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CriteriaBuilder. How to filter a cascade in object

Time：10-26

CriteriaBuilder. How to filter in a cascade object?
CriteriaBuilder. In In=criteriaBuilder. In (root) get (" symbolType "). The as (SymbolCategoryType. Class));
SymbolTypeList. Steam. ForEach (symbolCategoryType - & gt; In the value (symbolCategoryType));
PredicateList. Add (in);
This will directly report errors

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