程序包 org.babyfish.jimmer.sql

注释接口 JoinTable

@Retention(RUNTIME)
@Target(allowedTargets=PROPERTY)
@Target(METHOD)
public @interface JoinTable

This annotation should typically be used with ManyToMany, but it can also be used with ManyToOne or OneToOne.

The annotation cannot be used by the reversed(with `mappedBy`) property

The middle table should only have two columns:

• one pointing to the foreign key of the entity in which the current property resides
• and the other pointing to the foreign key of the entity returned by the current property

The two foreign keys are combined to serve as the primary key.

• For many-to-many associations, if you want to add more business fields to the middle table, this annotation is no longer applicable, please use ManyToManyView
• For many-to-one associations, unique constraint should be added to the foreign key pointing to the entity in which the current property resides.
• For one-to-one associations, unique constraint should be added to each foreign key.

可选元素概要

可选元素

修饰符和类型	可选元素	说明
JoinColumn[]	inverseColumns	The column names of the foreign key of the entity returned by the current property
String	inverseJoinColumnName	The column names of the foreign key of the entity returned by the current property
String	joinColumnName	The column name of the foreign key of the entity in which the current property resides
JoinColumn[]	joinColumns	The column name of the foreign key of the entity in which the current property resides
String	name	Middle table name.

元素详细资料

name

String name

Middle table name.

If it is not specified, it will be determined by Jimmer. For example, If the current entity is `Book` and the target entity is `Author`, the default middle table name is `BOOK_AUTHOR_MAPPING`

默认值:

""

joinColumnName

String joinColumnName

The column name of the foreign key of the entity in which the current property resides

This argument cannot be specified together with joinColumns()

It is better than joinColumns() when foreign key is real database constraint and has only one column

默认值:

""

inverseJoinColumnName

String inverseJoinColumnName

The column names of the foreign key of the entity returned by the current property

This argument cannot be specified together with inverseColumns()

It is better than inverseColumns() when foreign key is real database constraint and has only one column

默认值:

""

joinColumns

JoinColumn[] joinColumns

The column name of the foreign key of the entity in which the current property resides

This argument cannot be specified together with joinColumnName()

This argument must be configured when foreign key * is not real database constraint or has only more than 1 columns

默认值:

{}

inverseColumns

JoinColumn[] inverseColumns

The column names of the foreign key of the entity returned by the current property

This argument cannot be specified together with inverseJoinColumnName()

This argument must be configured when foreign key is not real database constraint or has only more than 1 columns

默认值:

{}