I actually had a similar need the other week and while I have used some
XML-JAVA mappers like Castor and XStream in the past I decided to try another
approach where I generated JSON which can be used from flowscript:
/** flowscript function to generate the pdf **/
function json2Object(json) {
return eval("(" + json + ")");
}
function generatePDF() {
var id = cocoon.parameters.id; //e.g. PH3330L
//var fileName = cocoon.getComponent('fileNameExtractor').getFileName(id);
var output = new Packages.java.io.ByteArrayOutputStream();
var uri = "extractData/" + id;
//now we invoke a pipeline which returns a JSON string. E.g:
/**
* {"id": "PH3330L","fileName": "PH3330L.pdf"},
*/
cocoon.processPipelineTo(uri, null, output);
var responseData = json2Object(output.toString());
var response = cocoon.response;
response.setHeader(
"Content-Disposition",
"attachment; filename=" + responseData.fileName;
);
cocoon.sendPage('source2pdf/' + id);
}
Sitemap:
----------
<!--
{1} id: unique identifier for the source xml used to generate the PDF
-->
<map:match pattern="generatePdf/*">
<map:call function="generatePDF">
<map:parameter name="id" value="{1}"/>
</map:call>
</map:match>
<map:match pattern="source2pdf/*">
<map:generate src="source/{1}.xml"/> <!-- assume our sources are located in
source folder -->
<map:transform src="xslt/source2poi.xslt"/>
<map:serialize type="pdf"/>
</map:match>
<!--
{1} id: unique identifier for the source xml used to generate the PDF
-->
<map:match pattern="extractData/*">
<map:generate src="source/{1}.xml"/>
<map:transform src="extractData.xslt"/>
<map:serialize type="json"/> <!-- you can quickly test with @type="text" -->
</map:match>
/**** ExtractData.xslt will generate a JSON representation of the DATA needed
****/
<?xml version="1.0" encoding="UTF-8"?>
<!--
Author: Robby Pelssers
-->
<xsl:stylesheet version="2.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
xmlns:xs="http://www.w3.org/2001/XMLSchema";>
<xsl:output method="text" version="1.0" encoding="UTF-8"/>
<xsl:template match="/">
<xsl:text>{"id": "</xsl:text><xsl:value-of
select="someXpathExpr"/><xsl:text>", "fileName: "</xsl:text><xsl:value-of
select="someXpathExpr"/>"}<xsl:text></xsl:text>
</xsl:template>
</xsl:stylesheet>
