private Dictionary<string, GenericField> GetTableDef()
{
if (mAllTableDefs == null)
DoOnetimeInits();
if (mAllTableDefs.ContainsKey(mFullTablePath))
return mAllTableDefs[mFullTablePath];
bool HasIdField = false;
//remove brakets
string tableName = mTableName.Substring(1, mTableName.Length - 2);
string sel = "select a.name,a.length,a.xtype,a.colstat, a.iscomputed from syscolumns as a " +
"inner join sysobjects as b on a.id = b.id " +
"where b.name = '" + tableName + "'";
Dictionary<string, GenericField> def = new Dictionary<string, GenericField>();
mHasIdentityCache[mFullTablePath] = false;
DataTable oResult = mSqlUtil.ExecuteSingleResultSetSQLQuery(sel);
Type DbtypeEnum = typeof(MyDbTypes);
foreach (DataRow oRow in oResult.Rows) {
if (oRow["name"].Equals(mIdColumn)) {
mIdColumnHash[mFullTablePath] = mIdColumn;
HasIdField = true;
if ((short)oRow["colstat"] == 1 || (short)oRow["colstat"] == 9)
mHasIdentityCache[mFullTablePath] = true;
} else {
GenericField f = new GenericField();
f.mType = (byte)oRow["xtype"];
f.mLength = (short)oRow["length"];
if (!Enum.IsDefined(DbtypeEnum, f.mType))
throw new Exception(mFullTablePath + ":undefined DBtype " + f.mType
+ " for field " + (string)oRow["name"]);
f.mEncrypted = DBMetaData.isColumnEncrypted(mFullTablePath, (string)oRow["name"]);
if (f.mEncrypted && (f.mType != (int)MyDbTypes.String && f.mType != (int)MyDbTypes.Image)) {
throw new Exception(mFullTablePath + ":Column " + (string)oRow["name"] + " is not type varchar and cannot be set as an encrypted column.");
}
def[(string)oRow["name"]] = f;
if ((int)oRow["iscomputed"] == 1) {
f.mReadOnly = true;
}
}
}
if (!HasIdField)
return null;
mAllTableDefs[mFullTablePath] = def;
return def;
}
private void EncryptCol(ref object FieldValue, GenericField gf, string FieldName)
{
switch (gf.mType) {
case (int)MyDbTypes.String:
FieldValue = EncryptionUtil.SimpleEncrypt((string)mData[FieldName], FieldName);
break;
case (int)MyDbTypes.Image:
FieldValue = EncryptionUtil.SimpleEncrypt((byte[])mData[FieldName], FieldName);
break;
}
}