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社区首页 >问答首页 >DomDoc/SimpleXML/XSLT:解析以向元素的每个唯一元素子元素添加自动递增的id属性

问DomDoc/SimpleXML/XSLT:解析以向元素的每个唯一元素子元素添加自动递增的id属性
EN

Stack Overflow用户
提问于 2011-07-27 15:34:46
回答 2查看 812关注 0票数 4

我已经对此进行了一段时间的故障排除，而且我对编程还有点陌生。即使当我发现一个错误，它是很难找到如何纠正它。现在，我正试图弄清楚我是如何使用xpath错误的，因为有人告诉我我使用了xpath错误。如果我做错了什么，我希望有人能告诉我我做错了什么，特别是迭代。这是我在这个项目上工作的最后一晚，如果可以的话，我真的想完成它。所以我真的需要帮助。下面是我使用的代码，附带注释：

代码语言：javascript
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$xml = @simplexml_load_file("original.xml"); //Loading the original file, dubbed original.xml.
$array_key_target_parent = count($xml->xpath('/doc/*'); //Puts all of the children of <doc> into an _iterable_ array.
$key_targets = foreach($array_key_target_parent;){
  foreach($array_key_target_parent as $single_target){ // I tried foreach($array_key_target_parent[$i]).  It doesn't work, so don't even go there.
    $current_target = current($single_target);
    count($xml->xpath('/doc/$current_target/*');
  }
} */ ////Puts the targets for keying into iterable arrays.  =>1 makes the array start from 1, so the id's will be right.


/* At this point, we have multiple elements that we want to key, each having a unique name.  There's <element_type1a> and <element_type1b>, etc.  We want each one to have its own id set.  So, we have to embed iteration within iteration. */
foreach($key_target){ //This will ensure that every unique element that we want to key gets its key set.
  {
  $id = current($key_target=>1); //This allows us to reset the id to 1 (=>1), each time the key algorithm starts for a new element.
  foreach($key_target as $id){ //I tried for($i=0, $key_target[$i]; $i>$key_target; $i++), and it didn't work, so don't even go there.
    addAttribute('id', '$id');
  }
}  //Adds an 'id' attribute and a unique number to each target.

$xml->asXML("new.xml"); //saves the output as a new xml document, new.xml

我还有一个通用的XML文件：

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<doc>
    <info_type1>
        <element_type1a>not_unique_data</element_type1a>
        <element_type1b>unique_data</element_type1b>
        <element_type2a>not_unique_data</element_type2a>
        <element_type2b>not_unique_data</element_type2b>
        <element_type2c lang="fr">not_unique_data</element_type2c>
        <!-- ... --->
        <element_typeNxM>unique_data</element_typeNxM>
    </info_type1>
    <info_type2>
        <element_type1a>repeat_data(info_type1_element1a)</element_type1a>
        <element_type2a>not_unique_data</element_type2a>
    </info_type2>
    <!-- ... --->
    <info_typeN>
        <descendants></descendants>
    </info_typeN>
</doc>

期望产出：

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<datatables>
    <table id="element_type1">
        <element_type1a id="1">unique_data</element_type1a>
        <element_type1b id="2">unique_data</element_type1b>
        <!-- ... --->
        <element_type1N id="M">unique_data</element_type1N>
    </table>
    <table id="element_type2">
        <element_type2a id="1">unique_data</element_type2a>
        <element_type2b id="2">unique_data</element_type2b>
        <!-- ... --->
        <element_type2N id="M">unique_data</element_type2N>
    </table>
    <table id="element_type2_fr">
        <element_type2a lang="fr" id="1">unique_data</element_type2a>
        <element_type2b lang="fr" id="2">unique_data</element_type2>
        <!-- ... (there are five languages) --->
        <element_type2N lang="fr" id="M">unique_data</element_type2N>
    </table>
    <!-- ... --->
    <table id="element_typeN">
        <descendants></descendants>
    </table>
</datatables>

和

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<intermediary_tables>
    <table id="intermediary_table_type1xtype2">
        <element id="1">
            <type1ID>1</type1ID>
            <type2ID>1</type2ID>
        </element>
        <element id="2">
            <type1ID>1</type1ID>
            <type2ID>2</type2ID>
        </element>
        <element id="3">
            <type1ID>2</type1ID>
            <type2ID>1</type2ID>
        </element>
        <element id="4">
            <type1ID>2</type1ID>
            <type2ID>2</type2ID>
        </element>
        <!-- ... --->
        <element id="N">
            <type1ID>M</type1ID>
            <type2ID>Z</type2ID>
        </element_type2N>
    </table>

    <table id="intermediary_table_typeMxtypeN">
        <descendants></descendants>
    </table>
</intermediary_tables>

我还看到了许多类似的问题，我从这些问题中收集到了一些资源，并从中读到：

  • http://www.ibm.com/developerworks/xml/library/x-xmlphp1/index.html
  • http://www.php.net/manual/en/simplexmlelement.addattribute.php
  • http://www.learn-xslt-tutorial.com/
  • http://msdn.microsoft.com/en-us/library/ms256103.aspx
  • http://php.net/manual/en/class.domdocument.php

这些是最有用的链接：

  • http://www.capcourse.com/Library/NormalizingXML/Part1.html
  • http://forums.tizag.com/showthread.php?t=17821

我发现这些问题的应用都不能产生我想要达到的结果。不过，capcourse.com链接是个例外。它面向的是一个渐变的CS观众，似乎他们在做同样的事情，除了他们使用的ID不是自动递增。他们使用的算法非常复杂，他们根本没有注释他们的代码。他们在名称空间中使用名称空间是出于某种原因，即使它是我能找到的最接近的名称空间，我也不能完全复制它。

更新

我想解析一个XML文档的现实世界摘录，以更改数据结构：

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<?xml version="1.0"?>
<!DOCTYPE catalog [
<!ELEMENT catalog (entry*)>
<!ELEMENT entry (ent_seq, country*, arist+, info?, title+)><!-- Entries consist of the name of the album, artist, and more information about the CD.  Each entry must contain an artist and an album title. -->
<!ELEMENT ent_seq (#PCDATA)><!-- A unique numeric sequence, showing the entry number -->
<!ELEMENT title (#PCDATA)><!-- The title of the album/the album name. -->
<!ELEMENT artist (band+, name, nickname*)><!-- The name of the band, and if there was a famous artist, his name and nickname.  Must contain a band element. -->
<!ELEMENT band (#PCDATA)><!-- The name of the band. -->
<!ELEMENT name (#PCDATA)><!-- The name of any famous artist in the band. -->
<!ELEMENT nickname (#PCDATA)><!-- The nickname of the popular artist that precedes the nickname element, from the band. -->
<!ELEMENT country (#PCDATA)><!-- Specifies countries where the album was released -->
<!ELEMENT company (name, country)><!-- Company/producer info.  The company's name is in the name element, and the country where the company originated is in the country element. -->
<!ELEMENT name (#PCDATA)><!-- The name of the producer -->
<!ELEMENT country (#PCDATA)><!-- The country where the company does its primary business -->
<!ELEMENT year (#PCDATA)><!-- The year of the album's release -->
<!ELEMENT info (link*, bibl*)><!-- Additional info, including links and bibliography information -->
<!ELEMENT link (#PCDATA)><!-- Links where people can read more about the album -->
<!ELEMENT bibl (#PCDATA)><!-- Bibliography text about the artist -->
]>
<catalog>
  <cd>
    <ent_seq>1</ent_seq>
    <title>For Your Love</title>
    <artist>
      <name>The Yardbirds</name>
      <name>Eric Clapton</name>
      <nickname>Slowhand</nickname>
    </artist>
    <country>USA</country>
    <country>UK</country>
    <company>
      <name>Sweet Music</name>
      <country>USA</country>
    </company>
    <year>1965</year>
    <info>
      <link>http://en.wikipedia.org/wiki/For_Your_Love</link>
    </info>
  </cd>
  <cd>
    <ent_seq>2</ent_seq>
    <title>Splish Splash</title>
    <artist>
      <name>Roberto Carlos</name>
      <nickname>The King</nickname>
    </artist>
    <country>USA</country>
    <country>Brazil</country>
    <country>Italy</country>
    <company>
      <name>Sweet Music</name>
    <country>Brazil</country>
    </company>
    <year>1965</year>
  </cd>
  <cd>
    <ent_seq>3</ent_seq>
    <title>How Great Thuo Art</title>
    <artist>
      <name>Elvis Presley</name>
      <nickname>The King</nickname>
      <nickname>The King of Rock 'n Roll</nickname>
    </artist>
    <country>USA</country>
    <country>Canada</country>
    <country>UK</country>
    <company>
      <name>Felton Jarvis</name>
      <country>USA</country>
    </company>
    <year>1965</year>
  </cd>
  <cd>
    <ent_seq>4</ent_seq>
    <title>Big Willie style</title>
    <artist>
      <band>Will Smith</band>
      <name>Will Smith</name>
    </artist>
    <country>USA</country>
    <company>Columbia</company>
    <year>1997</year>
  </cd>
  <cd>
    <ent_seq>5</ent_seq>
    <title>Empire Burlesque</title>
    <artist>
      <band>Bob Dylan and Boby Rockhammer</band>
      <name>Bob Dylan</name>
      <name>Boby Rockhammer</name>
    </artist>
    <country>USA</country>
    <country>India</country>
    <company>Columbia</company>
    <year>1985</year>
  </cd>
  <cd>  <!-- Update part 1: New Entry -->
    <ent_seq>6</ent_seq>
    <title>Merry Christmas</title>
    <title>White Christmas</title>
    <artist>
      <name>Bing Crosby</name>
    <artist>
    <country>USA</country>
    <company>MCA Records</company>
    <year>1995</year>
  </cd> <!-- End update part 1-->
</catalog>

所需输出示例的真实示例：

代码语言：javascript
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<datatable>
  <table id="album title">
    <title id="1">For your Love</title>
    <title id="2">Splish Splash</title>
    <title id="3">How Great Thuo Art</title>
    <title id="4">Big Willie style</title>
    <title id="5">Empire Burlesque</title>
    <title id="6">Merry Christmas</title> <!-- Update part 2: New output -->
    <title id="7">White Christmas</title> <!-- Update part 2: New output -->
  </table>
  <table id="Band Name">
    <artist id="1">The Yardbirds</artist>
    <artist id="2">Roberto Carlos</artist>
    <artist id="3">Elvis Presley</artist>
    <artist id="4">Will Smith</artist>
    <artist id="5">Bob Dylan and Boby Rockhammer</artist>
    <artist id="6"> <!-- Update part 2: New output -->
  </table>
  <table id="artist name">
    <artist id="1">Eric Clapton</artist>
    <artist id="2">Roberto Carlos</artist>
    <artist id="3">Elvis Presley</artist>
    <artist id="4">Will Smith</artist>
    <artist id="5">Bob Dylan</artist>
    <artist id="6">Boby Rockhammer</artist>
    <artist id="7">Bing Crosby</artist> <!-- Update part 2: New output -->
  </table>
  <table id="nickname">
    <nickname id="1">Slowhand</nickname>
    <nickname id="2">The King</nickname>
    <nickname id="3">The King of Rock 'n Roll</nickname>
  </table>
</datatable>

和

代码语言：javascript
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<intermediarytable>
  <table id="artist by band name">
    <entry id="1">
      <band_id>1</band_id>
      <artist_id>1</artist_id>
    </entry>
    <entry id="2">
      <band_id>2</band_id>
      <artist_id>2</artist_id>
    </entry>
    <entry id="3">
      <band_id>3</band_id>
      <artist_id>3</artist_id>
    </entry>
    <entry id="4">
      <band_id>4</band_id>
      <artist_id>4</artist_id>
    </entry>
    <entry id="5">
      <band_id>5</band_id>
      <artist_id>5</artist_id>
    </entry>
    <entry id="6">
      <band_id>5</band_id>
      <artist_id>6</artist_id>
    </entry>
    <entry id="7">
      <band_id>6</band_id>
      <artist_id>7</artist_id>
    </entry>
  </table>
  <table id="artist by nickname">
    <entry id="1">
      <artist_id>1</artist_id>
      <nickname_id>1</artist_id>
    </entry>
    <entry id="2">
      <artist_id>2</artist_id>
      <nickname_id>2</nickname_id>
    </entry>
    <entry id="3">
      <artist_id>2</artist_id>
      <nickname_id>3</nickname_id>
    </entry>
    <entry id="4">
      <artist_id>3</artist_id>
      <nickname_id>3</nickname_id>
    </entry>
  </table>
</intermediarytable>

--更新--存在两个元素共享相同条目ID的问题

在另一个XML文档中，

代码语言：javascript
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<entry id="1">
  <word>blue</word>
  <word>beryl</word>
  <word lang="SP">azul</word>
</entry>

我希望输出是

数据表：

代码语言：javascript
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<table id="en">
  <word lang="en" id="0">blue</word>
  <word lang="en" id="1">beryl</word>
</table>
<table id="sp">
  <word lang="sp" id="0">azul</word>
</table>

中介表：

代码语言：javascript
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<table id="translation id">
  <en_sp id="0"> <!-- en_sp means English-to-Spanish -->
    <en>0</en>
    <sp>0</sp>
  </en_sp>
  <en_sp>
    <en>1</en>
    <sp>0</sp>
  </en_sp>
</table>
xml
data-structures
simplexml
domdocument
php
EN

Stack Overflow用户

发布于 2011-07-27 16:50:56

为了澄清，您正在尝试获取一个输入XML文档，使用XSL/T将其转换为另一个(格式不同的) xml文档，然后获取结果XML并将其存储在MySQL数据库中？

我对堆栈溢出很陌生，所以我不知道如何在原来的帖子中添加注释。

票数 0
EN
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页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：

https://stackoverflow.com/questions/6847111

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