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我有以下 XML：

<doc>
<ActivityNarrativeInformation>
  <ActivityID>123456789</ActivityID>
  <ActivityNarrativeInformationID>111111111</ActivityNarrativeInformationID>
  <ActivityNarrativeSequenceNumber>1</ActivityNarrativeSequenceNumber>
  <ActivityNarrativeText>She Sells Sea Shells by the Sea Shore and she also</ActivityNarrativeText>
  </ActivityNarrativeInformation>
 <ActivityNarrativeInformation>
  <ActivityID>123456789</ActivityID>
  <ActivityNarrativeInformationID>111111111</ActivityNarrativeInformationID>
  <ActivityNarrativeSequenceNumber>3</ActivityNarrativeSequenceNumber>
  <ActivityNarrativeText>triple shot frappuccino, extra hot, with whipped cream in a tall cup </ActivityNarrativeText>
</ActivityNarrativeInformation>
<ActivityNarrativeInformation>
  <ActivityID>123456789</ActivityID>
  <ActivityNarrativeInformationID>111111111</ActivityNarrativeInformationID>
  <ActivityNarrativeSequenceNumber>2</ActivityNarrativeSequenceNumber>
  <ActivityNarrativeText>likes to take long walks on the beach while she drinks a</ActivityNarrativeText>
  </ActivityNarrativeInformation>
<ActivityNarrativeInformation>
  <ActivityID>987654321</ActivityID>
  <ActivityNarrativeInformationID>222222222</ActivityNarrativeInformationID>
  <ActivityNarrativeSequenceNumber>486</ActivityNarrativeSequenceNumber>
  <ActivityNarrativeText>It was a dark and stormy night; the rain fell in torrents--except at occasional intervals, when
 </ActivityNarrativeText>
</ActivityNarrativeInformation>
<ActivityNarrativeInformation>
  <ActivityID>987654321</ActivityID>
  <ActivityNarrativeInformationID>222222222</ActivityNarrativeInformationID>
  <ActivityNarrativeSequenceNumber>488</ActivityNarrativeSequenceNumber>
  <ActivityNarrativeText>scene lies), rattling along the housetops, and fiercely agitating the scanty flame of the lamps that
</ActivityNarrativeText>
</ActivityNarrativeInformation>
<ActivityNarrativeInformation>
  <ActivityID>987654321</ActivityID>
  <ActivityNarrativeInformationID>222222222</ActivityNarrativeInformationID>
  <ActivityNarrativeSequenceNumber>487</ActivityNarrativeSequenceNumber>
  <ActivityNarrativeText>was checked by a violent gust of wind which swept up the streets (for it is in London that our
</ActivityNarrativeText>
</ActivityNarrativeInformation>
<ActivityNarrativeInformation>
  <ActivityID>987654321</ActivityID>
  <ActivityNarrativeInformationID>222222222</ActivityNarrativeInformationID>
  <ActivityNarrativeSequenceNumber>489</ActivityNarrativeSequenceNumber>
  <ActivityNarrativeText>struggled against the darkness.
</ActivityNarrativeText>
</ActivityNarrativeInformation>
<ActivityNarrativeInformation>
  <ActivityID>55555555</ActivityID>
  <ActivityNarrativeInformationID>77777777</ActivityNarrativeInformationID>
  <ActivityNarrativeSequenceNumber>31921</ActivityNarrativeSequenceNumber>
  <ActivityNarrativeText>Papa Bear was very big and growly. Mamma Bear was middle-sized and pleasant.
</ActivityNarrativeText>
</ActivityNarrativeInformation>
<ActivityNarrativeInformation>
  <ActivityID>55555555</ActivityID>
  <ActivityNarrativeInformationID>77777777</ActivityNarrativeInformationID>
  <ActivityNarrativeSequenceNumber>31923</ActivityNarrativeSequenceNumber>
  <ActivityNarrativeText>Papa bear loved to fix things around the house; Mama bear loved to grow flowers in her garden; and, Baby bear loved playing in the yard. They were very happy. </ActivityNarrativeText>
</ActivityNarrativeInformation>
<ActivityNarrativeInformation>
  <ActivityID>55555555</ActivityID>
  <ActivityNarrativeInformationID>77777777</ActivityNarrativeInformationID>
  <ActivityNarrativeSequenceNumber>31920</ActivityNarrativeSequenceNumber>
  <ActivityNarrativeText>Once upon a time there were three bears, Papa Bear, Mamma Bear and Baby Bear
</ActivityNarrativeText>
</ActivityNarrativeInformation>
<ActivityNarrativeInformation>
  <ActivityID>55555555</ActivityID>
  <ActivityNarrativeInformationID>77777777</ActivityNarrativeInformationID>
  <ActivityNarrativeSequenceNumber>31922</ActivityNarrativeSequenceNumber>
  <ActivityNarrativeText>And Baby Bear, well, he was small, and
sometimes he squeaked! They lived in a pretty little house on the edge of the forest
</ActivityNarrativeText>
</ActivityNarrativeInformation>
</doc

我需要对 ActivityNarrativeInformation 元素进行分组ActivityID并ActivityNarrativeText以这样的方式连接，它按以下方式排序ActivityNarrativeSequenceNumber

我设法使用以下 XPath 查询（XPath 3.1）对元素进行排序 sort(//ActivityNarrativeInformation[ActivityID=123456789], (), function($ActivityNarrativeSequenceNumber) {$ActivityNarrativeSequenceNumber})

所以结果看起来像这样：

<ActivityNarrativeInformation>
  <ActivityID>123456789</ActivityID>
  <ActivityNarrativeInformationID>111111111</ActivityNarrativeInformationID>
  <ActivityNarrativeSequenceNumber>1</ActivityNarrativeSequenceNumber>
  <ActivityNarrativeText>She Sells Sea Shells by the Sea Shore and she also</ActivityNarrativeText>
  </ActivityNarrativeInformation>
<ActivityNarrativeInformation>
  <ActivityID>123456789</ActivityID>
  <ActivityNarrativeInformationID>111111111</ActivityNarrativeInformationID>
  <ActivityNarrativeSequenceNumber>2</ActivityNarrativeSequenceNumber>
  <ActivityNarrativeText>likes to take long walks on the beach while she drinks a</ActivityNarrativeText>
  </ActivityNarrativeInformation>
<ActivityNarrativeInformation>
  <ActivityID>123456789</ActivityID>
  <ActivityNarrativeInformationID>111111111</ActivityNarrativeInformationID>
  <ActivityNarrativeSequenceNumber>3</ActivityNarrativeSequenceNumber>
  <ActivityNarrativeText>triple shot frappuccino, extra hot, with whipped cream in a tall cup </ActivityNarrativeText>
</ActivityNarrativeInformation>

然而，问题是，如果我想ActivityNarrativeText通过在最后添加/ActivityNarrativeText这样的

sort(//ActivityNarrativeInformation[ActivityID=123456789], (), function($ActivityNarrativeSequenceNumber) {$ActivityNarrativeSequenceNumber})/ActivityNarrativeText

或者

sort(//ActivityNarrativeInformation[ActivityID=123456789]/ActivityNarrativeText, (), function($seq) {$seq/ActivityNarrativeSequenceNumber})

订单丢失：

<ActivityNarrativeText>She Sells Sea Shells by the Sea Shore and she also</ActivityNarrativeText>
<ActivityNarrativeText>triple shot frappuccino, extra hot, with whipped cream in a tall cup </ActivityNarrativeText>
<ActivityNarrativeText>likes to take long walks on the beach while she drinks a</ActivityNarrativeText>

我究竟做错了什么？

4

4 回答 4

2

写入时您会丢失顺序，它会以与输入文件中相同的顺序/ActivityNarrativeText返回<ActivityNarrativeText>

/something带节点不仅仅意味着将其映射到孩子。

它的意思是

  • 映射它

  • 将所有节点重新排序为输入文档顺序

  • 删除重复项

你可以使用!ActivityNarrativeText

于 2021-07-04T16:59:26.170 回答
1

在这里测试它：videlibri.de/cgi-bin/xidelcgi

如果您使用的是，请添加它的标签。也许用于 Windows，或者用于 Unix。

我不太确定这可以用 XPath 完成。我相信您最好使用 XQuery。

对于与您的叙述，<ActivityID>123456789</ActivityID>您可以这样做：

$ xidel -s input.xml --xquery '
  normalize-space(
    for $x in //ActivityNarrativeInformation
    where $x/ActivityID = 123456789
    order by $x/ActivityNarrativeSequenceNumber
    return
    $x/ActivityNarrativeText
  )
'

对于所有叙述，我建议：

$ xidel -s input.xml --xquery '
  for $narrative at $i in //ActivityNarrativeInformation
  group by $id:=$narrative/ActivityID
  count $i
  return (
    $i,
    normalize-space(
      for $seq in $narrative
      order by $seq/ActivityNarrativeSequenceNumber
      return
      $seq/ActivityNarrativeText
    )
  )
'
1
Once upon a time there were three bears, [...]
2
She Sells Sea Shells by the Sea Shore and [...]
3
It was a dark and stormy night; the rain [...]

先分组<ActivityID>，然后在另一个 for 循环中按顺序排列句子<ActivityNarrativeSequenceNumber>。

2021-07-05 更新；我忘记了 XPath 的!. 在这种情况下，一个 for 循环就足够了：

$ xidel -s input.xml --xquery '
  for $narrative at $i in //ActivityNarrativeInformation
  order by $narrative/ActivityNarrativeSequenceNumber
  group by $id:=$narrative/ActivityID
  count $i
  return (
    $i,
    normalize-space($narrative ! ActivityNarrativeText)
  )
'
于 2021-07-04T11:53:24.547 回答
1

除了/在排序后不使用的正确答案之外，!如果您的排序函数参数选择正确的元素作为排序键，您的尝试之一实际上会起作用：

sort(//ActivityNarrativeInformation[ActivityID=123456789]/ActivityNarrativeText, (), function($text) {$text/../ActivityNarrativeSequenceNumber})
于 2021-07-04T21:25:40.547 回答
1

如果您想要做的是从您的示例 xml 中提取一个 coherenet 语句ActivityID，则此表达式

string-join(sort(//ActivityNarrativeInformation[ActivityID=123456789]/ActivityNarrativeText/concat(normalize-space()," "), (), function($ActivityNarrativeSequenceNumber) {$ActivityNarrativeSequenceNumber}))

应该输出

She Sells Sea Shells by the Sea Shore and she also likes to take long walks on the beach while she drinks a triple shot frappuccino, extra hot, with whipped cream in a tall cup
于 2021-07-03T15:44:25.413 回答