internal string GetLiteralInfo(int literal)
{
using (IDBInfoWrapper wrapper = this.IDBInfo())
{
OleDbHResult result;
System.Data.Common.UnsafeNativeMethods.IDBInfo dbInfo = wrapper.Value;
if (dbInfo == null)
{
return(null);
}
string str = null;
IntPtr ptrZero = ADP.PtrZero;
int literalCount = 0;
using (new DualCoTaskMem(dbInfo, new int[] { literal }, out literalCount, out ptrZero, out result))
{
if (OleDbHResult.DB_E_ERRORSOCCURRED != result)
{
if ((1 == literalCount) && (Marshal.ReadInt32(ptrZero, ODB.OffsetOf_tagDBLITERALINFO_it) == literal))
{
str = Marshal.PtrToStringUni(Marshal.ReadIntPtr(ptrZero, 0));
}
if (result < OleDbHResult.S_OK)
{
this.ProcessResults(result);
}
}
else
{
SafeNativeMethods.Wrapper.ClearErrorInfo();
}
}
return(str);
}
}
internal bool AddInfoKeywordsToTable(DataTable table, DataColumn keyword)
{
using (IDBInfoWrapper wrapper = this.IDBInfo())
{
string str;
System.Data.Common.UnsafeNativeMethods.IDBInfo info = wrapper.Value;
if (info == null)
{
return(false);
}
Bid.Trace("<oledb.IDBInfo.GetKeywords|API|OLEDB> %d#\n", base.ObjectID);
OleDbHResult keywords = info.GetKeywords(out str);
Bid.Trace("<oledb.IDBInfo.GetKeywords|API|OLEDB|RET> %08X{HRESULT}\n", keywords);
if (keywords < OleDbHResult.S_OK)
{
this.ProcessResults(keywords);
}
if (str != null)
{
string[] strArray = str.Split(new char[] { ',' });
for (int i = 0; i < strArray.Length; i++)
{
DataRow row = table.NewRow();
row[keyword] = strArray[i];
table.Rows.Add(row);
row.AcceptChanges();
}
}
return(true);
}
}
internal DataTable BuildInfoLiterals()
{
using (IDBInfoWrapper wrapper = this.IDBInfo())
{
OleDbHResult result;
System.Data.Common.UnsafeNativeMethods.IDBInfo dbInfo = wrapper.Value;
if (dbInfo == null)
{
return(null);
}
DataTable table = new DataTable("DbInfoLiterals")
{
Locale = CultureInfo.InvariantCulture
};
DataColumn column6 = new DataColumn("LiteralName", typeof(string));
DataColumn column5 = new DataColumn("LiteralValue", typeof(string));
DataColumn column4 = new DataColumn("InvalidChars", typeof(string));
DataColumn column3 = new DataColumn("InvalidStartingChars", typeof(string));
DataColumn column2 = new DataColumn("Literal", typeof(int));
DataColumn column = new DataColumn("Maxlen", typeof(int));
table.Columns.Add(column6);
table.Columns.Add(column5);
table.Columns.Add(column4);
table.Columns.Add(column3);
table.Columns.Add(column2);
table.Columns.Add(column);
int literalCount = 0;
IntPtr ptrZero = ADP.PtrZero;
using (new DualCoTaskMem(dbInfo, null, out literalCount, out ptrZero, out result))
{
if (OleDbHResult.DB_E_ERRORSOCCURRED != result)
{
long num2 = ptrZero.ToInt64();
tagDBLITERALINFO structure = new tagDBLITERALINFO();
int num = 0;
while (num < literalCount)
{
Marshal.PtrToStructure((IntPtr)num2, structure);
DataRow row = table.NewRow();
row[column6] = ((OleDbLiteral)structure.it).ToString();
row[column5] = structure.pwszLiteralValue;
row[column4] = structure.pwszInvalidChars;
row[column3] = structure.pwszInvalidStartingChars;
row[column2] = structure.it;
row[column] = structure.cchMaxLen;
table.Rows.Add(row);
row.AcceptChanges();
num++;
num2 += ODB.SizeOf_tagDBLITERALINFO;
}
if (result < OleDbHResult.S_OK)
{
this.ProcessResults(result);
}
}
else
{
SafeNativeMethods.Wrapper.ClearErrorInfo();
}
}
return(table);
}
}
