[jira] [Created] (OPENJPA-2678) MultiValuedTrasveralAttempt not evaluated when there is another field with the same name in the path

[JIRA]

Gonzalo García Jaubert created OPENJPA-2678:
-----------------------------------------------

             Summary: MultiValuedTrasveralAttempt not evaluated when there is 
another field with the same name in the path
                 Key: OPENJPA-2678
                 URL: https://issues.apache.org/jira/browse/OPENJPA-2678
             Project: OpenJPA
          Issue Type: Bug
          Components: kernel
    Affects Versions: 2.4.1
            Reporter: Gonzalo García Jaubert
            Priority: Minor


h2. Problem

MultiValuedTrasveralAttempt  not evaluated when there is another field with the 
same name in the path.

h2. Steps:

1. Create a client entity as:

{code:java}
@Entity
public class Client {

    @Id
    @GeneratedValue
    private Integer id;

    @OneToMany
    private Collection<Product> products;

...
{code}

2. and a Product:

{code:java}
@Entity
public class Product {

    @Id
    @GeneratedValue
    private Integer id;

    @ManyToOne
    private Client client;

    private Boolean deleted = false;

...
{code}

3. Run this query:

SELECT DISTINCT c 
FROM Client c JOIN FETCH c.products 
WHERE c.products.deleted = false

Result is: "JPQL does not allow traversal through multi-valued relation path. 
Try join instead"

4. Add a deleted field to the *client*:

{code:java}

private Boolean deleted;

{code}

5. Run the query again

No errors!

h2. Expected result:

Same exception when client have a *deleted* field

*org.apache.openjpa.kernel.exps.AbstractExpressionBuilder.traversePath*  is 
finding the wrong *deleted* field in the *c.products* path (the client.delete) 
and isMultiValuedTraversalAttempt is never evaluated








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