本节为小伙伴们介绍，Function的面向对象的特性：继承与多态；
一、继承
我们在3.4.1【构建第一个Function】一文中伴随模型新增函数和独立类新增函数绑定到模型部分都是在父模型PetShop新增了sayHello的Function，同样其子模型都具备sayHello的Function。因为我们是通过Function的namespace来做依据的，子模型在继承父模型的sayHello函数后会以子模型的编码为namespace，名称则同样为sayHello。
二、多态（举例）
oinone的多态，我们只提供覆盖功能，不提供重载，因为oinone相同name和fun的情况下不会去识别参数个数和类型。
Step1 为PetShop新增hello函数
package pro.shushi.pamirs.demo.api.model;
…… //import
@Model.model(PetShop.MODEL_MODEL)
@Model(displayName = "宠物店铺",summary="宠物店铺",labelFields ={"shopName"} )
@Model.Code(sequence = "DATE_ORDERLY_SEQ",prefix = "P",size=6,step=1,initial = 10000,format = "yyyyMMdd")
public class PetShop extends AbstractDemoIdModel {
public static final String MODEL_MODEL="demo.PetShop";
…… //省略其他代码
@Function(openLevel = FunctionOpenEnum.API)
@Function.Advanced(type= FunctionTypeEnum.QUERY)
public PetShop sayHello(PetShop shop){
PamirsSession.getMessageHub().info("Hello:"+shop.getShopName());
return shop;
}
@Function(name = "sayHello2",openLevel = FunctionOpenEnum.API)
@Function.Advanced(type= FunctionTypeEnum.QUERY)
@Function.fun("sayHello2")
public PetShop sayHello(PetShop shop, String s) {
PamirsSession.getMessageHub().info("Hello:"+shop.getShopName()+",s:"+s);
return shop;
}
@Function(openLevel = FunctionOpenEnum.API)
@Function.Advanced(type= FunctionTypeEnum.QUERY)
public PetShop hello(PetShop shop){
PamirsSession.getMessageHub().info("Hello:"+shop.getShopName());
return shop;
}
}Step2 为PetShopProxyB新增对应的三个函数
其中PetShopProxyB新增的hello函数，在java中是重载了hello，在代码中new PetShopProxyB()是可以调用父类的sayHello单参方法，也可以调用本类的双参方法。但在oinone的体系中对于PetShopProxyB只有一个可识别的Function就是双参的sayHello
package pro.shushi.pamirs.demo.api.proxy;
import pro.shushi.pamirs.demo.api.model.PetCatItem;
import pro.shushi.pamirs.demo.api.model.PetShop;
import pro.shushi.pamirs.meta.annotation.Field;
import pro.shushi.pamirs.meta.annotation.Function;
import pro.shushi.pamirs.meta.annotation.Model;
import pro.shushi.pamirs.meta.api.session.PamirsSession;
import pro.shushi.pamirs.meta.enmu.FunctionOpenEnum;
import pro.shushi.pamirs.meta.enmu.FunctionTypeEnum;
import pro.shushi.pamirs.meta.enmu.ModelTypeEnum;
import java.util.List;
@Model.model(PetShopProxyB.MODEL_MODEL)
@Model.Advanced(type = ModelTypeEnum.PROXY,inherited ={PetShopProxy.MODEL_MODEL,PetShopProxyA.MODEL_MODEL} )
@Model(displayName = "宠物店铺代理模型B",summary="宠物店铺代理模型B")
public class PetShopProxyB extends PetShop {
public static final String MODEL_MODEL="demo.PetShopProxyB";
@Field.one2many
@Field(displayName = "萌猫商品列表")
@Field.Relation(relationFields = {"id"},referenceFields = {"shopId"})
private List<PetCatItem> catItems;
@Function(openLevel = FunctionOpenEnum.API)
@Function.Advanced(type= FunctionTypeEnum.QUERY)
public PetShop sayHello(PetShop shop){
PamirsSession.getMessageHub().info("PetShopProxyB Hello:"+shop.getShopName());
return shop;
}
@Function(name = "sayHello2",openLevel = FunctionOpenEnum.API)
@Function.Advanced(type= FunctionTypeEnum.QUERY)
@Function.fun("sayHello2")
public PetShop sayHello(PetShop shop,String hello){
PamirsSession.getMessageHub().info("PetShopProxyB say:"+hello+","+shop.getShopName());
return shop;
}
@Function(openLevel = FunctionOpenEnum.API)
@Function.Advanced(type= FunctionTypeEnum.QUERY)
public PetShop hello(PetShop shop,String hello){
PamirsSession.getMessageHub().info("PetShopProxyB hello:"+hello+","+shop.getShopName());
return shop;
}
}Step3 重启看效果
-
查看petShopQuery的sayHello、sayHello2、hello三个函数，结果正常
-
查看petShopProxyBQuery的sayHello、sayHello2、hello三个函数结果都被重载了，而且hello函数传不传参数hello，都是调用的本类的双参函数
query{
petShopQuery{
sayHello(shop:{shopName:"cpc"}){
shopName
}
sayHello2(shop:{shopName:"cpc"},s:"sss"){
shopName
}
hello(shop:{shopName:"cpc"}){
shopName
}
}
petShopProxyBQuery{
sayHello(shop:{shopName:"cpc"}){
shopName
}
sayHello2(shop:{shopName:"cpc"},hello:"sss"){
shopName
}
hello(shop:{shopName:"cpc"},hello:"hello"){
shopName
}
}
}
三、模型的默认函数重写
对默认函数的重写，教程很多处都有涉及，大家可以自行测试。
| 名称 | 重写示例 | 说明 |
|---|---|---|
| 创建 | @Action.Advanced(name = FunctionConstants.create, managed = true, invisible = ExpConstants.idValueExist) @Action(displayName = “确定”, summary = “添加”, bindingType = ViewTypeEnum.FORM) @Function(name = FunctionConstants.create) @Function.fun(FunctionConstants.create) |
这里以宠物品种为例罗列出来，在方法上以注解的方式增加【重写示例】列的内容 |
| 修改 | @Action.Advanced(name = FunctionConstants.update, managed = true, invisible = ExpConstants.idValueNotExist) @Action(displayName = “确定”, summary = “修改”, bindingType = ViewTypeEnum.FORM) @Function(name = FunctionConstants.update) @Function.fun(FunctionConstants.update) |
|
| 分页查询 | @Function.Advanced(type = FunctionTypeEnum.QUERY,category= FunctionCategoryEnum.QUERY_PAGE ) @Function.fun(FunctionConstants.queryPage) @Function(openLevel = {FunctionOpenEnum.API})public Pagination queryPage(Pagination page, IWrapper queryWrapper) |
|
| 查询单条 | @Function.Advanced(type= FunctionTypeEnum.QUERY) @Function.fun(FunctionConstants.queryByEntity)@Function(openLevel = {FunctionOpenEnum.API})public PetShopProxyB queryOne(PetShopProxyB query) |
|
| 删除 | @Function.Advanced(type = FunctionTypeEnum.DELETE) @Function.fun(FunctionConstants.deleteWithFieldBatch) @Function(name = FunctionConstants.delete) @Action(displayName = “删除”, contextType = ActionContextTypeEnum.SINGLE_AND_BATCH)public PetType delete(PetType data) |
|
| 构造 | @Function(openLevel = FunctionOpenEnum.API) @Function.Advanced(type= FunctionTypeEnum.QUERY) public PetShopBatchUpdate construct(PetShopBatchUpdate petShopBatchUpdate, List petShopList){ |
在模型的类型一文中【新增PetShopBatchUpdateAction类】章节中提到覆盖数据构造器（construct）,接收从宠物商店列表多选带过来的数据参数，非PetShopBatchUpdate本模型参数不能放第一个，用List petShopList来接收，进行数据组装逻辑处理，对应数据也是由PetShopBatchUpdate来承载返回给PetShopBatchUpdate的Form编辑页 |
Oinone社区 作者：史, 昂原创文章，如若转载，请注明出处：https://doc.oinone.top/oio4/9246.html
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