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Easy-mapper is a simple, light-weighted, high performance java bean mapping framework

License: Apache License 2.0

Java 100.00%

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容器启动时，偶尔会报错，重启可能会解决问题

我创建了一个静态的 Mapper 对象，然后在其它地方使用该对象，看起来似乎没问题，但是在外部容器启动时，项目偶尔会报错，而且错误会一直持续，只能重启，请帮忙看看是什么原因？这个问题很久之前就有，一直没有找到原因，看更新日志 1.0.3 版本貌似解决了，但是我更新后还是会报错……

private static final Mapper mapper = MapperFactory.getCopyByRefMapper().mapClass(Prospect.class, ProspectVo.class).register();
mapper.map(source, ProspectVo.class);

Caused by: com.baidu.unbiz.easymapper.exception.MappingException: No class map found for (String, String), make sure type or nested type is registered beforehand
	at com.baidu.unbiz.easymapper.CopyByRefMapper.map(CopyByRefMapper.java:157)
	at com.baidu.unbiz.easymapper.CopyByRefMapper.map(CopyByRefMapper.java:116)
	at com.baidu.unbiz.generated.EasyMapper_Prospect_TO_ProspectVo_Mapper63926513617948576$0.map(EasyMapper_Prospect_TO_ProspectVo_Mapper63926513617948576$0.java)
	at com.baidu.unbiz.easymapper.CopyByRefMapper.map(CopyByRefMapper.java:176)
	at com.baidu.unbiz.easymapper.CopyByRefMapper.map(CopyByRefMapper.java:116)
	at com.github.trang.copiers.mapper.MapperCopier.copy(MapperCopier.java:40)
	... 156 common frames omitted

好像不支持子类的映射？

Class A 和 Class B extend A的两个对象之间进行映射，好像不能直接用。this should not happen, probably the framework could not handle mapping correctly based on your bean

但我又不能直接写一个AtoBMapping的接口，因为Class B是javassist动态生成的类。

Does it support map Enum to primary type(int\byte) ?

I found it seem to be unable to do this ，and I thought it might be useful.Would you like to support this feature ?

If init failed, then all mapping in container wont work

The exception looks like:

2017-07-01 00:02:51.338 | ERROR in c.h.a.a.e.e.AbstractExceptionMapper.toResponse(25) [|Jetty-Server-67] els-ass-160 user_id= hulu_request_id=a3441bf4-2996-443c-a561-1a90dc2fdaef path=GET_deletion_uid - Generating mapping code failed for ClassMap([A]:DeletionUid, [B]:DeletionUidDto), this should not happen, probably the framework could not handle mapping correctly based on your bean [java]  [els-ass-160]
com.baidu.unbiz.easymapper.exception.MappingException: Generating mapping code failed for ClassMap([A]:DeletionUid, [B]:DeletionUidDto), this should not happen, probably the framework could not handle mapping correctly based on your bean [java]  [els-ass-160]
        at com.baidu.unbiz.easymapper.CopyByRefMapper.map(CopyByRefMapper.java:169) ~[app.jar:na] [java]  [els-ass-160]
        at com.baidu.unbiz.easymapper.CopyByRefMapper.map(CopyByRefMapper.java:116) ~[app.jar:na] [java]  [els-ass-160]
        at com.baidu.unbiz.easymapper.ClassMapBuilder.registerAndMap(ClassMapBuilder.java:241) ~[app.jar:na] [java]  [els-ass-160]
        at com.hulu.ap.meta.api.DeletionUidApi$1.apply(DeletionUidApi.java:119) ~[app.jar:na] [java]  [els-ass-160]
        at com.hulu.ap.meta.api.DeletionUidApi$1.apply(DeletionUidApi.java:115) ~[app.jar:na] [java]  [els-ass-160]
        at com.hulu.ap.meta.api.DeletionUidApi.getLatest(DeletionUidApi.java:80) ~[app.jar:na] [java]  [els-ass-160]

and it keeps occurring if the following exception happens when application startup.

2017-07-01 00:02:51.141 | ERROR in c.b.u.e.codegen.MappingCodeGenerator.build(79) [|Jetty-Server-67] els-ass-160 user_id= hulu_request_id=a3441bf4-2996-443c-a561-1a90dc2fdaef path=GET_deletion_uid - Generating mapping code with error: null [java]  [els-ass-160]
java.util.NoSuchElementException: null [java]  [els-ass-160]
        at sun.misc.CompoundEnumeration.nextElement(CompoundEnumeration.java:59) ~[na:1.8.0_92] [java]  [els-ass-160]
        at java.util.ServiceLoader$LazyIterator.hasNextService(ServiceLoader.java:357) ~[na:1.8.0_92] [java]  [els-ass-160]
        at java.util.ServiceLoader$LazyIterator.hasNext(ServiceLoader.java:393) ~[na:1.8.0_92] [java]  [els-ass-160]
        at java.util.ServiceLoader$1.hasNext(ServiceLoader.java:474) ~[na:1.8.0_92] [java]  [els-ass-160]
        at com.baidu.unbiz.easymapper.mapping.DefaultMappingStrategy.generateMappingCode(DefaultMappingStrategy.java:43) ~[app.jar:na] [java]  [els-ass-160]
        at com.baidu.unbiz.easymapper.codegen.MappingCodeGenerator.generateMappingCode(MappingCodeGenerator.java:141) ~[app.jar:na] [java]  [els-ass-160]
        at com.baidu.unbiz.easymapper.codegen.MappingCodeGenerator.addMapMethod(MappingCodeGenerator.java:106) ~[app.jar:na] [java]  [els-ass-160]
        at com.baidu.unbiz.easymapper.codegen.MappingCodeGenerator.build(MappingCodeGenerator.java:68) ~[app.jar:na] [java]  [els-ass-160]
        at com.baidu.unbiz.easymapper.CopyByRefMapper$2.compute(CopyByRefMapper.java:165) [app.jar:na] [java]  [els-ass-160]
        at com.baidu.unbiz.easymapper.CopyByRefMapper$2.compute(CopyByRefMapper.java:162) [app.jar:na] [java]  [els-ass-160]
        at com.baidu.unbiz.easymapper.util.Memoizer$1.call(Memoizer.java:67) [app.jar:na] [java]  [els-ass-160]
        at java.util.concurrent.FutureTask.run(FutureTask.java:266) [na:1.8.0_92] [java]  [els-ass-160]
        at com.baidu.unbiz.easymapper.util.Memoizer.compute(Memoizer.java:73) [app.jar:na] [java]  [els-ass-160]
        at com.baidu.unbiz.easymapper.CopyByRefMapper.map(CopyByRefMapper.java:160) [app.jar:na] [java]  [els-ass-160]

请问在多线程下，转换会出问题吗，我这里多线程下报了个异常..MappingCodeGenerationException

MappingCodeGenerationException: No appropriate mapping strategy found for FieldMap[closeState(Integer)-->closeState(Integer)]

现在还不支持Enum枚举类型吗

RT, 测试好像没效果, 文档也没提啊

What should I do if I want to copy `Array` and `Interface` ?

What should I do if I want to copy Array and Interface( like List ) ?
There is a low-level way to solve the second question. Hope you have a better one.

Mapper register = MapperFactory.getCopyByRefMapper().mapClass(UserForm.class, UserView.class)
                .field("persons", "persons", (List list) -> Lists.newArrayList(list))
                .register();
UserView view = register.map(form, UserView.class);

Mapper register = MapperFactory.getCopyByRefMapper().mapClass(UserForm.class, UserView.class)
                .field("persons", "persons", (List list) -> Lists.newArrayList(list))
                .register();
UserView view = register.map(form, UserView.class);

UserEntity target = MapperFactory.getCopyByRefMapper().mapClass(User.class, UserEntity.class).register()
                .map(source, UserEntity.class);
System.out.println(target);

User secondTarget = MapperFactory.getCopyByRefMapper().mapClass(UserEntity.class, User.class).register()
                .map(target, User.class);
System.out.println(secondTarget);

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