Merge pull request #32491 from vespa-engine/bratseth/segment-on-index

Require positive proof of an index field to segment

container-search/src/main/java/com/yahoo/prelude/query/ExactStringItem.java

@@ -6,7 +6,6 @@
  *
  * @author baldersheim
  */
-
 public class ExactStringItem extends WordItem {
 
     public ExactStringItem(String substring) {

container-search/src/main/java/com/yahoo/prelude/query/PhraseSegmentItem.java

@@ -8,7 +8,6 @@
 import java.util.Objects;
 import java.util.Optional;
 
-
 /**
  * A term which contains a fixed length phrase, a collection of word terms,
  * resulting from a single segmentation operation.

container-search/src/main/java/com/yahoo/search/yql/YqlParser.java

@@ -25,6 +25,7 @@
 import com.yahoo.language.detect.Detector;
 import com.yahoo.language.process.Normalizer;
 import com.yahoo.language.process.Segmenter;
+import com.yahoo.prelude.Index;
 import com.yahoo.prelude.IndexFacts;
 import com.yahoo.prelude.Location;
 import com.yahoo.prelude.query.AndItem;
@@ -741,7 +742,7 @@ private Item instantiatePhraseSegmentItem(String field, OperatorNode<ExpressionO
             words = segmenter.segment(origin.getValue(), currentlyParsing.getLanguage());
         }
 
-        if (words != null && words.size() > 0) {
+        if (words != null && ! words.isEmpty()) {
             for (String word : words) {
                 phrase.addItem(new WordItem(word, field, true));
             }
@@ -1515,6 +1516,7 @@ private Item instantiateWordItem(String field,
         boolean substrMatch = getAnnotation(ast, SUBSTRING, Boolean.class, Boolean.FALSE,
                                             "setting for whether to use substring match of input data");
         boolean exact = exactMatch != null ? exactMatch : indexFactsSession.getIndex(indexNameExpander.expand(field)).isExact();
+
         String grammar = getAnnotation(ast, USER_INPUT_GRAMMAR, String.class,
                                        Query.Type.WEAKAND.toString(), "grammar for handling word input");
         Preconditions.checkArgument((prefixMatch ? 1 : 0) +
@@ -1558,7 +1560,7 @@ private Item instantiateWordItem(String field,
     }
 
     private boolean shouldSegment(String field, boolean fromQuery) {
-        return fromQuery && ! indexFactsSession.getIndex(indexNameExpander.expand(field)).isAttribute();
+        return fromQuery && indexFactsSession.getIndex(indexNameExpander.expand(field)).isIndex();
     }
 
     private TaggableItem segment(String field, OperatorNode<ExpressionOperator> ast, String wordData,

container-search/src/test/java/com/yahoo/prelude/querytransform/test/CJKSearcherTestCase.java

@@ -4,8 +4,7 @@
 import com.yahoo.component.chain.Chain;
 import com.yahoo.language.Language;
 import com.yahoo.language.Linguistics;
-import com.yahoo.prelude.IndexFacts;
-import com.yahoo.prelude.IndexFactsFactory;
+import com.yahoo.prelude.*;
 import com.yahoo.prelude.query.Item;
 import com.yahoo.prelude.query.NullItem;
 import com.yahoo.prelude.query.parser.TestLinguistics;
@@ -57,8 +56,15 @@ void testCjkQueryWithOverlappingTokens() {
 
     @Test
     public void testEquivAndChinese() {
+        SearchDefinition schema = new SearchDefinition("music-only");
+        Index stringIndex = new Index("default");
+        stringIndex.setIndex(true);
+        stringIndex.setString(true);
+        schema.addIndex(stringIndex);
+        var indexFacts = new IndexFacts(new IndexModel(schema));
+
         Query query = new Query(QueryTestCase.httpEncode("search?yql=select * from music-only where default contains equiv('a', 'b c') or default contains '东'"));
-        new Execution(new Chain<>(new MinimalQueryInserter(), new CJKSearcher()), Execution.Context.createContextStub()).search(query);
+        new Execution(new Chain<>(new MinimalQueryInserter(), new CJKSearcher()), Execution.Context.createContextStub(indexFacts)).search(query);
         assertEquals("OR (EQUIV default:a default:'b c') default:东", query.getModel().getQueryTree().toString());
     }
 

container-search/src/test/java/com/yahoo/search/yql/MinimalQueryInserterTestCase.java

@@ -185,7 +185,7 @@ void testUserLanguageIsDetectedWithUserQueryEnglishAlsoWithNonEnglishStructuredQ
         Result result = execution.search(query);
         assertNull(result.hits().getError());
         assertEquals(Language.ENGLISH, query.getModel().getParsingLanguage()); // by UNKNOWN -> ENGLISH
-        assertEquals("AND attribute_key:我能吞下玻璃而不伤身体 (WEAKAND(100) executions)", query.getModel().getQueryTree().toString());
+        assertEquals("AND attribute_key:我能吞下玻璃而不伤身体。 (WEAKAND(100) executions)", query.getModel().getQueryTree().toString());
     }
 
     @Test
@@ -195,7 +195,7 @@ void testUserLanguageIsDetectedWithUserInputEnglishAlsoWithNonEnglishStructuredQ
         Result result = execution.search(query);
         assertNull(result.hits().getError());
         assertEquals(Language.ENGLISH, query.getModel().getParsingLanguage()); // by UNKNOWN -> ENGLISH
-        assertEquals("AND attribute_key:我能吞下玻璃而不伤身体 (WEAKAND(100) default:executions)", query.getModel().getQueryTree().toString());
+        assertEquals("AND attribute_key:我能吞下玻璃而不伤身体。 (WEAKAND(100) default:executions)", query.getModel().getQueryTree().toString());
     }
 
     @Test