BoolQueryBuilder 深拷贝

BoolQueryBuilder里面的元素不多，直接取过来就可以了吧。
 
        BoolQueryBuilder b2 = new BoolQueryBuilder();
         b2.must().addAll(new ArrayList<>(b1.must()));
        b2.mustNot().addAll(new ArrayList<>(b1.mustNot()));
        b2.should().addAll(new ArrayList<>(b1.should()));
        b2.filter().addAll(new ArrayList<>(b1.filter()));
        b2.adjustPureNegative(b1.adjustPureNegative());
        b2.minimumShouldMatch(b1.minimumShouldMatch());

 public QueryBuilder copyQueryBuilder(QueryBuilder queryBuilder) throws IOException {

        SearchModule searchModule = new SearchModule(Settings.EMPTY, false, Collections.emptyList());

        XContentParser parser = XContentFactory.xContent(XContentType.JSON).createParser(

                new NamedXContentRegistry(searchModule.getNamedXContents()), LoggingDeprecationHandler.INSTANCE, queryBuilder.toString());



        return AbstractQueryBuilder.parseInnerQueryBuilder(parser);

    }

 
通过看代码，已经找到方式，可以这么搞