Karaf-HiberNate-MariaDB"无法完成模式更新"错误

Question

我试图设置一个项目与Karaf 4.0.4 HiberNate 4.3.6。最终，我使用MariaDB 10.0.23作为数据库。

我遵循并尝试了本教程，但：

• 而不是使用数据源blueprint.xml我想使用pax-jdbc-config来创建一个数据源（因为数据源蓝图不建议使用）。
• 而不是MySQL，我必须使用MariaDB。所以我假设我必须更改一些配置文件来使用MariaDB驱动程序

因此，这是我的配置：

>

组织。ops4j。数据源sampleprj。cfg：

osgi.jdbc.driver.name=mariadb
osgi.jdbc.driver.class=org.mariadb.jdbc.Driver
url=jdbc:mysql://DB_SERVER:3306/sampleprjdb
dataSourceName=sampleprj
databaseName=sampleprjdb
user=myuser
password=mypassword

我确信我的数据库凭据和数据库名称是正确的。

样本prj束

<?xml version="1.0" encoding="UTF-8"?> 
<persistence version="2.0"
    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_2_0.xsd">
    <persistence-unit name="sampleprj" transaction-type="JTA">
        <provider>org.hibernate.jpa.HibernatePersistenceProvider</provider>
        <jta-data-source>
            osgi:service/javax.sql.DataSource/(osgi.jndi.service.name=jdbc/sampleprj)      
        </jta-data-source>
        <properties>
            <property name="hibernate.dialect"     value="org.hibernate.dialect.MySQL5Dialect" />
            <property name="hibernate.hbm2ddl.auto" value="update" />
            <property name="hibernate.show_sql" value="true" />
            <property name="hibernate.format_sql" value="true" />
        </properties>
    </persistence-unit>
</persistence>

在

样本prj束

<?xml version="1.0" encoding="UTF-8"?>
<blueprint default-activation="eager"
    xmlns="http://www.osgi.org/xmlns/blueprint/v1.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:jpa="http://aries.apache.org/xmlns/jpa/v1.0.0" xmlns:tx="http://aries.apache.org/xmlns/transactions/v1.0.0"

    xsi:schemaLocation="
            http://www.osgi.org/xmlns/blueprint/v1.0.0 http://www.osgi.org/xmlns/blueprint/v1.0.0 
            http://www.w3.org/2001/XMLSchema-instance     http://www.w3.org/2001/XMLSchema-instance 
            http://aries.apache.org/xmlns/jpa/v1.0.0 http://aries.apache.org/xmlns/jpa/v1.0.0 
            http://aries.apache.org/xmlns/transactions/v1.0.0 http://aries.apache.org/xmlns/transactions/v1.0.0 ">

    <bean id="dbService"
        class="org.sample.project.persistence.mariadb.impl.DbServiceImpl">
        <jpa:context unitname="sampleprj" property="em"/>
        <tx:transaction method="*" value="Required" />
    </bean>

    <service ref="dbService" interface="org.sample.project.IDbService" />

</blueprint>

样本prj束

<project>

...

<build>
    <plugins>
        <plugin>
            <groupId>org.apache.felix</groupId>
            <artifactId>maven-bundle-plugin</artifactId>
            <extensions>true</extensions>
            <configuration>
                <instructions>
                    <Bundle-SymbolicName>${project.artifactId}</Bundle-SymbolicName>
                    <Meta-Persistence>META-INF/persistence.xml</Meta-Persistence>
                    <Bundle-Version>1.0.0</Bundle-Version>
                    <Bundle-ManifestVersion>2</Bundle-ManifestVersion>
                    <Manifest-Version>1</Manifest-Version>
                    <Import-Package>
                    org.apache.felix.service.command;version="[0.6,1)",
                    org.apache.felix.gogo.commands;version="[0.6,1)",
                    org.apache.karaf.shell.console;version="[2.2,4)",
                    org.hibernate.proxy,
                    javassist.util.proxy,
                    *
                    </Import-Package>
                </instructions>
            </configuration>
        </plugin>
    </plugins>
</build>

...

</project>

我也可以确认结果清单。MF包含元持久化属性。

在Karaf（clean）start上，我使用以下命令安装依赖包：

feature:repo-add mvn:org.ops4j.pax.jdbc/pax-jdbc-features/0.5.0/xml/features
feature:install transaction jndi pax-jdbc-mariadb pax-jdbc-config pax-jdbc-pool-dbcp2 jpa hibernate

当我使用bundle:list时，所有的bundle似乎都已安装并处于活动状态。

最后，我使用这个命令来安装我的示例包：

bundle:install mvn:org.sample.prj/sample-prj/1.0

但它会打印这些日志信息：

2016-02-22 15:38:44,035 | ERROR | pool-36-thread-1 | SchemaUpdate                     | 199 - org.jboss.logging.jboss-logging - 3.1.4.GA | HHH000299: Could not complete schema update
java.lang.NullPointerException
    at org.hibernate.tool.hbm2ddl.SchemaUpdate.execute(SchemaUpdate.java:227)[188:org.hibernate.core:4.3.6.Final]
    at org.hibernate.tool.hbm2ddl.SchemaUpdate.execute(SchemaUpdate.java:178)[188:org.hibernate.core:4.3.6.Final]
    at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:522)[188:org.hibernate.core:4.3.6.Final]
    at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1857)[188:org.hibernate.core:4.3.6.Final]
    at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl$4.perform(EntityManagerFactoryBuilderImpl.java:850)[189:org.hibernate.entitymanager:4.3.6.Final]
    at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl$4.perform(EntityManagerFactoryBuilderImpl.java:843)[189:org.hibernate.entitymanager:4.3.6.Final]
    at org.hibernate.boot.registry.classloading.internal.ClassLoaderServiceImpl.withTccl(ClassLoaderServiceImpl.java:398)[188:org.hibernate.core:4.3.6.Final]
    at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:842)[189:org.hibernate.entitymanager:4.3.6.Final]
    at org.hibernate.osgi.OsgiPersistenceProvider.createContainerEntityManagerFactory(OsgiPersistenceProvider.java:112)[190:org.hibernate.osgi:4.3.6.Final]
    at org.apache.aries.jpa.container.impl.PersistenceProviderTracker.createAndCloseDummyEMF(PersistenceProviderTracker.java:105)[79:org.apache.aries.jpa.container:2.3.0]
    at org.apache.aries.jpa.container.impl.PersistenceProviderTracker.addingService(PersistenceProviderTracker.java:85)[79:org.apache.aries.jpa.container:2.3.0]
    at org.apache.aries.jpa.container.impl.PersistenceProviderTracker.addingService(PersistenceProviderTracker.java:44)[79:org.apache.aries.jpa.container:2.3.0]
    at org.osgi.util.tracker.ServiceTracker$Tracked.customizerAdding(ServiceTracker.java:941)[org.osgi.core-6.0.0.jar:]
    at org.osgi.util.tracker.ServiceTracker$Tracked.customizerAdding(ServiceTracker.java:870)[org.osgi.core-6.0.0.jar:]
    at org.osgi.util.tracker.AbstractTracked.trackAdding(AbstractTracked.java:256)[org.osgi.core-6.0.0.jar:]
    at org.osgi.util.tracker.AbstractTracked.trackInitial(AbstractTracked.java:183)[org.osgi.core-6.0.0.jar:]
    at org.osgi.util.tracker.ServiceTracker.open(ServiceTracker.java:318)[org.osgi.core-6.0.0.jar:]
    at org.osgi.util.tracker.ServiceTracker.open(ServiceTracker.java:261)[org.osgi.core-6.0.0.jar:]
    at org.apache.aries.jpa.container.impl.PersistenceBundleTracker.trackProvider(PersistenceBundleTracker.java:106)[79:org.apache.aries.jpa.container:2.3.0]
    at org.apache.aries.jpa.container.impl.PersistenceBundleTracker.findPersistenceUnits(PersistenceBundleTracker.java:90)[79:org.apache.aries.jpa.container:2.3.0]
    at org.apache.aries.jpa.container.impl.PersistenceBundleTracker.addingBundle(PersistenceBundleTracker.java:69)[79:org.apache.aries.jpa.container:2.3.0]
    at org.apache.aries.jpa.container.impl.PersistenceBundleTracker.addingBundle(PersistenceBundleTracker.java:40)[79:org.apache.aries.jpa.container:2.3.0]
    at org.osgi.util.tracker.BundleTracker$Tracked.customizerAdding(BundleTracker.java:469)[org.osgi.core-6.0.0.jar:]
    at org.osgi.util.tracker.BundleTracker$Tracked.customizerAdding(BundleTracker.java:415)[org.osgi.core-6.0.0.jar:]
    at org.osgi.util.tracker.AbstractTracked.trackAdding(AbstractTracked.java:256)[org.osgi.core-6.0.0.jar:]
    at org.osgi.util.tracker.AbstractTracked.trackInitial(AbstractTracked.java:183)[org.osgi.core-6.0.0.jar:]
    at org.osgi.util.tracker.BundleTracker.open(BundleTracker.java:156)[org.osgi.core-6.0.0.jar:]
    at org.apache.aries.jpa.container.impl.Activator.start(Activator.java:43)[79:org.apache.aries.jpa.container:2.3.0]
    at org.apache.felix.framework.util.SecureAction.startActivator(SecureAction.java:697)[org.apache.felix.framework-5.4.0.jar:]
    at org.apache.felix.framework.Felix.activateBundle(Felix.java:2226)[org.apache.felix.framework-5.4.0.jar:]
    at org.apache.felix.framework.Felix.startBundle(Felix.java:2144)[org.apache.felix.framework-5.4.0.jar:]
    at org.apache.felix.framework.BundleImpl.start(BundleImpl.java:998)[org.apache.felix.framework-5.4.0.jar:]
    at org.apache.felix.framework.BundleImpl.start(BundleImpl.java:984)[org.apache.felix.framework-5.4.0.jar:]
    at org.apache.karaf.features.internal.service.FeaturesServiceImpl.startBundle(FeaturesServiceImpl.java:1199)[9:org.apache.karaf.features.core:4.0.4]
    at org.apache.karaf.features.internal.service.Deployer.deploy(Deployer.java:840)[9:org.apache.karaf.features.core:4.0.4]
    at org.apache.karaf.features.internal.service.FeaturesServiceImpl.doProvision(FeaturesServiceImpl.java:1089)[9:org.apache.karaf.features.core:4.0.4]
    at org.apache.karaf.features.internal.service.FeaturesServiceImpl$1.call(FeaturesServiceImpl.java:985)[9:org.apache.karaf.features.core:4.0.4]
    at java.util.concurrent.FutureTask.run(FutureTask.java:262)[:1.7.0_45]
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)[:1.7.0_45]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)[:1.7.0_45]
    at java.lang.Thread.run(Thread.java:744)[:1.7.0_45]

我怀疑这里缺少了一些配置。我错过了什么？

谢谢，埃姆雷。




Answer 1

这可能是白羊座JPA 2中的一个问题。查理·莫丹特今天刚刚给我写了一封邮件，里面有他用白羊座JPA 2做的一些测试的结果。他提到了Hibernate的类似行为，如果他也希望模式由持久性提供者创建的话。

本教程的主要区别可能在于，本教程使用了一个不需要凭据即可登录的嵌入式应用程序。我将尝试在白羊座JPA考试中重现这个问题。你能在Apache Aries Jira中对此提出一个问题吗？