import org.springframework.orm.jpa.EntityManagerFactoryInfo; //导入依赖的package包/类
@Override
public final void afterPropertiesSet() {
	EntityManagerFactory emf = getEntityManagerFactory();
	if (emf == null) {
		throw new IllegalArgumentException("'entityManagerFactory' or 'persistenceUnitName' is required");
	}
	if (emf instanceof EntityManagerFactoryInfo) {
		EntityManagerFactoryInfo emfInfo = (EntityManagerFactoryInfo) emf;
		if (this.entityManagerInterface == null) {
			this.entityManagerInterface = emfInfo.getEntityManagerInterface();
			if (this.entityManagerInterface == null) {
				this.entityManagerInterface = EntityManager.class;
			}
		}
	}
	else {
		if (this.entityManagerInterface == null) {
			this.entityManagerInterface = EntityManager.class;
		}
	}
	this.shared = SharedEntityManagerCreator.createSharedEntityManager(
			emf, getJpaPropertyMap(), this.synchronizedWithTransaction, this.entityManagerInterface);
}
 

import org.springframework.orm.jpa.EntityManagerFactoryInfo; //导入依赖的package包/类
private EntityManager resolveEntityManager(String requestingBeanName) {
	// Obtain EntityManager reference from JNDI?
	EntityManager em = getPersistenceContext(this.unitName, false);
	if (em == null) {
		// No pre-built EntityManager found -> build one based on factory.
		// Obtain EntityManagerFactory from JNDI?
		EntityManagerFactory emf = getPersistenceUnit(this.unitName);
		if (emf == null) {
			// Need to search for EntityManagerFactory beans.
			emf = findEntityManagerFactory(this.unitName, requestingBeanName);
		}
		// Inject a shared transactional EntityManager proxy.
		if (emf instanceof EntityManagerFactoryInfo &&
				((EntityManagerFactoryInfo) emf).getEntityManagerInterface() != null) {
			// Create EntityManager based on the info's vendor-specific type
			// (which might be more specific than the field's type).
			em = SharedEntityManagerCreator.createSharedEntityManager(emf, this.properties);
		}
		else {
			// Create EntityManager based on the field's type.
			em = SharedEntityManagerCreator.createSharedEntityManager(emf, this.properties, getResourceType());
		}
	}
	return em;
}
 

import org.springframework.orm.jpa.EntityManagerFactoryInfo; //导入依赖的package包/类
private EntityManager resolveEntityManager(String requestingBeanName) {
	// Obtain EntityManager reference from JNDI?
	EntityManager em = getPersistenceContext(this.unitName, false);
	if (em == null) {
		// No pre-built EntityManager found -> build one based on factory.
		// Obtain EntityManagerFactory from JNDI?
		EntityManagerFactory emf = getPersistenceUnit(this.unitName);
		if (emf == null) {
			// Need to search for EntityManagerFactory beans.
			emf = findEntityManagerFactory(this.unitName, requestingBeanName);
		}
		// Inject a shared transactional EntityManager proxy.
		if (emf instanceof EntityManagerFactoryInfo &&
				((EntityManagerFactoryInfo) emf).getEntityManagerInterface() != null) {
			// Create EntityManager based on the info's vendor-specific type
			// (which might be more specific than the field's type).
			em = SharedEntityManagerCreator.createSharedEntityManager(
					emf, this.properties, this.synchronizedWithTransaction);
		}
		else {
			// Create EntityManager based on the field's type.
			em = SharedEntityManagerCreator.createSharedEntityManager(
					emf, this.properties, this.synchronizedWithTransaction, getResourceType());
		}
	}
	return em;
}
 

import org.springframework.orm.jpa.EntityManagerFactoryInfo; //导入依赖的package包/类
public final void afterPropertiesSet() {
	EntityManagerFactory emf = getEntityManagerFactory();
	if (emf == null) {
		throw new IllegalArgumentException("'entityManagerFactory' or 'persistenceUnitName' is required");
	}
	Class[] ifcs = null;
	if (emf instanceof EntityManagerFactoryInfo) {
		EntityManagerFactoryInfo emfInfo = (EntityManagerFactoryInfo) emf;
		if (this.entityManagerInterface == null) {
			this.entityManagerInterface = emfInfo.getEntityManagerInterface();
			if (this.entityManagerInterface == null) {
				this.entityManagerInterface = EntityManager.class;
			}
		}
		JpaDialect jpaDialect = emfInfo.getJpaDialect();
		if (jpaDialect != null && jpaDialect.supportsEntityManagerPlusOperations()) {
			ifcs = new Class[] {this.entityManagerInterface, EntityManagerPlus.class};
		}
		else {
			ifcs = new Class[] {this.entityManagerInterface};
		}
	}
	else {
		if (this.entityManagerInterface == null) {
			this.entityManagerInterface = EntityManager.class;
		}
		ifcs = new Class[] {this.entityManagerInterface};
	}
	this.shared = SharedEntityManagerCreator.createSharedEntityManager(emf, getJpaPropertyMap(), ifcs);
}
 

import org.springframework.orm.jpa.EntityManagerFactoryInfo; //导入依赖的package包/类
public void testCanCastNativeEntityManagerFactoryToEclipseLinkEntityManagerFactoryImpl() {
	EntityManagerFactoryInfo emfi = (EntityManagerFactoryInfo) entityManagerFactory;
	assertTrue(emfi.getNativeEntityManagerFactory().getClass().getName().endsWith("EntityManagerFactoryImpl"));
}
 

import org.springframework.orm.jpa.EntityManagerFactoryInfo; //导入依赖的package包/类
public void testCanCastNativeEntityManagerFactoryToHibernateEntityManagerFactoryImpl() {
	EntityManagerFactoryInfo emfi = (EntityManagerFactoryInfo) entityManagerFactory;
	assertTrue(emfi.getNativeEntityManagerFactory() instanceof HibernateEntityManagerFactory);
}
 

import org.springframework.orm.jpa.EntityManagerFactoryInfo; //导入依赖的package包/类
public void testCanCastNativeEntityManagerFactoryToOpenJpaEntityManagerFactoryImpl() {
	EntityManagerFactoryInfo emfi = (EntityManagerFactoryInfo) entityManagerFactory;
	assertTrue("native EMF expected", emfi.getNativeEntityManagerFactory() instanceof OpenJPAEntityManagerFactory);
}
 

import org.springframework.orm.jpa.EntityManagerFactoryInfo; //导入依赖的package包/类
public void testCanCastNativeEntityManagerFactoryToTopLinkEntityManagerFactoryImpl() {
	EntityManagerFactoryInfo emfi = (EntityManagerFactoryInfo) entityManagerFactory;
	assertTrue(emfi.getNativeEntityManagerFactory().getClass().getName().endsWith("EntityManagerFactoryImpl"));
}
 

import org.springframework.orm.jpa.EntityManagerFactoryInfo; //导入依赖的package包/类
public JPAPerister(List<State<T>> states, State<T> startState, Class<T> clazz, EntityManagerFactoryInfo entityManagerFactory, PlatformTransactionManager transactionManager) {
	this(states, null, startState, clazz, entityManagerFactory.getNativeEntityManagerFactory().createEntityManager(), transactionManager);
}