如何在eclipse开普勒的maven中使用datanucleus的增强功能？答案

【问题标题】：How to use datanucleus's enhances within maven in eclipse kepler?如何在eclipse开普勒的maven中使用datanucleus的增强功能？
【发布时间】：2014-04-25 21:02:46
【问题描述】：

显然the documentations已经过时，甚至有错误。

这是我的 POM 文件：

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>mg.labs.jdo</groupId>
    <artifactId>jdo-enhancement</artifactId>
    <version>1.0</version>
    <packaging>jar</packaging>

    <name>jdo-enhancement</name>
    <url>http://maven.apache.org</url>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.datanucleus</groupId>
            <artifactId>datanucleus-accessplatform-jdo-rdbms</artifactId>
            <version>3.3.0-release</version>
            <type>pom</type>
        </dependency>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>3.8.1</version>
            <scope>test</scope>
        </dependency>
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.datanucleus</groupId>
                <artifactId>datanucleus-maven-plugin</artifactId>
                <version>3.3.0-release</version>
                <configuration>
                    <api>JDO</api>
                    <props>${basedir}/datanucleus.properties</props>
                    <log4jConfiguration>${basedir}/log4j.properties</log4jConfiguration>
                    <verbose>true</verbose>
                </configuration>
                <executions>
                    <execution>
                        <phase>process-classes</phase>
                        <goals>
                            <goal>enhance</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
            <plugin>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>1.7</source>
                    <target>1.7</target>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

文档中针对旧版本说明的 api 和增强器版本。如何改用3.3.8 或4.0.0.M2？简单地改变数字是行不通的！
Eclipse 显示以下错误Plugin execution not covered by lifecycle configuration: org.datanucleus:datanucleus-maven-plugin:3.3.0-release:enhance (execution: default, phase: process-classes)
运行目标install 显示以下错误：

插件（Bundle）“org.datanucleus”已经注册。确保类路径中没有同一个插件的多个 JAR 版本。 URL "file:/home/mgelbana/.m2/repository/org/datanucleus/datanucleus-core/3.2.5/datanucleus-core-3.2.5.jar" 已注册，您正在尝试注册相同的插件位于 URL“file:/home/mgelbana/.m2/repository/org/datanucleus/datanucleus-core/4.0.0-m2/datanucleus-core-4.0.0-m2.jar.”

虽然我没有包含3.2.5 和4.0.0-m2 的版本。我希望我可以使用最新版本，但我不知道如何，正如我所说，更改版本号无法按预期工作。

我的主要目标是在打包之前运行包并增强类，这正是文档试图做的。 如何使用最新的 datanculeus 发布版本来做到这一点？

编辑我按照尼尔的建议进行了调试，我认为有一点很重要：（开头，这些行表示包含的 maven 依赖项的依赖项）

[DEBUG] mg.labs.jdo:jdo-enhancement:jar:1.0
[DEBUG]    org.datanucleus:datanucleus-accessplatform-jdo-rdbms:pom:3.3.0-release:compile
[DEBUG]       javax.jdo:jdo-api:jar:3.0.1:compile
[DEBUG]          javax.transaction:jta:jar:1.1:compile
[DEBUG]       org.datanucleus:datanucleus-core:jar:3.2.5:compile
[DEBUG]       org.datanucleus:datanucleus-api-jdo:jar:3.2.4:compile
[DEBUG]       org.datanucleus:datanucleus-jdo-query:jar:3.0.2:compile
[DEBUG]       org.datanucleus:datanucleus-rdbms:jar:3.2.4:compile
[DEBUG]    junit:junit:jar:3.8.1:test

（开头的这些行表示datanucleus插件的一些意外事件，例如无法下载元数据xml文件并包含datanucleus-core 4.0.0-m3文件，后续行只是错误包含的结果)

[INFO] --- datanucleus-maven-plugin:3.3.0-release:enhance (default) @ jdo-enhancement ---
[DEBUG] Could not find metadata org.datanucleus:datanucleus-core/maven-metadata.xml in local (/home/mgelbana/.m2/repository)
[DEBUG] Skipped remote update check for org.datanucleus:datanucleus-core/maven-metadata.xml, locally cached metadata up-to-date.
[DEBUG] Using connector WagonRepositoryConnector with priority 0.0 for http://www.datanucleus.org/downloads/maven2/
[DEBUG] Using connector WagonRepositoryConnector with priority 0.0 for https://oss.sonatype.org/content/repositories/snapshots
Downloading: https://oss.sonatype.org/content/repositories/snapshots/org/datanucleus/datanucleus-core/maven-metadata.xml
Downloading: http://www.datanucleus.org/downloads/maven2/org/datanucleus/datanucleus-core/maven-metadata.xml
[DEBUG] Writing tracking file /home/mgelbana/.m2/repository/org/datanucleus/datanucleus-core/resolver-status.properties
[DEBUG] Writing tracking file /home/mgelbana/.m2/repository/org/datanucleus/datanucleus-core/resolver-status.properties
[DEBUG] Could not find metadata org.datanucleus:datanucleus-core/maven-metadata.xml in DN_M2_Repo (http://www.datanucleus.org/downloads/maven2/)
[DEBUG] Could not find metadata org.datanucleus:datanucleus-core/maven-metadata.xml in sonatype-nexus-snapshots (https://oss.sonatype.org/content/repositories/snapshots)
[DEBUG] Dependency collection stats: {ConflictMarker.analyzeTime=0, ConflictMarker.markTime=0, ConflictMarker.nodeCount=41, ConflictIdSorter.graphTime=1, ConflictIdSorter.topsortTime=0, ConflictIdSorter.conflictIdCount=18, ConflictIdSorter.conflictIdCycleCount=0, ConflictResolver.totalTime=1, ConflictResolver.conflictItemCount=40, DefaultDependencyCollector.collectTime=6063, DefaultDependencyCollector.transformTime=2}
[DEBUG] org.datanucleus:datanucleus-maven-plugin:jar:3.3.0-release:
[DEBUG]    org.datanucleus:datanucleus-core:jar:4.0.0-m3:runtime
[DEBUG]    org.codehaus.plexus:plexus-utils:jar:3.0.8:compile
[DEBUG]    org.apache.maven:maven-artifact:jar:3.0.4:compile
[DEBUG]    org.apache.maven:maven-plugin-api:jar:3.0.4:compile
[DEBUG]       org.apache.maven:maven-model:jar:3.0.4:compile
[DEBUG]       org.sonatype.sisu:sisu-inject-plexus:jar:2.3.0:compile
[DEBUG]          org.codehaus.plexus:plexus-component-annotations:jar:1.5.5:compile
[DEBUG]          org.sonatype.sisu:sisu-inject-bean:jar:2.3.0:compile
[DEBUG]             org.sonatype.sisu:sisu-guice:jar:no_aop:3.1.0:compile
[DEBUG]                org.sonatype.sisu:sisu-guava:jar:0.9.9:compile
[DEBUG]    org.codehaus.plexus:plexus-container-default:jar:1.5.5:compile
[DEBUG]       org.codehaus.plexus:plexus-classworlds:jar:2.2.2:compile
[DEBUG]       org.apache.xbean:xbean-reflect:jar:3.4:compile
[DEBUG]          log4j:log4j:jar:1.2.12:compile
[DEBUG]          commons-logging:commons-logging-api:jar:1.1:compile
[DEBUG]       com.google.collections:google-collections:jar:1.0:compile
[DEBUG]       junit:junit:jar:3.8.2:compile
[DEBUG] Created new class realm plugin>org.datanucleus:datanucleus-maven-plugin:3.3.0-release
[DEBUG] Importing foreign packages into class realm plugin>org.datanucleus:datanucleus-maven-plugin:3.3.0-release
[DEBUG]   Imported:  < maven.api
[DEBUG] Populating class realm plugin>org.datanucleus:datanucleus-maven-plugin:3.3.0-release
[DEBUG]   Included: org.datanucleus:datanucleus-maven-plugin:jar:3.3.0-release
[DEBUG]   Included: org.datanucleus:datanucleus-core:jar:4.0.0-m3
[DEBUG]   Included: org.codehaus.plexus:plexus-utils:jar:3.0.8
[DEBUG]   Included: org.codehaus.plexus:plexus-component-annotations:jar:1.5.5
[DEBUG]   Included: org.sonatype.sisu:sisu-inject-bean:jar:2.3.0
[DEBUG]   Included: org.sonatype.sisu:sisu-guice:jar:no_aop:3.1.0
[DEBUG]   Included: org.sonatype.sisu:sisu-guava:jar:0.9.9
[DEBUG]   Included: org.apache.xbean:xbean-reflect:jar:3.4
[DEBUG]   Included: log4j:log4j:jar:1.2.12
[DEBUG]   Included: commons-logging:commons-logging-api:jar:1.1
[DEBUG]   Included: com.google.collections:google-collections:jar:1.0
[DEBUG]   Included: junit:junit:jar:3.8.2
[DEBUG]   Excluded: org.apache.maven:maven-artifact:jar:3.0.4
[DEBUG]   Excluded: org.apache.maven:maven-plugin-api:jar:3.0.4
[DEBUG]   Excluded: org.apache.maven:maven-model:jar:3.0.4
[DEBUG]   Excluded: org.sonatype.sisu:sisu-inject-plexus:jar:2.3.0
[DEBUG]   Excluded: org.codehaus.plexus:plexus-container-default:jar:1.5.5
[DEBUG]   Excluded: org.codehaus.plexus:plexus-classworlds:jar:2.2.2
[DEBUG] Configuring mojo org.datanucleus:datanucleus-maven-plugin:3.3.0-release:enhance from plugin realm ClassRealm[plugin>org.datanucleus:datanucleus-maven-plugin:3.3.0-release, parent: sun.misc.Launcher$AppClassLoader@591ce4fe]
[DEBUG] Configuring mojo 'org.datanucleus:datanucleus-maven-plugin:3.3.0-release:enhance' with basic configurator -->
[DEBUG]   (f) alwaysDetachable = false
[DEBUG]   (f) api = JDO
[DEBUG]   (f) classpathElements = [/home/mgelbana/workspace/kepler_maven_by_example/jdo-enhancement/target/classes, /home/mgelbana/.m2/repository/javax/jdo/jdo-api/3.0.1/jdo-api-3.0.1.jar, /home/mgelbana/.m2/repository/javax/transaction/jta/1.1/jta-1.1.jar, /home/mgelbana/.m2/repository/org/datanucleus/datanucleus-core/3.2.5/datanucleus-core-3.2.5.jar, /home/mgelbana/.m2/repository/org/datanucleus/datanucleus-api-jdo/3.2.4/datanucleus-api-jdo-3.2.4.jar, /home/mgelbana/.m2/repository/org/datanucleus/datanucleus-jdo-query/3.0.2/datanucleus-jdo-query-3.0.2.jar, /home/mgelbana/.m2/repository/org/datanucleus/datanucleus-rdbms/3.2.4/datanucleus-rdbms-3.2.4.jar]
[DEBUG]   (f) detachListener = false
[DEBUG]   (f) fork = true
[DEBUG]   (f) generateConstructor = true
[DEBUG]   (f) generatePK = true
[DEBUG]   (f) log4jConfiguration = /home/mgelbana/workspace/kepler_maven_by_example/jdo-enhancement/log4j.properties
[DEBUG]   (f) metadataDirectory = /home/mgelbana/workspace/kepler_maven_by_example/jdo-enhancement/target/classes
[DEBUG]   (f) metadataIncludes = **/*.jdo, **/*.class
[DEBUG]   (f) pluginArtifacts = [org.datanucleus:datanucleus-maven-plugin:maven-plugin:3.3.0-release:, org.datanucleus:datanucleus-core:jar:4.0.0-m3:runtime, org.codehaus.plexus:plexus-utils:jar:3.0.8:compile, org.codehaus.plexus:plexus-component-annotations:jar:1.5.5:compile, org.sonatype.sisu:sisu-inject-bean:jar:2.3.0:compile, org.sonatype.sisu:sisu-guice:jar:no_aop:3.1.0:compile, org.sonatype.sisu:sisu-guava:jar:0.9.9:compile, org.apache.xbean:xbean-reflect:jar:3.4:compile, log4j:log4j:jar:1.2.12:compile, commons-logging:commons-logging-api:jar:1.1:compile, com.google.collections:google-collections:jar:1.0:compile, junit:junit:jar:3.8.2:compile]
[DEBUG]   (f) quiet = false
[DEBUG]   (f) verbose = true
[DEBUG] -- end configuration --
[DEBUG] Metadata Directory is : /home/mgelbana/workspace/kepler_maven_by_example/jdo-enhancement/target/classes
[DEBUG] Executing command line:
[DEBUG] /bin/sh -c java -cp /home/mgelbana/.m2/repository/org/datanucleus/datanucleus-maven-plugin/3.3.0-release/datanucleus-maven-plugin-3.3.0-release.jar:/home/mgelbana/.m2/repository/org/datanucleus/datanucleus-core/4.0.0-m3/datanucleus-core-4.0.0-m3.jar:/home/mgelbana/.m2/repository/org/codehaus/plexus/plexus-utils/3.0.8/plexus-utils-3.0.8.jar:/home/mgelbana/.m2/repository/org/codehaus/plexus/plexus-component-annotations/1.5.5/plexus-component-annotations-1.5.5.jar:/home/mgelbana/.m2/repository/org/sonatype/sisu/sisu-inject-bean/2.3.0/sisu-inject-bean-2.3.0.jar:/home/mgelbana/.m2/repository/org/sonatype/sisu/sisu-guice/3.1.0/sisu-guice-3.1.0-no_aop.jar:/home/mgelbana/.m2/repository/org/sonatype/sisu/sisu-guava/0.9.9/sisu-guava-0.9.9.jar:/home/mgelbana/.m2/repository/org/apache/xbean/xbean-reflect/3.4/xbean-reflect-3.4.jar:/home/mgelbana/.m2/repository/log4j/log4j/1.2.12/log4j-1.2.12.jar:/home/mgelbana/.m2/repository/commons-logging/commons-logging-api/1.1/commons-logging-api-1.1.jar:/home/mgelbana/.m2/repository/com/google/collections/google-collections/1.0/google-collections-1.0.jar:/home/mgelbana/.m2/repository/junit/junit/3.8.2/junit-3.8.2.jar:/home/mgelbana/workspace/kepler_maven_by_example/jdo-enhancement/target/classes:/home/mgelbana/.m2/repository/javax/jdo/jdo-api/3.0.1/jdo-api-3.0.1.jar:/home/mgelbana/.m2/repository/javax/transaction/jta/1.1/jta-1.1.jar:/home/mgelbana/.m2/repository/org/datanucleus/datanucleus-core/3.2.5/datanucleus-core-3.2.5.jar:/home/mgelbana/.m2/repository/org/datanucleus/datanucleus-api-jdo/3.2.4/datanucleus-api-jdo-3.2.4.jar:/home/mgelbana/.m2/repository/org/datanucleus/datanucleus-jdo-query/3.0.2/datanucleus-jdo-query-3.0.2.jar:/home/mgelbana/.m2/repository/org/datanucleus/datanucleus-rdbms/3.2.4/datanucleus-rdbms-3.2.4.jar -Dlog4j.configuration=file:/home/mgelbana/workspace/kepler_maven_by_example/jdo-enhancement/log4j.properties org.datanucleus.enhancer.DataNucleusEnhancer -v -api JDO /home/mgelbana/workspace/kepler_maven_by_example/jdo-enhancement/target/classes/mg/labs/jdo/enhancement/App.class /home/mgelbana/workspace/kepler_maven_by_example/jdo-enhancement/target/classes/mg/labs/jdo/enhancement/QApp.class
[DEBUG] Exit code: 1
[DEBUG] --------------------
[DEBUG]  Standard output from the DataNucleus tool org.datanucleus.enhancer.DataNucleusEnhancer :
[DEBUG] --------------------
[INFO] 
[DEBUG] --------------------
[ERROR] --------------------
[ERROR]  Standard error from the DataNucleus tool + org.datanucleus.enhancer.DataNucleusEnhancer :
[ERROR] --------------------
[ERROR] Exception in thread "main" Plugin (Bundle) "org.datanucleus" is already registered. Ensure you dont have multiple JAR versions of the same plugin in the classpath. The URL "file:/home/mgelbana/.m2/repository/org/datanucleus/datanucleus-core/3.2.5/datanucleus-core-3.2.5.jar" is already registered, and you are trying to register an identical plugin located at URL "file:/home/mgelbana/.m2/repository/org/datanucleus/datanucleus-core/4.0.0-m3/datanucleus-core-4.0.0-m3.jar."
org.datanucleus.exceptions.NucleusException: Plugin (Bundle) "org.datanucleus" is already registered. Ensure you dont have multiple JAR versions of the same plugin in the classpath. The URL "file:/home/mgelbana/.m2/repository/org/datanucleus/datanucleus-core/3.2.5/datanucleus-core-3.2.5.jar" is already registered, and you are trying to register an identical plugin located at URL "file:/home/mgelbana/.m2/repository/org/datanucleus/datanucleus-core/4.0.0-m3/datanucleus-core-4.0.0-m3.jar."

【问题讨论】：

标签： maven-3 jdo datanucleus eclipse-kepler

【解决方案1】：

好吧，当我想使用它时，我只是将所有版本都更改为最新的 4.0.0-m2。再简单不过了。

【讨论】：

org.datanucleusdatanucleus-accessplatform-jdo-rdbms4.0.0-m2-releasepom ，适合你吗？它对我不起作用。我应该配置一个特定的存储库吗？
为什么期望 4.0.0-m2-release 对任何人都有效？没有这样的发布。任何人都可以查看 Maven Central 并看到最新版本是“4.0.0-m2”。此外，您的 POM 中有两个版本，我说将所有版本都更改为最新版本。
好的，我将所有版本更改为 3.3.8 以及在 maven 存储库中找到的依赖项和插件，但我仍然收到相同的 maven 错误：Plugin execution not covered by lifecycle configuration: org.datanucleus:datanucleus-maven-plugin:3.3.8:enhance (execution: default, phase: process-classes)
Eclipse m2e 插件不支持 3rd 方插件执行。这些插件是自己执行的。这是 Eclipse m2e 插件，与 DataNucleus 无关。你说你使用了一些旧版本的 DataNucleus，但是 Eclipse m2e 也永远无法执行。
为什么不直接下载DataNucleus 提供的教程并使用Maven 运行呢？最新版本似乎标记为 4.0（使用 4.0.0-m1）。也适合我

【解决方案2】：

感谢 Neil 建议检查 datanucleus's samples，这是一个配置了 JDO 增强器的功能正常的 POM 文件：

<project xmlns="http://maven.apache.org/POM/4.0.0"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>org.datanucleus</groupId>
    <artifactId>datanucleus-samples-jdo-tutorial</artifactId>
    <packaging>jar</packaging>
    <version>4.0</version>
    <name>DataNucleus AccessPlatform Tutorial for JDO</name>
    <url>http://www.datanucleus.org</url>

    <repositories>
        <repository>
            <id>DN_M2_Repo</id>
            <name>DataNucleus Repository</name>
            <url>http://www.datanucleus.org/downloads/maven2</url>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </repository>
    </repositories>

    <pluginRepositories>
        <pluginRepository>
            <id>DataNucleus_2</id>
            <url>http://www.datanucleus.org/downloads/maven2/</url>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </pluginRepository>
    </pluginRepositories>

    <dependencies>
        <dependency>
            <groupId>org.datanucleus</groupId>
            <artifactId>datanucleus-core</artifactId>
            <version>[4.0.0-m1, )</version>
        </dependency>
        <dependency>
            <groupId>org.datanucleus</groupId>
            <artifactId>datanucleus-api-jdo</artifactId>
            <version>[4.0.0-m1, )</version>
        </dependency>
        <dependency>
            <groupId>javax.jdo</groupId>
            <artifactId>jdo-api</artifactId>
            <version>[3.0, )</version>
        </dependency>
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>[1.2, 1.3)</version>
        </dependency>

        <!-- ENABLE THIS FOR H2 -->
        <dependency>
            <groupId>org.datanucleus</groupId>
            <artifactId>datanucleus-rdbms</artifactId>
            <version>[4.0.0-m1, )</version>
        </dependency>
        <dependency>
            <groupId>com.h2database</groupId>
            <artifactId>h2</artifactId>
            <version>1.3.168</version>
        </dependency>

        <!-- ENABLE THIS FOR HSQLDB -->
        <!--dependency>
            <groupId>org.datanucleus</groupId>
            <artifactId>datanucleus-rdbms</artifactId>
            <version>[4.0.0-m1, )</version>
        </dependency>
        <dependency>
            <groupId>hsqldb</groupId>
            <artifactId>hsqldb</artifactId>
            <version>1.8.0.4</version>
        </dependency-->

        <!-- ENABLE THIS FOR MYSQL -->
        <!--dependency>
            <groupId>org.datanucleus</groupId>
            <artifactId>datanucleus-rdbms</artifactId>
            <version>[4.0.0-m1, )</version>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.17</version>
        </dependency-->

        <!-- ENABLE THIS FOR ODF -->
        <!--dependency>
            <groupId>org.datanucleus</groupId>
            <artifactId>datanucleus-odf</artifactId>
            <version>[4.0.0-m1, )</version>
        </dependency>
        <dependency>
            <groupId>org.odftoolkit</groupId>
            <artifactId>odfdom-java</artifactId>
            <version>0.8.7</version>
        </dependency>
        <dependency>
            <groupId>xerces</groupId>
            <artifactId>xercesImpl</artifactId>
            <version>[2.8, 3.0)</version>
        </dependency-->

        <!-- ENABLE THIS FOR EXCEL -->
        <!--dependency>
            <groupId>org.datanucleus</groupId>
            <artifactId>datanucleus-excel</artifactId>
            <version>[4.0.0-m1, )</version>
        </dependency>
        <dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi</artifactId>
            <version>3.6</version>
        </dependency-->

        <!-- ENABLE THIS FOR MongoDB -->
        <!--dependency>
            <groupId>org.datanucleus</groupId>
            <artifactId>datanucleus-mongodb</artifactId>
            <version>[4.0.0-m1, )</version>
        </dependency>
        <dependency>
            <groupId>org.mongodb</groupId>
            <artifactId>mongo-java-driver</artifactId>
            <version>[2.5, 3.0)</version>
        </dependency-->

        <!-- ENABLE THIS FOR HBase -->
        <!--dependency>
            <groupId>org.datanucleus</groupId>
            <artifactId>datanucleus-hbase</artifactId>
            <version>[4.0.0-m1, )</version>
        </dependency>
        <dependency>
            <groupId>org.apache.hadoop</groupId>
            <artifactId>hadoop-core</artifactId>
            <version>1.0.3</version>
            <exclusions>
                <exclusion>
                    <groupId>org.codehaus.jackson</groupId>
                    <artifactId>jackson-mapper-asl</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>org.codehaus.jackson</groupId>
                    <artifactId>jackson-core-asl</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>org.apache.hbase</groupId>
            <artifactId>hbase</artifactId>
            <version>0.94.1</version>
        </dependency>
        <dependency>
            <groupId>commons-logging</groupId>
            <artifactId>commons-logging</artifactId>
            <version>1.1</version>
        </dependency>
        <dependency>
            <groupId>org.apache.zookeeper</groupId>
            <artifactId>zookeeper</artifactId>
            <version>3.4.3</version>
        </dependency-->

        <!-- ENABLE THIS FOR Neo4j -->
        <!--dependency>
            <groupId>org.datanucleus</groupId>
            <artifactId>datanucleus-neo4j</artifactId>
            <version>[4.0.0-m1, )</version>
        </dependency>
        <dependency>
            <groupId>org.neo4j</groupId>
            <artifactId>neo4j</artifactId>
            <version>1.7.2</version>
        </dependency-->

        <!-- ENABLE THIS FOR Cassandra -->
        <!--dependency>
            <groupId>org.datanucleus</groupId>
            <artifactId>datanucleus-cassandra</artifactId>
            <version>[4.0.0-m1, )</version>
        </dependency>
        <dependency>
            <groupId>com.datastax.cassandra</groupId>
            <artifactId>cassandra-driver-core</artifactId>
            <version>2.0.0-rc2</version>
        </dependency-->
    </dependencies>

    <build>
        <resources>
            <resource>
                <directory>${basedir}/src/main/resources</directory>
                <includes>
                    <include>**/*.xml</include>
                    <include>**/*.jdo</include>
                    <include>**/*.orm</include>
                    <include>**/*.properties</include>
                </includes>
            </resource>
        </resources>

        <plugins>
            <plugin>
                <artifactId>maven-clean-plugin</artifactId>
                <version>2.4.1</version>
                <configuration>
                    <filesets>
                        <fileset>
                            <directory>${basedir}</directory>
                            <includes>
                                <include>*.log</include>
                                <include>tutorial.ods</include>
                                <include>tutorial.xls</include>
                                <include>testDB</include>
                            </includes>
                        </fileset>
                    </filesets>
                </configuration>
            </plugin>

            <plugin>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>2.3.2</version>
                <!--configuration>
                    <source>1.6</source>
                    <target>1.6</target>
                </configuration-->
            </plugin>
            <plugin>
                <groupId>org.datanucleus</groupId>
                <artifactId>datanucleus-maven-plugin</artifactId>
                <version>4.0.0-m1</version>
                <configuration>
                    <api>JDO</api>
                    <persistenceUnitName>Tutorial</persistenceUnitName>
                    <log4jConfiguration>${basedir}/log4j.properties</log4jConfiguration>
                    <verbose>false</verbose>
                </configuration>
                <executions>
                    <execution>
                        <phase>compile</phase>
                        <goals>
                            <goal>enhance</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
            <plugin>
                <groupId>org.codehaus.mojo</groupId>
                <artifactId>exec-maven-plugin</artifactId>
                <version>1.1</version>
                <configuration>
                    <mainClass>org.datanucleus.samples.jdo.tutorial.Main</mainClass>
                    <systemProperties>
                        <systemProperty>
                            <key>log4j.configuration</key>
                            <value>file:${basedir}/log4j.properties</value>
                        </systemProperty>
                    </systemProperties>
                </configuration>
            </plugin>
            <plugin>
                <artifactId>maven-assembly-plugin</artifactId>
                <version>2.2.1</version>
                <configuration>
                    <descriptors>
                        <descriptor>${basedir}/assembly.xml</descriptor>
                    </descriptors>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

【讨论】：