EclipseLink JPA“本上下文中的无效表”与@OneToMany地图 [英] EclipseLink JPA "invalid table in this context" with @OneToMany Map
本文介绍了EclipseLink JPA“本上下文中的无效表”与@OneToMany地图的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我正在尝试为设置JPA注释映射< String，Phone> 并获取以下堆栈跟踪。
异常[EclipseLink-6069] （Eclipse Persistence Services - 2.4.1.v20121003-ad44345）：org.eclipse.persistence.exceptions.QueryException
异常描述：此表达式中的字段[EMPLOYEE.PHONE_TYPE]在此上下文中具有无效的表。
查询：ReadAllQuery（name =phonesreferenceClass = Phone）
在org.eclipse.persistence.exceptions.QueryException.invalidTableForFieldInExpression（QueryException.java:739）
在org.eclipse.persistence .internal.expressions.FieldExpression.validateNode（FieldExpression.java:281）
在org.eclipse.persistence.expressions.Expression.normalize（Expression.java:3259）
在org.eclipse.persistence.internal .expressions.DataExpression.normalize（DataExpression.java:369）
在org.eclipse.persistence.internal.expressions.FieldExpression.normalize（FieldExpression.java:208）
在org.eclipse.persistence.internal .expressions.SQLSelectStatement.normalize（SQLSelectStatement.java:1377）
在org.eclipse.persistence.internal.queries.ExpressionQueryMechanism.buildNormalSelectStatement（ExpressionQueryMechanism.java:546）
在org.eclipse.persistence.internal .queries.ExpressionQueryMechanism.prepareSelectAllRows（ExpressionQueryMechanism.java:1700）
在org.eclipse.persistence.queries.ReadAllQuery.prepareSelectAllRows（ReadAllQuery.java:721）
在org.eclipse.persistence.queries.ReadAllQuery.prepare（ReadAllQuery.java:657）
在org.eclipse .persistence.queries.DatabaseQuery.checkPrepare（DatabaseQuery.java:614）
在org.eclipse.persistence.queries.ObjectLevelReadQuery.checkPrepare（ObjectLevelReadQuery.java:883）
在org.eclipse.persistence.queries .DatabaseQuery.checkPrepare（DatabaseQuery.java:575）
在org.eclipse.persistence.queries.DatabaseQuery.execute（DatabaseQuery.java:820）
在org.eclipse.persistence.queries.ObjectLevelReadQuery.execute （ObjectLevelReadQuery.java:1109）
在org.eclipse.persistence.queries.ReadAllQuery.execute（ReadAllQuery.java:393）
在org.eclipse.persistence.queries.ObjectLevelReadQuery.executeInUnitOfWork（ObjectLevelReadQuery.java ：1197）
在org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.internalExecuteQuery（UnitOfWorkImpl.java:2875）
在org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery（AbstractSession.java:1602）
在org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery（AbstractSession.java:1584）
在org.eclipse.persistence.internal.indirection.QueryBasedValueHolder.instantiate（QueryBasedValueHolder.java:112）
在org.eclipse.persistence.internal.indirection.QueryBasedValueHolder.instantiate（QueryBasedValueHolder.java:99）
在org.eclipse.persistence.internal.indirection.DatabaseValueHolder.getValue（DatabaseValueHolder.java:88）
在org.eclipse.persistence.internal.indirection.UnitOfWorkValueHolder.instantiateImpl（UnitOfWorkValueHolder.java:161）
at org.eclipse.persistence.internal.indirection.UnitOfWorkValueHolder.instantiate（UnitOfWorkValueHolder.java:222）
在org.eclipse.persistence.internal.indirection.DatabaseValueHolder.getValue（DatabaseValueHolder.java:88）
在org.eclipse.persistence.indirection.IndirectMap .buildDelegate（IndirectMap.java:110）
在org.eclipse.persistence.indirection.IndirectMap.getDelegate（IndirectMap.java:330）
在org.eclipse.persistence.indirection.IndirectMap.size（间接映射.java：637）
在org.eclipse.persistence.internal.queries.MapContainerPolicy.sizeFor（MapContainerPolicy.java:830）
在org.eclipse.persistence.internal.indirection.TransparentIndirectionPolicy.instantiateObject（TransparentIndirectionPolicy .java：386）
在org.eclipse.persistence.mappings.ForeignReferenceMapping.buildCloneFromRow（ForeignReferenceMapping.java:285）
在org.eclipse.persistence.internal.descriptors.ObjectBuilder.buildAttributesIntoWorkingCopyClone（ObjectBuilder.java ：1594）
在org.eclipse.persistence.internal.descriptors.ObjectBuilder.buildWorkingCopyCloneFromRow（ObjectBuilder.java:1741）
在org.eclipse.persistence.internal.descriptors.ObjectBuilder.buildObjectInUnitOfWork（ObjectBuilder.java ：668）
在org.eclipse.persisten ce.internal.descriptors.ObjectBuilder.buildObject（ObjectBuilder.java:605）
在org.eclipse.persistence.internal.descriptors.ObjectBuilder.buildObject（ObjectBuilder.java:564）
在org.eclipse。 persistence.queries.ObjectLevelReadQuery.buildObject（ObjectLevelReadQuery.java:777）
在org.eclipse.persistence.queries.ReadAllQuery.registerResultInUnitOfWork（ReadAllQuery.java:783）
在org.eclipse.persistence.queries。 ReadAllQuery.executeObjectLevelReadQuery（ReadAllQuery.java:434）
在org.eclipse.persistence.queries.ObjectLevelReadQuery.executeDatabaseQuery（ObjectLevelReadQuery.java:1150）
在org.eclipse.persistence.queries.DatabaseQuery.execute（ DatabaseQuery.java:852）
在org.eclipse.persistence.queries.ObjectLevelReadQuery.execute（ObjectLevelReadQuery.java:1109）
在org.eclipse.persistence.queries.ReadAllQuery.execute（ReadAllQuery.java： 393）
在org.eclipse.persistence.queries.ObjectLevelReadQuery.executeInUnitOfWork（ObjectLeve lReadQuery.java:1197）
在org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.internalExecuteQuery（UnitOfWorkImpl.java:2875）
在org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery（ AbstractSession.java:1602）
在org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery（AbstractSession.java:1584）
在org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery（ AbstractSession.java:1549）
在org.eclipse.persistence.internal.jpa.QueryImpl.executeReadQuery（QueryImpl.java:231）
在org.eclipse.persistence.internal.jpa.QueryImpl.getResultList（ QueryImpl.java:411）
at aaa.Test.main（Test.java:20）
创建的表格如下所示：
EMP_PHONE
============= ====================
EMP_ID PHONES_ID PHONE_TYPE
------ --------- ---- ------
42 1 NULL
EMPLOYEE
================== = ============
ID
-
42
PHONE
===== ==========================
ID NUM
- --------
1 867-5309
NULL PHONE_TYPE 似乎告诉我一些有趣的事情，eclipselink正在寻找 EMPLOYEE.PHONE_TYPE 的方式让我认为它正在考虑从 PHONE - > EMPLOYEE 而不是其他方式的关系。
JPA实体定义如下。电话地图是单向的，Phone对象应由多个Employees共享（不是我的实际类型，但是这个简化示例演示了这个问题）
@Entity
public class Employee {
@Id private long id;
@OneToMany（cascade = CascadeType.ALL）
@JoinTable（name =EMP_PHONE，joinColumns = @ JoinColumn（name =EMP_ID））
@MapKeyColumn =PHONE_TYPE）
private Map< String，Phone> phones = new HashMap< String，Phone>（）;
public Employee（）{}
public Employee（long id）{
this.id = id;
}
public long getId（）{
return id;
}
public Map< String，Phone> getPhones（）{
返回手机;
}
}
@Entity
public class Phone {
@Id
private long id;
private String num;
public String getNum（）{
return num;
}
public Phone（）{}
public Phone（String num）{
this.num = num;
}
public Phone（long id，String num）{
this.id = id;
this.num = num;
}
public long getId（）{
return id;
}
}
使用以下测试代码
EntityManagerFactory factory = Persistence.createEntityManagerFactory（test）;
EntityManager em = factory.createEntityManager（）;
员工员工=新员工（42）;
//异常会发生有或没有手机添加到地图
employee.getPhones（）。put（home，new Phone（1，867-5309））;
em.getTransaction（）。begin（）;
em.persist（employee）;
em.getTransaction（）。commit（）;
查询q = em.createQuery（从Employee o中选择o）;
q.setHint（javax.persistence.cache.storeMode，REFRESH）;
q.getResultList（）; // EXCEPTION THROWN HERE
和persistence.xml：
<？xml version ='1.0'encoding ='UTF-8'？>
< 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_2_0.xsd'
version ='2.0'xmlns ='http：//java.sun.com/xml/ NS /持久'>
< persistence-unit name ='test'transaction-type ='RESOURCE_LOCAL'>
< provider> org.eclipse.persistence.jpa.PersistenceProvider< / provider>
< class> aaa.Phone< / class>
< class> aaa.Employee< / class>
< shared-cache-mode> NONE< / shared-cache-mode>
<属性>
< property name ='javax.persistence.jdbc.user'value ='uuuuuuuu'/>
< property name ='javax.persistence.jdbc.password'value ='pppppppp'/>
< property name ='javax.persistence.jdbc.driver'
value ='oracle.jdbc.driver.OracleDriver'/>
< property name ='javax.persistence.jdbc.url'
value ='jdbc：oracle：thin：@localhost：1521：xe'/>
< property name ='eclipselink.ddl-generation'
value ='drop-and-create-tables'/>
< property name ='eclipselink.ddl-generation.output-mode'value ='database'/>
< / properties>
< / persistence-unit>
< / persistence>
我在Windows 7上运行，使用Oracle XE 11g作为数据库。感谢您的任何见解！
解决方案
这看起来像EclipseLink bug 364922 ：
具有单向OneToMany属性和@MapKeyColumn注释创建了正确的数据库表，映射表包含键列，但持久化实体仅填充id列而不是密钥列。持久性操作不会引发错误，但后续查询很快就会失败以下错误：
异常描述：此表达式中的字段[ORGANIZATION.MAILINGADDRESSES_KEY]在此上下文中具有无效的表。
为什么值得，我使用Hibernate / H2测试了你的代码，它的工作正常。
更新
我刚刚使用EclipseLink测试过，如果您明确地设置了 MapKeyColumn ，密钥正确填充。即：
@MapKeyColumn（name =PHONE_TYPE，table =EMP_PHONE）
I'm hoping I'm just doing something silly here...
I'm trying to set up JPA annotations for a Map<String, Phone> and getting the following stack trace.
Exception [EclipseLink-6069] (Eclipse Persistence Services - 2.4.1.v20121003-ad44345): org.eclipse.persistence.exceptions.QueryException
Exception Description: The field [EMPLOYEE.PHONE_TYPE] in this expression has an invalid table in this context.
Query: ReadAllQuery(name="phones" referenceClass=Phone )
at org.eclipse.persistence.exceptions.QueryException.invalidTableForFieldInExpression(QueryException.java:739)
at org.eclipse.persistence.internal.expressions.FieldExpression.validateNode(FieldExpression.java:281)
at org.eclipse.persistence.expressions.Expression.normalize(Expression.java:3259)
at org.eclipse.persistence.internal.expressions.DataExpression.normalize(DataExpression.java:369)
at org.eclipse.persistence.internal.expressions.FieldExpression.normalize(FieldExpression.java:208)
at org.eclipse.persistence.internal.expressions.SQLSelectStatement.normalize(SQLSelectStatement.java:1377)
at org.eclipse.persistence.internal.queries.ExpressionQueryMechanism.buildNormalSelectStatement(ExpressionQueryMechanism.java:546)
at org.eclipse.persistence.internal.queries.ExpressionQueryMechanism.prepareSelectAllRows(ExpressionQueryMechanism.java:1700)
at org.eclipse.persistence.queries.ReadAllQuery.prepareSelectAllRows(ReadAllQuery.java:721)
at org.eclipse.persistence.queries.ReadAllQuery.prepare(ReadAllQuery.java:657)
at org.eclipse.persistence.queries.DatabaseQuery.checkPrepare(DatabaseQuery.java:614)
at org.eclipse.persistence.queries.ObjectLevelReadQuery.checkPrepare(ObjectLevelReadQuery.java:883)
at org.eclipse.persistence.queries.DatabaseQuery.checkPrepare(DatabaseQuery.java:575)
at org.eclipse.persistence.queries.DatabaseQuery.execute(DatabaseQuery.java:820)
at org.eclipse.persistence.queries.ObjectLevelReadQuery.execute(ObjectLevelReadQuery.java:1109)
at org.eclipse.persistence.queries.ReadAllQuery.execute(ReadAllQuery.java:393)
at org.eclipse.persistence.queries.ObjectLevelReadQuery.executeInUnitOfWork(ObjectLevelReadQuery.java:1197)
at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.internalExecuteQuery(UnitOfWorkImpl.java:2875)
at org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:1602)
at org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:1584)
at org.eclipse.persistence.internal.indirection.QueryBasedValueHolder.instantiate(QueryBasedValueHolder.java:112)
at org.eclipse.persistence.internal.indirection.QueryBasedValueHolder.instantiate(QueryBasedValueHolder.java:99)
at org.eclipse.persistence.internal.indirection.DatabaseValueHolder.getValue(DatabaseValueHolder.java:88)
at org.eclipse.persistence.internal.indirection.UnitOfWorkValueHolder.instantiateImpl(UnitOfWorkValueHolder.java:161)
at org.eclipse.persistence.internal.indirection.UnitOfWorkValueHolder.instantiate(UnitOfWorkValueHolder.java:222)
at org.eclipse.persistence.internal.indirection.DatabaseValueHolder.getValue(DatabaseValueHolder.java:88)
at org.eclipse.persistence.indirection.IndirectMap.buildDelegate(IndirectMap.java:110)
at org.eclipse.persistence.indirection.IndirectMap.getDelegate(IndirectMap.java:330)
at org.eclipse.persistence.indirection.IndirectMap.size(IndirectMap.java:637)
at org.eclipse.persistence.internal.queries.MapContainerPolicy.sizeFor(MapContainerPolicy.java:830)
at org.eclipse.persistence.internal.indirection.TransparentIndirectionPolicy.instantiateObject(TransparentIndirectionPolicy.java:386)
at org.eclipse.persistence.mappings.ForeignReferenceMapping.buildCloneFromRow(ForeignReferenceMapping.java:285)
at org.eclipse.persistence.internal.descriptors.ObjectBuilder.buildAttributesIntoWorkingCopyClone(ObjectBuilder.java:1594)
at org.eclipse.persistence.internal.descriptors.ObjectBuilder.buildWorkingCopyCloneFromRow(ObjectBuilder.java:1741)
at org.eclipse.persistence.internal.descriptors.ObjectBuilder.buildObjectInUnitOfWork(ObjectBuilder.java:668)
at org.eclipse.persistence.internal.descriptors.ObjectBuilder.buildObject(ObjectBuilder.java:605)
at org.eclipse.persistence.internal.descriptors.ObjectBuilder.buildObject(ObjectBuilder.java:564)
at org.eclipse.persistence.queries.ObjectLevelReadQuery.buildObject(ObjectLevelReadQuery.java:777)
at org.eclipse.persistence.queries.ReadAllQuery.registerResultInUnitOfWork(ReadAllQuery.java:783)
at org.eclipse.persistence.queries.ReadAllQuery.executeObjectLevelReadQuery(ReadAllQuery.java:434)
at org.eclipse.persistence.queries.ObjectLevelReadQuery.executeDatabaseQuery(ObjectLevelReadQuery.java:1150)
at org.eclipse.persistence.queries.DatabaseQuery.execute(DatabaseQuery.java:852)
at org.eclipse.persistence.queries.ObjectLevelReadQuery.execute(ObjectLevelReadQuery.java:1109)
at org.eclipse.persistence.queries.ReadAllQuery.execute(ReadAllQuery.java:393)
at org.eclipse.persistence.queries.ObjectLevelReadQuery.executeInUnitOfWork(ObjectLevelReadQuery.java:1197)
at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.internalExecuteQuery(UnitOfWorkImpl.java:2875)
at org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:1602)
at org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:1584)
at org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:1549)
at org.eclipse.persistence.internal.jpa.QueryImpl.executeReadQuery(QueryImpl.java:231)
at org.eclipse.persistence.internal.jpa.QueryImpl.getResultList(QueryImpl.java:411)
at aaa.Test.main(Test.java:20)
The created tables look like:
EMP_PHONE
=================================
EMP_ID PHONES_ID PHONE_TYPE
------ --------- ----------
42 1 NULL
EMPLOYEE
=================================
ID
--
42
PHONE
=================================
ID NUM
-- --------
1 867-5309
The NULL PHONE_TYPE seems to tell me something funky is going on, and the way that eclipselink is looking for EMPLOYEE.PHONE_TYPE makes me think it's thinking about the relationship from PHONE->EMPLOYEE rather than the other way around.
the JPA entities are defined as follows. The phones map is unidirectional, and Phone objects should be shared by multiple Employees (not my actual types, but this simplified example demonstrates the problem)
@Entity
public class Employee {
@Id private long id;
@OneToMany(cascade=CascadeType.ALL)
@JoinTable(name="EMP_PHONE", joinColumns=@JoinColumn(name="EMP_ID"))
@MapKeyColumn(name="PHONE_TYPE")
private Map<String, Phone> phones = new HashMap<String, Phone>();
public Employee() {}
public Employee(long id) {
this.id = id;
}
public long getId() {
return id;
}
public Map<String, Phone> getPhones() {
return phones;
}
}
@Entity
public class Phone {
@Id
private long id;
private String num;
public String getNum() {
return num;
}
public Phone() {}
public Phone(String num) {
this.num = num;
}
public Phone(long id, String num) {
this.id = id;
this.num = num;
}
public long getId() {
return id;
}
}
using the following test code
EntityManagerFactory factory = Persistence.createEntityManagerFactory("test");
EntityManager em = factory.createEntityManager();
Employee employee = new Employee(42);
// exception will occur with or without phones added to the map
employee.getPhones().put("home", new Phone(1, "867-5309"));
em.getTransaction().begin();
em.persist(employee);
em.getTransaction().commit();
Query q = em.createQuery("select o from Employee o");
q.setHint("javax.persistence.cache.storeMode", "REFRESH");
q.getResultList(); // EXCEPTION THROWN HERE
and persistence.xml:
<?xml version='1.0' encoding='UTF-8' ?>
<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_2_0.xsd'
version='2.0' xmlns='http://java.sun.com/xml/ns/persistence'>
<persistence-unit name='test' transaction-type='RESOURCE_LOCAL'>
<provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
<class>aaa.Phone</class>
<class>aaa.Employee</class>
<shared-cache-mode>NONE</shared-cache-mode>
<properties>
<property name='javax.persistence.jdbc.user' value='uuuuuuuu' />
<property name='javax.persistence.jdbc.password' value='pppppppp' />
<property name='javax.persistence.jdbc.driver'
value='oracle.jdbc.driver.OracleDriver' />
<property name='javax.persistence.jdbc.url'
value='jdbc:oracle:thin:@localhost:1521:xe' />
<property name='eclipselink.ddl-generation'
value='drop-and-create-tables' />
<property name='eclipselink.ddl-generation.output-mode' value='database' />
</properties>
</persistence-unit>
</persistence>
I'm running on Windows 7, using Oracle XE 11g as the database. Thanks in advance for any insights!
解决方案
This looks like EclipseLink bug 364922:
An entity with uni-directional OneToMany property and @MapKeyColumn annotation has the correct database tables created, with the mapping table containing a "key column, but persisting an entity only populates the id columns and not the key column. The persist operation does not throw an error, but subsequent queries soon fail with the following error: Exception Description: The field [ORGANIZATION.MAILINGADDRESSES_KEY] in this expression has an invalid table in this context.
For what it's worth, I tested your code using Hibernate/H2 and it works fine.
UPDATE
I just tested this with EclipseLink. If you explicitly set the table for the MapKeyColumn, the key is populated correctly. i.e.:
@MapKeyColumn(name="PHONE_TYPE", table="EMP_PHONE")
这篇关于EclipseLink JPA“本上下文中的无效表”与@OneToMany地图的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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