public IResultSet Search(IQuery query)
{
EnsureConnected();
IntPtr yazQuery = Yaz.ZOOM_query_create();
ResultSet resultSet = null;
try {
// branching out to right YAZ-C call
if (query is ICQLQuery)
{
Yaz.ZOOM_query_cql(yazQuery, query.QueryString);
}
else if (query is IPrefixQuery)
{
Yaz.ZOOM_query_prefix(yazQuery, query.QueryString);
}
else
{
throw new NotImplementedException();
}
IntPtr yazResultSet = Yaz.ZOOM_connection_search(_zoomConnection, yazQuery);
// error checking C-style
int errorCode = Yaz.ZOOM_connection_errcode(_zoomConnection);
if (errorCode != Yaz.ZOOM_ERROR_NONE)
{
Yaz.ZOOM_resultset_destroy(yazResultSet);
}
CheckErrorCodeAndThrow(errorCode);
// everything ok, create result set
resultSet = new ResultSet(yazResultSet, this);
}
finally {
// deallocate yazQuery also when exceptions
Yaz.ZOOM_query_destroy(yazQuery);
yazQuery = IntPtr.Zero;
}
return(resultSet);
}