[jdom-interest] removing element from document

rolf.lear at algorithmics.com rolf.lear at algorithmics.com
Thu Dec 6 11:38:01 PST 2007


Just change the inside of the loop from:

                      //throws ConcurrentModificationException
                      feature.getChild("FIELDS").removeContent(field);

to:

                      //throws ConcurrentModificationException
                      j.remove();

It is 'well-documented' that if you have an integrator, you can't change
the collection apon which the iterator is based, unless you use the
iterator to make the change. See the ConcurrentModificationException
javadoc.

Rolf

-----Original Message-----
From: jdom-interest-bounces at jdom.org
[mailto:jdom-interest-bounces at jdom.org] On Behalf Of John Cartwright
Sent: Thursday, December 06, 2007 2:10 PM
To: jdom-interest at jdom.org
Subject: [jdom-interest] removing element from document

Hello All,

I need to remove all the Elements from a Document who have a particular 
attribute w/ a particular value.  My first (unsuccessful) attempt was 
Element#removeContent w/in an iterator loop which throws a 
ConcurrentModificationException.

Can someone suggest to me the correct way to do this sort of thing?

Thanks!

-- john

         
          List features = 
root.getChild("RESPONSE").getChild("FEATURES").getChildren("FEATURE");
          for (Iterator i=features.iterator();i.hasNext();) {
              feature = (Element) i.next();
              fields = feature.getChild("FIELDS").getChildren("FIELD");
              for (Iterator j=fields.iterator(); j.hasNext();) {
                  field = (Element)j.next();
                  if ("#SHAPE#".equals(field.getAttributeValue("name")))
{
                      //throws ConcurrentModificationException
                      feature.getChild("FIELDS").removeContent(field);
                  }
              }            
          }

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