more fixes where value is empty

Author: broken1arrow

Database/src/main/java/org/broken/arrow/library/database/construct/query/builder/InsertHandler.java

@@ -181,15 +181,12 @@ private String setSelect(final StringBuilder sql, final List<String> columnNames
         final String selectSql = selectBuilder.build();
 
         if (!selectSql.isEmpty() && from != null) {
-
-
             sql.append("(")
                     .append(StringUtil.stringJoin(columnNames))
                     .append(") SELECT ")
                     .append(selectSql)
                     .append(" FROM ")
                     .append(from);
-
             return sql.toString();
         }
         return null;

Database/src/main/java/org/broken/arrow/library/database/utility/BatchExecutor.java

@@ -119,7 +119,7 @@ public void saveAll(@Nonnull final String tableName, final boolean shallUpdate,
 
             for (Column primary : table.getPrimaryColumns()) {
                 Object value = primaryValue;
-                if (value == null)
+                if (value == null || value.toString().isEmpty())
                     value = primaryWrapper.getPrimaryValue(primary.getColumnName());
                 columnValueMap.put(primary, value);
             }