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Message-ID: <20031010183515.90739.qmail@web41502.mail.yahoo.com>
Date: Fri, 10 Oct 2003 11:35:15 -0700 (PDT)
From: John C Bledsoe <johncbledsoe@yahoo.com>
Subject: [JXPath] Collection as Context
To: commons-user@jakarta.apache.org
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Hello,

Does JXPath support any kind of Collection as a
Context?  I have had success with a Map but no success
with an ArrayList.

For example,

Given a list of Addresses, find all with a zip code of
90210.

// pseudo code
ArrayList list = new ArrayList();
list.add(new Address("90210"));
list.add(new Address("66213"));
list.add(new Address("90210"));
JXPathContext context =
JXPathContext.newContext(list);
Iterator iter = context.iterate("zipCode='90210'"); 
// returns one element of Boolean.FALSE
// many other XPath expression attempts omitted

I got it to work when the list is a bean property of
another class; e.g. "addresses[zipCode='90210']".

Also, is there any guarantee that a search will return
an ordered iterator if the expression is executed on a
Collection that guarantees order; i.e. LinkedList?

John


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