Example #1
0
  /**
   * 解析数据关联关系
   *
   * @param list
   * @param fieldName
   * @param keyMethod
   * @param table
   * @param refKey
   * @param ids
   * @throws NoSuchFieldException
   * @throws NoSuchMethodException
   * @throws IllegalAccessException
   * @throws InvocationTargetException
   */
  private void parseReference(
      List<T> list,
      String fieldName,
      Method keyMethod,
      String table,
      String refKey,
      StringBuffer ids)
      throws NoSuchFieldException, NoSuchMethodException, IllegalAccessException,
          InvocationTargetException {
    Coupler<Entity> childCoupler = childCouplers.get(fieldName);
    Class<Entity> childClass = childCoupler.getClazz();
    TreeDao<Entity> childDao = DaoFactory.getTreeDao(childClass);

    String childSql = buildChildQuerySql(table, refKey, ids, ordersMap, fieldName);

    if (entityClass == childClass) {
      int count = dao.count(childSql);
      if (count == 0) {
        return;
      }
    }

    List<Entity> childEntities = childDao.queryForTree(childSql);

    Class<?> fileType = entityClass.getDeclaredField(fieldName).getType();
    if (fileType == List.class) {
      setListValue(list, keyMethod, fieldName, childEntities, childClass, refKey);
    } else {
      setSingleValue(list, keyMethod, fieldName, childEntities, childClass, fileType, refKey);
    }
  }
Example #2
0
 public SimpleTreeDao(Class<T> clazz) {
   this.entityClass = clazz;
   dao = DaoFactory.getDao(entityClass);
   treeCoupler = CouplerFactory.getTreeCoupler(entityClass);
   coupler = treeCoupler.getCoupler();
   childCouplers = treeCoupler.getChildCouplers();
   oneToOneMap = coupler.getOneToOneMap();
   oneToManyMap = coupler.getOneToManyMap();
   manyToOneMap = coupler.getManyToOneMap();
   ordersMap = coupler.getOrdersMap();
 }
Example #3
0
  /**
   * 树形结构的数据查询
   *
   * @param sql
   * @param values
   * @return
   */
  @Override
  public List<T> queryForTree(String sql, Object... values) {
    List<T> list = dao.find(sql, values);
    if (list == null || list.isEmpty()) {
      return list;
    }

    if (childCouplers.isEmpty()) {
      return list;
    }

    try {
      Method majorMethod = entityClass.getDeclaredMethod(coupler.getMajorFieldGetterName());

      StringBuffer ids = new StringBuffer();
      int i = 0;
      for (Entity entity : list) {
        ids.append(majorMethod.invoke(entity));
        if (i++ < list.size() - 1) {
          ids.append(",");
        }
      }

      for (String fieldName : oneToOneMap.keySet()) {
        OneToOne oneToOne = oneToOneMap.get(fieldName);
        String table = oneToOne.table();
        String refKey = oneToOne.foreignKey();
        parseReference(list, fieldName, majorMethod, table, refKey, ids);
      }
      for (String fieldName : oneToManyMap.keySet()) {
        OneToMany oneToMany = oneToManyMap.get(fieldName);
        String table = oneToMany.table();
        String refKey = oneToMany.foreignKey();
        parseReference(list, fieldName, majorMethod, table, refKey, ids);
      }
      for (String fieldName : manyToOneMap.keySet()) {
        ManyToOne manyToOne = manyToOneMap.get(fieldName);
        String table = manyToOne.table();
        String refKey = manyToOne.referenceKey();
        Method keyMethod =
            entityClass.getDeclaredMethod("get".concat(StringUtils.firstToUpperCase(refKey)));
        StringBuffer refIds = new StringBuffer();
        int j = 0;
        for (Entity entity : list) {
          refIds.append(keyMethod.invoke(entity));
          if (j++ < list.size() - 1) {
            refIds.append(",");
          }
        }
        parseReference(list, fieldName, keyMethod, table, refKey, refIds);
      }
    } catch (NoSuchMethodException e) {
      log.error("SimpleTreeDao.queryForTree throws NoSuchMethodException", e);
    } catch (InvocationTargetException e) {
      log.error("SimpleTreeDao.queryForTree throws InvocationTargetException", e);
    } catch (IllegalAccessException e) {
      log.error("SimpleTreeDao.queryForTree throws IllegalAccessException", e);
    } catch (NoSuchFieldException e) {
      log.error("SimpleTreeDao.queryForTree throws NoSuchFieldException", e);
    }
    return list;
  }