nbruno commented on a change in pull request #9151:
URL: https://github.com/apache/arrow/pull/9151#discussion_r582505891
##########
File path: java/vector/src/main/codegen/templates/UnionVector.java
##########
@@ -647,6 +673,8 @@ public ValueVector getVectorByType(int typeId, ArrowType
arrowType) {
return getStruct();
case LIST:
return getList();
+ case MAP:
+ return getMap();
Review comment:
I believe this should've been `getMap(name, arrowType)`. I updated the
PR with a unit test for `UnionVector`.
##########
File path: java/vector/src/test/java/org/apache/arrow/vector/TestMapVector.java
##########
@@ -624,6 +625,423 @@ public void testMapWithListValue() throws Exception {
}
}
+ @Test
+ public void testMapWithMapValue() throws Exception {
+ try (MapVector mapVector = MapVector.empty("sourceVector", allocator,
false)) {
+
+ UnionMapWriter mapWriter = mapVector.getWriter();
+ MapWriter valueWriter;
+
+ // we are essentially writing Map<Long, Map<Long, Long>>
+
+ mapWriter.setPosition(0);
+ mapWriter.startMap();
+
+ mapWriter.startEntry();
Review comment:
Done
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