Github user brightchen commented on a diff in the pull request:
https://github.com/apache/incubator-apex-malhar/pull/100#discussion_r45023991
--- Diff:
library/src/test/java/com/datatorrent/lib/appdata/snapshot/AppDataSnapshotServerTagsSupportTest.java
---
@@ -0,0 +1,67 @@
+package com.datatorrent.lib.appdata.snapshot;
+
+import org.codehaus.jettison.json.JSONArray;
+import org.codehaus.jettison.json.JSONObject;
+import org.junit.Assert;
+import org.junit.Test;
+
+import com.google.common.collect.Sets;
+
+import com.datatorrent.lib.appdata.gpo.GPOMutable;
+import com.datatorrent.lib.appdata.schemas.Schema;
+import com.datatorrent.lib.appdata.schemas.SchemaResult;
+import com.datatorrent.lib.appdata.schemas.SchemaUtils;
+
+public class AppDataSnapshotServerTagsSupportTest
+{
+ public static class AppDataSnapshotServerSchemaExport extends
AbstractAppDataSnapshotServer<Object>
+ {
+ SchemaResult schemaResult;
+ String schemaResultJSON;
+
+ @Override
+ public GPOMutable convert(Object inputEvent)
+ {
+ return null;
+ }
+
+ @Override
+ public void endWindow()
+ {
+ while ((schemaResult = schemaQueue.poll()) != null) {
+ schemaResultJSON = resultSerializerFactory.serialize(schemaResult);
+ queryResult.emit(schemaResultJSON);
+ }
+
+ queryProcessor.endWindow();
+ }
+ }
+
+ private static final String schemaLocation =
"satisfactionRatingSnapshotSchema_test.json";
+ private static final String TAG = "bulletin";
+
+ @Test
+ public void testSchema() throws Exception
--- End diff --
The Preconditions.checkState() in the initialize() method forbid keys in
the first level. I am not sure why this precondition was checked, but maybe
have some trap here if break this logic.
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