JPQL Like语句未返回结果

Question

I have a FILE table within my application (using postgreSQL) which stores off the full path of a file I have on my OS.

When I try and do a 'like' query, I keep getting zero results when I know there is data saved.

Here's the query in question:

public List<MyFile> getDirectoryFiles(Path path) {
        Query query = em.createQuery("from MyFile f WHERE f.path LIKE :path");
        query.setParameter("path", "////data////myData////.settings% ESCAPE '//'");  // hard coded the path for testing
        return query.getResultList();
}


@Override
public void deleteDirectoryFiles(Path path) {
    for(MyFile file : this.getDirectoryFiles(path)){
        this.delete(file);
    }
}


// in some other method I am deleting the files from a directory
Foo.deleteDirectoryFiles(this);  // points to '/data/myData/.settings'

Not sure why this is happening. When I take what hibernate is producing and plugin the absolute path, I do see the returned tuples within my database.

Has anyone ever dealt with this issue? If so, how did you solve the problem? I've tried hardcoding my ':path' variable to be "'/data/myData/.settings%'", "%/data/myData/.settings%", "//data//myData//.settings%" and still nothing is being returned. There are no errors, but I cannot figure out why there are no results.

Answer 1

You have wrong syntax in you query, it looks more like HQL query than JPQL. The correct query should be like this:

em.createQuery("SELECT f FROM MyFile f WHERE f.path LIKE :path");