<?xml version="1.0"?>

<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"

"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">



<hibernate-mapping>

    <class name="com.liangjing.hibernate.entities.n21.Customer" table="CUSTOMERS">

    

        <id name="customerId" type="java.lang.Integer">

            <column name="CUSTOMER_ID" />

            <generator class="native" />

        </id>

        

        <property name="customerName" type="java.lang.String">

            <column name="CUSTOMER_NAME" />

        </property>

        

    </class>

    

</hibernate-mapping>

<?xml version="1.0"?>

<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"

"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">



<hibernate-mapping>



    <class name="com.liangjing.hibernate.entities.n21.Order" table="ORDERS">

        <id name="orderId" type="java.lang.Integer">

            <column name="ORDER_ID" />

            <generator class="native" />

        </id>

        

        <property name="orderName" type="java.lang.String">

            <column name="ORDER_NAME" />

        </property>

        

        <many-to-one name="customer" class="com.liangjing.hibernate.entities.n21.Customer">

            <column name="CUSTOMER_ID" />

        </many-to-one>

        

    </class>

    

</hibernate-mapping>

	@Test

	public void testMany2One(){

		Customer customer = new Customer();

		customer.setCustomerName("AA");

		

		Order order1 = new Order();

		order1.setOrderName("ORDER-1");

		

		Order order2 = new Order();

		order2.setOrderName("ORDER-2");

		

		order1.setCustomer(customer);

		order2.setCustomer(customer);

		

		session.save(customer);

		session.save(order1);

		session.save(order2);

	}

org.hibernate.tool.schema.spi.SchemaManagementException: Attempt to resolve foreign key metadata from JDBC metadata failed to find column mappings for foreign key named [FKflgddyesjyik2ro2p501yys8r]

	at org.hibernate.tool.schema.extract.internal.InformationExtractorJdbcDatabaseMetaDataImpl$ForeignKeyBuilderImpl.build(InformationExtractorJdbcDatabaseMetaDataImpl.java:727)

	at org.hibernate.tool.schema.extract.internal.InformationExtractorJdbcDatabaseMetaDataImpl$ForeignKeyBuilderImpl.build(InformationExtractorJdbcDatabaseMetaDataImpl.java:708)

	at org.hibernate.tool.schema.extract.internal.InformationExtractorJdbcDatabaseMetaDataImpl.getForeignKeys(InformationExtractorJdbcDatabaseMetaDataImpl.java:691)

	at org.hibernate.tool.schema.extract.internal.TableInformationImpl.foreignKeys(TableInformationImpl.java:88)

	at org.hibernate.tool.schema.extract.internal.TableInformationImpl.getForeignKey(TableInformationImpl.java:99)

	at org.hibernate.tool.schema.internal.SchemaMigratorImpl.findMatchingForeignKey(SchemaMigratorImpl.java:530)

	at org.hibernate.tool.schema.internal.SchemaMigratorImpl.applyForeignKeys(SchemaMigratorImpl.java:506)

	at org.hibernate.tool.schema.internal.SchemaMigratorImpl.performMigration(SchemaMigratorImpl.java:315)

	at org.hibernate.tool.schema.internal.SchemaMigratorImpl.doMigration(SchemaMigratorImpl.java:137)

	at org.hibernate.tool.schema.internal.SchemaMigratorImpl.doMigration(SchemaMigratorImpl.java:110)

	at org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.performDatabaseAction(SchemaManagementToolCoordinator.java:176)

	at org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.process(SchemaManagementToolCoordinator.java:65)

	at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:308)

	at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build(SessionFactoryBuilderImpl.java:476)

	at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:707)

	at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:723)

	at com.liangjing.hibernate.entities.n21.HibernateTest.init(HibernateTest.java:22)

	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

	at java.lang.reflect.Method.invoke(Method.java:497)

	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)

	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)

	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)

	at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:24)

	at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)

	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)

	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)

	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)

	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)

	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)

	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)

	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)

	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)

	at org.junit.runners.ParentRunner.run(ParentRunner.java:363)

	at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86)

	at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)

	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)

	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)

	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)

	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)



java.lang.NullPointerException

	at com.liangjing.hibernate.entities.n21.HibernateTest.destroy(HibernateTest.java:29)

	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

	at java.lang.reflect.Method.invoke(Method.java:497)

	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)

	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)

	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)

	at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:33)

	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)

	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)

	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)

	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)

	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)

	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)

	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)

	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)

	at org.junit.runners.ParentRunner.run(ParentRunner.java:363)

	at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86)

	at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)

	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)

	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)

	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)

	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)