Replacing Xml Code Blocks

Question

Hi, Fellas
I have a problem regarding an Xml document, where I need to remove
blocks of xml code, if there are control characters found in a block. (you know those squares that sometimes appear). Of course i need to manipulate the code using
Java API's
What i want to do is when i find a control character (which could come
anywhere inside a client node), I want to remove the entire client block from the document and return it as a string in a java class. In the example code below Two <client> blocks contain control characters, so those blocks has to be removed.
I really cant think of an efficient way to do this. an Xml document may
contain several hundreds of such client node blocks.
Please, if any of u guys can think of mechanism it would be of great
help
Example Xml code
<...>
<client>
<name>Charles Darwin������</name>
<address>32, Vincent Av, London</address>
<info>Bill Lawry</info>
</client>
<client>
<name>Richie Benaud</name>
<address>32, Vincent Av, London</address>
<info>Some information goes here</info>
</client>
<client>
<name>Bill Lawry����</name>
<address>32, Vincent Av, London</address>
<info>Some information goes here</info>
</client>
<client>
<name>Mark Waugh</name>
<address>32, Vincent Av, London</address>
<info>Some information goes here</info>
</client>
<...>
Appreciate your time
Thanks
Shiran.

Answer 1

- load your XML file into a Document instance
- Iterate thru the children Node instances, starting from the root
- for each Node instance, call a checking method: if the method returns false, remove the Node instance from its parent
- the checking method simply converts the Node instance into a String instance (using the toString() method), then checks the string contents (or seeks well
known special characters into the string, if the special characters list is short enough). Of course, the use of regular expressions can be another way.
Hope this helped,
Regards.