1700484380
1700484381
//传递一个规格书
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1700484383
private ISpecification spec;
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1700484385
public NotSpecification(ISpecification_spec){
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1700484387
this.spec=_spec;
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1700484389
}
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1700484391
//not操作
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1700484393
@Override
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1700484395
public boolean isSatisfiedBy(Object candidate){
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1700484397
return!spec.isSatisfiedBy(candidate);
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1700484399
}
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1700484401
}
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1700484403
以上一个接口、一个抽象类、3个实现类只要在适用规格模式的地方都完全相同,不用做任何的修改,大家闭着眼照抄就成,要修改的是下面的规格书——业务规格书,如代码清单37-27所示。
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1700484405
代码清单37-27 业务规格书
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1700484407
public class BizSpecification extends CompositeSpecification{
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1700484409
//基准对象
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1700484411
private Object obj;
1700484412
1700484413
public BizSpecification(Object_obj){
1700484414
1700484415
this.obj=_obj;
1700484416
1700484417
}
1700484418
1700484419
@Override
1700484420
1700484421
public boolean isSatisfiedBy(Object candidate){
1700484422
1700484423
//根据基准对象和候选对象,进行业务判断,返回boolean
1700484424
1700484425
return false;
1700484426
1700484427
}
1700484428
1700484429
}
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