组合 XmlWriter 对象？

发布于 2024-08-13 09:23:16 字数 1304 浏览 8 评论 0原文

我的应用程序的结构方式是，每个组件都会生成 XML 格式的输出并返回一个 XmlWriter 对象。在将最终输出呈现到页面之前，我组合所有 XML 并对该对象执行 XSL 转换。下面是应用程序结构的简化代码示例。

像这样组合 XmlWriter 对象有意义吗？有更好的方法来构建我的应用程序吗？最佳解决方案是我不必将单个 XmlWriter 实例作为参数传递给每个组件。

function page1Xml() {
 $content = new XmlWriter();
 $content->openMemory();
 $content->startElement('content');
 $content->text('Sample content');
 $content->endElement();
 return $content;
}

function generateSiteMap() {
 $sitemap = new XmlWriter();
 $sitemap->openMemory();
 $sitemap->startElement('sitemap');
 $sitemap->startElement('page');
 $sitemap->writeAttribute('href', 'page1.php');
 $sitemap->text('Page 1');
 $sitemap->endElement();
 $sitemap->endElement();
 return $sitemap;
}

function output($content)
{
 $doc = new XmlWriter();
 $doc->openMemory();
 $doc->writePi('xml-stylesheet', 'type="text/xsl" href="template.xsl"'); 
 $doc->startElement('document');

 $doc->writeRaw( generateSiteMap()->outputMemory() );
 $doc->writeRaw( $content->outputMemory() );

 $doc->endElement();
 $doc->endDocument();

 $output = xslTransform($doc);
 return $output;
}

$content = page1Xml();
echo output($content);

更新：
我可能会完全放弃 XmlWriter，而使用 DomDocument。它更灵活，而且似乎表现更好（至少在我创建的粗略测试中）。

原文

The way my application is structured, each component generates output as XML and returns an XmlWriter object. Before rendering the final output to the page, I combine all XML and perform an XSL transformation on that object. Below, is a simplified code sample of the application structure.

Does it make sense to combine XmlWriter objects like this? Is there a better way to structure my application? The optimal solution would be one where I didn't have to pass a single XmlWriter instance as a parameter to each component.

function page1Xml() {
 $content = new XmlWriter();
 $content->openMemory();
 $content->startElement('content');
 $content->text('Sample content');
 $content->endElement();
 return $content;
}

function generateSiteMap() {
 $sitemap = new XmlWriter();
 $sitemap->openMemory();
 $sitemap->startElement('sitemap');
 $sitemap->startElement('page');
 $sitemap->writeAttribute('href', 'page1.php');
 $sitemap->text('Page 1');
 $sitemap->endElement();
 $sitemap->endElement();
 return $sitemap;
}

function output($content)
{
 $doc = new XmlWriter();
 $doc->openMemory();
 $doc->writePi('xml-stylesheet', 'type="text/xsl" href="template.xsl"'); 
 $doc->startElement('document');

 $doc->writeRaw( generateSiteMap()->outputMemory() );
 $doc->writeRaw( $content->outputMemory() );

 $doc->endElement();
 $doc->endDocument();

 $output = xslTransform($doc);
 return $output;
}

$content = page1Xml();
echo output($content);

Update:
I may abandon XmlWriter altogether and use DomDocument instead. It is more flexible and it also seemed to perform better (at least on the crude tests I created).

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灯下孤影 2024-08-20 09:23:16

在这个架构中，我宁愿将 Writer 的集合传递给输出，沿着以下路线

 function output($ary) {
     .....
     foreach($ary as $w) $doc->writeRaw($w->outputMemory());
     .....
 }

 output(array(page1(), siteMap(), whateverElse()))

in this architecture i'd rather pass a collection of Writers to output, along the lines of

 function output($ary) {
     .....
     foreach($ary as $w) $doc->writeRaw($w->outputMemory());
     .....
 }

 output(array(page1(), siteMap(), whateverElse()))

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