title: Column name 'column' was not found in this ResultSet when doing persist
body: <p>I'm using JPA with Hibernate to connect to a Postgres database, and I'm unable to persist an Entity into the database. </p>
  
  <p>I have the following in the database: </p>
  
  <pre><code>CREATE SEQUENCE "MODEL_C_MODEL_seq"
    INCREMENT 1
    MINVALUE 1
    MAXVALUE 9223372036854775807
    START 93
    CACHE 1;
  ALTER TABLE "MODEL_C_MODEL_seq"
  
  CREATE TABLE "MODEL"
  (
    "C_USER" character varying(10) NOT NULL,
    "C_MODEL" serial NOT NULL,
    "TP_MODEL" character(5) NOT NULL,
    "NM_MODEL" character varying(20) NOT NULL,
    CONSTRAINT "MODEL_PK" PRIMARY KEY ("C_MODEL" ),
    CONSTRAINT "MODEL_CUSER_FK" FOREIGN KEY ("C_USER")
        REFERENCES "USER" ("C_USER") MATCH SIMPLE
        ON UPDATE NO ACTION ON DELETE NO ACTION,
    CONSTRAINT "MODEL_TPMODEL_FK" FOREIGN KEY ("TP_MODEL")
        REFERENCES "ADM_TYPES" ("C_TYPE") MATCH SIMPLE
        ON UPDATE NO ACTION ON DELETE NO ACTION,
    CONSTRAINT "MODEL_CUSER_NMNAME_UNIQUE" UNIQUE ("C_USER" , "NM_MODEL" )
  )
  WITH (
    OIDS=FALSE
  );
  </code></pre>
  
  <p>My Entity is:</p>
  
  <pre><code>public class Model implements Serializable {
      private static final long serialVersionUID = 1L;
  
      **@Id
      @SequenceGenerator(name="modelPKgen", sequenceName="MODEL_C_MODEL_seq")
      @GeneratedValue(generator="modelPKgen", strategy= GenerationType.IDENTITY)
      @Column(name = "\"C_MODEL\"", unique=true, insertable=false)    
      private int cModel;**
  
      @OneToMany(cascade = CascadeType.ALL,  fetch= FetchType.EAGER)//, mappedBy = "model", fetch= FetchType.EAGER)
      @JoinColumn(name= "`C_MODEL`")
      private Collection&lt;State&gt; stateCollection;
  
      @JoinColumn(name = "`C_USER`", referencedColumnName ="`C_USER`", updatable = false)
      @ManyToOne(optional = false)
      private User user;
  
      @Basic(optional = false)
      @NotNull
      @Size(min = 1, max = 20)
      @Column(name = "\"NM_MODEL\"")
      private String nmModel;     
  
      @JoinColumn(name = "\"TP_MODEL\"")
      @ManyToOne(optional = false)
      private AdmTypes admTypes;
  ...
  </code></pre>
  
  <p>Checking in many posts it seems that I have the correct annotations for the field <strong>cModel</strong>.</p>
  
  <p>I have a class that does the following:</p>
  
  <pre><code>Model dbModel = new Model(user.getCUser(), simModel.getName());
          AdmTypes dbAdm = new AdmTypes(simModel.getType());
          dbModel.setAdmTypes(dbAdm);
  
          **em.persist(dbModel);**
          em.flush();
  </code></pre>
  
  <p>When executing <strong><code>em.persist</code></strong> I get an exception with this error:</p>
  
  <pre><code>Caused by: org.hibernate.exception.SQLGrammarException: The column name "C_MODEL" was not found in this ResultSet.
  </code></pre>
  
  <p>When checking the insert statement done by Hibernate in em.persist I see:</p>
  
  <pre><code>insert 
      into
          "MODEL"
          ("TP_MODEL", "NM_MODEL", "C_USER") 
      values
          (?, ?, ?)
  </code></pre>
  
  <p>Which is perfect because that sentence runs in postgres (inserting a new record with a newly generated <code>C_MODEL</code> id).</p>
  
  <p>Does anyone knows what could it be?</p>
  
  <p><strong>Update (Complete stacktrace):</strong></p>
  
  <pre><code>javax.persistence.PersistenceException: org.hibernate.exception.SQLGrammarException: The column name "C_MODEL" was not found in this ResultSet.
      at org.hibernate.ejb.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1367)
      at org.hibernate.ejb.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1295)
      at org.hibernate.ejb.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1301)
      at org.hibernate.ejb.AbstractEntityManagerImpl.persist(AbstractEntityManagerImpl.java:866)
      at com.sun.enterprise.container.common.impl.EntityManagerWrapper.persist(EntityManagerWrapper.java:269)
      at com.librethinking.simmodsys.persistence.adapters.ModelConverter.SIMModelToModel(ModelConverter.java:65)
      at com.librethinking.simmodsys.ejb.ModelBean.saveSIMModel(ModelBean.java:72)
      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      at java.lang.reflect.Method.invoke(Method.java:601)
      at org.glassfish.ejb.security.application.EJBSecurityManager.runMethod(EJBSecurityManager.java:1052)
      at org.glassfish.ejb.security.application.EJBSecurityManager.invoke(EJBSecurityManager.java:1124)
      at com.sun.ejb.containers.BaseContainer.invokeBeanMethod(BaseContainer.java:5366)
      at com.sun.ejb.EjbInvocation.invokeBeanMethod(EjbInvocation.java:619)
      at com.sun.ejb.containers.interceptors.AroundInvokeChainImpl.invokeNext(InterceptorManager.java:800)
      at com.sun.ejb.EjbInvocation.proceed(EjbInvocation.java:571)
      at com.sun.ejb.containers.interceptors.SystemInterceptorProxy.doAround(SystemInterceptorProxy.java:162)
      at com.sun.ejb.containers.interceptors.SystemInterceptorProxy.aroundInvoke(SystemInterceptorProxy.java:144)
      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      at java.lang.reflect.Method.invoke(Method.java:601)
      at com.sun.ejb.containers.interceptors.AroundInvokeInterceptor.intercept(InterceptorManager.java:861)
      at com.sun.ejb.containers.interceptors.AroundInvokeChainImpl.invokeNext(InterceptorManager.java:800)
      at com.sun.ejb.containers.interceptors.InterceptorManager.intercept(InterceptorManager.java:370)
      at com.sun.ejb.containers.BaseContainer.__intercept(BaseContainer.java:5338)
      at com.sun.ejb.containers.BaseContainer.intercept(BaseContainer.java:5326)
      at com.sun.ejb.containers.EJBLocalObjectInvocationHandler.invoke(EJBLocalObjectInvocationHandler.java:214)
      at com.sun.ejb.containers.EJBLocalObjectInvocationHandlerDelegate.invoke(EJBLocalObjectInvocationHandlerDelegate.java:88)
      at $Proxy186.saveSIMModel(Unknown Source)
      at com.librethinking.simmodsys.ejb.__EJB31_Generated__ModelBean__Intf____Bean__.saveSIMModel(Unknown Source)
      at com.librethinking.simmodsys.web.ModelsController.saveModel(ModelsController.java:366)
      at com.librethinking.simmodsys.web.ModelsController.processRequest(ModelsController.java:104)
      at com.librethinking.simmodsys.web.ModelsController.doPost(ModelsController.java:181)
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:754)
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:847)
      at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1539)
      at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:281)
      at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
      at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:655)
      at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:595)
      at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:98)
      at com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:91)
      at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:162)
      at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:330)
      at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:231)
      at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:174)
      at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:828)
      at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:725)
      at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:1019)
      at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:225)
      at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137)
      at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104)
      at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90)
      at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79)
      at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54)
      at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59)
      at com.sun.grizzly.ContextTask.run(ContextTask.java:71)
      at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532)
      at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513)
      at java.lang.Thread.run(Thread.java:722)
  Caused by: org.hibernate.exception.SQLGrammarException: The column name "C_MODEL" was not found in this ResultSet.
      at org.hibernate.exception.internal.SQLStateConversionDelegate.convert(SQLStateConversionDelegate.java:122)
      at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:49)
      at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:125)
      at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:110)
      at org.hibernate.engine.jdbc.internal.proxy.AbstractResultSetProxyHandler.continueInvocation(AbstractResultSetProxyHandler.java:108)
      at org.hibernate.engine.jdbc.internal.proxy.AbstractProxyHandler.invoke(AbstractProxyHandler.java:81)
      at $Proxy189.getInt(Unknown Source)
      at org.hibernate.id.IdentifierGeneratorHelper.get(IdentifierGeneratorHelper.java:152)
      at org.hibernate.id.IdentifierGeneratorHelper.getGeneratedIdentity(IdentifierGeneratorHelper.java:92)
      at org.hibernate.id.IdentityGenerator$GetGeneratedKeysDelegate.executeAndExtract(IdentityGenerator.java:100)
      at org.hibernate.id.insert.AbstractReturningDelegate.performInsert(AbstractReturningDelegate.java:58)
      at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:2767)
      at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3278)
      at org.hibernate.action.internal.EntityIdentityInsertAction.execute(EntityIdentityInsertAction.java:81)
      at org.hibernate.engine.spi.ActionQueue.execute(ActionQueue.java:362)
      at org.hibernate.engine.spi.ActionQueue.addResolvedEntityInsertAction(ActionQueue.java:203)
      at org.hibernate.engine.spi.ActionQueue.addInsertAction(ActionQueue.java:183)
      at org.hibernate.engine.spi.ActionQueue.addAction(ActionQueue.java:167)
      at org.hibernate.event.internal.AbstractSaveEventListener.addInsertAction(AbstractSaveEventListener.java:320)
      at org.hibernate.event.internal.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:287)
      at org.hibernate.event.internal.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:193)
      at org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:126)
      at org.hibernate.ejb.event.EJB3PersistEventListener.saveWithGeneratedId(EJB3PersistEventListener.java:78)
      at org.hibernate.event.internal.DefaultPersistEventListener.entityIsTransient(DefaultPersistEventListener.java:208)
      at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:151)
      at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:78)
      at org.hibernate.internal.SessionImpl.firePersist(SessionImpl.java:844)
      at org.hibernate.internal.SessionImpl.persist(SessionImpl.java:819)
      at org.hibernate.internal.SessionImpl.persist(SessionImpl.java:823)
      at org.hibernate.ejb.AbstractEntityManagerImpl.persist(AbstractEntityManagerImpl.java:860)
      ... 58 more
  Caused by: org.postgresql.util.PSQLException: The column name "C_MODEL" was not found in this ResultSet.
      at org.postgresql.jdbc2.AbstractJdbc2ResultSet.findColumn(AbstractJdbc2ResultSet.java:2550)
      at org.postgresql.jdbc2.AbstractJdbc2ResultSet.getInt(AbstractJdbc2ResultSet.java:2414)
      at sun.reflect.GeneratedMethodAccessor93.invoke(Unknown Source)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      at java.lang.reflect.Method.invoke(Method.java:601)
      at org.hibernate.engine.jdbc.internal.proxy.AbstractResultSetProxyHandler.continueInvocation(AbstractResultSetProxyHandler.java:104)
      ... 83 more
  </code></pre>