频繁更改查询的Jdbc模板和MySql交互

Question

There are some queries used by a DAO layer that is implemented in JDBC Template

String longQuery = ".....";
public List<AnObject> findObjectsBySomething(Something s) {
    return getJdbcTemplate().queryForObjects(longQuery, myRowMapper, s);
}

longQuery is going to frequently change, but I don't want to have to manage it right in the source code. How do you go about handling this? I need jdbc template source code, and at least the basics of setting it up in mysql.

Other requirements:

• Cannot be a View, I already tried this and my query is too complicated (derived tables)
• Needs to query across other mysql databases on the same server
• Needs to return a list of Ids, which could many, several thousand possibly

Answer 1

How different is this query? You can store them as files(DAO_NNN.sql where NNN is an id to a specific SQL statement) or store them in an XML file.