[Developer] #570 show vector VPD effective SQL trace

src/main/java/com/cloudhandson/vpdbackoffice/service/OrdsProbeService.java

@@ -142,7 +142,9 @@ public class OrdsProbeService {
           prettyHeaders(response.getHeaders()),
           prettyJson(response.getBody())
       );
-      if (!result.hasSqlTrace() && !isVectorSearchObject(object)) {
+      if (isVectorSearchObject(object)) {
+        result = addVectorSqlTrace(result, command.bearerToken(), object);
+      } else if (!result.hasSqlTrace()) {
         result = addLocalSqlTrace(result, command.bearerToken(), object);
       }
       return auditAndReturn(command, result);
@@ -257,6 +259,24 @@ public class OrdsProbeService {
     return result.withSqlTrace(predicate, effectiveSql);
   }
 
+  private ProbeResult addVectorSqlTrace(ProbeResult result, String bearerToken, ProtectedObject object) {
+    String predicate = findVpdPredicate(bearerToken, object);
+    if (predicate == null || predicate.isBlank()) {
+      return result;
+    }
+    return result.withSqlTrace(predicate, vectorEffectiveSql(object, predicate));
+  }
+
+  static String vectorEffectiveSql(ProtectedObject object, String predicate) {
+    return "SELECT chunk_id, document_id, chunk_no, title, chunk_text, source_uri, tech_tag, score"
+        + " FROM (SELECT d.chunk_id, d.document_id, d.chunk_no, d.title, d.chunk_text,"
+        + " d.source_uri, d.tech_tag, VECTOR_DISTANCE(d.embedding, TO_VECTOR(:embedding), COSINE) AS score"
+        + " FROM " + object.owner() + "." + object.objectName() + " d"
+        + " WHERE d.embedding IS NOT NULL AND (" + predicate + ")"
+        + " ORDER BY score) ranked_chunks"
+        + " WHERE ROWNUM <= LEAST(GREATEST(NVL(:row_limit, 10), 1), 100)";
+  }
+
   private String findVpdPredicate(String bearerToken, ProtectedObject object) {
     try {
       return jdbcTemplate.execute((ConnectionCallback<String>) connection -> {