Thanks for the pointers!
I have a Map of Map and I am trying to update the value of the same key ,
like if I have <ui 8,9> next time I want to have <ui, 8,9,10>
I have specified the Cascade type in MyPref class for PDMap attributes,
and for the
Map<String, PD> mapOfMaps = *new* HashMap<String, PD>(); in PDMap class
however I am not sure how I can specify the cascade Type for the value
type <PD> in the mapOfMaps ?
And also I am actually doing this in a transaction and is managed and
the steps are :
em.find(myPref) //myPref is the base object holding the associations
myPref.setAttribute("ui", "recentProjs","8,9"); //basically here I am
trying to update the vlaue of the Map for the same key
em.merge(myPref)
On Fri, May 20, 2011 at 11:30 AM, Tom Ware <tom.ware@xxxxxxxxxx
<mailto:tom.ware@xxxxxxxxxx>> wrote:
It's not completely clear to me what you are trying to do but...
For changes to be detected in an object, it must be managed. I
don't see an settings that would cause your merge to be cascaded.
Try either explicitly merging the objects you want to see changes
for, or setting the mappings on your graph to cascade their merge.
-Tom
phil rod wrote:
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 <mailto:philrod.phil@xxxxxxxxx>
<mailto:philrod.phil@xxxxxxxxx <mailto: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
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