@Reference(lazy = true) still loading all references

[seePatCode]

I have the following User class referenced members:

@Entity
public class User extends Model 
{
    @Indexed @Reference(lazy = true) public Organization organization;
    @Reference(lazy = true)  public List<Team> coachedTeams = new ArrayList<Team>();
    @Reference(lazy = true) @Lazy public List<Notification> userNotifications = new ArrayList<Notification>();

When I simply lookup the user by email it then queries for the organization and all of the organization's @references (which are lazy as well). Thank you in advance for any help and please let me know if there is any further code you will need.

[greenlaw110]

can you follow this thread to verify it?
https://groups.google.com/forum/?fromgroups#!topic/morphia/d_51noQiPoo

On Wed, Jul 4, 2012 at 7:09 AM, Patrick Cullen <
reply@reply.github.com

wrote:

I have the following User class referenced members:

@Entity
public class User extends Model
{
    @Indexed @Reference(lazy = true) public Organization organization;
    @Reference(lazy = true)  public List<Team> coachedTeams = new
ArrayList<Team>();
    @Reference(lazy = true) @Lazy public List<Notification>
userNotifications = new ArrayList<Notification>();

When I simply lookup the user by email it then queries for the
organization and all of the organization's @references (which are lazy as
well). Thank you in advance for any help and please let me know if there is
any further code you will need.

---

Reply to this email directly or view it on GitHub:
#91

[seePatCode]

Yes, I already did. I set breakpoints around the following line:

user = User.find("byEmail", Security.connected()).first();

The result was that all references were run.

[seePatCode]

Pardon my ignorance but there isn't a full source I could step through to help investigate, is there? I'm not sure of the contents of play-morphia.jar.

[greenlaw110]

the source you want to refer is morphia, not play-morphia. go
http://code.google.com/p/morphia/ for the source

On Wed, Jul 4, 2012 at 7:53 AM, Patrick Cullen <
reply@reply.github.com

wrote:

Pardon my ignorance but there isn't a full source I could step through to
help investigate, is there? I'm not sure of the contents of
play-morphia.jar.

---

Reply to this email directly or view it on GitHub:
#91 (comment)

[seePatCode]

I found that LazyFeatureDependencies is not being fulfilled once I traced the code which is causing it to ignore all lazy requests. I hope this helps.

[seePatCode]

Also, just to elaborate on that above post, it looks as though the version of morphia that play-morphia is using is from April, 2011. From what I can gather this version of morphia has the hooks for lazy references but not the required dependencies. Here is the actual dependency check method:

public static boolean testDependencyFullFilled() {
        if (fullFilled != null)
            return fullFilled;
        try {
            fullFilled = Class.forName("net.sf.cglib.proxy.Enhancer") != null
                    && Class.forName("com.thoughtworks.proxy.toys.hotswap.HotSwapping") != null;
        } catch (ClassNotFoundException e) {
            fullFilled = false;
        }
        return fullFilled;
    }

[seePatCode]

One last note, I decided to see what would happen if I just added the missing proxytoys,jar and the whole thing blows up with :
*** java.lang.instrument ASSERTION FAILED ***: "!errorOutstanding" with message t
ransform method call failed at ../../../src/share/instrument/JPLISAgent.c line: 8
06
~ ...

-Newer versions of morphia have lazy references working, would it be possible to update the version of morphia in the module?

[seePatCode]

I took a quick swing at this today and tried adding the latest from morphia but that didn't seem to help (snapshot 99.1). I think it may be a conflict issue since play also uses CGLIB (but without the dependencies). I tried adding the dependencies found from this list: http://cglib.sourceforge.net/dependencies.html. I won't be able to commit any more time to this in the near future so I am reworking a bunch of code to use ObjectIds instead of @reference. You may want to warn that (lazy=true) does not work since play-morphia's documentation alludes to the option of using it. I wouldn't want anyone to get as far down the rabbit hole as I did...

[anandbn]

Adding the below to pom.xml seems to do the trick for me:

        <dependency>
            <groupId>cglib</groupId>
            <artifactId>cglib-nodep</artifactId>
            <version>[2.1_3,3.0)</version>
            <type>jar</type>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>com.thoughtworks.proxytoys</groupId>
            <artifactId>proxytoys</artifactId>
            <version>1.0</version>
            <type>jar</type>
            <optional>true</optional>
        </dependency>

which is slightly different from the project page's dependencies. Might we worth updating the dependencies.html to reflect it correctly.

[yepelinux]

anandbn, it didnt work to me.
Even though i used your library versions, all references are fetched (yes, not anymore system message like no dependecy found)

This is my java method:

public static void companies(String id) {

    System.out.println("Method start:");

    Company comp = Company.findById(id);
    if(comp !=null){
        System.out.println("rendering!");
        renderJSON(comp.name);
    }

}

Method start:
16:56:50,130 TRACE ~ MorphiaPlugin-1.4.0> Running query(Company) : { "_id" : { "$oid" : "50b2b94efff7782873fd0306"}}, fields:null,off:0,limit:1
16:56:50,130 TRACE ~ MorphiaPlugin-1.4.0> Getting cursor(Company) for query:{ "_id" : { "$oid" : "50b2b94efff7782873fd0306"}}
16:56:50,315 DEBUG ~ MorphiaPlugin-1.4.0> Calling interceptor method PreLoad on play.modules.morphia.MorphiaPlugin$1@5d8e95d9
16:56:50,316 TRACE ~ MorphiaPlugin-1.4.0> Running query(Account) : { "_id" : { "$oid" : "50b2b94efff7782873fd0307"}}, fields:{ "_id" : true},off:0,limit:-1
16:56:50,316 TRACE ~ MorphiaPlugin-1.4.0> Getting cursor(Account) for query:{ "_id" : { "$oid" : "50b2b94efff7782873fd0307"}}
16:56:50,546 TRACE ~ MorphiaPlugin-1.4.0> Running query(Campaign) : { "_id" : { "$in" : [ { "$oid" : "50b2b94ffff7782873fd0308"}]}}, fields:{ "_id" : true},off:0,limit:-1
16:56:50,546 TRACE ~ MorphiaPlugin-1.4.0> Getting cursor(Campaign) for query:{ "_id" : { "$in" : [ { "$oid" : "50b2b94ffff7782873fd0308"}]}}
16:56:50,730 DEBUG ~ MorphiaPlugin-1.4.0> Calling interceptor method PostLoad on play.modules.morphia.MorphiaPlugin$1@5d8e95d9
rendering!

So, even i only render comp.name both Company references (Account and Campaign) are fetched.

Any ideas?

[AddoSolutions]

Looks like this is an issue with Morphia itself:

https://groups.google.com/forum/#!topic/morphia/OEQtZLII8tI