BreezeJS谓词在第二级扩展实体上 [英] BreezeJS Predicates on 2nd level expanded entities

问题描述

对此问题提出了类似的问题：
微风的解决方法，用于多值属性查询

A similar question has been asked on this matter: Breeze work-around for multi valued property queries

嗯，它适用于一对多。
，即父实体可能有一个孩子，而这个孩子又有许多孩子。

Well, that works for one-one-many. i.e parent entity may have one child which in turn has many children.

我的情况是：一个产品有很多单位，一个特定的单位有很多条形码。

My scenario is : A product has many units, a particular unit has many barcodes.

var predicateBarcode = Predicate.create('units.barcodes','any','barcode', 'eq', searchText());

 var query = EntityQuery.from('Products')
             .expand('units.barcodes')
             // .take(10)
             .where(predicateBarcode );
            return manager.executeQuery(query)
                .then(querySucceeded)
                .fail(queryFailed);

执行查询会出现错误：

The parent value for a property access of a property 'barcodes' is not a single value. Property access can only be applied to a single value.

我将谓词更改为：

var predicateBarcode = Predicate.create('units','any','barcodes','any','barcode', 'eq', searchText());

这会产生另一个错误：

The Any/All nesting limit of '1' has been exceeded. 'MaxAnyAllExpressionDepth' can be configured on ODataQuerySettings or QueryableAttribute

上配置 MaxAnyAllExpressionDepth。感谢
帮助。

Is there any way around this? Help is appreciated.

推荐答案

给出谓词：

var predicateBarcode = Predicate.create('units','any','barcodes','any','barcode', 'eq', searchText());

我在我的属性中添加了 MaxAnyAllExpressionDepth 属性微风控制器：

I have added the MaxAnyAllExpressionDepthproperty to my breeze controller :

[BreezeController(MaxAnyAllExpressionDepth = 2)]

感谢@lnu ..

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