Incremental save of annotation.

cvat/apps/dashboard/static/dashboard/js/dashboard.js

@@ -542,11 +542,15 @@ function uploadAnnotationRequest() {
                         return;
                     }
 
+                    const exportData = createExportContainer();
+                    exportData.create = parsed;
+                    exportData.pre_erase = true;
+
                     let asyncSave = function() {
                         $.ajax({
                             url: '/save/annotation/task/' + window.cvat.dashboard.taskID,
                             type: 'POST',
-                            data: JSON.stringify(parsed),
+                            data: JSON.stringify(exportData),
                             contentType: 'application/json',
                             success: function() {
                                 let message = 'Annotation successfully uploaded';

cvat/apps/engine/migrations/0010_auto_20181009_0938.py

@@ -0,0 +1,38 @@
+# Generated by Django 2.0.3 on 2018-10-09 06:38
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('engine', '0009_auto_20180917_1424'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='labeledbox',
+            name='client_id',
+            field=models.IntegerField(default=-1),
+        ),
+        migrations.AddField(
+            model_name='labeledpoints',
+            name='client_id',
+            field=models.IntegerField(default=-1),
+        ),
+        migrations.AddField(
+            model_name='labeledpolygon',
+            name='client_id',
+            field=models.IntegerField(default=-1),
+        ),
+        migrations.AddField(
+            model_name='labeledpolyline',
+            name='client_id',
+            field=models.IntegerField(default=-1),
+        ),
+        migrations.AddField(
+            model_name='objectpath',
+            name='client_id',
+            field=models.IntegerField(default=-1),
+        ),
+    ]

cvat/apps/engine/models.py

@@ -139,6 +139,7 @@ class Annotation(models.Model):
     label = models.ForeignKey(Label, on_delete=models.CASCADE)
     frame = models.PositiveIntegerField()
     group_id = models.PositiveIntegerField(default=0)
+    client_id = models.IntegerField(default=-1)
     class Meta:
         abstract = True