红帽全球峰会229.6.3. 删除操作
229.6.3.1. remove
从集合中删除匹配的记录。IN 消息正文将充当删除的过滤器查询，且应该类型为 DBObject，也可以是可以被转换的。
以下示例将删除其字段"conditionField"等于 true 的所有对象，它们位于科学数据库中，无法实现：
// route: from("direct:remove").to("mongodb3:myDb?database=science&collection=notableScientists&operation=remove");
Bson conditionField = Filters.eq("conditionField", true);
Object result = template.requestBody("direct:remove", conditionField);
// route: from("direct:remove").to("mongodb3:myDb?database=science&collection=notableScientists&operation=remove");
Bson conditionField = Filters.eq("conditionField", true);
Object result = template.requestBody("direct:remove", conditionField);
返回一个带有密钥 CamelMongoDbRecords affected 的标头(MgoDbConstants.RECORDS_AFFECTED constant)类型 int，其中包含已删除的记录数（从 WriteResult.getN （）开始）。
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