XQuery嵌套循环 [英] XQuery Nested For Loop
本文介绍了XQuery嵌套循环的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
< user_manual document-type =IUts-cover =Language Part altts-lang = - ts-multi =语言部分章节ts-overview = - metadata1 =9211brand =Boschmaterial-number =dummy_9000727237vib = RW404960language-codes =de，enproduction-date =2012-12-03layout-type = - id =SL9761901>
< embed-language_part id =SL14686180>
< language_part id =ecls_bio_becls_a3_a14686169.SL9761756.7role = - lang =de>
< embed-user_manual_part id =ecls_bio_becls_a3_a14686169.SL14686446.10>
<？ecls-start-embedded-resource resource =ecls_bio_becls_a3_a17144756？>
< user_manual_part id =ecls_bio_becls_a3_a17144756.SL9765760.11role = - document-type =IU>
< embed-chapter id =ecls_bio_becls_a3_a17144756.SL9762101.13>
<？ecls-start-embedded-resource resource =ecls_bio_becls_a3_a30660983？>
<？ecls-start-embedded-resource resource =ecls_bio_becls_a3_a611713？>
< title_module id =ecls_bio_becls_a3_a611713.SL873735.16role = - >
< title id =ecls_bio_becls_a3_a611713.SL873736.17> Sicherheits- und Warnhinweise< / title>
< / title_module>
<？ecls-end-embedded-resource resource =ecls_bio_becls_a3_a611713？>
< / embed-title_module>
< embed-section id =ecls_bio_becls_a3_a30660983.SL10400094.18>
<？ecls-start-embedded-resource resource =ecls_bio_becls_a3_a11752692？>
< section id =ecls_bio_becls_a3_a11752692.SL1742298.19footrowtitle =norole = - toctitle =yes>
<？Pub Caret1？>
< embed-title_module id =ecls_bio_becls_a3_a11752692.SL1742291.20>
<？ecls-start-embedded-resource resource =ecls_bio_becls_a3_a16181733？>
< title_module id =ecls_bio_becls_a3_a16181733.SL984238.21role = - >
< title id =ecls_bio_becls_a3_a16181733.SL984239.22> Betrieb nehmen的Bevor Sie das Gerat< / title>
< para id =ecls_bio_becls_a3_a16181733.SL984240.23> Lesen Sie Gebrauchs- und Montageanleitung aufmerksam durch！ Sie enthalten wichtige InformationenÖberAufstellen，Gebrauch und Wartung desGerütes。< / para>
< para id =ecls_bio_becls_a3_a16181733.SL984241.24> Der Hersteller haftet nicht，wenn die die Hinweise und Warnungen der Gebrauchsanleitung missachten。 Bewahren Sie alle Unterlagenf rsp terenGebrauch oderf rNachbesitzer auf。< / para>
< / title_module>
<？ecls-end-embedded-resource resource =ecls_bio_becls_a3_a16181733？>
< / embed-title_module>
< / section>
<？Pub * 0000000275？>
<？ecls-end-embedded-resource resource =ecls_bio_becls_a3_a11752692？>
< / embed-section>
< / chapter>
< / embed-chapter>
< / user_manual_part>
< / embed-user_manual_part>
< / language_part>
< / embed-language_part>
< / user_manual>
我想使用XQuery语言，但是对于这种查询语言我真的很陌生。
我需要的基础设施是这样的：我想获得章节和章节的标题，例如：
这一章就像是在这个xml文件中：
< chapter id =ecls_bio_becls_a3_a30660983.SL2300626.14role = - toctitle =yesfootrowtitle =notype =security>
< embed-title_module id =ecls_bio_becls_a3_a30660983.SL2361816.15>
<？ecls-start-embedded-resource resource =ecls_bio_becls_a3_a611713？>
< title_module id =ecls_bio_becls_a3_a611713.SL873735.16role = - >
< title id =ecls_bio_becls_a3_a611713.SL873736.17> Sicherheits- und Warnhinweise< / title>
...
在这个例子中，Sicherheits-ind Warnhinweise是章节元素的标题。章节可以有很多部分，在我们的例子中，标题是：
< section id =ecls_bio_becls_a3_a11752692.SL1742298.19footrowtitle =norole = - toctitle =yes>
<？Pub Caret1？>
< embed-title_module id =ecls_bio_becls_a3_a11752692.SL1742291.20>
<？ecls-start-embedded-resource resource =ecls_bio_becls_a3_a16181733？>
< title_module id =ecls_bio_becls_a3_a16181733.SL984238.21role = - >
< title id =ecls_bio_becls_a3_a16181733.SL984239.22> Betrieb nehmen的Bevor Sie das Gerat< / title>
...
Betrieb nehmen的Bevor Sie das Gerat
预期结构：
< chapter> title：Chapter's title
< section> title：First section's title< / section>
< section>标题：第二部分的标题< / section>
< / chapter>
对于这个例子，章节只有一个部分，但是我只是配置了一个来达到我的文件的解决方案，它是最可读的配置，我猜... ...
我试过下面的xquery查询：
$ doc / user_manual / embed-language_part / language_part / embed-user_manual_part / user_manual_part中的< chapter
let $ doc：= doc（Test.xml）
/ embed-chapter / chapter
let $ chapter_title：= $ chapter / embed-title_module / title_module / title $ b $ for $ section in $ chapter / embed-section / section
return< chapter> title：{data（$ chapter_title）}< section>标题：{数据（$部/嵌入-title_module / title_module /标题）}< /节>< /章节>
带有两个嵌套循环，但是这个代码使得我的结构像：
< chapter> title：Chapter's title< section>First section's title< / section>< / chapter>
< chapter> title：Chapter's title< section>Second section's title< / section>< / chapter>
问题在于循环，但是当我尝试编辑这样的代码时：
$ b $ $ doc / user_manual / embed-language_part / language_part / embed$
let $ doc：= doc（assemble.xml）
-user_manual_part / user_manual_part / embed-chapter / chapter
let $ chapter_title：= $ chapter / embed-title_module / title_module / title
< chapter> title：{data（$ chapter_title）} {
for $ section in $ chapter / embed-section / section
return< section>标题：{数据（$部/嵌入-title_module / title_module /标题）}< /节>
}< / chapter>
我只想把标签放在第一个循环的标签中，之后我将添加部分元素查询。但是，上面的命令是不符合我的期望。
所以我需要你的建议，以正确地得到这些结构。先谢谢你。我希望我清楚地告诉你们所有人。假设文件名为assemble.xml。
解决方案
< chapters> {
let $ doc：= doc（assemble.xml）
for $ chapter in $ doc / user_manual / embed-language_part / language_part / embed-user_manual_part / user_manual_part / embed-chapter / chapter
返回
< chapter>
title：$ chapter $ embed-section / section
$ b $ return $ lt; section> ; title：{data（$ section / embed-title_module / title_module / title）}< / section>
}
< / chapter>
}< / chapter>
我在互联网上搜索，发现如何进行内部循环操作。下面的代码完全符合我的期望。
I've a sample xml file such as :
<user_manual document-type="IU" ts-cover="Language Part alt" ts-lang="-" ts-multi="Language Part, Chapter" ts-overview="-" metadata1="9211" brand="Bosch" material-number="dummy_9000727237" vib="RW404960" language-codes="de, en" production-date="2012-12-03" layout-type="-" id="SL9761901">
<embed-language_part id="SL14686180">
<language_part id="ecls_bio_becls_a3_a14686169.SL9761756.7" role="-" lang="de">
<embed-user_manual_part id="ecls_bio_becls_a3_a14686169.SL14686446.10">
<?ecls-start-embedded-resource resource="ecls_bio_becls_a3_a17144756"?>
<user_manual_part id="ecls_bio_becls_a3_a17144756.SL9765760.11" role="-" document-type="IU">
<embed-chapter id="ecls_bio_becls_a3_a17144756.SL9762101.13">
<?ecls-start-embedded-resource resource="ecls_bio_becls_a3_a30660983"?>
<chapter id="ecls_bio_becls_a3_a30660983.SL2300626.14" role="-" toctitle="yes" footrowtitle="no" type="security">
<embed-title_module id="ecls_bio_becls_a3_a30660983.SL2361816.15">
<?ecls-start-embedded-resource resource="ecls_bio_becls_a3_a611713"?>
<title_module id="ecls_bio_becls_a3_a611713.SL873735.16" role="-">
<title id="ecls_bio_becls_a3_a611713.SL873736.17">Sicherheits- und Warnhinweise</title>
</title_module>
<?ecls-end-embedded-resource resource="ecls_bio_becls_a3_a611713"?>
</embed-title_module>
<embed-section id="ecls_bio_becls_a3_a30660983.SL10400094.18">
<?ecls-start-embedded-resource resource="ecls_bio_becls_a3_a11752692"?>
<section id="ecls_bio_becls_a3_a11752692.SL1742298.19" footrowtitle="no" role="-" toctitle="yes">
<?Pub Caret1?>
<embed-title_module id="ecls_bio_becls_a3_a11752692.SL1742291.20">
<?ecls-start-embedded-resource resource="ecls_bio_becls_a3_a16181733"?>
<title_module id="ecls_bio_becls_a3_a16181733.SL984238.21" role="-">
<title id="ecls_bio_becls_a3_a16181733.SL984239.22">Bevor Sie das Gerat in Betrieb nehmen</title>
<para id="ecls_bio_becls_a3_a16181733.SL984240.23">Lesen Sie Gebrauchs- und Montageanleitung aufmerksam durch! Sie enthalten wichtige Informationen �ber Aufstellen, Gebrauch und Wartung des Ger�tes.</para>
<para id="ecls_bio_becls_a3_a16181733.SL984241.24">Der Hersteller haftet nicht, wenn Sie die Hinweise und Warnungen der Gebrauchsanleitung missachten. Bewahren Sie alle Unterlagen f�r sp�teren Gebrauch oder f�r Nachbesitzer auf.</para>
</title_module>
<?ecls-end-embedded-resource resource="ecls_bio_becls_a3_a16181733"?>
</embed-title_module>
</section>
<?Pub *0000000275?>
<?ecls-end-embedded-resource resource="ecls_bio_becls_a3_a11752692"?>
</embed-section>
</chapter>
</embed-chapter>
</user_manual_part>
</embed-user_manual_part>
</language_part>
</embed-language_part>
</user_manual>
I want to use the XQuery language but i am really new to this query language.
The infrastructure I need is this : I want to get the chapter's and its' sections with their titles, for example:
The chapter is like in this xml file :
<chapter id="ecls_bio_becls_a3_a30660983.SL2300626.14" role="-" toctitle="yes" footrowtitle="no" type="security">
<embed-title_module id="ecls_bio_becls_a3_a30660983.SL2361816.15">
<?ecls-start-embedded-resource resource="ecls_bio_becls_a3_a611713"?>
<title_module id="ecls_bio_becls_a3_a611713.SL873735.16" role="-">
<title id="ecls_bio_becls_a3_a611713.SL873736.17">Sicherheits- und Warnhinweise</title>
...
In that example Sicherheits- ind Warnhinweise is the title of chapter element. Chapters can have many sections and in our example section's title is :
<section id="ecls_bio_becls_a3_a11752692.SL1742298.19" footrowtitle="no" role="-" toctitle="yes">
<?Pub Caret1?>
<embed-title_module id="ecls_bio_becls_a3_a11752692.SL1742291.20">
<?ecls-start-embedded-resource resource="ecls_bio_becls_a3_a16181733"?>
<title_module id="ecls_bio_becls_a3_a16181733.SL984238.21" role="-">
<title id="ecls_bio_becls_a3_a16181733.SL984239.22">Bevor Sie das Gerat in Betrieb nehmen</title>
...
Bevor Sie das Gerat in Betrieb nehmen.
The expected structure :
<chapter> title:"Chapter's title"
<section>title:"First section's title"</section>
<section>title:"Second section's title"</section>
</chapter>
For that example chapter has just one section but I just configured this one to reach a solution of my file, it is most readable configuration I guess...
I tried below xquery query :
<chapter
let $doc := doc("Test.xml")
for $chapter in $doc/user_manual/embed-language_part/language_part/embed-user_manual_part/user_manual_part/embed-chapter/chapter
let $chapter_title := $chapter/embed-title_module/title_module/title
for $section in $chapter/embed-section/section
return <chapter>title:{data($chapter_title)} <section> title:{data($section/embed-title_module/title_module/title)}</section></chapter>
with two nested loops, but this code makes my structure like :
<chapter>title:"Chapter's title"<section>"First section's title"</section></chapter>
<chapter>title:"Chapter's title"<section>"Second section's title"</section></chapter>
The problem was looping but when I try to edit code like this :
let $doc := doc("assemble.xml")
for $chapter in $doc/user_manual/embed-language_part/language_part/embed-user_manual_part/user_manual_part/embed-chapter/chapter
let $chapter_title := $chapter/embed-title_module/title_module/title
<chapter> title:{data($chapter_title)} {
for $section in $chapter/embed-section/section
return <section> title:{data($section/embed-title_module/title_module/title)}</section>
}</chapter>
I just want to put the tag in the first loop ones, after that i will add section elements to query. But the above command is not working for my expectation.
So i need your suggestions to get these structure properly. Thank you in advance. I wish i was clearly told the situation to all of you. The name of file assumed as "assemble.xml".
解决方案
<chapters>{
let $doc := doc("assemble.xml")
for $chapter in $doc/user_manual/embed-language_part/language_part/embed-user_manual_part/user_manual_part/embed-chapter/chapter
return
<chapter>
title:{data($chapter/embed-title_module/title_module/title)}
{
for $section in $chapter/embed-section/section
return <section>title: {data($section/embed-title_module/title_module/title)}</section>
}
</chapter>
}</chapters>
I searched around the internet and i found how to make inner loop operation. The code below is working perfectly for my expectations.
这篇关于XQuery嵌套循环的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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