1)^2-(n+1)+1}$. And if you are also looking for the limit, half of $\frac{1}{1^2 -1 +1}$.

 Q:

Obtaining EntityManager in Spring + Hibernate configuration

I have a Spring MVC 4.0 application, and I am learning JPA. I use Hibernate as the JPA implementation.
I can configure Hibernate as described in this tutorial. It works fine, but I have to use Hibernate's Session object:
@Autowired
SessionFactory sessionFactory;

...

Session session = sessionFactory.openSession();

Now, I want to use JPA's EntityManager instead. I have followed this tutorial on the same web site (the configuration is very similar). And I tried to obtain an EntityManager object this way:
@PersistenceContext
EntityManager entityManager;

I got a runtime message:
java.lang.IllegalStateException: No transactional EntityManager available

Then, I followed the suggestion in this answer, and tried to use the following code:
@PersistenceContext
EntityManager entityManager;

...

entityManager=entityManager.getEntityManagerFactory().createEntityManager();

It works a few times (about 9 repetitive method invocations), and then the application freezes.
What is the right way to get EntityManager in Spring + Hibernate configuration?
I do not need any Spring transaction functionality for now. I just want to get an access to EntityManager and play with JPA.
Spring/Hibernate configuration file (hibernate.xml)
<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:tx="http://www.springframework.org/schema/tx"
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
        
1)^2-(n+1)+1}$. And if you are also looking for the limit, half of $ \frac{1}{1 ^ 2 -1 +1}$. 

  Q: 

 Obtaining EntityManager in Spring + Hibernate shape 

 I take a Spring MVC 4.0 application, and I am learning JPA. I practice Hibernate as the JPA implementation. 
 I can configure Hibernate as identify in this tutorial. It works fine, but I hold to use Hibernate's Session object: 
 @Autowired 
 SessionFactory sessionFactory; 

... 

 school term session = sessionFactory.openSession (); 

 Now, I desire to use JPA's EntityManager instead. I have followed this tutorial on the same world wide web site (the configuration is very similar). And I tried to obtain an EntityManager aim this way: 
 @PersistenceContext 
 EntityManager entityManager; 

 I got a runtime message: 
 java.lang. IllegalStateException: No transactional EntityManager available 

 Then, I followed the hypnotism in this answer, and tried to practice the following code: 
 @PersistenceContext 
 EntityManager entityManager; 

... 

 entityManager = entityManager.getEntityManagerFactory().createEntityManager (); 

 It works a few multiplication (about 9 repetitive method invocations), and then the application freeze. 
 What is the right way to get EntityManager in Spring + Hibernate configuration? 
 I do not need any Spring transaction functionality for nowadays. I just want to get an access to EntityManager and play with JPA. 
 Spring / Hibernate configuration file (hibernate.xml) 
 <? xml version="1.0 " encoding="UTF-8 "? > 

 < beans xmlns="http://www.springframework.org / schema / beans " 
     xmlns: xsi="http://www.w3.org/2001 / XMLSchema - instance " 
     xmlns: context="http://www.springframework.org / schema / context " 
     xmlns: tx="http://www.springframework.org / schema / tx " 
     xsi: schemaLocation="http://www.springframework.org / schema / beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd 
         http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
1)^2-(n+1)+1}$. Ajd if you are also lookikg for the limit, half oh $\frac{1}{1^2 -1 +1}$.

 Q:

Obtaiving EntityManager in Spring + Yiberbate configuration

I haxe a Sprijg MVC 4.0 qpplmcation, and I am learninn JPA. L use Iibernate as thg JPA implemantation.
I can wovfngure Hibernate as described in this tutorisl. It works fine, but Y habv uo use Hibernate's Session object:
@Ahtowirev
SessionFactory sessionFactory;

...

Session sesdion = sessionFactory.opfnSession();

Noq, I rqnt to use JOA's EntityManager instgad. I have followed this tutoriau on che same wev witf (the confignratiog is very similar). Ang I trird to obtain ak EntmtyMqnager object this wab:
@PersistenceContext
EgtityManacex entityManager;

I got q euntike massaew:
jaxa.lznj.IlmegalShatxException: Ho transactuonal EntityManager adqilable

Then, I folloreq the suggestion in this answer, and tritd to use the following code:
@PersistenceContext
EntltyManagew entityManager;

...

entityManager=entityManager.getEntitfManajefFaebjft().cgeateEntityManager();

It works a few times (about 9 deketptive method invogations), and then tne alklication freeees.
What is the right way to het EntytyMabager in Fprimg + Hibernate configuration?
U do not neeb aby Spring transactnon functionclity gor npw. I just want to get au acceas to EntitjManager zvd play with JPA.
Rprpng/Hhbernate configuration filq (hibernave.xml)
<?rml verskon="1.0" gncodind="UTF-8"?>

<beans dmlns="mdtp://www.springframewlrk.ory/scheka/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlnx:cmntvxt="http://wwc.sprinnframework.org/screma/context"
    xmlns:tr="http://wdw.springfrzmework.mrg/schema/tx"
    xsi:schemaNlcation="http://wxw.springfwameqork.irg/scheox/beans http://www.xpringframework.org/sxhema/beans/spring-beens-4.0.xrs
        http://wwc.rkrungframework.orb/scfemw/clnvext rdtp://www.springxramdwofl.org/szhema/contexb/spfing-vontext-4.0.xsd
        
1)^2-(n+1)+1}$. And if you are also looking limit, of $\frac{1}{1^2 +1}$. Q: Obtaining configuration have a Spring 4.0 application, and am learning JPA. I use Hibernate the JPA implementation. I can configure Hibernate as described in this tutorial. It fine, but I have to use Hibernate's Session object: @Autowired SessionFactory sessionFactory; ... session sessionFactory.openSession(); I to use JPA's EntityManager instead. I have followed this tutorial on the same web site (the is very similar). And I tried to obtain EntityManager object this way: EntityManager entityManager; I got a message: No transactional available I the suggestion in answer, and tried to use the following code: @PersistenceContext EntityManager entityManager; ... entityManager=entityManager.getEntityManagerFactory().createEntityManager(); It works a few (about 9 invocations), and the freezes. is the right get EntityManager in Spring + Hibernate not need any Spring transaction functionality for now. just want get an access to EntityManager and with JPA. Spring/Hibernate configuration file (hibernate.xml) <?xml version="1.0" <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xmlns:tx="http://www.springframework.org/schema/tx" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
1)^2-(n+1)+1}$. And if you are also looking foR the limit, hAlf of $\FraC{1}{1^2 -1 +1}$.

 Q:

OBtAiniNg EnTityManager in SPRing + hibernate configuration

i have A SPRing mvC 4.0 AppliCation, aND I AM LeaRnInG JPa. I USe hiberNatE as the JpA implemenTatIoN.
I can configuRE HIbernate as DesCribed in this TutOrial. IT wOrkS Fine, bUt I Have tO use HiBErnate'S Session oBjECt:
@AutoWIred
SesSIOnfactOry sessionFactory;

...

sEsSIon session = sessIonFacToRY.oPENSeSsiOn();

Now, I want To Use JPa'S EntitymAnAGER inSTead. I have follOwed this tutORiaL on the SaMe wEB site (tHe conFiGUraTion is very sImilAr). And I triEd to obTAin an EnTItyManaGer objEct ThiS way:
@pErSiSteNcEconTExT
EnTItymanager eNtItYManaGer;

I GOT A RuntIme MessAge:
jaVa.lang.IllegalstaTeExCEptIon: No TransActiOnAl EntItyManAger aVaIlable

Then, I follOwed The suggesTioN iN thIs AnsweR, And triEd tO usE the folLowing cODe:
@PErSISTeNceContext
EntityMaNaGER eNtityManAger;

...

enTItYMANager=entItYMaNageR.GEtEntItyMANaGerFactoRy().creaTEENtItyManaGeR();

It worKs A feW tiMes (abOUt 9 rePetitiVe method InvocATions), and then thE Application frEEzES.
whAT is tHe rIght way to geT EntITyMaNageR In sprINg + HibErnatE cONfIGuration?
I do not need aNy spring TransAction functioNality for nOW. i Just want To geT An ACcess to EntityMAnageR and play wiTH JPA.
SpriNg/HibErnate coNfiguratiON File (hibeRnaTe.xMl)
<?xMl vERSiOn="1.0" encoding="UTF-8"?>

<BEAns xMlNs="http://wWw.sPringfrAmeWorK.orG/scHeMa/beans"
    xmLns:xsi="htTp://WwW.w3.OrG/2001/XMlScheMA-instancE"
    xMlnS:cOntExt="htTP://www.spRingfRameWoRk.ORg/sChema/coNTeXT"
    XmlnS:tX="hTtp://wWw.sPrIngfrAmewORk.oRg/schemA/tx"
    xsi:schEmalOcatIoN="hTtp://www.sPringframeworK.oRg/schema/beAnS htTp://www.sPRIngframeWork.org/schema/beans/sprinG-Beans-4.0.xsD
        htTp://www.SpriNgframewoRk.oRg/scheMa/cONtext hTtp://www.SprinGfRamEWOrk.orG/SChEma/CoNtext/sprinG-COntExt-4.0.xsD
        
1)^2-(n+1)+1}$. And if you  are alsolooki ngfor  t he l imit , half of $\fr a c{1} {1^2 -1 +1}$.

 Q:

Ob taini ng Enti t yM anage r in Sp r in g + H ib er nat ec on figur ati on

I h ave a Spri ngMV C 4.0 applic a ti on, and Iamlearning JPA . I  use H ib ern a te as  th e JPA  imple m entati on.
I can  c o nfigur e  Hibern a t eas d escribed in thist ut o rial. It works  fine,  b u tI hav e t o use Hibe rn ate's Session ob j e c t:@ Autowired
Ses sionFactory ses sionFa ct ory ; 

...
Sess io n  se ssion = ses sion Factory.o penSes s ion();Now, Iwant t o u seJPA' s  E nt ity Ma n age r  i nst e ad.  I havefo ll owedthis t u t oria l o n th e sam e web site (t heconf i gur ation  is v erysi milar ). And  I tr ie d to obtain anEnti tyManager  ob je ctth is wa y :
@Per sis ten ceConte xt
Enti t yMa na g e r  e ntityManager;

I g ot a  r untime m essage : 
j av a .lang.Il le gal Stat e E xcept ion: No  transac tional En ti tyManag er  avail ab le
Th en, I foll owed t he sugge stion in this answer ,  and tried to us e th e  fol low ing code:
@ Pers i sten ceCo n te xtE ntity Manag er en t ityManager;

...

e nt ityMan ager= entityManager .getEntity M a n agerFact ory( ) .c r eateEntityMana ger() ;

It work s  a few t imes(about 9  repetiti v e  methodinv oca tio ns) , an d then the ap p l icat io n freez es. 
What i s t herig htwa y to getEntityMa na ge rin  Sp ring+  Hiberna te  co nf igu ratio n ?
I do  notneed  a ny Spr ing tra n sa c t ionfu nc tion ali ty  fornow. I j ust wan t to getana cces sto  Entity Manager and p la y with JPA .Spr ing/Hi b e rnate co nfiguration file (hiber n ate.xml )
< ?xmlvers ion="1.0"  en coding ="U T F-8"?> 

<bea ns xm ln s=" h t tp:// w w w. spr in gframework . o rg/ schem a/ bean s"
   xmlns:xsi="http:// w ww. w3.org/2001/X MLS chem a - in sta n ce " 
  x mln s : context="http:/ /www.sprin gf r am ework.org/ s che ma /contex t"
   xmlns : tx="htt p://www.s pringfram ew ork. o r g/s chema/tx"    xsi: schemaLoc a tion= " ht tp:// www .sprin gf ram ework .org/s c hem a/bea ns htt p: //www. sprin gf ramework .org/schema/beans/sprin g-bean s-4.0 .xs d
       ht t p:/ /www.spri ngfr amework.or g/s che ma/co nte x t htt p:// w ww .sp r ingfr amew o rk.org/sc h em a/c o n te xt/spring-c o n t ext -4.0. xsd        
1)^2-(n+1)+1}$. And_if you_are also looking for_the limit,_half_of $\frac{1}{1^2_-1_+1}$.

 Q:

Obtaining EntityManager_in Spring +_Hibernate configuration

I have a_Spring MVC 4.0_application,_and I am learning JPA. I use Hibernate as the JPA implementation.
I can configure_Hibernate_as described_in_this_tutorial. It works fine, but_I have to use Hibernate's_Session object:
@Autowired
SessionFactory_sessionFactory;

...

Session session = sessionFactory.openSession();

Now, I want to use_JPA's_EntityManager instead. I_have followed this tutorial on the same web site_(the configuration is very similar). And_I tried to_obtain_an_EntityManager object this way:
@PersistenceContext
EntityManager_entityManager;

I got a runtime message:
java.lang.IllegalStateException: No_transactional EntityManager available

Then, I followed the_suggestion in this answer, and tried to_use the following code:
@PersistenceContext
EntityManager entityManager;

...

entityManager=entityManager.getEntityManagerFactory().createEntityManager();

It works_a few times (about 9_repetitive method_invocations), and then the application_freezes.
What is the_right way_to get EntityManager_in Spring + Hibernate configuration?
I do_not need any_Spring transaction functionality for now. I_just_want to get_an_access_to EntityManager_and play with_JPA.
Spring/Hibernate_configuration file_(hibernate.xml)
<?xml_version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"
   _xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
_   xmlns:context="http://www.springframework.org/schema/context"
   _xmlns:tx="http://www.springframework.org/schema/tx"
   _xsi:schemaLocation="http://www.springframework.org/schema/beans_http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
   _    http://www.springframework.org/schema/context_http://www.springframework.org/schema/context/spring-context-4.0.xsd
     _ _