!169 DbChain 添加测试类与文档

Merge pull request !169 from 王帅/main
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Michael Yang 2023-07-23 04:24:29 +00:00 committed by Gitee
commit b5d9fe13f8
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3 changed files with 152 additions and 9 deletions

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@ -28,14 +28,36 @@ List<Row> rows = Db.selectListBySql(sql,18);
//分页查询:每页 10 条数据,查询第 3 页的年龄大于 18 的用户
QueryWrapper query = QueryWrapper.create()
.where(ACCOUNT.AGE.ge(18));
Page<Row> rowPage = Db.paginate("tb_account",3,10,query);
QueryWrapper query=QueryWrapper.create()
.where(ACCOUNT.AGE.ge(18));
Page<Row> rowPage=Db.paginate("tb_account",3,10,query);
```
> Db 工具类还提供了更多 增、删、改、查和分页查询等方法。
>
> 具体参考: [Db.java](https://gitee.com/mybatis-flex/mybatis-flex/blob/main/mybatis-flex-core/src/main/java/com/mybatisflex/core/row/Db.java) 。
>
具体参考: [Db.java](https://gitee.com/mybatis-flex/mybatis-flex/blob/main/mybatis-flex-core/src/main/java/com/mybatisflex/core/row/Db.java) 。
## DbChain 链式 Db 调用
使用 `DbChain` 之后无需将 `QueryWrapper``Row` 的构建分离,直接即可进行操作。
```java
// 新增 Row 构建
DbChain.table("tb_account")
.set(RowKey.AUTO)
.set("user_name","王帅")
.set("age",18)
.set("birthday",new Date())
.save();
// 查询 QueryWrapper 构建
DbChain.table("tb_account")
.select("id","user_name","age","birthday")
.where("age > ?",18)
.list()
.forEach(System.out::println);
```
## Row.toEntity()
@ -45,7 +67,7 @@ Page<Row> rowPage = Db.paginate("tb_account",3,10,query);
代码示例:
```java
Row row = Db.selectOneBySql("select * from ....");
Row row=Db.selectOneBySql("select * from ....");
Account entity = row.toEntity(Account.class);
```
@ -125,7 +147,7 @@ System.out.println(articles);
public class Other {
private String id;
private String userName;
//getter setter
}
```

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@ -57,11 +57,22 @@ public class DbChain extends QueryWrapperAdapter<DbChain> {
/**
* 覆盖 {@link QueryWrapper} 的静态方法仅用于查询必须使用 {@code from(...)} 方法指定表
*
* @deprecated 使用 {@code table(...)} 方法创建
*/
@Deprecated
public static DbChain create() {
return new DbChain();
}
/**
* @deprecated 覆盖 {@link QueryWrapper} 的静态方法
*/
@Deprecated
public static DbChain create(Object entity) {
throw new UnsupportedOperationException();
}
public static DbChain table(String tableName) {
return new DbChain(tableName);
}
@ -86,12 +97,12 @@ public class DbChain extends QueryWrapperAdapter<DbChain> {
return rowData;
}
public DbChain set(RowKey rowKey) {
public DbChain setId(RowKey rowKey) {
getRow().getPrimaryKeys().add(rowKey);
return this;
}
public DbChain set(RowKey rowKey, Object value) {
public DbChain setId(RowKey rowKey, Object value) {
getRow().getPrimaryKeys().add(rowKey);
getRow().put(rowKey.keyColumn, value);
return this;
@ -136,7 +147,7 @@ public class DbChain extends QueryWrapperAdapter<DbChain> {
return SqlUtil.toBool(Db.updateById(schema, tableName, getRow()));
}
private Row toRow(Object entity) {
private static Row toRow(Object entity) {
Class<?> entityClass = entity.getClass();
TableInfo tableInfo = TableInfoFactory.ofEntityClass(entity.getClass());
Row row = new Row();

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@ -0,0 +1,110 @@
/*
* Copyright (c) 2022-2023, Mybatis-Flex (fuhai999@gmail.com).
* <p>
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.mybatisflex.test;
import com.mybatisflex.core.MybatisFlexBootstrap;
import com.mybatisflex.core.audit.AuditManager;
import com.mybatisflex.core.audit.ConsoleMessageCollector;
import com.mybatisflex.core.row.DbChain;
import com.mybatisflex.core.row.Row;
import com.mybatisflex.core.row.RowKey;
import org.junit.BeforeClass;
import org.junit.Test;
import org.springframework.jdbc.datasource.embedded.EmbeddedDatabaseBuilder;
import org.springframework.jdbc.datasource.embedded.EmbeddedDatabaseType;
import javax.sql.DataSource;
import java.util.Date;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
/**
* @author 王帅
* @since 2023-07-23
*/
public class DbChainTest {
@BeforeClass
public static void init() {
DataSource dataSource = new EmbeddedDatabaseBuilder()
.setType(EmbeddedDatabaseType.H2)
.addScript("schema.sql")
.addScript("data.sql")
.build();
MybatisFlexBootstrap.getInstance()
.setDataSource(dataSource)
.start();
AuditManager.setAuditEnable(true);
AuditManager.setMessageCollector(new ConsoleMessageCollector());
}
@Test
public void testSave() {
boolean saved = DbChain.table("tb_account")
.setId(RowKey.AUTO)
.set("user_name", "王帅")
.set("age", 18)
.set("birthday", new Date())
.save();
Row row = DbChain.table("tb_account")
.where("user_name = ?", "王帅")
.one();
System.out.println(row);
assertTrue(saved);
}
@Test
public void testUpdate() {
boolean updated = DbChain.table("tb_account")
.setId(RowKey.AUTO, 1)
.set("age", 1000)
.updateById();
Row row = DbChain.table("tb_account")
.where("id = ?", 1)
.one();
System.out.println(row);
assertTrue(updated);
}
@Test
public void testRemove() {
DbChain.table("tb_account")
.where("id = ?", 1)
.remove();
long count = DbChain.table("tb_account").count();
assertEquals(1, count);
}
@Test
public void testList() {
DbChain.table("tb_account")
.list()
.forEach(System.out::println);
}
}