Ujorm 1.22 發(fā)布，改進(jìn)內(nèi)容：

• The UjoProperty interface extends the CriterionMaker now for a simpler Criterion building.
• A new annotation parameter called converter can be assigned for a special reading data from/to ResultSet.
  
• A new method UjoComparator.sort() is implemented, as well as a better type safe using Java generics.
  
• Solid database names of foreign columns name constraints are implemented.
  
• The right parameter of Criterion can be an indirect property.
  
• The default implementation toString() of the AbstractUjo object is improved

[代碼] 保存數(shù)據(jù)

OrmHandler.getInstance().loadDatabase(Database.class);  
 
Order order = new Order();  
order.setDate(new Date());  
order.setDescr("John's order");  
 
Item item1 = new Item();  
item1.setOrder(order);  
item1.setDescr("Yellow table");  
 
Item item2 = new Item();  
item2.setOrder(order);  
item2.setDescr("Green window");  
 
Session session = OrmHandler.getInstance()  
                  .createSession();  
session.save(order);  
session.save(item1);  
session.save(item2);  
 
session.commit();  
session.close(); 

[代碼] 查詢數(shù)據(jù)

Criterion<Item> cn1, cn2, criterion;  
 
cn1 = Criterion.where( Item.ID, Operator.GE, 1L );  
cn2 = Criterion.where( Item.ORDER.add(Order.DESCR)  
                     , "John's order" ); // Equals to  
criterion = cn1.and(cn2);  
 
Session session = OrmHandler.getInstance()  
                  .createSession();  
Query<Item> items = session.createQuery(criterion)  
         .orderBy ( Item.ORDER.add(Order.CREATED)  
                  , Item.ID.descending() );  
System.out.println( "Row count: " + items.getCount());  
 
for (Item item : items) {  
    String descr = item.getDescr();  
    Date created = item.getOrder().getDate();  
    System.out.println( created + " : " + descr );  
}  
session.close(); 

[代碼] 排序

OrmHandler hr = OrmHandler.getInstance();  
 
MetaColumn col = (MetaColumn)  
           hr.findColumnModel(Order.DESCR);  
 
StringBuilder msg = new StringBuilder()  
    .append("Length : " + col.getMaxLength() + '\n')  
    .append("NotNull: " + col.isMandatory()  + '\n')  
    .append("PrimKey: " + col.isPrimaryKey() + '\n')  
    .append("DB name: " + col.getFullName()  + '\n')  
    ;  
System.out.println(msg); 

原文鏈接：http://www.oschina.net/news/25177/ujorm-1-2-2-java-orm-framework

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