make decisions to resolve wildcard any fields for only multi_match

Author: Samiul-TheSoccerFan

x-pack/plugin/inference/src/main/java/org/elasticsearch/xpack/inference/queries/SemanticMultiMatchQueryRewriteInterceptor.java

@@ -103,6 +103,11 @@ public boolean shouldResolveInferenceFieldWildcards(QueryBuilder queryBuilder) {
         return multiMatchQuery.resolveInferenceFieldWildcards();
     }
 
+    @Override
+    protected boolean shouldUseDefaultFields() {
+        return true;
+    }
+
     private QueryBuilder buildMultiFieldSemanticQuery(
         MultiMatchQueryBuilder originalQuery,
         Set<String> inferenceFields,

x-pack/plugin/inference/src/main/java/org/elasticsearch/xpack/inference/queries/SemanticQueryRewriteInterceptor.java

@@ -100,6 +100,17 @@ protected Map<String, Float> getFieldsWithWeights(QueryBuilder queryBuilder) {
      */
     protected abstract boolean shouldResolveInferenceFieldWildcards(QueryBuilder queryBuilder);
 
+    /**
+     * Determines if this query type should use default fields when no fields are specified.
+     * This is typically only needed for multi_match queries.
+     * Default implementation returns false for most query types.
+     *
+     * @return true if default fields should be used when no fields are specified, false otherwise.
+     */
+    protected boolean shouldUseDefaultFields() {
+        return false;
+    }
+
     /**
      * Builds the inference query
      *
@@ -166,9 +177,9 @@ private InferenceIndexInformationForField resolveIndicesForFields(
             Map<String, InferenceFieldMetadata> indexInferenceFields = new HashMap<>();
             Map<String, InferenceFieldMetadata> indexInferenceMetadata = indexMetadata.getInferenceFields();
 
-            // Handle default fields per index when no fields are specified
+            // Handle default fields per index when no fields are specified (only for multi_match queries)
             Map<String, Float> fieldsToProcess = fieldsWithWeights;
-            if (fieldsToProcess.isEmpty()) {
+            if (fieldsToProcess.isEmpty() && shouldUseDefaultFields()) {
                 Settings settings = indexMetadata.getSettings();
                 List<String> defaultFields = settings.getAsList(DEFAULT_FIELD_SETTING.getKey(), DEFAULT_FIELD_SETTING.getDefault(settings));
                 fieldsToProcess = QueryParserHelper.parseFieldsAndWeights(defaultFields);