org.biojava.utils.stax
Class DoubleElementHandlerBase

java.lang.Object
  extended by org.biojava.utils.stax.StAXContentHandlerBase
      extended by org.biojava.utils.stax.DoubleElementHandlerBase
All Implemented Interfaces:
StAXContentHandler

public abstract class DoubleElementHandlerBase
extends StAXContentHandlerBase

StAX handler for any element which just contains a string representation of a double.

This calss collects the string data, and when it is complete, passes it to the (abstract) setDoubleValue method. Typical use of this class is as a base for a small (often anonymous) class which takes the double value and stores it in some variable.

Since:
1.2
Author:
Matthew Pocock, Greg Cox

Constructor Summary
DoubleElementHandlerBase()
           
 
Method Summary
 void characters(char[] ch, int start, int end)
          Signal a span of character data in the XML input.
 void endElement(String nsURI, String localName, String qName, StAXContentHandler handler)
           
protected abstract  void setDoubleValue(double val)
           Override this method to do something useful with the double we collect.
 void startElement(String nsURI, String localName, String qName, Attributes attrs, DelegationManager dm)
           
 
Methods inherited from class org.biojava.utils.stax.StAXContentHandlerBase
endPrefixMapping, endTree, ignorableWhitespace, processingInstruction, setDocumentLocator, skippedEntity, startPrefixMapping, startTree
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

DoubleElementHandlerBase

public DoubleElementHandlerBase()
Method Detail

startElement

public void startElement(String nsURI,
                         String localName,
                         String qName,
                         Attributes attrs,
                         DelegationManager dm)
                  throws SAXException
Specified by:
startElement in interface StAXContentHandler
Overrides:
startElement in class StAXContentHandlerBase
Throws:
SAXException

endElement

public void endElement(String nsURI,
                       String localName,
                       String qName,
                       StAXContentHandler handler)
                throws SAXException
Specified by:
endElement in interface StAXContentHandler
Overrides:
endElement in class StAXContentHandlerBase
Throws:
SAXException

characters

public void characters(char[] ch,
                       int start,
                       int end)
                throws SAXException
Description copied from class: StAXContentHandlerBase
Signal a span of character data in the XML input.

Specified by:
characters in interface StAXContentHandler
Overrides:
characters in class StAXContentHandlerBase
Parameters:
ch - an array of characters
start - index of the first significant character for this event.
end - number of characters significant to this event.
Throws:
SAXException

setDoubleValue

protected abstract void setDoubleValue(double val)
                                throws SAXException

Override this method to do something useful with the double we collect.

This method will be invoked by endElement with the fully parsed double.

Parameters:
val - the fully parsed double
Throws:
SAXException - if for any reason the double is not palatable