[Developer] #573 normalize vector access whitelist

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

@@ -268,15 +268,20 @@ public class OrdsProbeService {
   }
 
   static String vectorEffectiveSql(ProtectedObject object, String predicate) {
+    String vpdFilter = isAllowAllPredicate(predicate) ? "" : " AND (" + 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 + ")"
+        + " WHERE d.embedding IS NOT NULL" + vpdFilter
         + " ORDER BY score) ranked_chunks"
         + " WHERE ROWNUM <= LEAST(GREATEST(NVL(:row_limit, 10), 1), 100)";
   }
 
+  private static boolean isAllowAllPredicate(String predicate) {
+    return predicate != null && predicate.trim().replaceAll("\\s+", " ").equals("1 = 1");
+  }
+
   private String findVpdPredicate(String bearerToken, ProtectedObject object) {
     try {
       return jdbcTemplate.execute((ConnectionCallback<String>) connection -> {