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我有如下输入请求

 <Input>
    <BusinessObjects>
          <BusinessObject>
            <BusinessIdentifiers>
              <BusinessIdentifier>
                <BKey>BuCode</BKey>
                <BValue>CDC</BValue>
              </BusinessIdentifier>
              <BusinessIdentifier>
                <BKey>BuType</BKey>
                <BValue>123</BValue>
              </BusinessIdentifier>
              <BusinessIdentifier>
                <BKey>CsmNo</BKey>
                <BValue>857895</BValue>
              </BusinessIdentifier>
            </BusinessIdentifiers>
           </BusinessObject>
          <BusinessObject>
            <BusinessIdentifiers>
              <BusinessIdentifier>
                <BKey>BuCode</BKey>
                <BValue>CDC</BValue>
              </BusinessIdentifier>
              <BusinessIdentifier>
                <BKey>BuType</BKey>
                <BValue>123</BValue>
              </BusinessIdentifier>
              <BusinessIdentifier>
                <BKey>CsmNo</BKey>
                <BValue>34567</BValue>
              </BusinessIdentifier>
            </BusinessIdentifiers>
            </BusinessObject>      
        </BusinessObjects>
        </Input>

我需要形成如下模式的输出

<Output>
<BusinessObject>
<BIKey></BIKey>
<BKey></BIKey>
<Bvalue></Bvalue>
<BOID></BOID>
</BusinessObject>
</Output>

对于上面的payload，输出应该是

  <Output>
    <BusinessObjects>
    <BusinessObject>
    <BIKey>CDC:123:857895|CDC:123:34567</BIKey>
    <BKey>BUCode</BKey>
    <Bvalue>CDC</Bvalue>
    <BOID>CDC:123:857895</BOID>
    </BusinessObject>
    <BusinessObject>
    <BIKey>CDC:123:857895|CDC:123:34567</BIKey>
    <BKey>BUtype</BKey>
    <Bvalue>123</Bvalue>
    <BOID>CDC:123:857895</BOID>
    </BusinessObject>
    <BusinessObject>
    <BIKey>CDC:123:857895|CDC:123:34567</BIKey>
    <BKey>CSMNo</BKey>
    <Bvalue>857895</Bvalue>
    <BOID>CDC:123:857895</BOID>
    </BusinessObject>
    <BusinessObject>
    <BIKey>CDC:123:857895|CDC:123:34567</BIKey>
    <BKey>BUCode</BKey>
    <Bvalue>CDC</Bvalue>
    <BOID>CDC:123:34567</BOID>
    </BusinessObject>
    <BusinessObject>
    <BIKey>CDC:123:857895|CDC:123:34567</BIKey>
    <BKey>BUtype</BKey>
    <Bvalue>123</Bvalue>
    <BOID>CDC:123:34567</BOID>
    </BusinessObject>
    <BusinessObject>
    <BIKey>CDC:123:857895|CDC:123:34567</BIKey>
    <BKey>CSMNo</BKey>
    <Bvalue>857895</Bvalue>
    <BOID>CDC:123:34567</BOID>
    </BusinessObject>
    </BusinessObjects>
    </Output>

我已经尝试在 Xquery 下面得到相同的结果，但最终出现错误或不符合要求

<Ouput>
<BusinessObjects>
{
for $bi in Input/BusinessObjects/BusinessObject/BusinessIdentifiers/BusinessIdentifier
return
<BIKey>
    {
        string-join(
            for $bo in Input/BusinessObjects/BusinessObject return string-join($bo/BusinessIdentifiers/BusinessIdentifier/BValue, '|'),
            ':'
        )
    }
    </BIKey>
    <BKey>data {$bi/Bkey}</BKey>
    <Bvalue>data {$bi/Bvalue}</Bvalue>
    for $bo in Input/BusinessObjects/BusinessObject return <BOID>{string-join($bo//BValue, ':')}<BOID>

}
</BusinessObjects>
</Ouput>

输出字段的描述如下 BIKey——>它由“业务标识符”的所有 B 值与“：”连接，然后对于每个业务对象，它用“|”分隔 Bkey--> 使用 bkey 进行 Bvalue直接映射 --> 使用 Bvalue 进行直接映射 BOID--> 它必须为每个业务对象形成，需要将业务标识符的值 Bvalue 与 ':' 连接起来 任何建议，我相信我必须进行两个复杂的循环在这里，但无法破解它。

感谢@Martin，因为他帮助我使用' ancestor'轴破解了这个问题，但有些 eclispe 没有识别' ancestor'。

谢谢

4

1 回答 1

0

所有输出的 BIKey 都是相同的，因此我们可以在任何循环之外计算它并完成它。为此，我们将 BusinessObject 的所有 BValue 与 连接起来:，并将每个 BusinessObject 的结果与 连接起来|：

let $BIKey := string-join(for $bo in /Input/BusinessObjects/BusinessObject return string-join($bo/BusinessIdentifiers/BusinessIdentifier/BValue, ':'), '|')

BOID 将取决于我们正在处理的 BusinessObject，因此我们需要遍历它们，然后我们可以在该点提取 BOID：

let $BIKEY := [...]
for $bo in /Input/BusinessObjects/BusinessObject
  let $BOID := string-join($bo/BusinessIdentifiers/BusinessIdentifier/BValue, ':')

其余的输出字段取决于 BusinessIdentifier，所以让我们也循环这些字段并为每个 BusinessIdentifier 返回一个 BusinessObject：

let $BIKEY := [...]
for $bo in [...]
  let $BOID :=  [...]
  return for $bi in $bo/BusinessIdentifiers/BusinessIdentifier/
    return <BusinessObject>
             <BIKey>{$BIKEY}</BIKey>
             <BKey>{$bi/BKey}</BKey>
             <Bvalue>{$bi/Value}</Bvalue>
             <BOID>{$BOID}</BOID>
           </BusinessObject>

现在我们只需要将这些输出 BusinessObjects 包装到它们的父标签中：

<output><BusinessObjects>{
let $BIKEY := string-join(for $bo in /Input/BusinessObjects/BusinessObject return string-join($bo/BusinessIdentifiers/BusinessIdentifier/BValue, ':'), '|')
for $bo in /Input/BusinessObjects/BusinessObject
  let $BOID := string-join($bo/BusinessIdentifiers/BusinessIdentifier/BValue, ':')
  return
    for $bi in $bo/BusinessIdentifiers/BusinessIdentifier
    return <BusinessObject>
<BIKey>{$BIKEY}</BIKey>
<BKey>{$bi/BKey/text()}</BKey>
<Bvalue>{$bi/BValue/text()}</Bvalue>
<BOID>{$BOID}</BOID>
</BusinessObject>
}</BusinessObjects></output>

你可以在这里测试它。

于 2018-12-04T14:59:03.517 回答