JPA 和 Apache Aries：持久性单元未解决的依赖性
JPA and Apache Aries: persistence unit unresolved dependency
我正在尝试为 mysql 和对应配置数据源。 Apache Aries 之上的持久性包。
这是数据源的蓝图文件
<bean id="mysqlDataSource" class="com.mysql.jdbc.jdbc2.optional.MysqlDataSource">
<property name="url" value="jdbc:mysql://matteos-mbp:3306/" />
<property name="user" value="root" />
<property name="password" value="root" />
<property name="databaseName" value="testDBBlueprint" />
<property name="createDatabaseIfNotExist" value="true" />
</bean>
<bean id="mysqlXADataSource" class="com.mysql.jdbc.jdbc2.optional.MysqlXADataSource">
<property name="url" value="jdbc:mysql://matteos-mbp:3306/" />
<property name="user" value="root" />
<property name="password" value="root" />
<property name="databaseName" value="testDBBlueprint" />
<property name="createDatabaseIfNotExist" value="true" />
</bean>
<service ref="mysqlDataSource" interface="javax.sql.DataSource">
<service-properties>
<entry key="osgi.jndi.service.name" value="jdbc/ddauthdb" />
</service-properties>
</service>
<service ref="mysqlXADataSource" interface="javax.sql.XADataSource">
<service-properties>
<entry key="osgi.jndi.service.name" value="jdbc/xaddauthdb" />
</service-properties>
</service>
这些是 entities/persistence 包（包 com.mycompany.jpa.auth.entities）的 persistence.xml 和 blueprint.xml 文件：
<?xml version="1.0" encoding="UTF-8"?>
<persistence
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"
version="2.0">
<persistence-unit name="ddauth">
<jta-data-source>
osgi:service/javax.sql.DataSource/(osgi.jndi.service.name=jdbc/xaddauthdb)
</jta-data-source>
<non-jta-data-source>
osgi:service/javax.sql.DataSource/(osgi.jndi.service.name=jdbc/ddauthdb)
</non-jta-data-source>
<class>com.mycompany.persistence.users.TestUser</class>
<exclude-unlisted-classes>true</exclude-unlisted-classes>
<properties>
<property
name="openjpa.jdbc.SynchronizeMappings"
value="buildSchema(ForeignKeys=true)" />
</properties>
</persistence-unit>
</persistence>
<?xml version="1.0" encoding="UTF-8"?>
<blueprint
xmlns="http://www.osgi.org/xmlns/blueprint/v1.0.0"
xmlns:jpa="http://aries.apache.org/xmlns/jpa/v1.0.0"
xmlns:tx="http://aries.apache.org/xmlns/transactions/v1.0.0">
<bean id="userService" class="com.mycompany.persistence.users.UserServiceImpl">
<tx:transaction method="*" value="Required" />
<jpa:context property="entityManager" unitname="ddauth"/>
</bean>
<bean
id="populator"
class="com.mycompany.persistence.users.Populator"
init-method="populate"
activation="eager" >
<property
name="userService"
ref="userService" />
</bean>
<service ref="userService" interface="com.mycompany.users.api.UserService" />
</blueprint>
我得到的错误是
org.ops4j.pax.logging.pax-logging-api[org.apache.aries.blueprint.container.BlueprintContainerImpl] : Unable to start blueprint container for bundle com.mycompany.jpa.auth.entities due to unresolved dependencies [(&(&(org.apache.aries.jpa.proxy.factory=true)(osgi.unit.name=ddauth))(objectClass=javax.persistence.EntityManagerFactory))]
java.util.concurrent.TimeoutException
at org.apache.aries.blueprint.container.BlueprintContainerImpl.run(BlueprintContainerImpl.java:336)
at org.apache.aries.blueprint.utils.threading.impl.DiscardableRunnable.run(DiscardableRunnable.java:48)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access1(ScheduledThreadPoolExecutor.java:180)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
org.ops4j.pax.logging.pax-logging-api[org.apache.aries.blueprint.container.BlueprintEventDispatcher] : Sending blueprint container event BlueprintEvent[type=FAILURE, dependencies=[(&(&(org.apache.aries.jpa.proxy.factory=true)(osgi.unit.name=ddauth))(objectClass=javax.persistence.EntityManagerFactory))], exception=null] for bundle com.mycompany.jpa.auth.entities
我的运行时间如下：
START LEVEL 1
ID|State |Level|Name
0|Active | 0|OSGi System Bundle (3.10.2.v20150203-1939)
1|Active | 1|aQute.xray.plugin (1.7.0.201403241317)
2|Active | 1|com.mycompany.db.mysql.auth (0.0.0.201506180714)
3|Active | 1|Oracle Corporation's JDBC Driver for MySQL (5.1.35)
4|Active | 1|Apache Commons Collections (3.2.1)
5|Active | 1|Apache Aries Blueprint Bundle (1.1.0)
6|Active | 1|Apache Aries Blueprint API (1.0.1)
7|Active | 1|Apache Aries Blueprint Core (1.4.2)
8|Active | 1|Aries JPA Container API (1.0.2)
9|Active | 1|Aries JPA Container blueprint integration for Aries blueprint (1.0.4)
10|Active | 1|Aries JPA Container (1.0.2)
11|Active | 1|Aries JPA Container Managed Contexts (1.0.4)
12|Active | 1|Apache Aries Proxy API (1.0.1)
13|Active | 1|Apache Aries Proxy Service (1.0.4)
14|Active | 1|Apache Aries Transaction Blueprint (1.0.2)
15|Active | 1|Apache Aries Transaction Manager (1.0.0)
16|Active | 1|Apache Aries Transaction Manager (1.1.1)
17|Active | 1|Apache Aries Util (1.1.0)
18|Active | 1|Commons Lang (2.6.0)
19|Active | 1|Commons Pool (1.6.0)
20|Active | 1|Apache CXF Core (3.1.1)
21|Active | 1|Apache CXF Runtime HTTP Transport (3.1.1)
22|Active | 1|Apache Felix Configuration Admin Service (1.8.0)
23|Active | 1|Apache Felix Gogo Command (0.14.0)
24|Active | 1|Apache Felix Gogo Runtime (0.12.1)
25|Active | 1|Apache Felix Gogo Shell (0.10.0)
26|Active | 1|Apache Felix Metatype Service (1.0.10)
27|Active | 1|Apache Felix Declarative Services (1.8.2)
28|Active | 1|Apache Felix Web Management Console (3.1.8)
29|Active | 1|Apache Geronimo JSR-317 JPA 2.0 Spec API (1.1.0)
30|Active | 1|geronimo-jta_1.1_spec (1.1.1)
31|Active | 1|OpenJPA Aggregate Jar (2.2.2)
32|Active | 1|Apache ServiceMix :: Bundles :: commons-dbcp (1.4.0.3)
33|Active | 1|XmlSchema Core (2.2.1)
34|Active | 1|Apache XBean OSGI Bundle Utilities (3.18.0)
35|Active | 1|Apache XBean :: Classpath Resource Finder (3.18.0)
36|Active | 1|hibernate-jpa-2.1-api (1.0.0.Final)
37|Active | 1|ASM all classes with debug info (5.0.3)
38|Active | 1|OPS4J Pax Logging - API (1.8.2)
39|Active | 1|OPS4J Pax Web - Jetty Bundle (4.1.2)
40|Active | 1|com.mycompany.jpa.auth.entities (0.0.0.201506180718)
你能帮我找出这里缺少的东西吗？调试这种情况的最佳方法是什么？
谢谢。
错误提示未能及时找到EntityManagerFactory。
有两个可能的原因。要么根本找不到持久化单元，要么在为其创建 EntityManagerFactory 时出错。
如果您在日志中没有看到其他错误，我怀疑根本无法识别持久性单元。请检查您的实体包清单中是否有 属性 元持久性：META-INF/persistence.xml。
另一个可能的问题可能是您在需要它们的同一个包中创建了数据源服务。由于只有在找到 EntityManageFactory 服务时才会出现蓝图，因此数据源可能永远不会启动。最好将它们放在另一个包中。使用 pax-jdbc-config.
更好地定义数据源
问题是由于我的运行时缺少大量包。要解决这个问题，只需查看 Apache Aries 示例中的 博客示例 项目并将该运行时复制到我的 bnd 文件中即可。
我添加的包如下：
- org.apache.aries.transaction.wrappers
- org.apache.aries.jpa.container
- org.apache.aries.jpa.container.context
- org.apache.geronimo.specs.geronimo-j2ee-connector_1.5_spec
- org.apache.geronimo.specs.geronimo-jpa_2.0_spec
- org.apache.geronimo.specs.geronimo-jta_1.1_spec
- org.apache.aries.jndi
- org.apache.commons.pool
- org.objectweb.asm.all
- org.apache.servicemix.bundles.serp
我正在尝试为 mysql 和对应配置数据源。 Apache Aries 之上的持久性包。 这是数据源的蓝图文件
<bean id="mysqlDataSource" class="com.mysql.jdbc.jdbc2.optional.MysqlDataSource">
<property name="url" value="jdbc:mysql://matteos-mbp:3306/" />
<property name="user" value="root" />
<property name="password" value="root" />
<property name="databaseName" value="testDBBlueprint" />
<property name="createDatabaseIfNotExist" value="true" />
</bean>
<bean id="mysqlXADataSource" class="com.mysql.jdbc.jdbc2.optional.MysqlXADataSource">
<property name="url" value="jdbc:mysql://matteos-mbp:3306/" />
<property name="user" value="root" />
<property name="password" value="root" />
<property name="databaseName" value="testDBBlueprint" />
<property name="createDatabaseIfNotExist" value="true" />
</bean>
<service ref="mysqlDataSource" interface="javax.sql.DataSource">
<service-properties>
<entry key="osgi.jndi.service.name" value="jdbc/ddauthdb" />
</service-properties>
</service>
<service ref="mysqlXADataSource" interface="javax.sql.XADataSource">
<service-properties>
<entry key="osgi.jndi.service.name" value="jdbc/xaddauthdb" />
</service-properties>
</service>
这些是 entities/persistence 包（包 com.mycompany.jpa.auth.entities）的 persistence.xml 和 blueprint.xml 文件：
<?xml version="1.0" encoding="UTF-8"?>
<persistence
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"
version="2.0">
<persistence-unit name="ddauth">
<jta-data-source>
osgi:service/javax.sql.DataSource/(osgi.jndi.service.name=jdbc/xaddauthdb)
</jta-data-source>
<non-jta-data-source>
osgi:service/javax.sql.DataSource/(osgi.jndi.service.name=jdbc/ddauthdb)
</non-jta-data-source>
<class>com.mycompany.persistence.users.TestUser</class>
<exclude-unlisted-classes>true</exclude-unlisted-classes>
<properties>
<property
name="openjpa.jdbc.SynchronizeMappings"
value="buildSchema(ForeignKeys=true)" />
</properties>
</persistence-unit>
</persistence>
<?xml version="1.0" encoding="UTF-8"?>
<blueprint
xmlns="http://www.osgi.org/xmlns/blueprint/v1.0.0"
xmlns:jpa="http://aries.apache.org/xmlns/jpa/v1.0.0"
xmlns:tx="http://aries.apache.org/xmlns/transactions/v1.0.0">
<bean id="userService" class="com.mycompany.persistence.users.UserServiceImpl">
<tx:transaction method="*" value="Required" />
<jpa:context property="entityManager" unitname="ddauth"/>
</bean>
<bean
id="populator"
class="com.mycompany.persistence.users.Populator"
init-method="populate"
activation="eager" >
<property
name="userService"
ref="userService" />
</bean>
<service ref="userService" interface="com.mycompany.users.api.UserService" />
</blueprint>
我得到的错误是
org.ops4j.pax.logging.pax-logging-api[org.apache.aries.blueprint.container.BlueprintContainerImpl] : Unable to start blueprint container for bundle com.mycompany.jpa.auth.entities due to unresolved dependencies [(&(&(org.apache.aries.jpa.proxy.factory=true)(osgi.unit.name=ddauth))(objectClass=javax.persistence.EntityManagerFactory))]
java.util.concurrent.TimeoutException
at org.apache.aries.blueprint.container.BlueprintContainerImpl.run(BlueprintContainerImpl.java:336)
at org.apache.aries.blueprint.utils.threading.impl.DiscardableRunnable.run(DiscardableRunnable.java:48)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access1(ScheduledThreadPoolExecutor.java:180)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
org.ops4j.pax.logging.pax-logging-api[org.apache.aries.blueprint.container.BlueprintEventDispatcher] : Sending blueprint container event BlueprintEvent[type=FAILURE, dependencies=[(&(&(org.apache.aries.jpa.proxy.factory=true)(osgi.unit.name=ddauth))(objectClass=javax.persistence.EntityManagerFactory))], exception=null] for bundle com.mycompany.jpa.auth.entities
我的运行时间如下：
START LEVEL 1
ID|State |Level|Name
0|Active | 0|OSGi System Bundle (3.10.2.v20150203-1939)
1|Active | 1|aQute.xray.plugin (1.7.0.201403241317)
2|Active | 1|com.mycompany.db.mysql.auth (0.0.0.201506180714)
3|Active | 1|Oracle Corporation's JDBC Driver for MySQL (5.1.35)
4|Active | 1|Apache Commons Collections (3.2.1)
5|Active | 1|Apache Aries Blueprint Bundle (1.1.0)
6|Active | 1|Apache Aries Blueprint API (1.0.1)
7|Active | 1|Apache Aries Blueprint Core (1.4.2)
8|Active | 1|Aries JPA Container API (1.0.2)
9|Active | 1|Aries JPA Container blueprint integration for Aries blueprint (1.0.4)
10|Active | 1|Aries JPA Container (1.0.2)
11|Active | 1|Aries JPA Container Managed Contexts (1.0.4)
12|Active | 1|Apache Aries Proxy API (1.0.1)
13|Active | 1|Apache Aries Proxy Service (1.0.4)
14|Active | 1|Apache Aries Transaction Blueprint (1.0.2)
15|Active | 1|Apache Aries Transaction Manager (1.0.0)
16|Active | 1|Apache Aries Transaction Manager (1.1.1)
17|Active | 1|Apache Aries Util (1.1.0)
18|Active | 1|Commons Lang (2.6.0)
19|Active | 1|Commons Pool (1.6.0)
20|Active | 1|Apache CXF Core (3.1.1)
21|Active | 1|Apache CXF Runtime HTTP Transport (3.1.1)
22|Active | 1|Apache Felix Configuration Admin Service (1.8.0)
23|Active | 1|Apache Felix Gogo Command (0.14.0)
24|Active | 1|Apache Felix Gogo Runtime (0.12.1)
25|Active | 1|Apache Felix Gogo Shell (0.10.0)
26|Active | 1|Apache Felix Metatype Service (1.0.10)
27|Active | 1|Apache Felix Declarative Services (1.8.2)
28|Active | 1|Apache Felix Web Management Console (3.1.8)
29|Active | 1|Apache Geronimo JSR-317 JPA 2.0 Spec API (1.1.0)
30|Active | 1|geronimo-jta_1.1_spec (1.1.1)
31|Active | 1|OpenJPA Aggregate Jar (2.2.2)
32|Active | 1|Apache ServiceMix :: Bundles :: commons-dbcp (1.4.0.3)
33|Active | 1|XmlSchema Core (2.2.1)
34|Active | 1|Apache XBean OSGI Bundle Utilities (3.18.0)
35|Active | 1|Apache XBean :: Classpath Resource Finder (3.18.0)
36|Active | 1|hibernate-jpa-2.1-api (1.0.0.Final)
37|Active | 1|ASM all classes with debug info (5.0.3)
38|Active | 1|OPS4J Pax Logging - API (1.8.2)
39|Active | 1|OPS4J Pax Web - Jetty Bundle (4.1.2)
40|Active | 1|com.mycompany.jpa.auth.entities (0.0.0.201506180718)
你能帮我找出这里缺少的东西吗？调试这种情况的最佳方法是什么？
谢谢。
错误提示未能及时找到EntityManagerFactory。
有两个可能的原因。要么根本找不到持久化单元，要么在为其创建 EntityManagerFactory 时出错。
如果您在日志中没有看到其他错误，我怀疑根本无法识别持久性单元。请检查您的实体包清单中是否有 属性 元持久性：META-INF/persistence.xml。
另一个可能的问题可能是您在需要它们的同一个包中创建了数据源服务。由于只有在找到 EntityManageFactory 服务时才会出现蓝图，因此数据源可能永远不会启动。最好将它们放在另一个包中。使用 pax-jdbc-config.
更好地定义数据源问题是由于我的运行时缺少大量包。要解决这个问题，只需查看 Apache Aries 示例中的 博客示例 项目并将该运行时复制到我的 bnd 文件中即可。
我添加的包如下：
- org.apache.aries.transaction.wrappers
- org.apache.aries.jpa.container
- org.apache.aries.jpa.container.context
- org.apache.geronimo.specs.geronimo-j2ee-connector_1.5_spec
- org.apache.geronimo.specs.geronimo-jpa_2.0_spec
- org.apache.geronimo.specs.geronimo-jta_1.1_spec
- org.apache.aries.jndi
- org.apache.commons.pool
- org.objectweb.asm.all
- org.apache.servicemix.bundles.serp