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description: 
globs: 
alwaysApply: false
---
# Java Backend Template Patterns

## Entity Template Pattern

Entities follow the MyBatis-Plus active record pattern:

```java
@Data
@TableName("${tableName}")
@EqualsAndHashCode(callSuper = true)
public class ${ClassName}Entity extends Model<${ClassName}Entity> {
    // Fields with annotations
}
```

Key annotations used:
- `@TableId(type = IdType.ASSIGN_ID)` - For primary keys
- `@TableField(fill = FieldFill.INSERT)` - Auto-fill on insert
- `@TableLogic` - Logical deletion flag
- `@Schema` - OpenAPI documentation

## Controller Template Pattern

Controllers follow RESTful conventions with Spring Boot:

```java
@RestController
@RequiredArgsConstructor
@RequestMapping("/${functionName}")
@Tag(description = "${tableComment}", name = "${tableComment}管理")
public class ${ClassName}Controller {
    // CRUD endpoints
}
```

Standard endpoints:
- `GET /{id}` - Get by ID
- `GET /page` - Paginated list
- `POST` - Create new
- `PUT` - Update existing
- `DELETE` - Delete (logical or physical)

## Service Layer Pattern

Service interface:
```java
public interface ${ClassName}Service extends IService<${ClassName}Entity> {
    // Custom business methods
}
```

Implementation extends ServiceImpl:
```java
@Service
@RequiredArgsConstructor
public class ${ClassName}ServiceImpl extends ServiceImpl<${ClassName}Mapper, ${ClassName}Entity> 
    implements ${ClassName}Service {
    // Business logic implementation
}
```

## Mapper Pattern

MyBatis mapper interface:
```java
@Mapper
public interface ${ClassName}Mapper extends BaseMapper<${ClassName}Entity> {
    // Custom SQL methods
}
```

## Multi-Tenant Support

When `isTenant` is true:
- Entity includes `@TenantTable` annotation
- Automatic tenant filtering in queries
- Tenant ID auto-fill on insert

## Transaction Handling

Master-detail operations use:
```java
@Transactional(rollbackFor = Exception.class)
public Boolean save${ClassName}(${ClassName}Entity entity) {
    // Parent save
    // Children save/update/delete
}
```

## Security Annotations

Common security patterns:
- `@PreAuthorize("@pms.hasPermission('${functionName}_add')")` - Permission check
- `@SysLog("新增${tableComment}")` - Audit logging
- `@Inner(false)` - Internal service access control