使用 OpenCMIS 获取 Alfresco 扩展属性

发布于 2024-09-05 12:18:05 字数 1756 浏览 9 评论 0原文

我正在编写一个基于 OpenCMIS 的应用程序，它从 Alfresco 3.3 中提取一些数据。

它可以与标准 CMIS 属性配合使用，例如cmis:name 或cmis:contentStreamMimeType；但是，我无法访问 Alfresco 特定属性，这些属性作为“Alfresco 扩展”出现在 CMIS AtomPub 提要上：

<cmisra:object>
  <cmis:properties>
    <cmis:propertyString propertyDefinitionId="cmis:name" displayName="Name" queryName="cmis:name">
      <cmis:value>test document</cmis:value>
    </cmis:propertyString>
    <cmis:propertyString propertyDefinitionId="cmis:contentStreamMimeType" displayName="Content Stream MIME Type" queryName="cmis:contentStreamMimeType">
      <cmis:value>text/html</cmis:value>
    </cmis:propertyString>
    ...
    <alf:aspects>
      ...
      <alf:properties>
        <cmis:propertyString propertyDefinitionId="cm:description" displayName="Description" queryName="cm:description">
          <cmis:value>This is just a test document</cmis:value>
        </cmis:propertyString>
      </alf:properties>
    </alf:aspects>
  </cmis:properties>
</cmisra:object>

有没有什么方法可以使用 OpenCMIS 获取 cm:descripcion 的值？

我的猜测是，我需要使用 DocumentType 接口而不是 Document，然后调用其 getExtensions() 方法。但我不知道如何获取 DocumentType 的实例。

任何帮助将不胜感激。

问候

编辑：虽然 Florian 的答案已经为我解决了，但我刚刚意识到我也可以使用 CMIS SQL 获取这些属性的值：

select d.*, t.*, a.*
from   cmis:document d
join   cm:titled t on d.cmis:objectid = t.cmis:objectid
join   cm:author a on d.cmis:objectid = a.cmis:objectid
where  t.cm:description like ...

原文

I'm writing an OpenCMIS based application, which extracts some data from Alfresco 3.3.

It works fine with standard CMIS properties such as cmis:name or cmis:contentStreamMimeType; however, I can't access Alfresco especific properties, which are present on the CMIS AtomPub feed as "Alfresco extensions":

<cmisra:object>
  <cmis:properties>
    <cmis:propertyString propertyDefinitionId="cmis:name" displayName="Name" queryName="cmis:name">
      <cmis:value>test document</cmis:value>
    </cmis:propertyString>
    <cmis:propertyString propertyDefinitionId="cmis:contentStreamMimeType" displayName="Content Stream MIME Type" queryName="cmis:contentStreamMimeType">
      <cmis:value>text/html</cmis:value>
    </cmis:propertyString>
    ...
    <alf:aspects>
      ...
      <alf:properties>
        <cmis:propertyString propertyDefinitionId="cm:description" displayName="Description" queryName="cm:description">
          <cmis:value>This is just a test document</cmis:value>
        </cmis:propertyString>
      </alf:properties>
    </alf:aspects>
  </cmis:properties>
</cmisra:object>

Is there any way in which I can get the value of cm:descripcion, with OpenCMIS?

My guess is that I need to use the DocumentType interface instead of Document, and then call its getExtensions() method. But I don't know how to get an instance of DocumentType.

Any help would be really appreciated.

Regards

Edit: altough Florian's answer already worked out for me, I've just realized that I can get these properties' values with CMIS SQL, too:

select d.*, t.*, a.*
from   cmis:document d
join   cm:titled t on d.cmis:objectid = t.cmis:objectid
join   cm:author a on d.cmis:objectid = a.cmis:objectid
where  t.cm:description like ...

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心的憧憬 2024-09-12 12:18:08

恐怕 OpenCMIS 高级 API 还无法访问所有扩展。它在我们的待办事项清单上。目前，您必须使用低级 API。
像这样的东西应该有效：

ObjectData doc = session.getBinding().getObjectService().getObject(...);
org.w3c.dom.Node domNode = (org.w3c.dom.Node) doc.getProperties().getExtensions().get(0); // <alf:aspects>
domNode.getFirstChild() ...

I'm afraid the OpenCMIS high-level API cannot access all extensions yet. It's on our to-do list. For now, you have to use the low-level API.
Something like this should work:

ObjectData doc = session.getBinding().getObjectService().getObject(...);
org.w3c.dom.Node domNode = (org.w3c.dom.Node) doc.getProperties().getExtensions().get(0); // <alf:aspects>
domNode.getFirstChild() ...

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