From 2695b304a060ea9b8d09a30be9e74c32287826ba Mon Sep 17 00:00:00 2001
From: Tesselation <t.esselation@gmx.net>
Date: Fri, 31 Jul 2015 14:30:29 +0200
Subject: [PATCH] Bugfix: Return error message if a resource contains no
 content

---
 changelog.html | 4 ++++
 errors.xml     | 5 +++++
 extract.xql    | 6 ++++--
 3 files changed, 13 insertions(+), 2 deletions(-)
 create mode 100644 errors.xml

diff --git a/changelog.html b/changelog.html
index 46a701f..68f4c4b 100755
--- a/changelog.html
+++ b/changelog.html
@@ -8,6 +8,10 @@ <h1 data-template="config:app-title">Generated page</h1>
 			<div class="row-fluid">
 				<div class="span8">
 					<h2>Changelog</h2>
+					<h3>1.2.1</h3>
+					<ul>
+						<li>BUGFIX: Return error message if a resource contains no content</li>
+					</ul>
 					<h3>1.2.0</h3>
 					<ul>
 						<li>INFO: Minor changes to documentation.</li>
diff --git a/errors.xml b/errors.xml
new file mode 100644
index 0000000..ffac983
--- /dev/null
+++ b/errors.xml
@@ -0,0 +1,5 @@
+<errors>
+    <error type="resource_no_content">
+        <message>Resource contains no content</message>
+    </error>
+</errors>
\ No newline at end of file
diff --git a/extract.xql b/extract.xql
index 12e9611..a3d1cbd 100755
--- a/extract.xql
+++ b/extract.xql
@@ -238,10 +238,12 @@ declare function xtriples:extractTriples($currentResource as node(), $resourceIn
 	(: set the content of the current resource :)
 	let $currentResource := 
 		(: it can be a resource tag with an URI :)
-		if (xs:anyURI($currentResource/@uri)) then 
+		if (xs:anyURI($currentResource/@uri) and fn:doc-available($currentResource/@uri)) then 
 			fn:doc($currentResource/@uri)
 		(: or a resource tag with children :)
-		else $currentResource/*
+		else if ($currentResource/*) then 
+			$currentResource/*
+		else fn:doc("errors.xml")//error[@type='resource_no_content']
 
 	(: start statement pattern extraction :)
 	for $statement in $configuration//triples/*