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첫 번째 스프링 애플리케이션을 개발하여 tomcat 7에 배포하려고합니다. 프로젝트 구성을 만들었고 모든 것이 잘 작동했습니다. 나는 onetoone 필드 가져 오기 모드를 LAZY로 바꿨을 때 문제가 발생했습니다.tomcat 7 Spring 3.1 Eclipselink 2.3
나는 다음
구성되어 문제가로드 시간 직물으로 생각하십시오 META-INF/context.xml에에 다음
<bean id="scholarDataSource" class="org.apache.tomcat.jdbc.pool.DataSource" destroy-method="close">
...
</bean>
<bean id="scholarEmf" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="dataSource" ref="scholarDataSource" />
<property name="packagesToScan" value="edu.najah.scholar.spring.entities" />
<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.EclipseLinkJpaVendorAdapter">
<property name="showSql" value="true"/>
<property name="generateDdl" value="true"/>
<property name="databasePlatform" value="org.eclipse.persistence.platform.database.oracle.Oracle11Platform"/>
</bean>
</property>
<property name="jpaDialect">
<bean class="org.springframework.orm.jpa.vendor.EclipseLinkJpaDialect" />
</property>
<property name="loadTimeWeaver">
<bean class="org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver" />
</property>
</bean>
<bean id="txManager" class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="scholarEmf" />
</bean>
<tx:annotation-driven transaction-manager="txManager"/>
<context:component-scan base-package="edu.najah.scholar.spring" />
<context:load-time-weaver />
내가 추가
<Loader loaderClass="org.springframework.instrument.classloading.tomcat.TomcatInstrumentableClassLoader"/>
다음 오류는 첫 번째 요청에서 제기되었습니다.
org.springframework.web.util.NestedServletException: Request processing failed; nested exception is javax.persistence.PersistenceException: Exception [EclipseLink-0] (Eclipse Persistence Services - 2.3.0.v20110604-r9504): org.eclipse.persistence.exceptions.IntegrityException
Descriptor Exceptions:
---------------------------------------------------------
Exception [EclipseLink-60] (Eclipse Persistence Services - 2.3.0.v20110604-r9504): org.eclipse.persistence.exceptions.DescriptorException
Exception Description: The method [_persistence_set_translation_vh] or [_persistence_get_translation_vh] is not defined in the object [edu.najah.scholar.entities.Node].
Internal Exception: java.lang.NoSuchMethodException: edu.najah.scholar.entities.Node._persistence_get_translation_vh()
Mapping: org.eclipse.persistence.mappings.OneToOneMapping[translation]
Descriptor: RelationalDescriptor(edu.najah.scholar.entities.Node --> [DatabaseTable(SCHOLAR.NODE)])
Exception [EclipseLink-218] (Eclipse Persistence Services - 2.3.0.v20110604-r9504): org.eclipse.persistence.exceptions.DescriptorException
Exception Description: A NullPointerException would have occurred accessing a non-existent weaved _vh_ method [_persistence_get_translation_vh]. The class was not weaved properly - for EE deployments, check the module order in the application.xml deployment descriptor and verify that the module containing the persistence unit is ahead of any other module that uses it.
Exception [EclipseLink-93] (Eclipse Persistence Services - 2.3.0.v20110604-r9504): org.eclipse.persistence.exceptions.DescriptorException
Exception Description: The table [NODE] is not present in this descriptor.
Descriptor: RelationalDescriptor(edu.najah.scholar.entities.Journal --> [DatabaseTable(SCHOLAR.JOURANL)])
Exception [EclipseLink-93] (Eclipse Persistence Services - 2.3.0.v20110604-r9504): org.eclipse.persistence.exceptions.DescriptorException
Exception Description: The table [NODE] is not present in this descriptor.
Descriptor: RelationalDescriptor(edu.najah.scholar.entities.Journal --> [DatabaseTable(SCHOLAR.JOURANL)])
Exception [EclipseLink-41] (Eclipse Persistence Services - 2.3.0.v20110604-r9504): org.eclipse.persistence.exceptions.DescriptorException
Exception Description: A non-read-only mapping must be defined for the sequence number field.
Descriptor: RelationalDescriptor(edu.najah.scholar.entities.JournalIssue --> [DatabaseTable(SCHOLAR.NODE), DatabaseTable(SCHOLAR.JOURNAL_ISSUE)])
Runtime Exceptions:
---------------------------------------------------------
java.lang.NullPointerException
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:894)
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:778)
javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
root cause
javax.persistence.PersistenceException: Exception [EclipseLink-0] (Eclipse Persistence Services - 2.3.0.v20110604-r9504): org.eclipse.persistence.exceptions.IntegrityException
Descriptor Exceptions:
---------------------------------------------------------
Exception [EclipseLink-60] (Eclipse Persistence Services - 2.3.0.v20110604-r9504): org.eclipse.persistence.exceptions.DescriptorException
Exception Description: The method [_persistence_set_translation_vh] or [_persistence_get_translation_vh] is not defined in the object [edu.najah.scholar.entities.Node].
Internal Exception: java.lang.NoSuchMethodException: edu.najah.scholar.entities.Node._persistence_get_translation_vh()
Mapping: org.eclipse.persistence.mappings.OneToOneMapping[translation]
Descriptor: RelationalDescriptor(edu.najah.scholar.entities.Node --> [DatabaseTable(SCHOLAR.NODE)])
Exception [EclipseLink-218] (Eclipse Persistence Services - 2.3.0.v20110604-r9504): org.eclipse.persistence.exceptions.DescriptorException
Exception Description: A NullPointerException would have occurred accessing a non-existent weaved _vh_ method [_persistence_get_translation_vh]. The class was not weaved properly - for EE deployments, check the module order in the application.xml deployment descriptor and verify that the module containing the persistence unit is ahead of any other module that uses it.
Exception [EclipseLink-93] (Eclipse Persistence Services - 2.3.0.v20110604-r9504): org.eclipse.persistence.exceptions.DescriptorException
Exception Description: The table [NODE] is not present in this descriptor.
Descriptor: RelationalDescriptor(edu.najah.scholar.entities.Journal --> [DatabaseTable(SCHOLAR.JOURANL)])
Exception [EclipseLink-93] (Eclipse Persistence Services - 2.3.0.v20110604-r9504): org.eclipse.persistence.exceptions.DescriptorException
Exception Description: The table [NODE] is not present in this descriptor.
Descriptor: RelationalDescriptor(edu.najah.scholar.entities.Journal --> [DatabaseTable(SCHOLAR.JOURANL)])
Exception [EclipseLink-41] (Eclipse Persistence Services - 2.3.0.v20110604-r9504): org.eclipse.persistence.exceptions.DescriptorException
Exception Description: A non-read-only mapping must be defined for the sequence number field.
Descriptor: RelationalDescriptor(edu.najah.scholar.entities.JournalIssue --> [DatabaseTable(SCHOLAR.NODE), DatabaseTable(SCHOLAR.JOURNAL_ISSUE)])
Runtime Exceptions:
---------------------------------------------------------
java.lang.NullPointerException
org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.deploy(EntityManagerSetupImpl.java:501)
org.eclipse.persistence.internal.jpa.EntityManagerFactoryDelegate.getDatabaseSession(EntityManagerFactoryDelegate.java:188)
org.eclipse.persistence.internal.jpa.EntityManagerFactoryDelegate.createEntityManagerImpl(EntityManagerFactoryDelegate.java:277)
org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManagerImpl(EntityManagerFactoryImpl.java:290)
org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:268)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
java.lang.reflect.Method.invoke(Method.java:601)
org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.invokeProxyMethod(AbstractEntityManagerFactoryBean.java:376)
org.springframework.orm.jpa.AbstractEntityManagerFactoryBean$ManagedEntityManagerFactoryInvocationHandler.invoke(AbstractEntityManagerFactoryBean.java:517)
$Proxy33.createEntityManager(Unknown Source)
org.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:234)
$Proxy43.find(Unknown Source)
edu.najah.scholar.spring.dao.NodeDaoImpl.find(NodeDaoImpl.java:43)
edu.najah.scholar.spring.bo.NodeBoImpl.find(NodeBoImpl.java:38)
edu.najah.scholar.spring.controller.JounralController.test(JounralController.java:91)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
java.lang.reflect.Method.invoke(Method.java:601)
org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:176)
org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:436)
org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:424)
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:900)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:827)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882)
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:778)
javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
root cause
Exception [EclipseLink-0] (Eclipse Persistence Services - 2.3.0.v20110604-r9504): org.eclipse.persistence.exceptions.IntegrityException
Descriptor Exceptions:
---------------------------------------------------------
Exception [EclipseLink-60] (Eclipse Persistence Services - 2.3.0.v20110604-r9504): org.eclipse.persistence.exceptions.DescriptorException
Exception Description: The method [_persistence_set_translation_vh] or [_persistence_get_translation_vh] is not defined in the object [edu.najah.scholar.entities.Node].
Internal Exception: java.lang.NoSuchMethodException: edu.najah.scholar.entities.Node._persistence_get_translation_vh()
Mapping: org.eclipse.persistence.mappings.OneToOneMapping[translation]
Descriptor: RelationalDescriptor(edu.najah.scholar.entities.Node --> [DatabaseTable(SCHOLAR.NODE)])
Exception [EclipseLink-218] (Eclipse Persistence Services - 2.3.0.v20110604-r9504): org.eclipse.persistence.exceptions.DescriptorException
Exception Description: A NullPointerException would have occurred accessing a non-existent weaved _vh_ method [_persistence_get_translation_vh]. The class was not weaved properly - for EE deployments, check the module order in the application.xml deployment descriptor and verify that the module containing the persistence unit is ahead of any other module that uses it.
Exception [EclipseLink-93] (Eclipse Persistence Services - 2.3.0.v20110604-r9504): org.eclipse.persistence.exceptions.DescriptorException
Exception Description: The table [NODE] is not present in this descriptor.
Descriptor: RelationalDescriptor(edu.najah.scholar.entities.Journal --> [DatabaseTable(SCHOLAR.JOURANL)])
Exception [EclipseLink-93] (Eclipse Persistence Services - 2.3.0.v20110604-r9504): org.eclipse.persistence.exceptions.DescriptorException
Exception Description: The table [NODE] is not present in this descriptor.
Descriptor: RelationalDescriptor(edu.najah.scholar.entities.Journal --> [DatabaseTable(SCHOLAR.JOURANL)])
Exception [EclipseLink-41] (Eclipse Persistence Services - 2.3.0.v20110604-r9504): org.eclipse.persistence.exceptions.DescriptorException
Exception Description: A non-read-only mapping must be defined for the sequence number field.
Descriptor: RelationalDescriptor(edu.najah.scholar.entities.JournalIssue --> [DatabaseTable(SCHOLAR.NODE), DatabaseTable(SCHOLAR.JOURNAL_ISSUE)])
Runtime Exceptions:
---------------------------------------------------------
java.lang.NullPointerException
org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.initializeDescriptors(DatabaseSessionImpl.java:535)
org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.initializeDescriptors(DatabaseSessionImpl.java:476)
org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.initializeDescriptors(DatabaseSessionImpl.java:435)
org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.postConnectDatasource(DatabaseSessionImpl.java:673)
org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.login(DatabaseSessionImpl.java:631)
org.eclipse.persistence.internal.jpa.EntityManagerFactoryProvider.login(EntityManagerFactoryProvider.java:208)
org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.deploy(EntityManagerSetupImpl.java:472)
org.eclipse.persistence.internal.jpa.EntityManagerFactoryDelegate.getDatabaseSession(EntityManagerFactoryDelegate.java:188)
org.eclipse.persistence.internal.jpa.EntityManagerFactoryDelegate.createEntityManagerImpl(EntityManagerFactoryDelegate.java:277)
org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManagerImpl(EntityManagerFactoryImpl.java:290)
org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:268)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
java.lang.reflect.Method.invoke(Method.java:601)
org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.invokeProxyMethod(AbstractEntityManagerFactoryBean.java:376)
org.springframework.orm.jpa.AbstractEntityManagerFactoryBean$ManagedEntityManagerFactoryInvocationHandler.invoke(AbstractEntityManagerFactoryBean.java:517)
$Proxy33.createEntityManager(Unknown Source)
org.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:234)
$Proxy43.find(Unknown Source)
edu.najah.scholar.spring.dao.NodeDaoImpl.find(NodeDaoImpl.java:43)
edu.najah.scholar.spring.bo.NodeBoImpl.find(NodeBoImpl.java:38)
edu.najah.scholar.spring.controller.JounralController.test(JounralController.java:91)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
java.lang.reflect.Method.invoke(Method.java:601)
org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:176)
org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:436)
org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:424)
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:900)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:827)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882)
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:778)
javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
note The full stack trace of the root cause is available in the Apache Tomcat/7.0.22 logs.
:
org.springframework.web.util.NestedServletException: Request processing failed; nested exception is Exception [EclipseLink-44] (Eclipse Persistence Services - 2.3.0.v20110604-r9504): org.eclipse.persistence.exceptions.DescriptorException
Exception Description: Missing class indicator field from database row [ArrayRecord(
SCHOLAR.NODE.ID => 407
SCHOLAR.NODE.LANG => ar
SCHOLAR.NODE.OWNER => null
SCHOLAR.NODE.TRANSLATION_ID => 408)].
Descriptor: RelationalDescriptor(edu.najah.scholar.entities.Node --> [DatabaseTable(SCHOLAR.NODE)])
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:894)
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:778)
javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
root cause
Exception [EclipseLink-44] (Eclipse Persistence Services - 2.3.0.v20110604-r9504): org.eclipse.persistence.exceptions.DescriptorException
Exception Description: Missing class indicator field from database row [ArrayRecord(
SCHOLAR.NODE.ID => 407
SCHOLAR.NODE.LANG => ar
SCHOLAR.NODE.OWNER => null
SCHOLAR.NODE.TRANSLATION_ID => 408)].
Descriptor: RelationalDescriptor(edu.najah.scholar.entities.Node --> [DatabaseTable(SCHOLAR.NODE)])
org.eclipse.persistence.exceptions.DescriptorException.missingClassIndicatorField(DescriptorException.java:945)
org.eclipse.persistence.descriptors.InheritancePolicy.classFromRow(InheritancePolicy.java:341)
org.eclipse.persistence.internal.descriptors.ObjectBuilder.buildObject(ObjectBuilder.java:597)
org.eclipse.persistence.internal.descriptors.ObjectBuilder.buildObject(ObjectBuilder.java:568)
org.eclipse.persistence.queries.ObjectLevelReadQuery.buildObject(ObjectLevelReadQuery.java:733)
org.eclipse.persistence.queries.ReadObjectQuery.registerResultInUnitOfWork(ReadObjectQuery.java:774)
org.eclipse.persistence.queries.ReadObjectQuery.executeObjectLevelReadQuery(ReadObjectQuery.java:455)
org.eclipse.persistence.queries.ObjectLevelReadQuery.executeDatabaseQuery(ObjectLevelReadQuery.java:1097)
org.eclipse.persistence.queries.DatabaseQuery.execute(DatabaseQuery.java:829)
org.eclipse.persistence.queries.ObjectLevelReadQuery.execute(ObjectLevelReadQuery.java:1056)
org.eclipse.persistence.queries.ReadObjectQuery.execute(ReadObjectQuery.java:416)
org.eclipse.persistence.queries.ObjectLevelReadQuery.executeInUnitOfWork(ObjectLevelReadQuery.java:1144)
org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.internalExecuteQuery(UnitOfWorkImpl.java:2863)
org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:1501)
org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:1483)
org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:1443)
org.eclipse.persistence.internal.jpa.EntityManagerImpl.executeQuery(EntityManagerImpl.java:820)
org.eclipse.persistence.internal.jpa.EntityManagerImpl.findInternal(EntityManagerImpl.java:760)
org.eclipse.persistence.internal.jpa.EntityManagerImpl.find(EntityManagerImpl.java:653)
org.eclipse.persistence.internal.jpa.EntityManagerImpl.find(EntityManagerImpl.java:532)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
java.lang.reflect.Method.invoke(Method.java:601)
org.springframework.orm.jpa.ExtendedEntityManagerCreator$ExtendedEntityManagerInvocationHandler.invoke(ExtendedEntityManagerCreator.java:365)
$Proxy43.find(Unknown Source)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
java.lang.reflect.Method.invoke(Method.java:601)
org.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:240)
$Proxy43.find(Unknown Source)
edu.najah.scholar.spring.dao.NodeDaoImpl.find(NodeDaoImpl.java:43)
edu.najah.scholar.spring.bo.NodeBoImpl.find(NodeBoImpl.java:38)
edu.najah.scholar.spring.controller.JounralController.test(JounralController.java:91)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
java.lang.reflect.Method.invoke(Method.java:601)
org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:176)
org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:436)
org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:424)
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:900)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:827)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882)
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:778)
javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
note The full stack trace of the root cause is available in the Apache Tomcat/7.0.22 logs.
참고 : 나는 다형성 쿼리 (부모 엔티티 클래스를 쿼리)
이사람이 내 응용 프로그램을 구성 할 올바른 방향으로 날 지점 수를 사용하고 엔터티 클래스를 오른쪽으로 짜는 것?
참고 : glassfish (EJB sessionfacade 사용)에서 동일한 쿼리를 테스트했는데 정상적으로 작동합니다.
하지만 어떻게 이것을 인식 할 수 있습니까? 구성을 변경해야하는 이유는 무엇입니까? –
참조, http://wiki.eclipse.org/EclipseLink/UserGuide/JPA/Advanced_JPA_Development/Performance/Weaving – James