[zeppelin] branch master updated: [ZEPPELIN-4568] Fix can not update output when the data is empty

[moon]

This is an automated email from the ASF dual-hosted git repository.

moon pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/zeppelin.git


The following commit(s) were added to refs/heads/master by this push:
     new b0e220e  [ZEPPELIN-4568] Fix can not update output when the data is 
empty
b0e220e is described below

commit b0e220e6dbbf1a54cbce98f290d593b49e97bc23
Author: Hsuan Lee <hsua...@gmail.com>
AuthorDate: Mon Feb 10 17:01:24 2020 +0800

    [ZEPPELIN-4568] Fix can not update output when the data is empty
    
    ### What is this PR for?
    
    Fix can not update output when the data is empty
    
    ### What type of PR is it?
    [Bug Fix]
    
    ### What is the Jira issue?
    
    https://issues.apache.org/jira/browse/ZEPPELIN-4568
    
    ### How should this be tested?
    
    Try the following code:
    
    ```pythone
    import sys
    import time
    from IPython.display import display, clear_output
    for i in range(10):
        time.sleep(0.25)
        clear_output(wait=True)
        print(i)
        sys.stdout.flush()
    ```
    
    Should be updated instead of append the output
    
    ### Screenshots (if appropriate)
    
    ![Kapture 2020-02-10 at 17 07 
46](https://user-images.githubusercontent.com/22736418/74135832-f4a34e00-4c27-11ea-9af8-9ab1f8da218d.gif)
    
    ### Questions:
    * Does the licenses files need update? No
    * Is there breaking changes for older versions? No
    * Does this needs documentation? No
    
    Author: Hsuan Lee <hsua...@gmail.com>
    
    Closes #3635 from hsuanxyz/fix/clean-out and squashes the following commits:
    
    df9c6f8ac [Hsuan Lee] fix: can not update output when the data is empty
---
 zeppelin-web/src/app/notebook/paragraph/paragraph.controller.js    | 2 +-
 .../src/app/notebook/paragraph/result/result.controller.js         | 7 ++++++-
 zeppelin-web/src/app/spell/spell-result.js                         | 2 +-
 3 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/zeppelin-web/src/app/notebook/paragraph/paragraph.controller.js 
b/zeppelin-web/src/app/notebook/paragraph/paragraph.controller.js
index f0e5d7f..a303b0f 100644
--- a/zeppelin-web/src/app/notebook/paragraph/paragraph.controller.js
+++ b/zeppelin-web/src/app/notebook/paragraph/paragraph.controller.js
@@ -212,7 +212,7 @@ function ParagraphCtrl($scope, $rootScope, $route, $window, 
$routeParams, $locat
         $scope.paragraph.results.msg = [];
       }
 
-      let update = ($scope.paragraph.results.msg[data.index]) ? true : false;
+      let update = typeof $scope.paragraph.results.msg[data.index] !== 
'undefined';
 
       $scope.paragraph.results.msg[data.index] = {
         data: data.data,
diff --git 
a/zeppelin-web/src/app/notebook/paragraph/result/result.controller.js 
b/zeppelin-web/src/app/notebook/paragraph/result/result.controller.js
index dc0fdbf..dc6b0bb 100644
--- a/zeppelin-web/src/app/notebook/paragraph/result/result.controller.js
+++ b/zeppelin-web/src/app/notebook/paragraph/result/result.controller.js
@@ -216,7 +216,12 @@ function ResultCtrl($scope, $rootScope, $route, $window, 
$routeParams, $location
       callback(elem);
     }
 
-    $timeout(retry);
+    if(isDOMLoaded(targetElemId)) {
+      const elem = angular.element(`#${targetElemId}`);
+      callback(elem);
+    } else {
+      $timeout(retry);
+    }
   }
 
   $scope.$on('updateResult', function(event, result, newConfig, paragraphRef, 
index) {
diff --git a/zeppelin-web/src/app/spell/spell-result.js 
b/zeppelin-web/src/app/spell/spell-result.js
index 52bcdc1..93d71ed 100644
--- a/zeppelin-web/src/app/spell/spell-result.js
+++ b/zeppelin-web/src/app/spell/spell-result.js
@@ -217,7 +217,7 @@ export class SpellResult {
   }
 
   static isObject(data) {
-    return (data &&
+    return (typeof data !== 'undefined' &&
       !SpellResult.isFunction(data) &&
       !SpellResult.isPromise(data));
   }