Beispiel #1
0
 public static boolean setKeyValueIfneed(Object entity, PrimaryKey key, Object keyObj, long rowID)
     throws IllegalArgumentException, IllegalAccessException {
   if (key != null
       && key.isAssignedBySystem()
       && (keyObj == null || ((Number) keyObj).longValue() < 1)) {
     FieldUtil.set(key.field, entity, rowID);
     return true;
   }
   return false;
 }
 private <E, T> boolean keepMapping(Collection<E> col1, Collection<T> col2)
     throws IllegalAccessException, InstantiationException {
   Class claxx1 = col1.iterator().next().getClass();
   Class claxx2 = col2.iterator().next().getClass();
   EntityTable table1 = TableManager.getTable(claxx1);
   EntityTable table2 = TableManager.getTable(claxx2);
   if (table1.mappingList != null) {
     for (MapProperty mp : table1.mappingList) {
       Class itemClass;
       Class fieldClass = mp.field.getType();
       if (mp.isToMany()) {
         // N对多关系
         if (ClassUtil.isCollection(fieldClass)) {
           itemClass = FieldUtil.getGenericType(mp.field);
         } else {
           throw new RuntimeException(
               "OneToMany and ManyToMany Relation, You must use collection object");
         }
       } else {
         itemClass = fieldClass;
       }
       if (itemClass == claxx2) {
         ArrayList<String> key1List = new ArrayList<String>();
         HashMap<String, Object> map1 = new HashMap<String, Object>();
         // 构建第1个对象的key集合以及value映射
         for (Object o1 : col1) {
           if (o1 != null) {
             Object key1 = FieldUtil.get(table1.key.field, o1);
             if (key1 != null) {
               key1List.add(key1.toString());
               map1.put(key1.toString(), o1);
             }
           }
         }
         ArrayList<Relation> mapList = queryRelation(claxx1, claxx2, key1List, null);
         if (!Checker.isEmpty(mapList)) {
           HashMap<String, Object> map2 = new HashMap<String, Object>();
           // 构建第2个对象的value映射
           for (Object o2 : col2) {
             if (o2 != null) {
               Object key2 = FieldUtil.get(table2.key.field, o2);
               if (key2 != null) {
                 map2.put(key2.toString(), o2);
               }
             }
           }
           for (Relation m : mapList) {
             Object obj1 = map1.get(m.key1);
             Object obj2 = map2.get(m.key2);
             if (obj1 != null && obj2 != null) {
               if (mp.isToMany()) {
                 // N对多关系
                 if (ClassUtil.isCollection(fieldClass)) {
                   Collection col = (Collection) FieldUtil.get(mp.field, obj1);
                   if (col == null) {
                     col = (Collection) fieldClass.newInstance();
                     FieldUtil.set(mp.field, obj1, col);
                   }
                   col.add(obj2);
                 } else {
                   throw new RuntimeException(
                       "OneToMany and ManyToMany Relation, You must use collection object");
                 }
               } else {
                 FieldUtil.set(mp.field, obj1, obj2);
               }
             }
           }
           return true;
         }
       }
     }
   }
   return false;
 }