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From commons-...@jakarta.apache.org
Subject [jira] Commented: (JELLY-28) Bad entity processing
Date Fri, 20 Aug 2004 04:25:20 GMT
The following comment has been added to this issue:

     Author: dion gillard
    Created: Thu, 19 Aug 2004 9:24 PM
       Body:
For me it's not a blocker, but a known beta issue.
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View this comment:
  http://issues.apache.org/jira/browse/JELLY-28?page=comments#action_37356

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View the issue:
  http://issues.apache.org/jira/browse/JELLY-28

Here is an overview of the issue:
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        Key: JELLY-28
    Summary: Bad entity processing
       Type: Bug

     Status: Open
   Priority: Blocker

    Project: jelly
 Components: 
             core / taglib.core
   Fix Fors:
             1.0-beta-4

   Assignee: james strachan
   Reporter: Incze Lajos

    Created: Thu, 30 Jan 2003 7:44 PM
    Updated: Thu, 19 Aug 2004 9:24 PM
Environment: No special environment.

Description:
Have a file, name it a.xml with this content:

-----------------------------
<?xml version="1.0"?>
<!DOCTYPE a [
<!ENTITY x "y">
]>
<a>&x;</a>
-----------------------------

Run the below simple (maven) jelly script:

-----------------------------
<project default="java:jar"
         xmlns:j="jelly:core"
         xmlns:x="jelly:xml">

  <goal name="emnl:test">
    <x:parse var="doc" xml="a.xml"/>
    <echo><x:copyOf select="$doc"/></echo>
  </goal>

</project>
-----------------------------

The result will be this:


-----------------------------
....
emnl:test:
    [echo] <?xml version="1.0" encoding="UTF-8"?>
<a>&x;y</a>
BUILD SUCCESSFUL
-----------------------------

I'm aware of the fact that the bug originally comes from dom4j.
The below dom4j program fragment

-----------------------------
....
  SAXReader xmlReader = new SAXReader();
  Document doc = xmlReader.read("a.xml");
  XMLWriter writer = new XMLWriter(System.out);
  writer.write(doc);
  writer.flush();
....
-----------------------------

will output this result:

-----------------------------
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE a><a>&x;</a>
-----------------------------

which is bad (not even well-formed). I've filed this issue
at the dom4j bugtracker
(http://sourceforge.net/tracker/?group_id=16035&atid=116035)
under the number 676427, with some notes one the possible
resolution.

But as we can see, the jelly xml tag adds a twist to the dom4j bug,
it inserts both the entity and the entity value into the tag.

Thanks, incze


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