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i using asp.net 4.0 , mvc 2.0 web application. project requiremrnt have use server side control in application not possibl in noraml case. ideally want use adrotator control , datalist control. i saw few samples , references in codepleax mvc controllib howwver found less useful. can tell how utilize theese controls in asp.net application along mvc. note: please provide functionalities related adrotator , datalist controls not equivalent functionalities thanks in advace. mvc pages not use normal .net solution makes use of normal .net components impossible. a normal .net page use event driven solution call different methods service side mvc use actions , view completly different way handle things. also, mvc not use viewstate normal .net controlls require. found article discussing mixing of normal .net , mvc.
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jpa 2.0 - JPA 2 Criteria API - Exception converting JPQL to Criteria API query with Eclipselink -

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i'm having trouble converting jpa query use criteria api

i have following query attempts find serviceuser matching passed address parameter. serviceuser abstract entity concrete subclasses child , adult. i'm using joined inheritance strategy on serviceuser class.

everything works fine when call method.

public set<t> findbyaddress(address address) {      query query = manager.createquery("select distinct s serviceuser s join s.addresshistory h h = :address");     query.setparameter("address", address);      hashset<t> result = new hashset<t>();     (object s : query.getresultlist()) {         // tclass runtime type of generic session bean.         if (this.tclass.isinstance(s)) {             result.add((t) s);         }     }       return result; }

but, if try replace function following uses generated metamodel , typedquery getting exception

public set<t> findbyaddress(address address) {      criteriabuilder cb = manager.getcriteriabuilder();     criteriaquery<serviceuser> cq = cb.createquery(serviceuser.class);     root<serviceuser> su = cq.from(serviceuser.class);      join<serviceuser, address> addresshistory = su.join(serviceuser_.addresshistory);     cq.select(su).distinct(true).where(cb.equal(addresshistory, cb.parameter(address.class, "address")));     typedquery<serviceuser> q = manager.createquery(cq);     q.setparameter("address", address);      hashset<t> result = new hashset<t>();     (serviceuser s : q.getresultlist()) {         // tclass runtime type of generic session bean.         if (this.tclass.isinstance(s)) {             result.add((t) s);         }     }      return result; }

here stacktrace eclipslink logging. there seems nulpointerexception being thrown i'm not sure why?

 /** test : shouldbeabletofindchildbyaddress() uk.gov.sunderland.ccms.model.bean.childservice.findbyaddress(address[id=1,lineone=7,linetwo=camberwell way,linethree=moorside,linefour=sunderland,postcode=sr7 3xn]) [el finer]: 2010-12-20 12:39:42.89--serversession(7055953)--thread(thread[pool-52-thread-1,5,grizzly-kernel])--client acquired [el finer]: 2010-12-20 12:39:42.89--unitofwork(22763294)--thread(thread[pool-52-thread-1,5,grizzly-kernel])--tx binding tx mgr, status=status_active [el finest]: 2010-12-20 12:39:42.89--unitofwork(22763294)--thread(thread[pool-52-thread-1,5,grizzly-kernel])--execute query readobjectquery(referenceclass=address sql="select id, line_two, line_three, line_one, line_four, postcode address (id = ?)") [el finest]: 2010-12-20 12:39:42.906--unitofwork(22763294)--thread(thread[pool-52-thread-1,5,grizzly-kernel])--execute query readallquery(referenceclass=serviceuser ) [el finest]: 2010-12-20 12:39:42.906--serversession(7055953)--thread(thread[pool-52-thread-1,5,grizzly-kernel])--reconnecting external connection pool [el fine]: 2010-12-20 12:39:42.906--serversession(7055953)--connection(32184426)--thread(thread[pool-52-thread-1,5,grizzly-kernel])--select distinct t2.service_user_type address t0, service_user t2, service_user_address t1 ((? = t0.id) , ((t1.service_user_id = t2.id) , (t0.id = t1.address_id)))         bind => [1] [el finer]: 2010-12-20 12:39:42.906--unitofwork(22763294)--thread(thread[pool-52-thread-1,5,grizzly-kernel])--class uk.gov.sunderland.ccms.model.entity.adult [el finest]: 2010-12-20 12:39:42.906--serversession(7055953)--thread(thread[pool-52-thread-1,5,grizzly-kernel])--reconnecting external connection pool [el fine]: 2010-12-20 12:39:42.906--serversession(7055953)--connection(29495316)--thread(thread[pool-52-thread-1,5,grizzly-kernel])--select distinct t0.id, t0.service_user_type, t0.title, t0.dob, t0.gender, t0.disability, t0.ethnicity, t1.id, t1.employment, t1.info_pack_required, t1.home_phone, t1.other_language, t1.referrer, t1.mobile_phone, t1.lone_parent, t1.gp_practice, t1.contactable, t1.work_phone, t1.baby_due_date, t1.english_level service_user_address t3, address t2, adult t1, service_user t0 (((? = t2.id) , ((t1.id = t0.id) , (t0.service_user_type = ?))) , ((t3.service_user_id = t0.id) , (t2.id = t3.address_id)))         bind => [1, 1] [el warning]: 2010-12-20 12:39:42.906--unitofwork(22763294)--thread(thread[pool-52-thread-1,5,grizzly-kernel])--java.lang.nullpointerexception         @ org.eclipse.persistence.descriptors.inheritancepolicy.selectallrowusingdefaultmultipletablesubclassread(inheritancepolicy.java:1355)         @ org.eclipse.persistence.descriptors.inheritancepolicy.selectallrowusingmultipletablesubclassread(inheritancepolicy.java:1396)         @ org.eclipse.persistence.internal.queries.expressionquerymechanism.selectallrows(expressionquerymechanism.java:2493)         @ org.eclipse.persistence.queries.readallquery.executeobjectlevelreadquery(readallquery.java:407)         @ org.eclipse.persistence.queries.objectlevelreadquery.executedatabasequery(objectlevelreadquery.java:1074)         @ org.eclipse.persistence.queries.databasequery.execute(databasequery.java:736)         @ org.eclipse.persistence.queries.objectlevelreadquery.execute(objectlevelreadquery.java:1034)         @ org.eclipse.persistence.queries.readallquery.execute(readallquery.java:380)         @ org.eclipse.persistence.queries.objectlevelreadquery.executeinunitofwork(objectlevelreadquery.java:1112)         @ org.eclipse.persistence.internal.sessions.unitofworkimpl.internalexecutequery(unitofworkimpl.java:2909)         @ org.eclipse.persistence.internal.sessions.abstractsession.executequery(abstractsession.java:1291)         @ org.eclipse.persistence.internal.sessions.abstractsession.executequery(abstractsession.java:1273)         @ org.eclipse.persistence.internal.sessions.abstractsession.executequery(abstractsession.java:1247)         @ org.eclipse.persistence.internal.jpa.ejbqueryimpl.executereadquery(ejbqueryimpl.java:479)         @ org.eclipse.persistence.internal.jpa.ejbqueryimpl.getresultlist(ejbqueryimpl.java:714) */

looking @ sql gets issued failing criteria api query , comparing sql gets issued when perform query jpa string query.

criteria query

   select distinct t0.id, t0.service_user_type, t0.title, t0.dob, t0.gender, t0.disability, t0.ethnicity, t1.id, t1.employment, t1.info_pack_required, t1.home_phone, t1.other_language, t1.referrer, t1.mobile_phone, t1.lone_parent, t1.gp_practice, t1.contactable, t1.work_phone, t1.baby_due_date, t1.english_level  service_user_address t3, address t2, adult t1, service_user t0  (((? = t2.id) , ((t1.id = t0.id) , (t0.service_user_type = ?)))  , ((t3.service_user_id = t0.id) , (t2.id = t3.address_id)))

jpa string query

  select distinct t0.id, t0.service_user_type, t0.title, t0.dob, t0.gender, t0.disability, t0.ethnicity, t1.id, t1.employment, t1.info_pack_required, t1.home_phone, t1.other_language, t1.referrer, t1.mobile_phone, t1.lone_parent, t1.gp_practice, t1.contactable, t1.work_phone, t1.baby_due_date, t1.english_level service_user_address t3, address t2, adult t1, service_user t0  (((? = t2.id) , ((t1.id = t0.id) , (t0.service_user_type = ?)))  , ((t3.service_user_id = t0.id) , (t2.id = t3.address_id)))

and

select distinct t0.id, t0.service_user_type, t0.title, t0.dob, t0.gender, t0.disability, t0.ethnicity, t1.id  service_user_address t3, address t2, child t1, service_user t0 (((? = t2.id) , ((t1.id = t0.id) , (t0.service_user_type = ?))) , ((t3.service_user_id = t0.id) , (t2.id = t3.address_id)))

i can see first part deals adult subclass of serviceuser identical in both cases when comes child subclass criteria query throws 

 [el warning]: 2010-12-20 )--java.lang.nullpointerexception         @ org.eclipse.persistence.descriptors.inheritancepolicy.selectallrowusingdefaultmultipletablesubclassread(inheritancepolicy.java:1355)

could bug eclipselink?

yes indeed appears bug eclipselink

 <dependency>      <groupid>org.eclipse.persistence</groupid>      <artifactid>eclipselink</artifactid>      <version>2.1.1</version>      <scope>provided</scope>  </dependency>

changing inheritance strategy 

@inheritance(strategy = inheritancetype.joined)

to

@inheritance(strategy = inheritancetype.single_table)

on abstract base class service_user provides workaround in case ok.


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