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SkuDaoImpl.java
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SkuDaoImpl.java
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package band.wukong.mz.g.sku.dao.impl;
import band.wukong.mz.base.BaseValidator;
import band.wukong.mz.base.exception.IllegalParameterException;
import band.wukong.mz.g.sku.bean.Goods;
import band.wukong.mz.g.sku.bean.Sku;
import band.wukong.mz.g.sku.bean.SkuMore;
import band.wukong.mz.g.sku.dao.SkuDao;
import band.wukong.mz.g.sku.dao.SkuDaoValidator;
import band.wukong.mz.nutz.NutzDaoHelper;
import band.wukong.mz.nutz.NutzSqlHelper;
import org.nutz.dao.Cnd;
import org.nutz.dao.Dao;
import org.nutz.dao.QueryResult;
import org.nutz.dao.Sqls;
import org.nutz.dao.entity.Record;
import org.nutz.dao.pager.Pager;
import org.nutz.dao.sql.Sql;
import org.nutz.dao.sql.SqlCallback;
import org.nutz.ioc.loader.annotation.Inject;
import org.nutz.ioc.loader.annotation.IocBean;
import org.nutz.lang.Strings;
import org.nutz.log.Log;
import org.nutz.log.Logs;
import org.nutz.trans.Atom;
import org.nutz.trans.Trans;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
/**
* As you see...
*
* @author wukong(wukonggg@139.com)
*/
@IocBean(name = "skuDao")
public class SkuDaoImpl implements SkuDao {
private static final Log log = Logs.get();
@Inject
private Dao dao;
@Override
public Sku insertWithMore(Sku s) {
if (!SkuDaoValidator.insert(s)) {
throw new IllegalParameterException();
}
return dao.insertWith(s, "moreList");
}
@Override
public Sku findWithLinks(Long id) {
if (!BaseValidator.gtZero(id)) {
throw new IllegalParameterException();
}
Sku sc = dao.fetch(Sku.class, id);
dao.fetchLinks(sc, "moreList");
dao.fetchLinks(sc, "goods");
return sc;
}
@Override
public Sku findWithLinks(String sid) {
if (Strings.isBlank(sid)) {
throw new IllegalParameterException();
}
Sku sc = dao.fetch(Sku.class, sid);
dao.fetchLinks(sc, "moreList");
dao.fetchLinks(sc, "goods");
return sc;
}
@Override
public void updateWithMore(final Sku s) {
if (!SkuDaoValidator.udpate(s)) {
throw new IllegalParameterException();
}
s.setUtime(new Date());
Trans.exec(new Atom() {
public void run() {
dao.update(s);
dao.clear(SkuMore.class, Cnd.where("skuId", "=", s.getId()));
dao.fastInsert(s.getMoreList());
}
});
//CASE nutz:dao 数据库事务的使用
// FIXME 这里的事务还没有做失败时的单元测试
}
@Override
public void rm(Long id) {
if (!BaseValidator.gtZero(id)) {
throw new IllegalParameterException();
}
Sku gs = dao.fetch(Sku.class, id);
gs.setState(Sku.STATE_RM);
dao.update(gs);
}
@Override
public QueryResult list(String cateCode, String qcond, int pageNum, int pageSize) {
if (Strings.isBlank(cateCode)) {
throw new IllegalParameterException();
}
Sql sql = dao.sqls().create("sku.list");
sql.params().set("t_state", Sku.STATE_ON);
sql.params().set("t1_state", Goods.STATE_OK);
sql.params().set("cate_code", cateCode + "%");
sql.params().set("qcond", "%" + qcond + "%");
sql.setCallback(Sqls.callback.records());
int count = count4List(sql.getSourceSql(), cateCode, qcond);
Pager pager = NutzDaoHelper.createPager(pageNum, pageSize, count);
sql.setPager(pager);
dao.execute(sql);
List<Record> list = sql.getList(Record.class);
List<Sku> scList = new ArrayList<Sku>();
for (Record re : list) {
Sku sc = re.toEntity(dao.getEntity(Sku.class), "sc.");
sc.setCount(re.getInt("sc.count"));
Goods g = re.toEntity(dao.getEntity(Goods.class), "g.");
sc.setGoods(g);
scList.add(sc);
}
return new QueryResult(scList, pager);
//CASE nutz:dao 自定义sql 多表查询自动封装多个bean的例子
/*
//方法一
Entity enA = dao.get(XXX.class);
Entity enB = dao.get(BBB.class);
//方法二
sql.setCallback() {
while (rs.next()){
A a = enA.getObject(rs, null, "a.");
B b = enB.getObject(rs, null, "b.");
}
}
*/
}
@Override
public Sku findByGoodsId(Long goodsId) {
return dao.fetch(Sku.class, Cnd.where("goodsId", "=", goodsId));
}
/**
* @param e 原始查询语句,select具体内容的
* @param cateCode cateCode
* @param qcond qcond
* @return count(*)的数量
*/
private int count4List(String e, String cateCode, String qcond) {
Sql sql = Sqls.create(NutzSqlHelper.convertSql2Count(e));
sql.params().set("t_state", Sku.STATE_ON);
sql.params().set("t1_state", Goods.STATE_OK);
sql.params().set("cate_code", cateCode + "%");
sql.params().set("qcond", "%" + qcond + "%");
sql.setCallback(new SqlCallback() {
public Object invoke(Connection conn, ResultSet rs, Sql sql) throws SQLException {
int count = rs.next() ? rs.getInt("count(*)") : 0;
log.debug("count = " + count);
return count;
}
});
dao.execute(sql);
return sql.getInt();
}
}