//
//获取产品类型和产品关联
Map<Long, List<ProductTypeRef>> parentIdChildrenMap = typeRefList.stream().filter(productTypeRef -> productTypeRef.getProductTypeId() != null).collect(Collectors.groupingBy(ProductTypeRef::getProductTypeId));
parentList.forEach(p -> {
//筛选第二级菜单
List<SortProductTypeVo> districtsOne = typeList.stream().filter(sortProductTypeVo -> sortProductTypeVo.getParentTypeId().equals(p.getId())).collect(Collectors.toList());
districtsOne.forEach(a -> {
//第三层菜单
List<SortProductTypeVo> districtsTwo = typeList.stream().filter(productType -> productType.getParentTypeId().equals(a.getId())).collect(Collectors.toList());
districtsTwo.stream().forEach(d -> {
//获取产品和产品类型之间的连接关系
List<ProductTypeRef> l = parentIdChildrenMap.getOrDefault(d.getId(), new ArrayList<>());
//排序产品关联就相当于产品排序
l.sort((q, b) -> Integer.compare(q.getDisplaySeq(), b.getDisplaySeq()));
//根据排序产品关联去找到产品
d.setProductList(l.stream().map(e -> {
ProductVo products = productList.get(e.getProductId());
if (null != products) products.setDisplaySeq(e.getDisplaySeq());
return products;
}).collect(Collectors.toList()).stream().filter(s -> s != null).collect(Collectors.toList()));//数组中过滤空的产品
// d.setProductTypeRefs(parentIdChildrenMap.getOrDefault(d.getId(), new ArrayList<>()));
});
List<ProductTypeRef> l = parentIdChildrenMap.getOrDefault(a.getId(), new ArrayList<>());
l.sort((q, b) -> Integer.compare(q.getDisplaySeq(), b.getDisplaySeq()));
a.setProductList(l.stream().map(c -> {
ProductVo products = productList.get(c.getProductId());
if (null != products) products.setDisplaySeq(c.getDisplaySeq());
return products;
}).collect(Collectors.toList()).stream().filter(s -> s != null).collect(Collectors.toList()));
districtsTwo.sort((q, b) -> Integer.compare(q.getDisplaySeq(), b.getDisplaySeq()));
a.setProductTypes(districtsTwo);
// a.setProductTypeRefs(parentIdChildrenMap.getOrDefault(a.getId(), new ArrayList<>()));
});
List<ProductTypeRef> l = parentIdChildrenMap.getOrDefault(p.getId(), new ArrayList<>());
l.sort((q, b) -> Integer.compare(q.getDisplaySeq(), b.getDisplaySeq()));
p.setProductList(l.stream().map(a -> {
ProductVo products = productList.get(a.getProductId());
if (null != products) products.setDisplaySeq(a.getDisplaySeq());
return products;
}).collect(Collectors.toList()).stream().filter(s -> s != null).collect(Collectors.toList()));
// p.setProductTypeRefs(parentIdChildrenMap.getOrDefault(p.getId(), new ArrayList<>()));
districtsOne.sort((q, b) -> Integer.compare(q.getDisplaySeq(), b.getDisplaySeq()));
