HyperIoT Framework allows some repository methods to be invoked by
passing HyperIoTQuery as an argument. This class represents the
abstraction (which will be exploited more and more within the
framework) to implement custom query logic that is, however, agnostic
to the currently used persistence layer.
To create custom queries, one can use the dedicated
HyperIoTQueryBuilder :
HyperIoTQuery idFilter = HyperIoTQueryBuilder.newQuery().equals("id", id);
Currently there is no particularly complex logic in fact it is also
possible to perform articulated queries on entities:
HyperIoTQueryBuilder.newQuery().equals(ownedRes.getOwnerFieldPath(), ctx.getLoggedEntityId())
.or(HyperIoTQueryBuilder.newQuery().in("id", entityIds));
The use of such a component is strongly recommended because in
future versions it will increasingly allow generic queries to be
written, being able to then convert them to different repository
technologies such as traditional relational databases or noSQL.
