android 超轻量级的ORM框架

import android.annotation.SuppressLint;
//依赖注入配置
@SuppressLint("UseValueOf")
public class Entity {

	/**
	 * 默认主键，自增。最好有id主键，便于debug和逻辑判断。
	 * 
	 * 暂不支持自定义主键
	 */
	int id;

	public boolean base_boolean;
	public double base_double;
	public float base_float;
	public int base_int;
	public long base_long;

	public Boolean mBoolean;
	public Double mDouble;
	public Float mFloat;
	public Integer mInteger;
	public Long mLong;
	public String mString;
}

private DB db= DB.getInstance(mContext);

//依赖注入

@SuppressLint("UseValueOf")

Entity entity = new Entity();
entity.base_boolean = true;
entity.base_double = 10.2;
entity.base_float = 9.1f;
entity.base_int = 99;
entity.base_long = System.currentTimeMillis();
entity.mBoolean = new Boolean(true);
entity.mDouble = new Double(10.2);
entity.mFloat = new Float(9.1);
entity.mInteger = new Integer(99);
entity.mLong = new Long(System.currentTimeMillis() / 1000);
entity.mString = new String("test");
db.save(entity);

List<Entity> list = db.findAll(Entity.class);
if (list != null && list.size() > 0) {
	Entity entity = list.get(0);
	db.delete(entity);
}

//删除所有
// db.deleteAll(Entity.class);

//按条件删除
// db.deleteByWhere(Entity.class, "");

List<Entity> list = db.findAll(Entity.class);
	if (list.size() > 0) {
	<span style="white-space:pre">	</span>Entity entity = list.get(0);
		entity.base_int = 23482374;

<span style="white-space:pre">		</span>//按条件更新
		// db.update(Entity, "id=1");
		db.update(entity);
	}

List<Entity> list = db.findAll(Entity.class);
	//条件查询
	//db.findAllByWhere(Entity.class, "id=1");

db.dropTable(Entity.class);

// 开始事务。提高效率(不用事务，插入1000条数据可能要十几秒，用事务可能不到1秒，具体要看类是否复制)
	db.beginTrancation();

<span style="white-space:pre">	</span>for (int i = 0; i < 1000; i++) {
		db.save(entity);
	}

<span style="white-space:pre">	</span>db.endTrancation();