在 Azure 逻辑应用程序中筛选数组

Question

这看起来应该是直截了当的，但事实并非如此，这表明我还没有理解某些东西。
我有一个简单的数组变量，其内容如下。我想对其进行过滤，以便我只看到政策为 X 的项目，以便我可以获得文档元素的值。

我试过：

• filter @variables('myArray') where @equals('policy','X')
• @contains('policy','X')
• filter @variables('myArray') where @contains(@variables('myArray'),'X'

在每种情况下，数组都进入过滤器数组操作并完全留空。非常感谢收到任何帮助。

[

  {
    "document": "A",
    "min": 7500001,
    "policy": "X"
  },

  {
    "document": "B",
    "min": 7500001,
    "policy": "Y"
  },

  {
    "document": "C",
    "min": 7500001,
    "policy": "Z"
  }

]

Answer 1

您可以在过滤数组之前使用Parse JSON。考虑到您提供的示例，我们已经在我们的逻辑应用程序中对其进行了测试，并且可以正常工作。这是我的逻辑应用程序的屏幕截图供您参考：

结果：

考虑数组的另一个样本

[
  {
    "document": "A",
    "min": 7500001,
    "policy": "X"
  },
  {
    "document": "B",
    "min": 7500001,
    "policy": "Y"
  },
  {
    "document": "C",
    "min": 7500001,
    "policy": "Z"
  },
{
    "document": "D",
    "min": 7500002,
    "policy": "X"
  }
]

结果：

下面是我的逻辑应用程序的代码视图

{
    "definition": {
        "$schema": "https://schema.management.azure.com/providers/Microsoft.Logic/schemas/2016-06-01/workflowdefinition.json#",
        "actions": {
            "Filter_array_2": {
                "inputs": {
                    "from": "@body('Parse_JSON')",
                    "where": "@equals(item()['policy'], 'X')"
                },
                "runAfter": {
                    "Parse_JSON": [
                        "Succeeded"
                    ]
                },
                "type": "Query"
            },
            "Initialize_variable": {
                "inputs": {
                    "variables": [
                        {
                            "name": "SampleArray1",
                            "type": "array",
                            "value": [
                                {
                                    "document": "A",
                                    "min": 7500001,
                                    "policy": "X"
                                },
                                {
                                    "document": "B",
                                    "min": 7500001,
                                    "policy": "Y"
                                },
                                {
                                    "document": "C",
                                    "min": 7500001,
                                    "policy": "Z"
                                }
                            ]
                        }
                    ]
                },
                "runAfter": {},
                "type": "InitializeVariable"
            },
            "Parse_JSON": {
                "inputs": {
                    "content": "@variables('SampleArray1')",
                    "schema": {
                        "items": {
                            "properties": {
                                "document": {
                                    "type": "string"
                                },
                                "min": {
                                    "type": "integer"
                                },
                                "policy": {
                                    "type": "string"
                                }
                            },
                            "required": [
                                "document",
                                "min",
                                "policy"
                            ],
                            "type": "object"
                        },
                        "type": "array"
                    }
                },
                "runAfter": {
                    "Initialize_variable": [
                        "Succeeded"
                    ]
                },
                "type": "ParseJson"
            }
        },
        "contentVersion": "1.0.0.0",
        "outputs": {},
        "parameters": {},
        "triggers": {
            "manual": {
                "inputs": {
                    "schema": {}
                },
                "kind": "Http",
                "type": "Request"
            }
        }
    },
    "parameters": {}
}