SAX XML Parser problem

Question

Hi,
I have a standard .xml file and a file called TemplateContentHandler that parses the info in the xml doc but there is an error in it. See below:
TemplateContentHandler.java
if ( strElementName.equals( TemplateConstants.RNC_Module_LDN_TU1 ) ) {
            timingUnit1TagExistInDefaultTemplateFile = true;
            System.err.println("timingUnit1TagExistInDefaultTemplateFile for TU1 == "+timingUnit1TagExistInDefaultTemplateFile);
            System.err.println("strValue for TU1 == "+strValue);
            tTemplate.setRNC_Module_LDN_TU1( strValue );
            Trace.exit();
            return;
        if ( strElementName.equals( TemplateConstants.RNC_Module_LDN_TU2 ) ) {
            timingUnit2TagExistInDefaultTemplateFile = true;
            System.err.println("timingUnit2TagExistInDefaultTemplateFile for TU2 == "+timingUnit2TagExistInDefaultTemplateFile);
            System.err.println("strValue for TU2 == "+strValue);
            tTemplate.setRNC_Module_LDN_TU2( strValue );       
            Trace.exit();
            return;
        }DefaultTemplate
<RNC_Module_LDN_TU2>ManagedElement=1,Equipment=1,Subrack=MS,Slot=5,PlugInUnit=1</RNC_Module_LDN_TU2>
<RNC_Module_LDN_TU1>ManagedElement=1,Equipment=1,Subrack=MS,Slot=4,PlugInUnit=1</RNC_Module_LDN_TU1>
OutPut
root@atrcus13> timingUnit2TagExistInDefaultTemplateFile for TU2 == true
strValue for TU2 == ManagedElement=1,Equipment=1,Subrack=MS,Slot=5,PlugInUnit=1
timingUnit1TagExistInDefaultTemplateFile for TU1 == true
strValue for TU1 == ManagedElement=1,Equipment=1,Subrack=MS,SlottimingUnit1TagExistInDefaultTemplateFile for TU1 == true
strValue for TU1 == =4,PlugInUnit=1
as you can see it parses the Tag <RNC_Module_LDN_TU1> twice and splits it in2 pieces. does anyone know why this is? Also I added a dirty hack whcih works:
private int timimngUnit1Tagcounter = 0;
    private int timimngUnit2Tagcounter = 0;
if( timimngUnit1Tagcounter == 0) {
                tempTU1 = strValue;
                timimngUnit1Tagcounter++;
                Trace.message("FIRST TIME STRVALUE === "+strValue);
                tTemplate.setRNC_Module_LDN_TU1( strValue );
            else {
                Trace.message("SECOND TIME STRVALUE === " + tempTU1+strValue);
                 tTemplate.setRNC_Module_LDN_TU1( tempTU1+strValue );
                 timimngUnit1Tagcounter = 0;
            }but now the parser is screwing up other tags in the file; anyone have any ideas?
Thanks,
Vinnie

Answer 1

In which method is the code you've posted called?
Given your results, I'd suspect that it's in characters, and strValue is a string created from the character data passed in.
in that case, read
http://java.sun.com/j2se/1.4.2/docs/api/org/xml/sax/ContentHandler.html#characters(char[],%20int,%20int)
in particular
The Parser will call this method to report each chunk of character data. SAX parsers may return all contiguous character data in a single chunk, or they may split it into several chunks; however, all of the characters in any single event must come from the same external entity so that the Locator provides useful information.
The accepted pattern of use where you want to process all character data between tags in one go is to use a StringBuffer to acculmulate the characters, then process them in the following endElement or beginElement method.
Pete