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# DB数据源
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   DataSource是数据层操作的抽象接口,
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## 注解说明
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|注解类名 | 功能描述|
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| --- | --- |
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|@Column |标记字段,与JPA用法一致 |
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|@Entity |标记实体类,与JPA用法一致 |
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|@Id |标记主键字段,与JPA用法一致 |
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|@Table |标记表的别名,与JPA用法一致 |
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|@Transient |标记是否为表对应的字段,与JPA用法一致 |
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|@VirtualEntity |用于非数据库表对应的Entity类,且仅用于开启缓存模式的DataSource |
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|@DistributeTable |标记表进行分表分库存储, 与DistributeTableStrategy接口结合使用 |
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|@FilterColumn |用于FilterBean过滤类的字段设置 |
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|@FilterJoinColumn |用于FilterBean过滤类的关联表字段设置 |
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|@FilterGroup | 用于FilterBean过滤类的过滤条件分组设置 |
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## 操作方法
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|系列方法 | 功能描述|
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| --- | --- |
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|insert |插入实体 |
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|delete |删除实体 |
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|update |更新实体 |
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|updateColumn |更新数据的部分字段 |
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|find |查找单个对象 |
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|queryList |查询对象的List集合 |
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|querySheet |查询对象的Sheet页式集合 |
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|getNumberXXX |统计查询,用于查询字段的总和、最大值、平均值等数据 |
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|queryColumnXXX |单个字段数据查询和字段的统计查询 |
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|nativeXXX |直接运行SQL语句,用于复杂的关联查询与更新(仅限DataSqlSource) |
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## 配置数据源
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```properties
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@@ -37,23 +65,28 @@ public class Account {
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  新增实体对象:
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```java
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//新增单个
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Account account = new Account();
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account.setAccountid("account1");
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account.setAccountName("Hello");
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account.setCreateTime(System.currentTimeMillis());
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source.insert(account);
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@Resource(name = "platf")
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private DataSource source;
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//异步新增多个
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Account a1 = new Account();
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a1.setAccountid("account1");
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a1.setAccountName("Hello1");
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a1.setCreateTime(System.currentTimeMillis());
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Account a2 = new Account();
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a2.setAccountid("account2");
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a2.setAccountName("Hello2");
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a2.setCreateTime(System.currentTimeMillis());
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source.insertAsync(a1, a2);
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public void insertTest() {
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//新增单个
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Account account = new Account();
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account.setAccountid("account1");
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account.setAccountName("Hello");
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account.setCreateTime(System.currentTimeMillis());
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source.insert(account);
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//异步新增多个
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Account a1 = new Account();
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a1.setAccountid("account1");
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a1.setAccountName("Hello1");
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a1.setCreateTime(System.currentTimeMillis());
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Account a2 = new Account();
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a2.setAccountid("account2");
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a2.setAccountName("Hello2");
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a2.setCreateTime(System.currentTimeMillis());
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source.insertAsync(a1, a2);
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}
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```
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  修改实体对象:
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