<?xml version="1.0" encoding="UTF-8" standalone="no"?>
   <beans xmlns="http://www.springframework.org/schema/beans"
   xmlns:p="http://www.springframework.org/schema/p"             xmlns:tx="http://www.springframework.org/schema/tx"
   xmlns:context="http://www.springframework.org/schema/context"
   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xsi:schemaLocation="http://www.springframework.org/schema/beans
   http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
   http://www.springframework.org/schema/tx
   http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
   http://www.springframework.org/schema/context
   http://www.springframework.org/schema/context/spring-context-3.0.xsd">

<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
      p:driverClassName="com.mysql.jdbc.Driver" p:url="jdbc:mysql://localhost:3306/testSchema"
      p:username="train_together" p:password="..." p:initialSize="5" p:maxActive="10">
</bean>

<bean class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean"
        id="entityManagerFactory">
    <property name="dataSource" ref="dataSource" />
    <property name="jpaVendorAdapter">
        <bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
            <property name="showSql" value="true"/>
            <property name="generateDdl" value="true"/>
            <property name="databasePlatform" value="org.hibernate.dialect.MySQL5Dialect"/>
        </bean>
    </property>
    <property name="jpaProperties">
        <map>
            <entry key="hibernate.hbm2ddl.auto" value="validate" />
            <entry key="hibernate.enable_lazy_load_no_trans" value="true" />
            <entry key="hibernate.connection.release_mode" value="after_transaction" />
        </map>
    </property>
</bean>

<bean class="org.springframework.orm.jpa.JpaTransactionManager"
      id="transactionManager">
    <property name="entityManagerFactory" ref="entityManagerFactory" />
</bean>

<context:component-scan base-package="com.train"/>
<context:spring-configured />
<context:annotation-config />
<tx:annotation-driven />

<persistence xmlns="http://java.sun.com/xml/ns/persistence"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         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="JpaPersistenceUnit"
                  transaction-type="RESOURCE_LOCAL">
    <provider>org.hibernate.ejb.HibernatePersistence</provider>
    <properties>
        <property name="hibernate" value="thread" />
    </properties>
</persistence-unit>
</persistence>

@GET
@Path("1")
public Response test1(@QueryParam("i") @DefaultValue("10") int iterations) {
    String key = UUID.randomUUID().toString().substring(0, 4);
    System.out.println("*************************");
    System.out.println("    request consumed: " + key);
    System.out.println("*************************");
    Thread t1 = new Thread(new Runnable() {
        @Override public void run() {
            try {
                for (int i = 0; i < iterations; i++) {
                    System.out.println("*************************");
                    System.out.println("tThread: 1 " + key + " iteration:  " + (i+1));
                    userDao.getUsersOfTypeFromSportClub(UserType.CONTENDER, 1L);
                }
            } catch (Throwable e) {
                System.out.println(Throwables.getStackTraceAsString(e));
            }
        }
    });
    Thread t2 = new Thread(new Runnable() {
        @Override public void run() {
            try {
                for (int i=0; i< iterations; i++) {
                    System.out.println("*************************");
                    System.out.println("tThread: 2 " + key + " iteration:  " + (i+1));
                    userDao.getUsersOfTypeFromSportClub(UserType.CONTENDER, 1L);
                }
            } catch (Throwable e) {
                System.out.println(Throwables.getStackTraceAsString(e));
            }
        }
    });
    t1.start();
    t2.start();

    return Response.ok().build();
}

public abstract class BaseDao<T> {

    protected EntityManager em;
    protected EntityManagerFactory emf;

    @PersistenceUnit
    public void setEmf(EntityManagerFactory emf) {
        this.emf = emf;
        this.em = emf.createEntityManager();
    }
}