From 8fee192b06cc9df71bc4acc086be42f19cff2244 Mon Sep 17 00:00:00 2001
From: Mike Taylor <mike@indexdata.com>
Date: Fri, 4 May 2007 12:09:24 +0000
Subject: [PATCH] Add and use xpath_context()

---
 lib/ZOOM/IRSpy/Record.pm |   16 ++++++++++------
 1 file changed, 10 insertions(+), 6 deletions(-)

diff --git a/lib/ZOOM/IRSpy/Record.pm b/lib/ZOOM/IRSpy/Record.pm
index 7659e4a..4ba8bb6 100644
--- a/lib/ZOOM/IRSpy/Record.pm
+++ b/lib/ZOOM/IRSpy/Record.pm
@@ -1,4 +1,4 @@
-# $Id: Record.pm,v 1.24 2007-04-27 14:04:40 mike Exp $
+# $Id: Record.pm,v 1.25 2007-05-04 12:09:24 mike Exp $
 
 package ZOOM::IRSpy::Record;
 ### I don't think there's any reason for this to be separate from
@@ -10,7 +10,7 @@ use warnings;
 
 use XML::LibXML;
 use XML::LibXML::XPathContext;
-use ZOOM::IRSpy::Utils qw(xml_encode isodate);
+use ZOOM::IRSpy::Utils qw(xml_encode isodate irspy_xpath_context);
 
 =head1 NAME
 
@@ -72,8 +72,7 @@ sub append_entry {
     my($xpath, $frag) = @_;
 
     #print STDERR "this=$this, xpath='$xpath', frag='$frag'\n";
-    my $root = $this->{zeerex}; # XML::LibXML::Element ISA XML::LibXML::Node
-    my $xc = XML::LibXML::XPathContext->new($root);
+    my $xc = $this->xpath_context();
     $xc->registerNs(zeerex => "http://explain.z3950.org/dtd/2.0/");
     $xc->registerNs(irspy => $ZOOM::IRSpy::Utils::IRSPY_NS);
 
@@ -83,8 +82,7 @@ sub append_entry {
 	# fully general version would work its way through each
 	# component of the XPath, but for now we just treat it as a
 	# single chunk to go inside the top-level node.
-	$this->_half_decent_appendWellBalancedChunk($root,
-						    "<$xpath></$xpath>");
+	$this->_half_decent_appendWellBalancedChunk($xc, "<$xpath></$xpath>");
 	@nodes = $xc->findnodes($xpath);
 	die("still no matches for '$xpath' after creating: can't append")
 	    if @nodes == 0;
@@ -97,6 +95,12 @@ sub append_entry {
     $this->_half_decent_appendWellBalancedChunk($nodes[0], $frag);
 }
 
+sub xpath_context {
+    my $this = shift();
+
+    return irspy_xpath_context($this->{zeerex});
+}
+
 sub store_result {
     my ($this, $type, %info) = @_;
     my $xml = "<irspy:$type";
-- 
1.7.10.4