示例#1
0
  private <T extends ObjectFilter> Restriction findAndCreateRestriction(
      T filter, InterpretationContext context, Restriction parent) throws QueryException {

    Validate.notNull(filter, "filter");
    Validate.notNull(context, "context");

    LOGGER.trace("Determining restriction for filter {}", filter);

    ItemPathResolver helper = context.getItemPathResolver();
    JpaEntityDefinition baseEntityDefinition;
    if (parent != null) {
      baseEntityDefinition = parent.getBaseHqlEntityForChildren().getJpaDefinition();
    } else {
      baseEntityDefinition = context.getRootEntityDefinition();
    }
    Restriction restriction =
        findAndCreateRestrictionInternal(filter, context, parent, helper, baseEntityDefinition);

    LOGGER.trace("Restriction for {} is {}", filter.getClass().getSimpleName(), restriction);
    return restriction;
  }
示例#2
0
  private void addOrdering(InterpretationContext context, ObjectOrdering ordering)
      throws QueryException {

    ItemPath orderByPath = ordering.getOrderBy();

    // TODO if we'd like to have order-by extension properties, we'd need to provide itemDefinition
    // for them
    ProperDataSearchResult<JpaDataNodeDefinition> result =
        context
            .getItemPathResolver()
            .findProperDataDefinition(
                context.getRootEntityDefinition(), orderByPath, null, JpaDataNodeDefinition.class);
    if (result == null) {
      LOGGER.error(
          "Unknown path '"
              + orderByPath
              + "', couldn't find definition for it, "
              + "list will not be ordered by it.");
      return;
    }
    JpaDataNodeDefinition targetDefinition = result.getLinkDefinition().getTargetDefinition();
    if (targetDefinition instanceof JpaAnyContainerDefinition) {
      throw new QueryException(
          "Sorting based on extension item or attribute is not supported yet: " + orderByPath);
    } else if (targetDefinition instanceof JpaReferenceDefinition) {
      throw new QueryException("Sorting based on reference is not supported: " + orderByPath);
    } else if (result.getLinkDefinition().isMultivalued()) {
      throw new QueryException(
          "Sorting based on multi-valued item is not supported: " + orderByPath);
    } else if (targetDefinition instanceof JpaEntityDefinition) {
      throw new QueryException("Sorting based on entity is not supported: " + orderByPath);
    } else if (!(targetDefinition instanceof JpaPropertyDefinition)) {
      throw new IllegalStateException("Unknown item definition type: " + result.getClass());
    }

    JpaEntityDefinition baseEntityDefinition = result.getEntityDefinition();
    JpaPropertyDefinition orderByDefinition = (JpaPropertyDefinition) targetDefinition;
    String hqlPropertyPath =
        context
            .getItemPathResolver()
            .resolveItemPath(
                orderByPath, null, context.getPrimaryEntityAlias(), baseEntityDefinition, true)
            .getHqlPath();
    if (RPolyString.class.equals(orderByDefinition.getJpaClass())) {
      hqlPropertyPath += ".orig";
    }

    RootHibernateQuery hibernateQuery = context.getHibernateQuery();
    if (ordering.getDirection() != null) {
      switch (ordering.getDirection()) {
        case ASCENDING:
          hibernateQuery.addOrdering(hqlPropertyPath, OrderDirection.ASCENDING);
          break;
        case DESCENDING:
          hibernateQuery.addOrdering(hqlPropertyPath, OrderDirection.DESCENDING);
          break;
      }
    } else {
      hibernateQuery.addOrdering(hqlPropertyPath, OrderDirection.ASCENDING);
    }
  }