlvar.sqlind != IntPtr.Zero)
{
Marshal.FreeHGlobal(sqlvar.sqlind);
sqlvar.sqlind = IntPtr.Zero;
}
Marshal2.DestroyStructure <XSQLVAR>(ptr);
}
Marshal.FreeHGlobal(pNativeData);
pNativeData = IntPtr.Zero;
}
}
public byte[] GetSecBufferBytes()
{
if (pBuffers == IntPtr.Zero)
{
throw new ObjectDisposedException(nameof(SecBufferDesc));
}
SecBuffer secBuffer = Marshal2.PtrToStructure <SecBuffer>(pBuffers);
return(secBuffer.GetBytes());
}
public void Dispose()
{
if (pBuffers != IntPtr.Zero)
{
SecBuffer secBuffer = Marshal2.PtrToStructure <SecBuffer>(pBuffers);
secBuffer.Dispose();
Marshal.FreeHGlobal(pBuffers);
pBuffers = IntPtr.Zero;
}
}
public static Descriptor MarshalNativeToManaged(Charset charset, IntPtr pNativeData, bool fetching)
{
// Obtain XSQLDA information
var xsqlda = Marshal2.PtrToStructure <XSQLDA>(pNativeData);
// Create a new Descriptor
var descriptor = new Descriptor(xsqlda.sqln)
{
ActualCount = xsqlda.sqld
};
// Obtain XSQLVAR members information
var xsqlvar = new XSQLVAR();
for (var i = 0; i < xsqlda.sqln; i++)
{
var ptr = GetIntPtr(pNativeData, ComputeLength(i));
MarshalXSQLVARNativeToManaged(ptr, xsqlvar);
// Map XSQLVAR information to Descriptor
descriptor[i].DataType = xsqlvar.sqltype;
descriptor[i].NumericScale = xsqlvar.sqlscale;
descriptor[i].SubType = xsqlvar.sqlsubtype;
descriptor[i].Length = xsqlvar.sqllen;
// Decode sqlind value
descriptor[i].NullFlag = xsqlvar.sqlind == IntPtr.Zero
? (short)0
: Marshal.ReadInt16(xsqlvar.sqlind);
// Set value
if (fetching)
{
if (descriptor[i].NullFlag != -1)
{
descriptor[i].SetValue(GetBytes(xsqlvar));
}
}
descriptor[i].Name = GetString(charset, xsqlvar.sqlname, xsqlvar.sqlname_length);
descriptor[i].Relation = GetString(charset, xsqlvar.relname, xsqlvar.relname_length);
descriptor[i].Owner = GetString(charset, xsqlvar.ownername, xsqlvar.ownername_length);
descriptor[i].Alias = GetString(charset, xsqlvar.aliasname, xsqlvar.aliasname_length);
}
return(descriptor);
}
public static void CleanUpNativeData(ref IntPtr pNativeData)
{
if (pNativeData != IntPtr.Zero)
{
// Obtain XSQLDA information
XSQLDA xsqlda = Marshal2.PtrToStructure <XSQLDA>(pNativeData);
// Destroy XSQLDA structure
Marshal2.DestroyStructure <XSQLDA>(pNativeData);
// Destroy XSQLVAR structures
for (var i = 0; i < xsqlda.sqln; i++)
{
IntPtr ptr = GetIntPtr(pNativeData, ComputeLength(i));
// Free sqldata and sqlind pointers if needed
var sqlvar = new XSQLVAR();
MarshalXSQLVARNativeToManaged(ptr, sqlvar, true);
if (sqlvar.sqldata != IntPtr.Zero)
{
Marshal.FreeHGlobal(sqlvar.sqldata);
sqlvar.sqldata = IntPtr.Zero;
}
if (sqlvar.sqlind != IntPtr.Zero)
{
Marshal.FreeHGlobal(sqlvar.sqlind);
sqlvar.sqlind = IntPtr.Zero;
}
Marshal2.DestroyStructure <XSQLVAR>(ptr);
}
// Free pointer memory
Marshal.FreeHGlobal(pNativeData);
pNativeData = IntPtr.Zero;
}
}