Include an external update site in my update site in Eclipse

问题

I have an update site in which I'm including my features, like this:

<?xml version="1.0" encoding="UTF-8"?>
<site>
   <feature url="features/my_feature1_1.0.0.qualifier.jar" id="my_feature1" version="1.0.0.qualifier">
      <category name="My Category"/>
   </feature>
   <feature url="features/my_feature2_1.0.0.qualifier.jar" id="my_feature2" version="1.0.0.qualifier">
      <category name="My Category"/>
   </feature>
   ...
</site>

Some of the plugins included by those features have dependencies on plugins that I download from other updates sites, right now I have to manually install those update sites before installing mine, to automate this, I can download and include those dependencies to my site.xml but at the end the .zip will contain them and the size will be too big, is there a way to link an external update site to mine so it is automatically downloaded during the installation of my update site?

回答1:

It seems that there is a associateSitesURL tag that provides this behavior for site.xml. That being said, it looks like site.xml has been replaced in favor of category.xml (see for instance this answer on SO) and I don't know whether this tag is still supported.

Vogella has a section about how to create one. Using a category.xml file, you can specify an additional update site by adding a repository-reference tag. For instance, add the following code to the category.xml file to reference an Orbit update site:

<repository-reference location="https://download.eclipse.org/tools/orbit/downloads/drops/R20170818183741/repository" enabled="true" />

The URL can also be specified directly from the category.xml file editor:

I failed to find any documentation on this but I used it in a side project and it seemed to work as expected.

来源：https://stackoverflow.com/questions/57398070/include-an-external-update-site-in-my-update-site-in-eclipse