Mybatisplus-plus 1.1.0 is released, add, delete, modify and check according to multiple fields combined primary key

Native mybatisplus only supports one primary key, mpp supports multiple fields to add, delete, and modify the primary key. Mapper needs to inherit the fields of the combined primary key in the MppBaseMapper entity class, which needs to be modified with @MppMultiId

Use @MppMultiId on instance class member variables to indicate the combined primary key

@TableName("test07")
public class Test07Entity {
    @MppMultiId
    @TableField(value = "k1")
    private Integer k1;

    @MppMultiId
    @TableField(value = "k2")
    private String k2;
    
    @TableField(value = "col1")
    private String col1;
    @TableField(value = "col2")
    private String col2;    


mapper需要继承MppBaseMapper
@Mapper

public interface Test07Mapper extends MppBaseMapper<Test07Entity> {
}
​​​​​​​
根据多主键增删改查
    public void testMultiId(){
        //id
        Test07Entity idEntity=new Test07Entity();
        idEntity.setK1(1);
        idEntity.setK2("111");
        //del
        test07Mapper.deleteByMultiId(idEntity);
        //add
        test07Mapper.insert(idEntity);
        //query
        Test07Entity retEntity=test07Mapper.selectByMultiId(idEntity);
        retEntity.setCol1("xxxx");
        //update
        test07Mapper.updateByMultiId(retEntity);
    }