XWIKI-14136: Dedicate a different page for each version of the extension in the Repository

  * Provide a script service for getting the extension version xobject
  * Fix the download button in ExtensionSheet

Author: surli

xwiki-platform-core/xwiki-platform-repository/xwiki-platform-repository-server-api/src/main/java/org/xwiki/repository/script/RepositoryScriptService.java

@@ -23,6 +23,7 @@
 
 import javax.inject.Inject;
 import javax.inject.Named;
+import javax.inject.Provider;
 import javax.inject.Singleton;
 
 import org.xwiki.component.annotation.Component;
@@ -33,10 +34,16 @@
 import org.xwiki.extension.repository.ExtensionRepositoryManager;
 import org.xwiki.extension.version.Version;
 import org.xwiki.model.reference.DocumentReference;
+import org.xwiki.query.QueryException;
 import org.xwiki.repository.internal.ExtensionStore;
 import org.xwiki.repository.internal.RepositoryManager;
 import org.xwiki.script.service.ScriptService;
 
+import com.xpn.xwiki.XWikiContext;
+import com.xpn.xwiki.XWikiException;
+import com.xpn.xwiki.api.Object;
+import com.xpn.xwiki.doc.XWikiDocument;
+
 @Component
 @Named("repository")
 @Singleton
@@ -62,6 +69,9 @@ public class RepositoryScriptService implements ScriptService
     @Inject
     private Execution execution;
 
+    @Inject
+    private Provider<XWikiContext> contextProvider;
+
     /**
      * Store a caught exception in the context, so that it can be later retrieved using {@link #getLastError()}.
      * 
@@ -122,4 +132,15 @@ public ExtensionSupportPlans resolveExtensionSupportPlans(Collection<String> sup
     {
         return this.extensionStore.resolveExtensionSupportPlans(supportPlanIds);
     }
+
+    public Object getVersionObject(String extensionId, String version) throws QueryException, XWikiException
+    {
+        XWikiDocument extensionDoc = this.extensionStore.getExistingExtensionDocumentById(extensionId);
+        XWikiContext context = contextProvider.get();
+        // FIXME: add some checks
+        XWikiDocument extensionVersionDocument =
+            this.extensionStore.getExtensionVersionDocument(extensionDoc, version, context);
+        return new Object(this.extensionStore.getExtensionVersionObject(extensionVersionDocument, version),
+            context);
+    }
 }

xwiki-platform-core/xwiki-platform-repository/xwiki-platform-repository-server-ui/src/main/resources/ExtensionCode/ExtensionSheet.xml

@@ -176,7 +176,7 @@
         ##------- Download button ------
         #set($lastVersion = $doc.getValue("lastVersion"))
         #if ("$!lastVersion" != '')
-          #set ($lastVersionObject = $doc.getObject("ExtensionCode.ExtensionVersionClass", 'version', $lastVersion))
+          #set ($lastVersionObject = $services.repository.getVersionObject($extension.getProperty('id').value, $lastVersion))
           #set ($version = $lastVersionObject.getProperty('version').value)
           #set ($download = $lastVersionObject.getProperty("download").value)
           #if ("$!download" == '')