// Run a prepared query.
func (query *Query) Run() (*Docs, error) {
docs := &Docs{}
query.lock.Lock()
defer query.lock.Unlock()
if !query.opened {
return docs, errqueryclosed
}
docs.docs = C.c_dbxml_run_query(query.query)
if C.c_dbxml_get_query_error(docs.docs) != 0 {
defer C.c_dbxml_docs_free(docs.docs)
return docs, errors.New(C.GoString(C.c_dbxml_get_query_errstring(docs.docs)))
}
runtime.SetFinalizer(docs, (*Docs).Close)
docs.opened = true
return docs, nil
}
// Iterate to the next xml document in the list, that was returned by db.All(), db.Query(query), or query.Run().
func (docs *Docs) Next() bool {
docs.lock.Lock()
defer docs.lock.Unlock()
if !docs.opened {
return false
}
docs.err = nil
if C.c_dbxml_docs_next(docs.docs) == 0 {
if C.c_dbxml_get_query_error(docs.docs) != 0 {
docs.err = errors.New(C.GoString(C.c_dbxml_get_query_errstring(docs.docs)))
}
docs.close()
docs.started = false
return false
}
docs.started = true
return true
}