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Mybatis Jpa Extra

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README.md
浏览文件 @ b87b4183
......@@ -11,6 +11,7 @@
## 1、JPA 2.1注释
## 1.1、注释
仅支持6个注释
> * @Entity
> * @Table
......@@ -19,29 +20,17 @@
> * @GeneratedValue
> * @Transient
主键策略
## 1.2、主键策略
支持3种主键策略，4种AUTO自动主键策略
支持3种主键策略
1. **AUTO**
snowflakeid
uuid
uuid.hex
serial
2. **SEQUENCE**
generator值为数据库序列名
3. **IDENTITY**
generator无，根据数据库自动生成方式
| 序号 | 策略 | 支持 |
| --------| :----- | :---- |
| 1 | **AUTO** | 4种主键自动填充策略<br>snowflakeid(雪花ID-推荐)<br>uuid(UUID)<br>uuid.hex(UUID十六进制)<br>serial(JPA Extra序列) |
| 2 | **SEQUENCE** | 数据库序列生成，generator值为数据库序列名 |
| 3 | **IDENTITY** | 数据库表自增主键 |
## 1、JPA注释
## 1.3、Java Bean 注释
```java
......@@ -53,7 +42,7 @@ public class Students extends JpaBaseEntity implements Serializable{
@Column
@GeneratedValue(strategy=GenerationType.AUTO,generator="snowflakeid")
//@GeneratedValue(strategy=GenerationType.SEQUENCE,generator="SEQ_MYBATIS_STUD")
//@GeneratedValue(strategy=GenerationType.IDENTITY,generator="SEQ_MYBATIS_STUD")
//@GeneratedValue(strategy=GenerationType.IDENTITY)
private String id;
@Column
......@@ -84,8 +73,9 @@ public class Students extends JpaBaseEntity implements Serializable{
//...
}
```
## 2、基本操作
## 2、CURD、Qruey构造器和分页查询
## 2.1、CURD
```java
//新增数据
......@@ -105,6 +95,25 @@ public class Students extends JpaBaseEntity implements Serializable{
_logger.info("insert id " + student.getId());
}
//查询数据实体并更新
@Test
public void update() throws Exception{
_logger.info("get...");
Students student=service.get("317d5eda-927c-4871-a916-472a8062df23");
System.out.println("Students "+student);
_logger.info("Students "+student);
_logger.info("update...");
student.setImages(null);
service.update(student);
_logger.info("updateed.");
student.setImages("ssss".getBytes());
service.update(student);
_logger.info("updateed2.");
}
//根据实体查询并更新
@Test
public void merge() throws Exception{
......@@ -122,24 +131,7 @@ public class Students extends JpaBaseEntity implements Serializable{
Thread.sleep(1000);
_logger.info("merge id " + student.getId());
}
//springJDBC 的查询方式
@Test
public void find() throws Exception{
_logger.info("find...");
_logger.info("find by filter "
+ service.find(" StdNo = '10024' or StdNo = '10004'")
);
_logger.info("find by filter with args "
+ service.find(
" StdNo = ? or StdNo = ? ",
new Object[]{"10024","10004"},
new int[]{Types.VARCHAR,Types.INTEGER}
)
);
}
//根据ID查询
@Test
public void get() throws Exception{
......@@ -149,23 +141,24 @@ public class Students extends JpaBaseEntity implements Serializable{
_logger.info("Students "+student);
}
//查询数据实体并更新
//根据实体查询
@Test
public void update() throws Exception{
_logger.info("get...");
Students student=service.get("317d5eda-927c-4871-a916-472a8062df23");
System.out.println("Students "+student);
_logger.info("Students "+student);
_logger.info("update...");
student.setImages(null);
service.update(student);
_logger.info("updateed.");
student.setImages("ssss".getBytes());
service.update(student);
_logger.info("updateed2.");
public void query() throws Exception{
_logger.info("query...");
Students student=new Students();
student.setStdGender("M");
List<Students> listStudents =service.query(student);
//...
}
//查询所有记录
@Test
public void findAll() throws Exception{
_logger.info("findAll...");
List<Students> listStudents =service.findAll();
//...
}
//根据ID删除
@Test
public void remove() throws Exception{
......@@ -205,22 +198,54 @@ public class Students extends JpaBaseEntity implements Serializable{
service.deleteBatch("2,639178432667713536");
}
//分页查询
```
## 2.2、Find查询和Qruey构造器
```java
//springJDBC 的查询方式
@Test
public void find() throws Exception{
_logger.info("find by filter StdNo = '10024' or StdNo = '10004'");
List<Students> listStudents = service.find(" StdNo = ? or StdNo = ? ",
new Object[]{"10024","10004"},
new int[]{Types.VARCHAR,Types.INTEGER}
);
//...
}
//根据链式条件构造器查询
//WHERE (stdMajor = '政治' and STDAGE > 30 and stdMajor in ( '政治' , '化学' ) or ( stdname = '周瑜' or stdname = '吕蒙' ) )
@Test
public void filterByQuery() throws Exception{
_logger.info("filterByQuery...");
List<Students> listStudents = service.query(
new Query().eq("stdMajor", "政治").and().gt("STDAGE", 30).and().in("stdMajor", new Object[]{"政治","化学"})
.or(new Query().eq("stdname", "周瑜").or().eq("stdname", "吕蒙")));
//...
}
```
## 2.3、分页查询并count数据量
```java
//根据实体分页查询
@Test
public void queryPageResults() throws Exception{
_logger.info("queryPageResults...");
Students student=new Students();
//student.setId("af04d610-6092-481e-9558-30bd63ef783c");
//student.setStdGender("M");
//student.setStdMajor(政治");
student.setPageSize(10);
//student.setPageNumber(2);
student.calculate(21);
List<Students> listStudents =
service.queryPageResults(student).getRows();
for (Students s : listStudents) {
_logger.info("Students "+s);
}
JpaPageResults<Students> results = service.queryPageResults(student);
List<Students> rowsStudents = results.getRows();
long records =results.getRecords();//当前页记录数量
long totalPage =results.getTotalPage();//总页数
long total =results.getTotal();//总数据量
long page =results.getPage();//当前页
//...
}
//mapper id分页查询
......@@ -232,51 +257,14 @@ public class Students extends JpaBaseEntity implements Serializable{
//student.setStdMajor(政治");
student.setPageSize(10);
student.setPageNumber(2);
List<Students> listStudents =
service.queryPageResults("queryPageResults1",student).getRows();
for (Students s : listStudents) {
_logger.info("Students "+s);
}
}
//根据实体查询
@Test
public void query() throws Exception{
_logger.info("query...");
Students student=new Students();
student.setStdGender("M");
List<Students> listStudents =service.query(student);
for (Students s : listStudents) {
_logger.info("Students "+s);
}
JpaPageResults<Students> results =
service.queryPageResults("queryPageResults1",student);
//...
}
//根据链式条件构造器查询
//WHERE (stdMajor = '政治' and STDAGE > 30 and stdMajor in ( '政治' , '化学' ) or ( stdname = '周瑜' or stdname = '吕蒙' ) )
@Test
public void filterByQuery() throws Exception{
_logger.info("filterByQuery...");
List<Students> listStudents =service.query(
new Query().eq("stdMajor", "政治").and().gt("STDAGE", 30).and().in("stdMajor", new Object[]{"政治","化学"})
.or(new Query().eq("stdname", "周瑜").or().eq("stdname", "吕蒙")));
for (Students s : listStudents) {
_logger.info("Students "+s);
}
}
//查询所有记录
@Test
public void findAll() throws Exception{
_logger.info("findAll...");
List<Students> listStudents =service.findAll();
for (Students s : listStudents) {
_logger.info("Students "+s);
}
}
//...
```
## 3、映射文件配置
## 3、mapper配置
```xml
<mapper namespace="org.apache.mybatis.jpa.test.dao.persistence.StudentsMapper" >
......
mybatis-jpa-extra-core/src/test/java/org/apache/mybatis/jpa/test/MyBatisTestRunner.java
浏览文件 @ b87b4183
......@@ -23,6 +23,7 @@ import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import org.apache.mybatis.jpa.persistence.JpaPageResults;
import org.apache.mybatis.jpa.query.Query;
import org.apache.mybatis.jpa.test.dao.service.StudentsService;
import org.apache.mybatis.jpa.test.entity.Students;
......@@ -157,15 +158,20 @@ public class MyBatisTestRunner {
_logger.info("queryPageResults...");
Students student=new Students();
//student.setId("af04d610-6092-481e-9558-30bd63ef783c");
//student.setStdGender("M");
//student.setStdMajor(政治");
student.setPageSize(10);
//student.setPageNumber(2);
student.calculate(21);
List<Students> allListStudents =
service.queryPageResults(student).getRows();
for (Students s : allListStudents) {
JpaPageResults<Students> results = service.queryPageResults(student);
List<Students> rowsStudents = results.getRows();
long records =results.getRecords();//当前页记录数量
long totalPage =results.getTotalPage();//总页数
long total =results.getTotal();//总数据量
long page =results.getPage();//当前页
_logger.info("records {} , totalPage {} , total {} , page {} ",
records,totalPage,total,page);
for (Students s : rowsStudents) {
_logger.info("Students "+s);
}
}
......@@ -180,9 +186,16 @@ public class MyBatisTestRunner {
student.setPageSize(10);
student.setPageNumber(2);
List<Students> allListStudents =
service.queryPageResults("queryPageResults1",student).getRows();
for (Students s : allListStudents) {
JpaPageResults<Students> results =
service.queryPageResults("queryPageResults1",student);
List<Students> rowsStudents = results.getRows();
long records =results.getRecords();//当前页记录数量
long totalPage =results.getTotalPage();//总页数
long total =results.getTotal();//总数据量
long page =results.getPage();//当前页
_logger.info("records {} , totalPage {} , total {} , page {} ",
records,totalPage,total,page);
for (Students s : rowsStudents) {
_logger.info("Students "+s);
}
}
......
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