过滤java8中的布尔值

Question

我在编写以下代码时遇到了一个问题，我想根据其中一个属性的布尔值过滤一部分。但是当我试图写

时，我得到了错误在将其添加到数据库之前，我试图检查的对象是esn的活动标志。但我得到编译错误。我做错了什么

我要过滤的对象是

unarchiveParts:::::[Part(partId=20001582, partNumber=2411M39P02, partDescription=BEARING, NO 3 BALL, esn=Esn(esnId=2233, name=892292, active=true, workOrder=WorkOrder(workOrderId=2313, number=000010149107, tenant=Tenant(tenantId=1, name=GE Aviation)), gate=Gate(gateId=1, name=Gate 0, active=true, tenant=Tenant(tenantId=1, name=GE Aviation)), model=Model(modelId=48, name=CFM56-7, label=CFM56-7, engineFamily=EngineFamily(engineFamilyId=13, name=CFM56, label=CFM56, site=com.ge.digital.oa.moa.domain.Site@75bb5a71, otrOffset=0, tenant=Tenant(tenantId=1, name=GE Aviation)), tenant=Tenant(tenantId=1, name=GE Aviation)), customer=com.ge.digital.oa.moa.domain.Customer@6c348019, isQpEngine=true, tenant=Tenant(tenantId=1, name=GE Aviation), workScope=WorkScope(workScopeId=0, name=Unknown, ooa_label=UNK), visitIndex=0), quantity=1/1, status=Status(statusId=0, name=N/A, tenant=Tenant(tenantId=1, name=GE Aviation)), materialStream=MaterialStream(materialStreamId=2, name=Used, tenant=Tenant(tenantId=1, name=GE Aviation)), source=Source(sourceId=24, name=Celma, tenant=Tenant(tenantId=1, name=GE Aviation)), oem=null, poNumber=N/A, manualCsoCommit=null, autoCsoCommit=null, drStatus=null, airwayBill=null, coreMaterial=true, active=true, tenant=Tenant(tenantId=1, name=GE Aviation), module=null, hpcStatus=null, actionUsers=[], shipOut=null, receipt=null, critShip=false, lateCall=false, exEsn=null, accumOffset=0, poLineNum=00000)]

我已经写了，它给出了编译错误是

public void unarchiveParts(final List<Integer> partIDs) {       
List<Part> parts = partRepo.findAll((root, query, builder) -> root.get("partId").in(partIDs));
log.debug("unarchiveParts:::::"+ parts.toString());
parts.stream().filter(e -> e.getEsn().getActive() == Boolean.TRUE)
.forEach(p -> p.setActive(true));
partRepo.saveAll(parts);
}

Answer 1

Interface List没有方法过滤器。我认为你想做这件事:

public void unarchiveParts(final List<Integer> partIDs) {       
List<Part> parts = partRepo.findAll((root, query, builder) -> root.get("partId").in(partIDs));
log.debug("unarchiveParts:::::"+ parts.toString());
parts.stream()
.filter(e -> e.getEsn.getActive)
.forEach(p -> p.setActive(true));
partRepo.saveAll(parts);
}