Isis::XmlStackedHandler Class Reference

XML Handler that parses XMLs in a stack-oriented way. More...

#include <XmlStackedHandler.h>

Inheritance diagram for Isis::XmlStackedHandler:

Collaboration diagram for Isis::XmlStackedHandler:

Public Member Functions
virtual void	setReader (XmlStackedHandlerReader *)
void	switchToNewHandler (XmlStackedHandler *nextHandler)
virtual bool	startElement (const QString &namespaceURI, const QString &localName, const QString &qName, const QXmlAttributes &atts)
virtual bool	endElement (const QString &namespaceURI, const QString &localName, const QString &qName)

Protected Member Functions
XmlStackedHandlerReader *	reader ()
const XmlStackedHandlerReader *	reader () const

Private Member Functions
	Q_DISABLE_COPY (XmlStackedHandler)

Private Attributes
XmlStackedHandlerReader *	m_reader
int	m_depth
QString	m_lastStartNamespaceURI
QString	m_lastStartLocalName
QString	m_lastStartQName
QXmlAttributes	m_lastStartAtts

Detailed Description

XML Handler that parses XMLs in a stack-oriented way.

This XML handler is designed to work with the XmlStackedHandlerReader. This XML handler class handles passing off parsing to another handler. For example, if your XML is:

    <xmlTag1>
      <xmlTag2>
        <xmlTag3>
      </xmlTag2>
    </xmlTag>
  

If this handler is pushed onto the reader (which is the parser stack) when the startElement of xmlTag2 is seen, then this XML handler will see all of the xml data up to and including the xmlTag2 close tag. This handler would never see xmlTag1. Here is an example of how this works:

  --> Push initial XML handler (Handler1)
  <xmlTag1> -- Handler1::startElement
    <xmlTag2> -- Handler1::startElement: calls reader()->pushContentHandler(Handler2)
              -- Handler2::startElement
      <xmlTag3> -- Handler2::startElement
                  -- Handler2::endElement
    </xmlTag2> -- Handler2::endElement
               -- Handler1::endElement
  </xmlTag1> -- Handler1::endElement

Author

2012-??-?? Steven Lambright

Definition at line 46 of file XmlStackedHandler.h.

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The documentation for this class was generated from the following files:

• src/base/objs/XmlStackedHandler/XmlStackedHandler.h
• src/base/objs/XmlStackedHandler/XmlStackedHandler.cpp