playframework - 使用 IN 条件 Play Framework 查询

Question

如何在 Play 中执行查询!具有 IN 条件的框架？我已经按照此链接中的解决方案Play Framework - How to Query a Model using 'IN'? ，但我收到一个非法参数异常错误:

IllegalArgumentException occured : org.hibernate.hql.ast.QuerySyntaxException: cannot define positional parameter after any named parameters have been defined [from models.Post where (category_id in (:cat)) AND (gender like ?) AND (name like ? OR description like ?) AND isComplete is ? order by created_date desc]

这是我的代码..

        String arrString[] = category.split(",");
        List<String> listString = new ArrayList<String>();
        for(int i=0; i<arrString.length; i++) {
            listString.add(arrString[i]);
        }

        posts = Post.find(                  
            "(category_id in (: cat)) AND (gender like? ) AND (name like? OR description like? ) AND isComplete is? " +
            "order by created_date desc", gender, search, search, true
        ).bind("cat", listString).from(0).fetch(50);

我不能简单地为 IN 使用 (? ) 语法。所以它会是这样的:

        posts = Post.find(                  
            "(category_id in (? )) AND (gender like? ) AND (name like? OR description like? ) AND isComplete is? " +
            "order by created_date desc", category, gender, search, search, true
        ).from(0).fetch(50);

我哪里做错了？任何意见，将不胜感激。

Answer 1

像这样的东西

import play.db.helper.SqlQuery;
...
Set<String> categories = ...;
posts = Post.find("(category_id in "+SqlQuery.inlineParam(categories)+" AND ...")....fetch();