review nullable annotation

Signed-off-by: neo <1100909+neowu@users.noreply.github.com>

Author: neowu

core-ng/src/main/java/core/framework/internal/db/InsertQuery.java

@@ -7,13 +7,15 @@
  */
 final class InsertQuery<T> {
     final String insertSQL;
+    @Nullable
     final String insertIgnoreSQL;
+    @Nullable
     final String upsertSQL;
     @Nullable
     final String generatedColumn;
     private final InsertQueryParamBuilder<T> paramBuilder;
 
-    InsertQuery(String insertSQL, String insertIgnoreSQL, String upsertSQL, @Nullable String generatedColumn, InsertQueryParamBuilder<T> paramBuilder) {
+    InsertQuery(String insertSQL, @Nullable String insertIgnoreSQL, @Nullable String upsertSQL, @Nullable String generatedColumn, InsertQueryParamBuilder<T> paramBuilder) {
         this.insertSQL = insertSQL;
         this.insertIgnoreSQL = insertIgnoreSQL;
         this.upsertSQL = upsertSQL;

core-ng/src/main/java/core/framework/internal/db/InsertQueryBuilder.java

@@ -30,7 +30,9 @@ class InsertQueryBuilder<T> {
     private String generatedColumn;     // db entity must not have more than one auto incremental primary key, validated by DatabaseClassValidator
     private List<ParamField> paramFields;
     private String insertSQL;
+    @Nullable
     private String insertIgnoreSQL;
+    @Nullable
     private String upsertSQL;
 
     InsertQueryBuilder(Class<T> entityClass, Dialect dialect) {