Question

此问题具有标量复杂属性，之前已报告并在微风1.3.5中得到解决。我仍然在微风1.4.5中看到非标量复杂属性。使用此元数据创建实体后，实体管理器上的exportEntities（）方法失败，JSON.stringify中出现异常，抱怨循环引用。

以下是一些复制问题的代码：

var jsonMetadata = {
  "metadataVersion": "1.0.5",
  "namingConvention": "camelCase",
  "localQueryComparisonOptions": "caseInsensitiveSQL",
  "dataServices": [{"serviceName": "breeze/myservice/"    }  ],
  "structuralTypes": [
    {
      "shortName": "Address",
      "namespace": "mynamespace",
      "isComplexType": true,
      "dataProperties": [
        {"name": "street"},
        {"name": "city"},
      ]
    },
    {
      "shortName": "Person",
      "namespace": "mynamespace",
      "autoGeneratedKeyType": "Identity",
      "defaultResourceName": "Person",
      "dataProperties": [
        {"name": "_id", "dataType": "MongoObjectId", "isNullable": false,     "defaultValue": "",
          "isPartOfKey": true },
        {"name": "displayName", "dataType": "String"},
        { "name": "addresses",
          "complexTypeName": "Address:#mynamespace",
          "isScalar": false
        }
      ]
    }
  ],
  "resourceEntityTypeMap": {
    "Person": "Person:#mynamespace"
  }};

var manager = new breeze.EntityManager();
manager.metadataStore.importMetadata(jsonMetadata);

var person = manager.createEntity('Person', {displayName: "Joe Bob"});
var myAddresses = person.getProperty('addresses');
var myAddressProp = manager.metadataStore.getEntityType("Address").createInstance(
    {street: "Main", city:"Pleasantville"});
myAddresses.push(myAddressProp);

console.log("Complex property is a circular datatype, cannot convert to JSON - that's fine")
//JSON.stringify(person.addresses); // fails with error

console.log("... except that manager.exportEntities() doesn't handle that case!");
var entities = manager.exportEntities(); // also fails

JSON.stringify抱怨的循环引用似乎位于Address属性的ComplexAspect的“parent”属性中。

另外，如果有一种更简单的方法来填充地址数组，我会感激一些帮助。

Answer 1

好的，这应该在Breeze v 1.4.6（或更高版本）现在可以修复

-------------原帖------------------

这是一个错误。它将在下一个版本中修复，本周晚些时候或下周初。并且...感谢repro。我会在它进入时回复。

Breeze.js - 非标量复杂属性在em.exportEntities期间导致循环结构异常

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