xQuery XML 标记字符串

Question

我是 xQuery 的新手，似乎无法使用以下命令：

<measInfo measInfoId="1542455297">
  <measTypes>1542455297 1542455298 1542455299 1542455300 1542455301 1542455302 1542455303 1542455304 1542455305 1542455306 1542455307 1542460296 1542460297 </measTypes>
  <measValue measObjLdn="LTHAB0113422/ETHPORT:Cabinet No.=0, Subrack No.=1, Slot No.=7, Port No.=0, Subboard Type=BASE_BOARD">
    <measResults>116967973 585560 496041572 682500 0 12583680 72080 520454 46670568 73432 2205837 1000000 1000000 </measResults>
  </measValue>
  <measValue measObjLdn="LTHAB0113422/ETHPORT:Cabinet No.=0, Subrack No.=1, Slot No.=7, Port No.=1, Subboard Type=BASE_BOARD">
    <measResults>0 0 0 0 0 0 0 0 0 0 0 0 0 </measResults>
  </measValue>
</measInfo>

我正在使用 //measInfo/measTypes/fn:tokenize(text(),'\s+')。我希望 return 每个 space 分隔值的记录，但是它 return 与 //measInfo/measTypes/text()

相同

我做错了什么？

Answer 1

在 XQuery 3.0（由 BaseX 实现）中，这实际上有效：

declare context item := document {
<measInfo measInfoId="1542455297">
<measTypes>1542455297 1542455298 1542455299 1542455300 1542455301 1542455302 1542455303 1542455304 1542455305 1542455306 1542455307 1542460296 1542460297 </measTypes>
<measValue measObjLdn="LTHAB0113422/ETHPORT:Cabinet No.=0, Subrack No.=1, Slot No.=7, Port No.=0, Subboard Type=BASE_BOARD">
    <measResults>116967973 585560 496041572 682500 0 12583680 72080 520454 46670568 73432 2205837 1000000 1000000 </measResults>
</measValue>
<measValue measObjLdn="LTHAB0113422/ETHPORT:Cabinet No.=0, Subrack No.=1, Slot No.=7, Port No.=1, Subboard Type=BASE_BOARD">
    <measResults>0 0 0 0 0 0 0 0 0 0 0 0 0 </measResults>
</measValue>
</measInfo>
};

for $item in //measInfo/measTypes/fn:tokenize(text(),'\s+')
return <item>{$item}</item>

...returns...

<item>1542455297</item>
<item>1542455298</item>
<item>1542455299</item>
<item>1542455300</item>
<item>1542455301</item>
<item>1542455302</item>
<item>1542455303</item>
<item>1542455304</item>
<item>1542455305</item>
<item>1542455306</item>
<item>1542455307</item>
<item>1542460296</item>
<item>1542460297</item>
<item/>

在每个结果周围放置 <item> 可确保这些结果的呈现使每个项目在视觉上截然不同 - 否则，您可以将每个结果呈现为一行文本，并且不会很明显reader 它们是否被 fn:tokenize() 分成多个项目。

另一种方法是注入文字换行符：

for $item in //measInfo/measTypes/fn:tokenize(text(),'\s+')
return ($item, "&#10;")

xQuery XML 标记字符串

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