我写这些法典
Query q = pm.newQuery(User.class);
q.setFilter("textPosts != null"); // textPosts is a Text
List<User> users = (List<User>) q.execute();
resp.getWriter().println("user num: " + users.size());
而且,我已经来到这里。
user num: 0
I m sure that the number should greater than 0.
I probably miss something important.
Thanks in advance!
<编码> 关于财产问题的过滤令或分类令从来不会使实体与无索引的财产相匹配。
因此,找不到贵实体是因为案文性质从未指数化。
这一点也具有相关性(但就你的情况而言,案文是没有索引的优胜数),。
<编码> 搜索引擎数据库对没有特定财产的实体与对财产的无价实体加以区分。 JDO不支持这一区别:物体的每一领域都有价值,可能无效。
So if you have an Entity without a property, then it will not be found with a query, since a query requires that the property exists.
Maybe, Btw, i 确信它必须对本案作出例外规定。Text
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