org.teasoft.bee.osql

Interface MoreTable

All Superinterfaces:

CommOperate

public interface MoreTable
extends CommOperate

More table select(multi-table query).

example1:

public class Orders{

private Long id;

private String userid;

private String name;

private BigDecimal total;

private Timestamp createtime;

private String remark;

private String sequence;

//@JoinTable(mainField="userid", subField="username")

//@JoinTable(mainField="userid", subField="username", joinType=JoinType.LEFT_JOIN) //ok //... from orders left join user on orders.userid=user.username where ...

@JoinTable(mainField="userid,name", subField="username,name", joinType=JoinType.JOIN)

//@JoinTable(mainField="userid", subField="username",subAlias="myuser" , joinType=JoinType.FULL_JOIN)

//@JoinTable()

private User user;

// ... get,set methods.

}

public class User {

private Long id;

private String email;

private String lastName;

private String name;

private String password;

private String username;

private Timestamp createtime;

// ... get,set methods.

}

public class MoreTableExam {

public static void main(String[] args) {

MoreTable moreTable=BeeFactory.getHoneyFactory().getMoreTable();

Orders orders1=new Orders();

orders1.setUserid("bee");

orders1.setName("Bee(ORM Framework)");

User user=new User();

user.setEmail("beeUser@163.com");

orders1.setUser(user);

List list1 =moreTable.select(orders1); //select

// List list1 =moreTable.select(orders1,0,10); //select,paging

//... process list1

}

}

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example2: List type sub entity field

@Entity("Clazz")

public class Clazz0 implements Serializable {

private static final long serialVersionUID = 1591972382398L;

private Integer id;

private String classname;

private String place;

private String teachername;

private String remark;

@JoinTable(mainField="id", subField="classno", joinType=JoinType.LEFT_JOIN,subClass="Student")

private List studentList=new ArrayList<>();

//subClass="Student", if sub Entity and main Entity in the same package, can use class name only.

//full like, subClass="org.teasoft.exam.bee.osql.entity.Student")

//... get,set method

}

public class Student implements Serializable {

private static final long serialVersionUID = 1591622324231L;

private Integer id;

private Integer sid;

private String name;

private Integer age;

private Boolean sex;

private String majorid;

private Boolean flag;

private Integer classno;

//... get,set method

}

public static void main(String[] args) {

MoreTable moreTable = BeeFactoryHelper.getMoreTable();

Clazz0 c0=new Clazz0();

List list0=moreTable.select(c0);

Printer.printList(list0); //print list

}

Since:

1.7

Author:

Kingstar

Method Summary

Modifier and Type	Method and Description
<T> List<T>	select(T entity) According to entity object select records from database.
<T> List<T>	select(T entity, Condition condition) Select the records according to entity and condition.
<T> List<T>	select(T entity, int start, int size) According to entity object select records from database.
MoreTable	setDynamicParameter(String para, String value) set dynamic parameter for dynamic table & entity name This method is called earlier than the select methods.

Methods inherited from interface org.teasoft.bee.osql.CommOperate

getDataSourceName, getInterceptorChain, setDataSourceName, setNameTranslate

Method Detail

select

<T> List<T> select(T entity)

According to entity object select records from database.

Parameters:

entity - table's entity(do not allow null).
entity corresponding to table and can not be null.
If the field value is not null and not empty string as filter condition,
the operator is equal sign.eg:field=value

Returns:

list can contain more than one entity

select

<T> List<T> select(T entity,
                   int start,
                   int size)

According to entity object select records from database.

Parameters:

entity - table's entity(do not allow null).
entity corresponding to table and can not be null.
If the field value is not null and not empty string as filter condition,
the operator is equal sign.eg:field=value

start - Start index,min value is 0 or 1(eg:MySQL is 0,Oracle is 1).

size - Fetch result size (>0).

Returns:

list can contain more than one entity

select

<T> List<T> select(T entity,
                   Condition condition)

Select the records according to entity and condition.

Parameters:

entity - table's entity(do not allow null).

condition - If the field of entity is not null or empty,
it will be translate to field=value.Other can define with condition.

Returns:

list can contain more than one entity

setDynamicParameter

MoreTable setDynamicParameter(String para,
                              String value)

set dynamic parameter for dynamic table & entity name
This method is called earlier than the select methods.

Parameters:

para - parameter name

value - parameter value

Returns:

MoreTable

Since:

1.9