func deleteImplications(store *storage.Storage, tx *storage.Tx, tagArgs []string) (error, warnings) {
log.Infof(2, "loading settings")
implyingTagArg := tagArgs[0]
impliedTagArgs := tagArgs[1:]
implyingTagName, implyingValueName := parseTagEqValueName(implyingTagArg)
implyingTag, err := store.TagByName(tx, implyingTagName)
if err != nil {
return err, nil
}
if implyingTag == nil {
return NoSuchTagError{implyingTagName}, nil
}
implyingValue, err := store.ValueByName(tx, implyingValueName)
if err != nil {
return err, nil
}
if implyingValue == nil {
return NoSuchValueError{implyingValueName}, nil
}
warnings := make(warnings, 0, 10)
for _, impliedTagArg := range impliedTagArgs {
log.Infof(2, "removing tag implication %v -> %v.", implyingTagArg, impliedTagArg)
impliedTagName, impliedValueName := parseTagEqValueName(impliedTagArg)
impliedTag, err := store.TagByName(tx, impliedTagName)
if err != nil {
return err, warnings
}
if impliedTag == nil {
warnings = append(warnings, fmt.Sprintf("no such tag '%v'", impliedTagName))
}
impliedValue, err := store.ValueByName(tx, impliedValueName)
if err != nil {
return err, warnings
}
if impliedValue == nil {
warnings = append(warnings, fmt.Sprintf("no such value '%v'", impliedValueName))
}
if err := store.DeleteImplication(tx, entities.TagIdValueIdPair{implyingTag.Id, implyingValue.Id}, entities.TagIdValueIdPair{impliedTag.Id, impliedValue.Id}); err != nil {
return fmt.Errorf("could not delete tag implication of %v to %v: %v", implyingTagArg, impliedTagArg, err), warnings
}
}
return nil, warnings
}