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Original file line number Diff line number Diff line change
Expand Up @@ -18,9 +18,7 @@
import org.elasticsearch.search.retriever.RetrieverBuilder;
import org.elasticsearch.search.retriever.RetrieverBuilderWrapper;
import org.elasticsearch.search.retriever.RetrieverParserContext;
import org.elasticsearch.search.sort.FieldSortBuilder;
import org.elasticsearch.search.sort.ScoreSortBuilder;
import org.elasticsearch.search.sort.ShardDocSortField;
import org.elasticsearch.search.sort.SortBuilder;
import org.elasticsearch.xcontent.ConstructingObjectParser;
import org.elasticsearch.xcontent.ParseField;
Expand Down Expand Up @@ -106,16 +104,9 @@ private void validateSort(SearchSourceBuilder source) {
if (sorts == null || sorts.isEmpty()) {
return;
}
for (SortBuilder<?> sort : sorts) {
if (sort instanceof ScoreSortBuilder) {
continue;
}
if (sort instanceof FieldSortBuilder) {
FieldSortBuilder fieldSort = (FieldSortBuilder) sort;
if (ShardDocSortField.NAME.equals(fieldSort.getFieldName())) {
continue;
}
}

SortBuilder<?> sort = sorts.get(0);
if (sort instanceof ScoreSortBuilder == false) {
throw new IllegalArgumentException(
"[" + NAME + "] retriever only supports sorting by score, invalid sort criterion: " + sort.toString()
);
Expand Down
Original file line number Diff line number Diff line change
Expand Up @@ -209,7 +209,16 @@ public void testValidateSort() {
multipleSortsSource.query(dummyQuery);
multipleSortsSource.sort("_score");
multipleSortsSource.sort("field1");
e = expectThrows(IllegalArgumentException.class, () -> builder.finalizeSourceBuilder(multipleSortsSource));
builder.finalizeSourceBuilder(multipleSortsSource);
assertThat(multipleSortsSource.sorts().size(), equalTo(2));
assertThat(multipleSortsSource.sorts().get(0).toString(), equalTo("{\n \"_score\" : {\n \"order\" : \"desc\"\n }\n}"));
assertThat(multipleSortsSource.sorts().get(1).toString(), equalTo("{\n \"field1\" : {\n \"order\" : \"asc\"\n }\n}"));

SearchSourceBuilder fieldFirstSource = new SearchSourceBuilder();
fieldFirstSource.query(dummyQuery);
fieldFirstSource.sort("field1");
fieldFirstSource.sort("_score");
e = expectThrows(IllegalArgumentException.class, () -> builder.finalizeSourceBuilder(fieldFirstSource));
assertThat(
e.getMessage(),
equalTo(
Expand Down