Why doesn't Hibernate see the mapping?

Question

PostgreSQL

persistence.xml

<?xml version="1.0" encoding="UTF-8"?>
<persistence xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xmlns="http://java.sun.com/xml/ns/persistence"
             xsi:schemaLocation="http://java.sun.com/xml/ns/persistence
                                 http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd"
            version="1.0">
    <persistence-unit name="Protium" transaction-type="RESOURCE_LOCAL">
        <properties>
            <property name="hibernate.hbm2ddl.auto" value="update"/>
            <property name="hibernate.connection.provider_class" value="org.hibernate.c3p0.internal.C3P0ConnectionProvider" />
        </properties>
    </persistence-unit>
</persistence>

PAUser.java

package net.protium.modules.pauth.database.orm;

import net.protium.modules.pauth.oauth2.OAuthType;

import javax.persistence.*;


@SuppressWarnings("JpaDataSourceORMInspection")
@Entity
@Table(name = "pauth_users")
public class PAUser {

  //region DisplayType definition
  @Id
  @Column(name = "user_id", nullable = false, unique = true)
  @GeneratedValue(strategy = GenerationType.IDENTITY)
  private Integer id;

  @Column(name = "login", nullable = false, unique = true)
  private String login;

  @Column(name = "email", nullable = false, unique = true)
  private String email;

  @Column(name = "password")
  private String password;

  @Column(name = "first_name")
  private String firstName = "";

  @Column(name = "middle_name")
  private String middleName = "";

  @Column(name = "last_name")
  private String lastName = "";

  @Column(name = "oauth_bind")
  private String oauthBind;

  @Column(name = "oauth_type")
  private OAuthType oauthType;
  //endregion

  public PAUser(String login, String email, String password, String firstName, String middleName, String lastName, String googleBind) {
    this.login = login;
    this.email = email;
    this.password = password;
    this.firstName = firstName;
    this.middleName = middleName;
    this.lastName = lastName;
    this.oauthBind = googleBind;
  }

  public PAUser( ) {
  }

  //region Getters and Setters
  public Integer getId( ) {
    return id;
  }

  public void setId(Integer id) {
    this.id = id;
  }

  public String getLogin( ) {
    return login;
  }

  public void setLogin(String login) {
    this.login = login;
  }

  public String getEmail( ) {
    return email;
  }

  public void setEmail(String email) {
    this.email = email;
  }

  public String getPassword( ) {
    return password;
  }

  public void setPassword(String password) {
    this.password = password;
  }

  public String getFirstName( ) {
    return firstName;
  }

  public void setFirstName(String firstName) {
    this.firstName = firstName;
  }

  public String getMiddleName( ) {
    return middleName;
  }

  public void setMiddleName(String middleName) {
    this.middleName = middleName;
  }

  public String getLastName( ) {
    return lastName;
  }

  public void setLastName(String lastName) {
    this.lastName = lastName;
  }

  public String getOauthBind( ) {
    return oauthBind;
  }

  public void setOauthBind(String googleBind) {
    this.oauthBind = googleBind;
  }

  public OAuthType getOauthType( ) {
    return oauthType;
  }

  public void setOauthType(OAuthType oauthType) {
    this.oauthType = oauthType;
  }

  //endregion
}

When calling this code

TypedQuery < PAUser > query = entityManager
        .createQuery(
          "select user " +
            "from PAUser user " +
            "where user.login=:login",
          PAUser.class);

      System.out.println(query);

      user = query.setParameter("login", login)
        .getSingleResult();

I get this:

org.hibernate.hql.internal.ast.QuerySyntaxException: PAUser is not mapped [select user from PAUser user where user.login=:login]

How so?
UPD:
One detail: all these classes are in a separate JARe, which is dynamically loaded into the main one. And so in the core persistence.xml also lies.

Answer 1

One detail: all these classes are in a separate JARe

www.stackoverflow.com/a/7443665