Re: How do I access the original name for XML elements, including the original namespace prefix.

Tuesday, October 21, 2008, 7:58:56 AM, Geoff Shuetrim wrote:

> I am trying to use Freemarker to produce an HTML representation of an
> XML document, maintaining all of the information in the original
> document (including xmlns:prefix="namespaceURI" declarations and the
> prefixes on element names).  
>
> Note that I do not know, in advance, what the namespaces used in the XML
> document will be, so I cannot declare them in my Freemarker template.
>
> When using the XML processing capabilities of Freemarker to access
> elements in the XML document, is there some way for me to access the
> original node name including the original prefix?

It's not possible (as the prefix name in the XML source is irrelevant
according to the XML info-model), unless you set the XML parser to
namespace unaware, with
DocumentBuilderFactory.setNamespaceAware(boolean).

> Regards
>
> Geoff Shuetrim
>
> As background, I am currently generating the HTML rendering of the XML
> using the following macros:
>
> [#escape x as x?html]
> [@displayChildren parent=someElementNode indent=0 /]
> [/#escape]
>
>
> [#macro displayChildren parent indent]
>
> [#if parent?node_type="text"]
> [#if parent?trim!=""]
> <br/>
> [@space indent=indent/]
> [@elementText text="${parent?html}"/]
> [/#if]
> [/#if]
>
> [#if parent?node_type="element"]
>
[#if indent >> 0]<br/>[/#if]
> [@space indent=indent/]
> [@leftBracket/]
> [@elementName text="${parent?node_name}"/]
>
> [#assign children = parent?children /]
> [#assign hasChildren = (children?size != 0) /]
> [#assign attributes = parent.@@ /]
> [#assign hasAttributes = (attributes?size != 0) /]
> [#assign isLeafNode = (children?size = 0) /]
>
> [#if hasAttributes]
> [#list attributes as attribute]
> [#assign markup = attribute.@@markup?html /]
> [#assign parts = markup?split("=") /]
> [#assign name = parts[0] /]
> [#assign value = parts[1] /]
> <br/>[@space indent=(indent+1)/]
> [@attributeName text="${name}"/]
> =
> [@attributeValue text="${value}"/]
> [/#list]
> [/#if]
>
> [#if isLeafNode]
> [@closeRightBracket /]
> [#else]
> [@rightBracket /]
> [#list children as child]
> [@displayChildren parent=child indent=(indent+1) /]
> [/#list]
> <br/>
> [@space indent=indent /]
> [@leftBracket /]
> /
> [@elementName text="${parent?node_name}" /]
> [@rightBracket /]
> [/#if]
>
> [/#if] 
>
> [/#macro]
>
> [#macro space indent]
> [#if indent!=0]
> [#list 1..indent as tab]
> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
> [/#list]
> [/#if]
> [/#macro]
>
> [#macro leftBracket symbol="&lt;"]
> <span class="element">${symbol}</span>
> [/#macro]
>
> [#macro rightBracket symbol="&gt;"]
> <span class="element">${symbol}</span>
> [/#macro]
>
> [#macro closeRightBracket symbol="&gt;"]
> <span class="element">/${symbol}</span>
> [/#macro]
>
> [#macro elementName text]
> <span class="elementName">
> ${text?html}
> </span>
> [/#macro]
>
> [#macro elementText text]
> <span class="elementText">${text}</span>
> [/#macro]
>
> [#macro attributeName text]
> <span class="attributeName">${text}</span>
> [/#macro]
>
> [#macro attributeValue text]
> <span class="attributeValue">${text}</span>
> [/#macro]
>
>
>
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-- 
Best regards,
 Daniel Dekany


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