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I am using EclipseLink as my JPA implementation(in KARAF).And following jars are used:-

install -s mvn:org.eclipse.persistence/org.eclipse.persistence.antlr/2.5.0
install -s mvn:org.eclipse.persistence/org.eclipse.persistence.asm/2.5.0
install -s mvn:org.eclipse.persistence/org.eclipse.persistence.core/2.5.0
install -s mvn:org.apache.geronimo.specs/geronimo-jpa_2.0_spec/1.1
install -s mvn:org.osgi/org.osgi.compendium/4.2.0
install -s mvn:org.osgi/org.osgi.enterprise/4.2.0
org.eclipse.gemini.dbaccess.derby_1.0.0.M1-incubation.jar
org.eclipse.gemini.jpa.weaving_1.0.0.RC1.jar
org.eclipse.gemini.jpa_1.0.0.RC1.jar

My persistence.xml is :-

<?xml version="1.0" encoding="UTF-8"?>
<persistence version="1.0"
    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_1_0.xsd">

    <persistence-unit name="resource" transaction-type="RESOURCE_LOCAL">
    <provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
        <class>myPkg.entity.Resource</class>
        <properties>
            <property name="javax.persistence.jdbc.driver" value="org.apache.derby.jdbc.EmbeddedDriver" 
                /> <property name="javax.persistence.jdbc.url" value="jdbc:derby:DB;create=true" 
                />

            <!-- <property name="javax.persistence.jdbc.driver" value="org.apache.derby.jdbc.ClientDriver" />
            <property name="javax.persistence.jdbc.url" value="jdbc:derby://localhost:1527/D:\DB;create=true" /> -->


            <property name="javax.persistence.jdbc.user" value="test" />
            <property name="javax.persistence.jdbc.password" value="test" />
            <property name="eclipselink.logging.level" value="OFF" />

            <!-- EclipseLink should create the database schema automatically -->
            <property name="eclipselink.ddl-generation" value="create-tables" />
            <property name="eclipselink.ddl-generation.output-mode"
                value="database" />
            <property name="connection.autocommit" value="false" />
            <property name="eclipselink.persistence-context.flush-mode" value="commit" /> 
            <!-- <property name="eclipselink.allow-zero-id" value="true"/> -->
        </properties>
    </persistence-unit>
</persistence>

But the gemini.dbaccess.derby_1.0.0.M1-incubation jar remians in Installed state as well as the gemini.jpa.weaving jar remains in resolved state.

Restarting the gemini.dbaccess.derby_1.0.0.M1-incubation gives the following error:-

Reason: Missing Constraint: Import-Package: org.apache.derby.client.am; version="0.0.0"

And my application gives the following error:-

Could not find data source factory in registry: org.apache.derby.jdbc.ClientDriver

I am new to using eclipseLink in OSGI ,what am i missing here ?

4

3 回答 3

1

Apache karaf 4.0.0 已经发布，该版本的karaf 提供了eclipseLink 支持。

feature:install eclipselink

因此无需使用外部适配器来使用 eclipseLink

于 2015-07-21T18:18:36.580 回答
0

首先，确保您已安装了使用 Karaf 的区域功能，因为如果您使用的版本小于 4（尚未发布），则默认安装 Apache Aries Blueprint 实现。所以如果你想坚持双子座，这会干扰。因此，请确保您已安装区域。其次，我认为有一个用于安装 eclipse-link 捆绑包的功能。可能想看看它以对齐正确的捆绑包。

如果您坚持使用 Aries Blueprint impl，那就更简单了。只需安装以下功能： 

feature:install jpa jta jndi

而如果你想使用 Derby，可能还需要安装jdbc功能。这将为您提供一系列用于连接数据库和/或创建数据源的命令。如果您使用数据源命令，则可以为 derby 数据库创建数据源，如果需要，它将安装正确的工作 derby 客户端 jar。

于 2015-04-30T06:39:35.603 回答
0

这是org.eclipse.gemini.dbaccess.derby_1.0.0.M1-incubation.jar的清单内容：

Manifest-Version: 1.0
Bundle-ManifestVersion: 2
Bundle-Name: Gemini DBAccess (Incubation)
Bundle-SymbolicName: org.eclipse.gemini.dbaccess.derby
Bundle-Version: 1.0.0.M1-incubation
Bundle-Activator: org.eclipse.gemini.dbaccess.derby.Activator
Bundle-Vendor: Oracle Corporation
Bundle-RequiredExecutionEnvironment: J2SE-1.5
Import-Package: javax.sql,
org.apache.derby.client.am,
org.apache.derby.jdbc,
org.osgi.framework;version="[1.3,2)",
org.osgi.service.jdbc;version="[1.0,2.0)"

对Derby二进制文件仍有两个未解决的依赖项：

  • org.apache.derby.client.am
  • org.apache.derby.jdbc

两者都缺少版本号，这就是消息状态为0.0.0的原因。

这两个包是derbyclient.jar文件的一部分，作为 Derby 二进制文件中的 OSGi 包提供。问题是这个包的Export-Package子句只公开了org.apache.derby.jdbc包。

一个简单的解决方案是SpringSource -packaged bundle：它公开了两个必需的包。请注意，它对Java 事务 API有额外的依赖。

于 2015-04-29T06:33:32.420 回答