/**
   * 多对多级联删除 1.如果主对象不存在与数据库,不处理 2.否则,检查当前主对象中的关联对象,如果关联对象为空,则删除所有与主对象有关的关联关系。
   * 3.如果当前主对象中含有关联对象,则删除这些关联对象与主对象的关系 4.不会删除主对象
   */
  public void delete() throws DAOException {
    if (this.fields == null || this.fields.size() == 0) return;

    // "delete from {relTable} WHERE {from} = {idVal} ;"
    String format = "delete from %s WHERE %s = ? ";
    if (idVal == null || "0".equals(idVal) || "".equals(idVal)) return;
    else if (DAOFactory.getSelectDAO(dsName).selectOne(t, this.idField) == null) return;

    for (Field f : fields) {
      Method tarGetter = ru.getGetter(f.getName());
      if (tarGetter == null) continue;

      ManyToMany ann = tarGetter.getAnnotation(ManyToMany.class);
      if (ann == null) {
        ann = f.getAnnotation(ManyToMany.class);
        if (ann == null) continue;
      }

      JoinTable join = tarGetter.getAnnotation(JoinTable.class);
      if (join == null) {
        join = f.getAnnotation(JoinTable.class);
        if (join == null) continue;
      }

      JoinColumn[] froms = join.joinColumns();
      if (froms == null || froms.length == 0) continue;

      JoinColumn[] tos = join.inverseJoinColumns();
      if (tos == null || tos.length == 0) continue;

      String relTable = join.name();
      String from = froms[0].name();

      List<?> tarList = null;

      try {
        tarList = (List<?>) tarGetter.invoke(t);
      } catch (Exception e) {
        throw new DAOException(tarGetter + " invoke exception ", e);
      }

      if (tarList == null || tarList.size() == 0) {
        String sql = String.format(format, relTable, from);
        // 删除所有关联记录
        DAOFactory.getUpdateDAO(dsName).updateBySQLWithArgs(sql, idVal);
      } else {
        // 删除指定关联的记录
        String to = tos[0].name();
        Class<?> tarClass = ann.targetEntity();
        if (void.class.isAssignableFrom(tarClass)) {
          tarClass = ClassUtil.getGenericType(f);
        }

        // "delete from {relTable} where {from} = {idVal} and to = {toVal}"
        String _format = "delete from %s where %s = ? and %s = ?";
        for (int i = 0; i < tarList.size(); i++) {
          Object tarObj = tarList.get(i);
          if (tarObj == null) continue;
          ReflectUtil tarRu = new ReflectUtil(tarObj);
          String tarIdField = ORMConfigBeanUtil.getIdField(tarClass);
          Method tarIdGetter = tarRu.getGetter(tarIdField);
          Object toValObj = null;

          try {
            toValObj = tarIdGetter.invoke(tarObj);
          } catch (Exception e) {
            throw new DAOException(tarIdGetter + "invoke exception ", e);
          }

          if (toValObj == null) continue;

          String toVal = String.valueOf(toValObj);
          if (DAOFactory.getSelectDAO(dsName)
                  .selectOne(tarClass, new String[] {tarIdField}, new String[] {toVal})
              == null) continue;

          String _sql = String.format(_format, relTable, from, to);
          DAOFactory.getUpdateDAO(dsName).updateBySQLWithArgs(_sql, idVal, toVal);
        }
      }
    }
  }
示例#2
0
  public static <T> Number[] batchUpdate(T[] ts, String... fields) {
    if (ts == null || ts.length == 0) return null;

    return DAOFactory.getUpdateDAO().batchUpdate(ts, fields);
  }
示例#3
0
  public static <T> Number[] batchUpdate(String dsName, T[] ts, String[] fields, Object[] values) {
    if (ts == null || ts.length == 0) return null;

    return DAOFactory.getUpdateDAO(dsName).batchUpdate(ts, fields, values);
  }
  private Object[] assemParams(Class<?>[] paramTypes, Annotation[][] paramAnns) throws Exception {
    Object[] params = new Object[paramTypes.length];
    int pathParamIndex = 0;
    for (int i = 0; i < paramTypes.length; ++i) {
      Annotation[] anns = paramAnns[i];
      Class<?> paramClass = paramTypes[i];
      String[] paramValue = null;
      // ------------------------------------------------------
      // 通过给定class 获取对应的ActionContextObj
      if (Context.class.isAssignableFrom(paramClass)) {
        params[i] = this.context;
        continue;
      }

      if (HttpServletRequest.class.isAssignableFrom(paramClass)) {
        params[i] = this.context.getRequest();
        continue;
      }

      if (HttpServletResponse.class.isAssignableFrom(paramClass)) {
        params[i] = this.context.getResponse();
        continue;
      }

      if (PrintWriter.class.isAssignableFrom(paramClass)) {
        params[i] = this.context.getWriter();
        continue;
      }

      if (ServletOutputStream.class.isAssignableFrom(paramClass)) {
        params[i] = this.context.getOut();
        continue;
      }

      if (HttpSession.class.isAssignableFrom(paramClass)) {
        params[i] = this.context.getSession();
        continue;
      }

      if (ActionProp.class.isAssignableFrom(paramClass)) {
        if (this.context.getActionProp() == null)
          this.context.setActionProp(new ActionProp(this.actionObject.getClass().getName()));

        params[i] = this.context.getActionProp();
        continue;
      }

      if (Validation.class.isAssignableFrom(paramClass)) {
        params[i] = this.context.getValidation();
        continue;
      }

      if (QueryParams.class.isAssignableFrom(paramClass)) {
        params[i] = this.context.getQueryParams();
        continue;
      }

      if (DAO.class.isAssignableFrom(paramClass)) {
        params[i] = new DAOImpl("");
        continue;
      }

      if (InsertDAO.class.isAssignableFrom(paramClass)) {
        params[i] = DAOFactory.getInsertDAO();
        continue;
      }

      if (DeleteDAO.class.isAssignableFrom(paramClass)) {
        params[i] = DAOFactory.getDeleteDAO();
        continue;
      }

      if (UpdateDAO.class.isAssignableFrom(paramClass)) {
        params[i] = DAOFactory.getUpdateDAO();
        continue;
      }

      if (SelectDAO.class.isAssignableFrom(paramClass)) {
        params[i] = DAOFactory.getSelectDAO();
        continue;
      }

      if (DivPageDAO.class.isAssignableFrom(paramClass)) {
        params[i] = DAOFactory.getDivPageDAO();
        continue;
      }

      if (SearchDAO.class.isAssignableFrom(paramClass)) {
        params[i] = DAOFactory.getSearchDAO();
        continue;
      }

      if (CascadeDAO.class.isAssignableFrom(paramClass)) {
        params[i] = DAOFactory.getCascadeDAO();
        continue;
      }

      PathParam pathParamAnn = this.getPathParamAnn(anns);
      if (pathParamAnn != null) {
        paramValue = this.getPathParamValue(pathParamAnn.value());
        params[i] = ClassUtil.getParamVal(paramClass, paramValue[0]);
        continue;
      }

      QueryParam queryParamAnn = this.getQueryParamAnn(anns);

      // 视图模型
      if (queryParamAnn == null && Map.class.isAssignableFrom(paramClass)) {
        params[i] = this.context.getModel();
        continue;
      }

      if (queryParamAnn != null) {
        final String fieldName = queryParamAnn.value();
        if (File.class.isAssignableFrom(paramClass)) {
          if (!this.context.getUploadMap().containsKey(fieldName)) continue;
          List<UploadFile> list = this.context.getUploadMap().get(fieldName);
          if (list == null || list.isEmpty()) continue;

          UploadFile uploadFile = list.get(0);
          File file = uploadFile.getTmpFile();
          params[i] = file;

          continue;
        }

        if (File[].class.isAssignableFrom(paramClass)) {
          if (!this.context.getUploadMap().containsKey(fieldName)) continue;
          List<UploadFile> list = this.context.getUploadMap().get(fieldName);
          if (list == null || list.isEmpty()) continue;
          File[] files = new File[list.size()];
          for (int j = 0; j < files.length; j++) files[j] = list.get(j).getTmpFile();

          params[i] = files;
        }

        if (UploadFile.class.isAssignableFrom(paramClass)) {
          if (!this.context.getUploadMap().containsKey(fieldName)) continue;
          List<UploadFile> list = this.context.getUploadMap().get(fieldName);
          if (list == null || list.isEmpty()) continue;

          UploadFile uploadFile = list.get(0);
          params[i] = uploadFile;

          continue;
        }

        if (UploadFile[].class.isAssignableFrom(paramClass)) {
          if (!this.context.getUploadMap().containsKey(fieldName)) continue;
          List<UploadFile> list = this.context.getUploadMap().get(fieldName);
          if (list == null || list.isEmpty()) continue;

          params[i] = list.toArray(new UploadFile[] {});
        }

        String defaultValue = null;
        DefaultValue defaultValueAnn = this.getDefaultValueAnn(anns);
        if (defaultValueAnn != null) defaultValue = defaultValueAnn.value();

        paramValue = this.getQueryParamValue(fieldName, defaultValue);

        if (java.util.Date.class.isAssignableFrom(paramClass)) {
          params[i] = this.getDateParam(anns, paramValue[0]);
          continue;
        }

        String startName = fieldName;
        if (ClassUtil.isPojo(paramClass)) {
          params[i] = this.injectParam2Pojo(paramClass, startName);
          continue;
        }

        if (Map.class.isAssignableFrom(paramClass)) {
          params[i] = this.injectParam2Map(startName);
          continue;
        }

        if (paramClass.isArray()) params[i] = ClassUtil.getParamVals(paramClass, paramValue);
        else params[i] = ClassUtil.getParamVal(paramClass, paramValue[0]);
      } else {
        // 如果是基本数据类型,则按照排序进行注入
        String[] pathParams = this.context.getActionConfigBean().getPathParams();
        if (pathParams == null) {
          log.warn("QueryParam not found and PathParam not found too");
          continue;
        }

        paramValue = this.getPathParamValue(pathParams[pathParamIndex]);
        params[i] = ClassUtil.getParamVal(paramClass, paramValue[0]);
        pathParamIndex++;
        continue;
      }
    }

    return params;
  }