Examples with EntityRepository org.polymap.model2.runtime.EntityRepository used on opensource projects

Example 1 with EntityRepository

use of org.polymap.model2.runtime.EntityRepository in project polymap4-core by Polymap4.

the class ProjectNode method findUserSettings.

/**
 */
protected <N extends ProjectNode, U extends UserSettings> U findUserSettings(Class<U> userSettingsType, Association<N> backAssoc) {
    String username = SecurityContext.instance().getUser().getName();
    // give every instance its own UnitOfWork; so modifications can be
    // AutoCommit without interfering with the main UnitOfWork
    EntityRepository repo = context.getRepository();
    UnitOfWork uow = repo.newUnitOfWork();
    U template = Expressions.template(userSettingsType, repo);
    ResultSet<U> rs = uow.query(userSettingsType).where(and(is(backAssoc, (N) ProjectNode.this), eq(template.username, username))).maxResults(2).execute();
    assert rs.size() >= 0 || rs.size() <= 1 : "Illegal result set size: " + rs.size();
    // not found
    if (rs.size() == 0) {
        U result = uow.createEntity(userSettingsType, null, (U proto) -> {
            ProjectNode localNode = uow.entity(ProjectNode.this);
            ((Association) backAssoc.info().get(proto)).set(localNode);
            proto.username.set(username);
            return proto;
        });
        uow.commit();
        return uow.entity(result);
    } else // found
    {
        return rs.stream().findAny().get();
    }
}