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POHow would you use Java to handle various XML documents?
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  1. POHow would you use Java to handle various XML documents?
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    copied!<p>I'm looking for the best method to parse various XML documents using a Java application. I'm currently doing this with SAX and a custom content handler and it works great - zippy and stable. </p> <p>I've decided to explore the option having the same program, that currently recieves a single format XML document, receive two additional XML document formats, with various XML element changes. I was hoping to just swap out the ContentHandler with an appropriate one based on the first "startElement" in the document... but, uh-duh, the ContentHandler is set and <strong>then</strong> the document is parsed!</p> <pre><code>... constructor ... { SAXParserFactory spf = SAXParserFactory.newInstance(); try { SAXParser sp = spf.newSAXParser(); parser = sp.getXMLReader(); parser.setErrorHandler(new MyErrorHandler()); } catch (Exception e) {} ... parse StringBuffer ... try { parser.setContentHandler(pP); parser.parse(new InputSource(new StringReader(xml.toString()))); return true; } catch (IOException e) { e.printStackTrace(); } catch (SAXException e) { e.printStackTrace(); } ... </code></pre> <p>So, it doesn't appear that I can do this in the way I initially thought I could.</p> <p>That being said, am I looking at this entirely wrong? What is the best method to parse multiple, discrete XML documents with the same XML handling code? <a href="https://stackoverflow.com/questions/23106/best-method-to-parse-various-custom-xml-documents-in-java">I tried to ask in a more general post earlier... but, I think I was being too vague</a>. For speed and efficiency purposes I never really looked at DOM because these XML documents are fairly large and the system receives about 1200 every few minutes. It's just a one way send of information</p> <p>To make this question too long and add to my confusion; following is a mockup of some various XML documents that I would like to have a single SAX, StAX, or ?? parser cleanly deal with. </p> <p>products.xml:</p> <pre><code>&lt;products&gt; &lt;product&gt; &lt;id&gt;1&lt;/id&gt; &lt;name&gt;Foo&lt;/name&gt; &lt;product&gt; &lt;id&gt;2&lt;/id&gt; &lt;name&gt;bar&lt;/name&gt; &lt;/product&gt; &lt;/products&gt; </code></pre> <p>stores.xml:</p> <pre><code>&lt;stores&gt; &lt;store&gt; &lt;id&gt;1&lt;/id&gt; &lt;name&gt;S1A&lt;/name&gt; &lt;location&gt;CA&lt;/location&gt; &lt;/store&gt; &lt;store&gt; &lt;id&gt;2&lt;/id&gt; &lt;name&gt;A1S&lt;/name&gt; &lt;location&gt;NY&lt;/location&gt; &lt;/store&gt; &lt;/stores&gt; </code></pre> <p>managers.xml:</p> <pre><code>&lt;managers&gt; &lt;manager&gt; &lt;id&gt;1&lt;/id&gt; &lt;name&gt;Fen&lt;/name&gt; &lt;store&gt;1&lt;/store&gt; &lt;/manager&gt; &lt;manager&gt; &lt;id&gt;2&lt;/id&gt; &lt;name&gt;Diz&lt;/name&gt; &lt;store&gt;2&lt;/store&gt; &lt;/manager&gt; &lt;/managers&gt; </code></pre>
 

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