Merge pull request #68 from meteor-space/feature/improve-projection-r…

…ebuilder

Do not throw errors if there is no data to insert after rebuilding projected collection

CHANGELOG.md

@@ -1,6 +1,10 @@
 Changelog
 =========
 
+## newVersion
+### Changes to projection rebuilder
+- `Space.eventSourcing.ProjectionRebuilder ` is no longer throwing an error if there is no data to insert into collection after rebuilding is done. Info message is now logged instead. 
+
 ## 3.0.0
 
 ### New Features

source/server/infrastructure/projection-rebuilder.coffee

@@ -4,8 +4,10 @@ class Space.eventSourcing.ProjectionRebuilder extends Space.Object
 
   dependencies: {
     commitStore: 'Space.eventSourcing.CommitStore'
+    configuration: 'configuration'
     injector: 'Injector'
     mongo: 'Mongo'
+    log: 'log'
   }
 
   rebuild: (projections, options) ->
@@ -42,7 +44,7 @@ class Space.eventSourcing.ProjectionRebuilder extends Space.Object
       if inMemoryData.length
         realCollection.batchInsert inMemoryData
       else
-        throw new Error "No data to insert after replaying events for #{collectionId}"
+        @log.info(@_logMsg("No data to insert after replaying events for #{collectionId}"))
       # Restore original collections
       @injector.override(collectionId).to realCollection
 
@@ -54,3 +56,6 @@ class Space.eventSourcing.ProjectionRebuilder extends Space.Object
     for property, id of projection.collections
       collectionIds.push(id) if projection[property]
     return collectionIds
+
+  _logMsg: (message) ->
+    "#{@configuration.appId}: #{this}: #{message}"