|
private IsSupersetOf ( |
||
| entry | ||
| return | bool | |
internal bool IsSupersetOf(DBConnectionString entry)
{
Debug.Assert(!_hasPassword || ContainsKey(KEY.Password) || ContainsKey(KEY.Pwd), "OnDeserialized password mismatch this");
Debug.Assert(!entry._hasPassword || entry.ContainsKey(KEY.Password) || entry.ContainsKey(KEY.Pwd), "OnDeserialized password mismatch entry");
switch (_behavior)
{
case KeyRestrictionBehavior.AllowOnly:
// every key must either be in the resticted connection string or in the allowed keywords
// keychain may contain duplicates, but it is better than GetEnumerator on _parsetable.Keys
for (NameValuePair current = entry.KeyChain; null != current; current = current.Next)
{
if (!ContainsKey(current.Name) && IsRestrictedKeyword(current.Name))
{
return false;
}
}
break;
case KeyRestrictionBehavior.PreventUsage:
// every key can not be in the restricted keywords (even if in the restricted connection string)
if (null != _restrictionValues)
{
foreach (string restriction in _restrictionValues)
{
if (entry.ContainsKey(restriction))
{
return false;
}
}
}
break;
default:
Debug.Assert(false, "invalid KeyRestrictionBehavior");
throw ADP.InvalidKeyRestrictionBehavior(_behavior);
}
return true;
}
internal bool CheckValueForKeyPermit(DBConnectionString parsetable)
{
if (parsetable == null)
{
return(false);
}
bool isEmpty = false;
NameValuePermission[] permissionArray = this._tree;
if (permissionArray != null)
{
isEmpty = parsetable.IsEmpty;
if (!isEmpty)
{
for (int i = 0; i < permissionArray.Length; i++)
{
NameValuePermission permission = permissionArray[i];
if (permission != null)
{
string keyword = permission._value;
if (parsetable.ContainsKey(keyword))
{
string keyInQuestion = parsetable[keyword];
NameValuePermission permission2 = permission.CheckKeyForValue(keyInQuestion);
if ((permission2 != null) && permission2.CheckValueForKeyPermit(parsetable))
{
isEmpty = true;
}
else
{
return(false);
}
}
}
}
}
}
DBConnectionString str = this._entry;
if (str != null)
{
isEmpty = str.IsSupersetOf(parsetable);
}
return(isEmpty);
}