diff --git a/README.md b/README.md index ebf6740a5fb73620b0acee2c33908e38ac863fc2..391d6cc38f4bdbeb979fa7cd5b2cf8fe76345915 100644 --- a/README.md +++ b/README.md @@ -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
snowflakeid(雪花ID-推荐)
uuid(UUID)
uuid.hex(UUID十六进制)
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 listStudents =service.query(student); + //... } - + + //查询所有记录 + @Test + public void findAll() throws Exception{ + _logger.info("findAll..."); + List 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 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 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 listStudents = - service.queryPageResults(student).getRows(); - for (Students s : listStudents) { - _logger.info("Students "+s); - } + JpaPageResults results = service.queryPageResults(student); + List 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 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 listStudents =service.query(student); - for (Students s : listStudents) { - _logger.info("Students "+s); - } + JpaPageResults 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 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 listStudents =service.findAll(); - for (Students s : listStudents) { - _logger.info("Students "+s); - } - } - - //... ``` -## 3、映射文件配置 +## 3、mapper配置 ```xml diff --git a/mybatis-jpa-extra-core/src/test/java/org/apache/mybatis/jpa/test/MyBatisTestRunner.java b/mybatis-jpa-extra-core/src/test/java/org/apache/mybatis/jpa/test/MyBatisTestRunner.java index 9c84dd837f6804115f19f48f7e8075cd7458e5ca..65e85be3cb95843e679c8db612c466d56342a071 100644 --- a/mybatis-jpa-extra-core/src/test/java/org/apache/mybatis/jpa/test/MyBatisTestRunner.java +++ b/mybatis-jpa-extra-core/src/test/java/org/apache/mybatis/jpa/test/MyBatisTestRunner.java @@ -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 allListStudents = - service.queryPageResults(student).getRows(); - for (Students s : allListStudents) { + JpaPageResults results = service.queryPageResults(student); + List 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 allListStudents = - service.queryPageResults("queryPageResults1",student).getRows(); - for (Students s : allListStudents) { + JpaPageResults results = + service.queryPageResults("queryPageResults1",student); + List 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); } }