c# - NHibernate many-to-many, unable to delete a row -

-

i've got following entities: project, projectmapping , user, it's many manyhere mappings:

public projectmembershipmapping() {     property(pm => pm.isaccepted, prop => prop.notnullable(true));     property(pm => pm.permission, prop => prop.notnullable(true));     manytoone(pm => pm.member, mapping =>                                    {                                        mapping.lazy(lazyrelation.nolazy);                                        mapping.cascade(cascade.all);                                    });     manytoone(pm => pm.project, mapping =>                                     {                                         mapping.lazy(lazyrelation.nolazy);                                         mapping.cascade(cascade.all);                                     });       composedid(pm =>                                                              {                        pm.manytoone(prop => prop.member);                        pm.manytoone(prop => prop.project);                    }); }  public projectmapping() {        set(proj => proj.members,             mapping =>             {                 mapping.lazy(collectionlazy.nolazy);                 mapping.inverse(false);                 mapping.cascade(cascade.all);                 mapping.table("projectmembership");                 mapping.key(k => k.column("project"));             },             action => action.onetomany()         );       }  public class devcoopusermapping : classmapping<devcoopuser> {         bag(user => user.projectmemberships,              mapping =>                 {                     mapping.lazy(collectionlazy.nolazy);                     mapping.inverse(false);                     mapping.cascade(cascade.all);                     mapping.table("projectmembership");                     mapping.key(k => k.column("member"));                 },             action => action.onetomany()); }

user can member of many projects. let's i'm gonna unsubscribe him project. deleting projectmembership object isession object throws me:

deleted object re-saved cascade (remove deleted object associations)[devcoop.daos.projectmembership#devcoop.daos.projectmembership]

on other hand, when first try delete projectmembership instance project , user (i delete associations suggested me), exception:

could not delete collection: [devcoop.daos.project.members#1][sql: update projectmembership set project = null project = @p0]

can help? supposedly screwed around mappings, got no idea can be.

before delete projectmembership instance, remove both devcoopuser.projectmemberships- , project.members-collections.

i believe should work: 

  membership.member.projectmemberships.remove(membership);   membership.project.members.remove(membership);   session.delete(membership);

and think should remove cascadeall projectmembership mapping. i'm not entirely sure, think cascade delete members , projects in collections mapped cascadeall, don't want happen.


Comments

Post a Comment

Popular posts from this blog

django - How can I change user group without delete record -

-
on website user have 1 group. , user can change group. it's made user.groups.clear() and user.groups.add(new_group) but it's not efficient, because there 2 sql query: delete, insert. how can change group update query? user , group related each other using manytomanyfield . means intersection table exists relating both entities, , if don't specify model map (using through attribute) django creates 1 you. looking @ sources django.contrib.auth.models see that's case. fortunatly, can access intermediary model using through attribute of manager (in case, user.groups.through ). can use regular model. example: >>> alice = user.objects.create_user('alice', 'alice@example.com', 'alicepw') >>> employee = group.objects.create(name='employee') >>> manager = group.objects.create(name='manager') >>> alice.groups.add(employee) >>> alice.groups.all() [<group: employee...
Read more

java - Need to add SOAP security token -

-
i need set custom soap header attribute on jax-ws generated webservice client. case webservice calls must go through proxy server requiring specific token (recieved web request header) present in soap request header. e.g.: 1 carserviceservice service = null; 2 service = new carserviceservice(new url(url), new qname(qname); 3 carserviceendpoint port = service.getcarserviceport(); it seems in line 3 wsdl retrieved , call fails due missing security token. 1 point direction on how done? a detailed example has been mentioned here: creating , deploying jax-ws web service on tomcat 6 this article shows how create , use security token .
Read more

java - EclipseLink JPA Object is not a known entity type -

-
i have strange problem eclipselink , object want persist. have 1 object (keypointlistimpl) stores object keypointimpl in list. persisting keypointimpl objects works great if try persist keypointlistimpl object java.lang.illegalargumentexception says object keypointimpl isn't known entity type. here keypointimpl code: @entity @table(name="keypoints") public class keypointimpl implements keypoint { @id @generatedvalue(strategy = generationtype.identity) private int id; @enumerated(enumtype.string) private detectortype keypointtype; private float x; private float y; private float size; private float angle; private float response; private int octave; private int classid; ... } here keypointlistimpl code: @entity @table(name="keypointlists") public class keypointlistimpl implements keypointlist { @id @generatedvalue(strategy = generationtype.identity) private int id; @onetoone(cascade={ca...
Read more