/** \fn bool IsCollectionExist(string colName)
* \brief Verify the existence of collection in current colleciont space
* \param colName The collection name
* \return True if collection existed or False if not existed
* \exception SequoiaDB.BaseException
* \exception System.Exception
*/
public bool IsCollectionExist(string colName)
{
string command = SequoiadbConstants.ADMIN_PROMPT + SequoiadbConstants.TEST_CMD + " "
+ SequoiadbConstants.COLLECTION;
BsonDocument condition = new BsonDocument();
BsonDocument dummyObj = new BsonDocument();
string fullName = this.Name + "." + colName;
condition.Add(SequoiadbConstants.FIELD_NAME, fullName);
SDBMessage rtn = AdminCommand(command, condition, dummyObj, dummyObj, dummyObj);
int flags = rtn.Flags;
if (flags == 0)
{
sdb.UpsertCache(fullName);
return(true);
}
else if (flags == (int)Errors.errors.SDB_DMS_NOTEXIST)
{
sdb.RemoveCache(fullName);
return(false);
}
else
{
throw new BaseException(flags);
}
}