[Hibernate-issues] [Hibernate-JIRA] Created: (HB-444) Session.load(Object, Serializable) does not load non-null collection properties

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  A new issue has been created in JIRA.

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View the issue:

  http://opensource.atlassian.com/projects/hibernate/secure/ViewIssue.jspa?key=HB-444


Here is an overview of the issue:
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        Key: HB-444
    Summary: Session.load(Object, Serializable) does not load non-null collection properties
       Type: Bug

     Status: Unassigned
   Priority: Major

    Project: Hibernate2
 Components: 
             core
   Versions:
             2.1 beta 5

   Assignee: 
   Reporter: Paul Ferraro

    Created: Fri, 31 Oct 2003 1:38 PM
    Updated: Fri, 31 Oct 2003 1:38 PM

Description:
Given the following persistent class:
public class MyObject
{
    private Integer id;
    private Set otherObjectSet = new HashSet();

    public Integer getId() { return id; }
    public void setId(Integer id) { this.id = id }
    public Set getOtherObjectSet() { return otherObjectSet; }
    public void setOtherObjectSet(Set set) { otherObjectSet = set }
}

with the following mapping:

<class name="MyObject" table="my_object" dynamic-update="true">
    <id name="id" column="my_object_id" type="int">
        <generator class="native"/>
    </id>
    <set name="otherObjectSet" table="my_object_mapping" cascade="none">
        <key column="my_object_id"/>
        <many-to-many class="OtherObject" column="other_object_id"/>
    </set>
</class>

The following code misbehaves:

Integer id = new Integer(1);
MyObject object = new MyObject(); // otherObjectSet is initialized to empty set
session.load(object, id);
object.getOtherObjectSet() // Will always be empty - collection was not loaded

however,

Integer id = new Integer(1);
MyObject object = (MyObject) session.load(MyObject.class, id);
object.getOtherObjectSet() // Will return properly associated OtherObjects

If I remove the " = new HashSet()" from the property declaration of set, then both methods return the proper values for getOtherObjectSet().


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