Change handling of populating document from multivalue attribute with

zero values for the document.

Old behavior:
The field was set to an empty array/set if it was present in the document.

New behavior:
The field is removed from the document.

1 files changed, 4 insertions, 2 deletions

diff --git a/searchcore/src/vespa/searchcore/proton/attribute/document_field_retriever.cpp b/searchcore/src/vespa/searchcore/proton/attribute/document_field_retriever.cpp
index 243d36bdead..d05fc98f152 100644
--- a/searchcore/src/vespa/searchcore/proton/attribute/document_field_retriever.cpp
+++ b/searchcore/src/vespa/searchcore/proton/attribute/document_field_retriever.cpp
@@ -55,7 +55,8 @@ setValue(DocumentIdT lid,
         AttributeContent<T> content;
         content.fill(attr, lid);
         Field f = doc.getField(fieldName);
-        if (!doc.getValue(f) && content.size() == 0) {
+        if (content.size() == 0) {
+            doc.remove(f);
             break;
         }
         FieldValue::UP fv = f.getDataType().createFieldValue();
@@ -75,7 +76,8 @@ setValue(DocumentIdT lid,
         AttributeContent<WeightedType<T> > content;
         content.fill(attr, lid);
         Field f = doc.getField(fieldName);
-        if (!doc.getValue(f) && content.size() == 0) {
+        if (content.size() == 0) {
+            doc.remove(f);
             break;
         }
         FieldValue::UP fv = f.getDataType().createFieldValue();