为什么eclipse找不到我的功能？

Question

我已经编写了一些eclipse插件，并将它们合并到特性中。如果这些功能确实只包含插件，那么一切都没问题。但是，如果我将一个功能包含到一个功能中，那么我会得到以下错误：

Unable to find feature "<featureName>" with version in range [2.6.0,2.6.1).

其中，featuerName是包含的特性。我修改了包含的功能的版本号，但没有成功。

这就是包含feature.xml

    <?xml version="1.0" encoding="UTF-8"?>
<feature
      id="de.mdsd.xtext.support.validator.model.sdk"
      label="Xtext Support Validator Generator Feature"
      version="2.6.0.qualifier"
      provider-name="XXX Software">

   <description>
      This plugin provides a small DSL for describing and generating an Xtext validator class.
   </description>

   <includes
         id="de.mdsd.xtext.support.sdk.sdk"
         version="[2.6.1,3.0.0)"/>

   <requires>
      <import plugin="org.eclipse.xtext"/>
      <import plugin="org.eclipse.equinox.common" version="3.5.0" match="greaterOrEqual"/>
      <import plugin="org.eclipse.emf.codegen.ecore" version="2.10.2" match="greaterOrEqual"/>
      <import plugin="de.mdsd.xtext.swtch.model" version="2.0.0" match="greaterOrEqual"/>
      <import plugin="org.eclipse.xtext.util"/>
      <import plugin="org.eclipse.emf.ecore"/>
      <import plugin="org.eclipse.emf.common"/>
      <import plugin="org.eclipse.xtext.xbase.lib"/>
      <import plugin="org.antlr.runtime"/>
      <import plugin="org.eclipse.xtext.common.types"/>
      <import plugin="org.apache.log4j"/>
      <import plugin="org.eclipse.xtext.ui"/>
      <import plugin="org.eclipse.ui.editors" version="3.5.0" match="greaterOrEqual"/>
      <import plugin="org.eclipse.ui.ide" version="3.5.0" match="greaterOrEqual"/>
      <import plugin="org.eclipse.xtext.ui.shared"/>
      <import plugin="org.eclipse.ui"/>
      <import plugin="org.eclipse.xtext.builder"/>
      <import plugin="org.eclipse.xtext.common.types.ui"/>
      <import plugin="org.eclipse.xtext.ui.codetemplates.ui"/>
      <import plugin="org.eclipse.compare"/>
      <import plugin="de.mdsd.xtext.support.sdk" version="2.1.0" match="greaterOrEqual"/>
      <import plugin="de.mdsd.xtext.up.name.providerswitch.model" version="1.4.0" match="greaterOrEqual"/>
   </requires>

   <plugin
         id="de.mdsd.xtext.support.validator.model"
         download-size="0"
         install-size="0"
         version="0.0.0"
         unpack="false"/>

   <plugin
         id="de.mdsd.xtext.support.validator.model.ui"
         download-size="0"
         install-size="0"
         version="0.0.0"
         unpack="false"/>

</feature>

下面是包含的feature.xml

<?xml version="1.0" encoding="UTF-8"?>
<feature
      id="de.mdsd.xtext.support.sdk.sdk"
      label="Xtext Support Feature"
      version="2.6.1.qualifier"
      provider-name="MDSD Software">

   <description url="http://www.example.com/description">
      This is a collection of classes that support the development
of Xtext generated tools.

Now it contains switches and name providers for GenModel-, Ecore models and Xtext grammars.
   </description>

   <copyright url="http://www.example.com/copyright">
      Copyright Olaf Bigalk 2013
   </copyright>

   <license url="http://www.example.com/license">
      EPL
   </license>

   <requires>
      <import plugin="org.eclipse.emf.ecore" version="2.9.0" match="greaterOrEqual"/>
      <import plugin="org.eclipse.xtext" version="2.4.2" match="greaterOrEqual"/>
      <import plugin="org.eclipse.xtend.lib"/>
      <import plugin="com.google.guava"/>
      <import plugin="org.eclipse.xtext.xbase.lib"/>
      <import plugin="org.eclipse.emf.codegen.ecore"/>
      <import plugin="org.eclipse.xtext.ui" version="2.4.3" match="greaterOrEqual"/>
      <import plugin="org.eclipse.jdt.core" version="3.9.0" match="greaterOrEqual"/>
      <import plugin="org.eclipse.xtend.typesystem.emf" version="1.4.0" match="greaterOrEqual"/>
      <import plugin="org.eclipse.xtext.xbase" version="2.8.3" match="greaterOrEqual"/>
      <import plugin="org.eclipse.emf" version="2.6.0" match="greaterOrEqual"/>
   </requires>

   <plugin
         id="de.mdsd.xtext.support.sdk"
         download-size="0"
         install-size="0"
         version=""
         unpack="false"/>

   <plugin
         id="de.mdsd.xtext.support.xtend.utils"
         download-size="0"
         install-size="0"
         version=""
         unpack="false"/>

   <plugin
         id="de.mdsd.xtext.support.xbase.utils"
         download-size="0"
         install-size="0"
         version=""
         unpack="false"/>

   <plugin
         id="de.mdsd.xtext.support.utils"
         download-size="0"
         install-size="0"
         version=""
         unpack="false"/>

</feature>

这个错误的原因是什么？

Answer 1

不能在feature.xml的includes元素中使用像[2.6.1,3.0.0)这样的版本范围。

指定要包含的功能的确切版本(2.6.1.qualifier)或指定0.0.0以不检查版本。