playframework « Field « JPA Q&A

1. JPA: Indexing by another field of a table referenced by a foreign key    stackoverflow.com

I'm using JPA through the Play Framework, with Mysql. Let's say I have a JQL query as follows:

SELECT p FROM Person p WHERE p.address.city = 'New York'

2. How do I access multiple fields in a JPA query?    stackoverflow.com

I have a JPA query of the form:

SELECT category, count(*) AS c FROM ...

List<Article> articles = ...

3. play creates tables with the fields sorted alphabetically    stackoverflow.com

I am using a model in Play like this:

package models;

import java.util.*;
import javax.persistence.*;

import play.db.jpa.*;

@Entity
public class User extends Model {

    public String email;
    public String password;
  ...

4. Injecting fields into Java JPA fields    stackoverflow.com

I'm no pro with Java, so I need a little help. I'm using the Play Framework. I have an Entity class which extends GenericModel with fields like the following:

@Column(name = "description")
private String ...

5. How to select only necessary fields in Playframework using JPA    stackoverflow.com

I have played with Play!framework recently and found it’s great, especially model using JPA. It helps to speed up the development process. However, as advised, we should only select necessary fields in ...

6. PlayFramework get field from model select    stackoverflow.com

Since the play documentation on models is terrible I'll ask here. I have the basic code;

public static void Controller() {
        List<Item> item = Item.find("SELECT ...