java - OrientDB“找不到命令请求的命令执行器”错误

我最初将此作为错误发布在OrientDB issue tracker上。但是，我不是很确定这是一个错误...

基本上，当我从IDE运行项目时，一切工作正常，所有查询都能顺利执行。但是，当我使用maven-shade-plugin打包项目时，开始出现这些Cannot find a command executor for the command request:错误，但仅针对部分查询。在我的pom.xml中，我声明以下内容：

<!-- As defined: http://orientdb.com/docs/last/Graph-Database-Tinkerpop.html  -->
<dependency>
    <groupId>com.orientechnologies</groupId>
    <artifactId>orientdb-core</artifactId>
    <version>${orientdb-version}</version>
</dependency>
<dependency>
    <groupId>com.orientechnologies</groupId>
    <artifactId>orientdb-graphdb</artifactId>
    <version>${orientdb-version}</version>
</dependency>
<dependency>
    <groupId>com.tinkerpop.blueprints</groupId>
    <artifactId>blueprints-core</artifactId>
    <version>2.5.0</version>
</dependency>
<dependency>
     <groupId>net.java.dev.jna</groupId>
     <artifactId>jna-platform</artifactId>
     <version>4.0.0</version>
 </dependency>
 <dependency>
     <groupId>net.java.dev.jna</groupId>
     <artifactId>jna</artifactId>
     <version>4.2.0</version>
 </dependency>
 <dependency>
     <groupId>com.googlecode.concurrentlinkedhashmap</groupId>
     <artifactId>concurrentlinkedhashmap-lru</artifactId>
     <version>1.4.2</version>
 </dependency>
<!-- Include to enable embedded db if user selects single mode -->
<dependency>
    <groupId>com.orientechnologies</groupId>
    <artifactId>orientdb-server</artifactId>
    <version>${orientdb-version}</version>
</dependency>
<!-- Include to enable remote db if user selects distributed mode -->
<dependency>
    <groupId>com.orientechnologies</groupId>
    <artifactId>orientdb-client</artifactId>
    <version>${orientdb-version}</version>
</dependency>
...
<orientdb-version>2.1.3</orientdb-version>

我已将以下过滤器添加到shade插件中，以尝试确保没有剥离任何东西，但它似乎并未解决该问题：

<filters>
    <filter>
        <artifact>*:*</artifact>
        <includes>
             <include>**</include>
        </includes>
   </filter>
</filters>

堆栈跟踪：

Caused by: com.orientechnologies.orient.core.command.OCommandExecutorNotFoundException: Cannot find a command executor for the command request: sql.CREATE EDGE hasRole FROM (SELECT FROM Person WHERE @rid=#15:0) TO (SELECT FROM Role WHERE @rid=#16:1)
    at com.orientechnologies.orient.core.sql.OCommandExecutorSQLDelegate.parse(OCommandExecutorSQLDelegate.java:72) ~[halo-1.0.0.jar:1.0.0]
    at com.orientechnologies.orient.core.sql.OCommandExecutorSQLDelegate.parse(OCommandExecutorSQLDelegate.java:42) ~[halo-1.0.0.jar:1.0.0]
    at com.orientechnologies.orient.core.storage.impl.local.OAbstractPaginatedStorage.command(OAbstractPaginatedStorage.java:1431) ~[halo-1.0.0.jar:1.0.0]
    at com.orientechnologies.orient.core.command.OCommandRequestTextAbstract.execute(OCommandRequestTextAbstract.java:63) ~[halo-1.0.0.jar:1.0.0]
    at com.tinkerpop.blueprints.impls.orient.OrientGraphCommand.execute(OrientGraphCommand.java:49) ~[halo-1.0.0.jar:1.0.0]
    at co.ff36.halo.core.persistence.Dao.exec(Dao.java:94) ~[halo-1.0.0.jar:1.0.0]
    at co.ff36.halo.core.resource.server.UserRoleServerResource.store(UserRoleServerResource.java:63) ~[halo-1.0.0.jar:1.0.0]
    ... 57 common frames omitted

最佳答案

问题在于，默认情况下，maven-shade-plugin无法合并服务文件。 OrientDB使用Java服务通过相同的接口注入命令。我认为，如果在构建时看到一些日志，则会看到shade插件跳过了一些文件，因为它们已经存在。
我认为您可以通过添加一些合并策略来解决它

https://maven.apache.org/plugins/maven-shade-plugin/examples/resource-transformers.html#ServicesResourceTransformer

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java - OrientDB“找不到命令请求的命令执行器”错误