Thanks both of you. I'll try this over the weekend and will post
whatever I get to work next week.
Chas.
Dirk Gronert wrote:
Upayavira wrote:
Charles F. Munat wrote:
Simple question, but can't find the answer anywhere.
I want to load an XML config file into memory, and then access its
element and attribute values from flowscript using XPath. It will be
a different file for each page request (these parameters will be used
to help create the response).
Essentially, I'd like to create something like this in the flowscript:
function setParams(uri) {
cocoon.context.setAttributes("params", -config file data here-);
}
Here's the config file (example):
<?xml version="1.0" encoding="UTF-8"?>
<params>
<color>blue</color>
<size>XL</size>
<quantity>5</quantity>
</params>
No time to give you a thorough answer, but what you can do is:
(a) read your config file into a DOM document
Can't tell you this off the top of my head
function loadDocument(uri) {
var parser = null;
var source = null;
var resolver = null;
try {
parser =
cocoon.getComponent(Packages.org.apache.excalibur.xml.dom.DOMParser.ROLE);
resolver =
cocoon.getComponent(Packages.org.apache.cocoon.environment.SourceResolver.ROLE);
source = resolver.resolveURI(uri);
var is = new
Packages.org.xml.sax.InputSource(source.getInputStream());
is.setSystemId(source.getURI());
return parser.parseDocument(is);
} finally {
if (source != null)
resolver.release(source);
cocoon.releaseComponent(parser);
cocoon.releaseComponent(resolver);
}
}
(b) Create a JXPathContext, using your DOM document:
var jx =
Packages.org.apache.commons.jxpath.JXPathContext.newContext(myDomObject);
jx.setLenient(true);
(c) Use the JXPathContext to access your objects.
var color = jx.getValue("/params/color");
It isn't that hard, but if you do a lot of it, you might like to wrap
this in a small Java class so that you can:
var jx = MyJXPathObject.getConfigFile("myconfigfile.xml");
var color = jx.getValue("/params/color");
Regards, Upayavira
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