[eclipselink-users] Problem Persisting a Map

[phil rod <philrod.phil@xxxxxxxxx>]

Any suggestions and ideas how to solve this ?

 

 

While posting I missed one the fields for this class:

class PD {

 

long id;

 

String name;

@ManyToOne

private PDMap dMap;

@Converter

(name="mapConverter", converterClass=StringMapJsonSerializedObjectConverter.class)

@Convert("mapConverter")

Map<String, Object> map = new HashMap<String, Object>();

 

}

On Wed, May 18, 2011 at 8:45 AM, phil rod <philrod.phil@xxxxxxxxx> wrote:

Hi All,

 

I have the following Mappings:

 

class MyPref {

 

long id;

@OneToOne

(cascade=CascadeType.ALL, fetch=FetchType.EAGER)

PDMap attributes = new PDMap();

}

 

class PDMap {

 

long id;

@OneToMany

(mappedBy="dMap", cascade=CascadeType.ALL, fetch=FetchType.EAGER)

@MapKey(name="name")

Map<String, PD>

mapOfMaps = new HashMap<String, PD>();

}

 

table PD

class PD {

 

long id;

@ManyToOne

private PDMap dMap;

@Converter

(name="mapConverter", converterClass=StringMapJsonSerializedObjectConverter.class)

@Convert("mapConverter")

Map<String, Object> map = new HashMap<String, Object>();

 

}

 

I am trying to do the following .

 

first time I insert into the entities using the key "ui" for PDMap and the key "recentprojs" for the PD's map.

 

PDMap looks like this

id , creationdate, lastupdatedate

1 , date, date

 

table PD looks like this:

id, name, map dmap_id

1, "ui", {"recentprojs":"11"}, 1

 

next time when I retreive the same row using

 

myPref.getAttribute("ui","recentprojs"); i get the right row.

 

now I am trying to update that entry to something like this:

 

myPref.setAttribute("ui","recentprojs", "11,9");

em.merge(myPref)

 

so that PD table look like this:

id, name, map dmap_id

1, "ui", {"recentprojs":"11,9"}, 1

 

and PDMap updates the respective dates,

 

 

but since I am updating the value for the same key its not detecting any changes and no updates happen to the tables... why is this ?

 

but when I change the it to something like this :

userPref.setAttribute("ui_1","recentproj", "11,9"); a new record gets inserted in PD table but no update to the dates in PDMap table. 

 

but What I want to achieve is update the same row with the new/updated values, how can I do this , and what is happening here.. Appreciate Any suggestiongs and ideas ?

 

Thank you!

 

Phil