Question

我想创建一个函数（在名为Successfully started Solr ... rake aborted! Sunspot::Solr::Server::AlreadyRunningError: Server is already running with PID 38712的示例代码中），该函数接受任意结构并填充数据库查询中的值。请注意＆＃34;属性＆＃34; GremlinResultStruct中的键也是任意的（这就是为什么它是RAILS_ENV=test rake sunspot:solr:stop rake aborted! Sunspot::Solr::Server::NotRunningError: Process with PID 38926 is no longer running）

目标：
我希望gremlinResultToStruct()根据其密钥填充给定的结构，如果它们在数据库结果中可用的话。

为什么：
我的代码库中有数百个像Foo和Bar这样的结构体，我希望有一个函数来填充代码中所需的结构，而不是创建半重复的代码。

CODE：
我的代码看起来像这样，它还包含以下问题：

Properties map[string][]struct

示例JSON结果。

结果-A：

gremlinResultToStruct()

结果-B：

// Gremlin Query result struct
type GremlinResult struct {
    AtType  string `json:"@type"`
    AtValue []struct {
        AtType  string `json:"@type"`
        AtValue struct {
            ID struct {
                AtType  string `json:"@type"`
                AtValue int    `json:"@value"`
            } `json:"id"`
            Label      string `json:"label"`
            Properties map[string][]struct { // <== IMPORTANT, CONTAINS A VALUE THAT IS THE EQUIVALENT OF THE KEY IN THE STRUCT (like Something, SomethingElse, EvenMoreSomethingElse or AndMoreSomethingElse)
                AtType  string `json:"@type"`
                AtValue struct {
                    ID struct {
                        AtType  string `json:"@type"`
                        AtValue int    `json:"@value"`
                    } `json:"id"`
                    Label string `json:"label"`
                    Value string `json:"value"`
                } `json:"@value"`
            } `json:"@properties"`
        } `json:"@value"`
    } `json:"@value"`
}

type Foo struct {
    Something     string
    SomethingElse bool
}

type Bar struct {
    EvenMoreSomethingElse string
    AndMoreSomethingElse  int
}

func gremlinResultToStruct(result *GremlinResult, ???){ // What to do at ???
    // How to itterate over the ??? key values (like: Something, SomethingElse, EvenMoreSomethingElse or AndMoreSomethingElse)

    // How to populate:
    // VARIABLE := Something, SomethingElse, EvenMoreSomethingElse or AndMoreSomethingElse
    // result.AtValue[0].AtValue.Properties[ VARIABLE ][0].AtValue.Value
}

func main {

    // Do stuff to get JSON results. HOW is not relevant for question
    dbResults := doDbStuffToPopulateResuts()

    // Create the results variable as gremlinResults struct
    results := GremlinResult{}

    // Unmarshall to this struct
    err = json.Unmarshal(dbResults, &results)

    // 1. Expected result should be "result-a" (see below)

    // Create the Foo struct
    foo := Foo{}

    // HERE IS MY QUESTION ABOUT (see function above)
    gremlinResultToStruct(&results, &foo)

    // NOW foo SHOULD HAVE Something and SomethingElse set
    fmt.Println(foo.Something, foo.SomethingElse)

    // 2. Expected result should be "result-b" (see below)

    // Create the Bar struct
    bar := Bar{}

    // HERE IS MY QUESTION ABOUT (see function above)
    gremlinResultToStruct(&results, &bar)

    // NOW foo SHOULD HAVE Something and SomethingElse set
    fmt.Println(bar.EvenMoreSomethingElse, bar.AndMoreSomethingElse)    

}

如何在Go中填充任意结构？

0 个答案: