java ee - org.hibernate.MappingException: Unknown entity: domain.ShoppingCart$Proxy$_$$_WeldClientProxy -

i'm getting weird error, i'm not able debug. i'll obliged if can go through details , suggest me friends.

i'm using jboss server 7.1.

web app working fine modules. when i'm done products in cart, , "checkout", cause exception.

i provided required information, please if need else let me know. i'd appreciate kind responses. lot viewing request.

libraries included in project ( except jboss own included libraries )

hibernateutil.java

public static sessionfactory getsessionfactory() {         try{             configuration conf=new configuration();             conf.configure("/com/webshop/hb/config/mycfg-mysql.xml");              sessionfactory =conf.buildsessionfactory();              }catch(exception e){                 e.printstacktrace();             }         return sessionfactory; } 

shoppingcart.java

package domain;  import java.text.dateformat; import java.text.simpledateformat; import java.util.calendar; import java.util.date; import java.util.hashmap; import java.util.map; import java.util.set;  import javax.enterprise.context.sessionscoped; import javax.inject.named; import javax.persistence.column; import javax.persistence.elementcollection; import javax.persistence.entity; import javax.persistence.generatedvalue; import javax.persistence.generationtype; import javax.persistence.id; import javax.persistence.joincolumn; import javax.persistence.manytoone; import java.io.serializable;  @named @sessionscoped @entity public class shoppingcart implements serializable { private static long currentid =1;      @id     @generatedvalue(strategy = generationtype.auto)     @column(name="id")     private long id;     @column(name="date")     private date date;     @manytoone     @joincolumn(name="user")     private user user;      @elementcollection     private map<product, integer> orders = new hashmap<product, integer>();      @column(name="status")     private orderstatus status; // string       public shoppingcart() {         this(new date());     }      public shoppingcart(date date) {         super();         this.id = currentid++; // simple way of getting unique id. deferred dbms later.         this.date = date;         this.status = orderstatus.empty;     }      public shoppingcart(date date, user user) {         this(date);         this.user = user;     }      public shoppingcart(date date, user user, orderstatus status) {         this(date, user);         if (((status == orderstatus.completed) || (status == orderstatus.paid)) && (this.getuser() == null)) {             throw new illegalstateexception("no user specified complete or paid orders");         }     }      public date getdate() {         return date;     }      public void setdate(date date) {         this.date = date;     }      public user getuser() {         return user;     }      public void setuser(user user) {         this.user = user;     }      public map<product, integer> getorders() {         return orders;     }      public void setorders(map<product, integer> orders) {         this.orders = orders;     }      public orderstatus getstatus() {         return status;     }      public void setcompleted(orderstatus status) throws illegalstatetransitionexception {         if ((status == orderstatus.completed) && (this.getuser() == null)) {             throw new illegalstatetransitionexception(this.getstatus().tostring(), orderstatus.completed.tostring(), "customer empty");         }         if ((status == orderstatus.paid) && (this.getuser() == null)) {             throw new illegalstatetransitionexception(this.getstatus().tostring(), orderstatus.paid.tostring(), "customer empty");         }         if ((status == orderstatus.paid) && (this.getstatus() != orderstatus.completed)) {             throw new illegalstatetransitionexception(this.getstatus().tostring(), orderstatus.paid.tostring(), "can go paid completed orders");         }         this.status = status;     }      public long getid() {         return id;     }      public void addtocart(product product, int amountselected) {         if (orders.containskey(product)) {             int amount = orders.get(product);             amount +=amountselected;             orders.put(product, amount);         }         else {             orders.put(product, amountselected);         }     }      public void removefromcart(product product) {         if (orders.containskey(product)) {             int amount = orders.get(product);             amount --;             if (amount <= 0) {                 orders.remove(product);             }             else {                 orders.put(product, amount);             }         }     }      public int getnumberofitems() {         set<product> uniqueproducts = orders.keyset();         int amount = 0;         (product aproduct: uniqueproducts) {             amount += orders.get(aproduct);         }         return amount;     }      @override     public string tostring() {         dateformat dateformat = new simpledateformat("dd-mm-yyyy hh:mm:ss");         calendar cal = calendar.getinstance();         return "order of " + this.user + ", date " + dateformat.format(cal.gettime());     } } 

mycfg-mysql.xml

<?xml version="1.0" encoding="utf-8"?> <!doctype hibernate-configuration public "-//hibernate/hibernate configuration dtd 3.0//en"                                          "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd"> <hibernate-configuration>   <session-factory>   <property name="hibernate.connection.driver_class">com.mysql.jdbc.driver</property>   <!-- <property name="hibernate.bytecode.use_reflection_optimizer">false</property> -->   <property name="hibernate.connection.username">root</property>   <property name="hibernate.connection.password">root</property>   <!-- <property name="hibernate.connection.url">jdbc:mysql://localhost:3306/test</property>  -->    <property name="connection.datasource">java:jboss/datasources/webshopstudent</property>    <property name="hibernate.connection.pool_size">100</property>   <property name="dialect">org.hibernate.dialect.mysqldialect</property>   <property name="show_sql">true</property>    <!-- automatic schema creation (begin) === -->   <property name="hibernate.hbm2ddl.auto">update</property>    <property name="hibernate.cache.provider_class">org.hibernate.cache.hashtablecacheprovider</property>   <property name="current_session_context_class">thread</property>    <mapping class="domain.user"/>   <mapping class="domain.product"/>    <mapping class="domain.wax"/>   <mapping class="domain.miscellaneous"/>   <mapping class="domain.honey"/>   <mapping class="domain.flower"/>   <mapping class="domain.shoppingcart"/>   </session-factory> </hibernate-configuration> 

exception i'm getting when checkout cart

function causing issue

public string confirmorder() throws illegalstatetransitionexception {          shoppingcart.setuser(userholder.getcurrentuser());         shoppingcart.setcompleted(orderstatus.completed);         shoppingcart.setdate(new date());          // setting sessions          session session = hibernateutil.getsessionfactory().opensession();         session.begintransaction();         session.save(shoppingcart); // line causing exception, checked debugging         session.close();          updatestocks();          facescontext fc = facescontext.getcurrentinstance();         fc.getelcontext().getelresolver().setvalue(fc.getelcontext(), null, "shoppingcart", null);          //printing invoice          //writing file         try {             string content = "customer name: " + shoppingcart.getuser().firstname + " " + shoppingcart.getuser().lastname +"\r\n" +                               "address : " + shippingaddress + "\r\n" +                              "date received: " + shoppingcart.getdate() + "\r\n" +                              "order items :" + shoppingcart.getorders() + "\r\n" +                              "money received :" + productholder.subtotal();  //          file file = new file("/users/vinod/documents/newfile.txt");             file file = new file("f:/" + shoppingcart.getid() + shoppingcart.getuser().firstname + "invoice.txt");              if (!file.exists()) {                 file.createnewfile();             }              filewriter fw = new filewriter(file.getabsolutefile());             bufferedwriter bw = new bufferedwriter(fw);             bw.write(content);             bw.close();              system.out.println("done");              }catch (ioexception e) {                 e.printstacktrace();             }           return "ordercomplete";      } 

for me reason pretty obvious: shoppingcart entity cdi managed bean.
i'm sure injecting shoppingcart somewhere above method confirmorder:

@inject shoppingcart shoppingcart; 

am right? if yes, cause.

generally jpa entities shouldn't managed cdi beans. reasoning behind prevent beanmanager perform operations may cause jpa provider break (as caused exception).

so please try this:

package domain;  @entity public class shoppingcart implements serializable {      // ... } 

then define class, holds above entity:

package com.some_package;  @named @sessionscoped public class shoppingcartwrapper {       shoppingcart store = new shoppingcart(); // entity } 

this class can injected wherever want. , saving like:

public string confirmorder() throws illegalstatetransitionexception {        // ...       session session = hibernateutil.getsessionfactory().opensession();       session.begintransaction();       session.save(shoppingcartwrapper.getstore());        session.close();       // ... } 

btw: personal tip: managing transactions - mean "by hand", without ineterceptors error-prone , doesn't make code clean.

regards