Class FileDataProvenance.ProvenanceXMLHandler

  • All Implemented Interfaces:
    org.xml.sax.ContentHandler, org.xml.sax.DTDHandler, org.xml.sax.EntityResolver, org.xml.sax.ErrorHandler
    Enclosing class:
    FileDataProvenance

    private class FileDataProvenance.ProvenanceXMLHandler
    extends org.xml.sax.helpers.DefaultHandler
    Handle events generated while parsing the XML file.
    • Field Summary

      Fields 
      Modifier and Type Field Description
      private ProvenanceEntry currentEntry
      the current provenance entry (to be inserted into the holder)
      private java.lang.String currentKey
      The current XML tag we are parsing.
      private java.lang.String elementBuffer
      The data for the current element being parsed.
      private ProvenanceHolder holder
      the provenance holder to read information into
    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      void characters​(char[] ch, int start, int length)
      DOCUMENT ME!
      void endElement​(java.lang.String namespaceURI, java.lang.String localName, java.lang.String qName)
      Parser calls this when the end tag of each element is reached.
      void startElement​(java.lang.String namespaceURI, java.lang.String localName, java.lang.String qName, org.xml.sax.Attributes atts)
      Parser calls this for each element in a document.
      • Methods inherited from class org.xml.sax.helpers.DefaultHandler

        endDocument, endPrefixMapping, error, fatalError, ignorableWhitespace, notationDecl, processingInstruction, resolveEntity, setDocumentLocator, skippedEntity, startDocument, startPrefixMapping, unparsedEntityDecl, warning
      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    • Field Detail

      • currentKey

        private java.lang.String currentKey
        The current XML tag we are parsing.
      • elementBuffer

        private java.lang.String elementBuffer
        The data for the current element being parsed.
      • holder

        private ProvenanceHolder holder
        the provenance holder to read information into
      • currentEntry

        private ProvenanceEntry currentEntry
        the current provenance entry (to be inserted into the holder)
    • Constructor Detail

      • ProvenanceXMLHandler

        public ProvenanceXMLHandler​(ProvenanceHolder ph)
        Default constructor
        Parameters:
        ph - the provenance holder to read the information into
    • Method Detail

      • characters

        public void characters​(char[] ch,
                               int start,
                               int length)
        DOCUMENT ME!
        Specified by:
        characters in interface org.xml.sax.ContentHandler
        Overrides:
        characters in class org.xml.sax.helpers.DefaultHandler
        Parameters:
        ch - char[]
        start - int
        length - int
      • endElement

        public void endElement​(java.lang.String namespaceURI,
                               java.lang.String localName,
                               java.lang.String qName)
                        throws org.xml.sax.SAXException
        Parser calls this when the end tag of each element is reached. Data collected in the elementbuffer is generally saved to the image info.
        Specified by:
        endElement in interface org.xml.sax.ContentHandler
        Overrides:
        endElement in class org.xml.sax.helpers.DefaultHandler
        Parameters:
        namespaceURI - the namespace (not used)
        localName - the current tag we are parsing
        qName - ? (not used)
        Throws:
        org.xml.sax.SAXException - if there is a problem with the parser
      • startElement

        public void startElement​(java.lang.String namespaceURI,
                                 java.lang.String localName,
                                 java.lang.String qName,
                                 org.xml.sax.Attributes atts)
                          throws org.xml.sax.SAXException
        Parser calls this for each element in a document.
        Specified by:
        startElement in interface org.xml.sax.ContentHandler
        Overrides:
        startElement in class org.xml.sax.helpers.DefaultHandler
        Parameters:
        namespaceURI - the namespace (not used)
        localName - the current tag we are parsing
        qName - ? (not used)
        atts - attributes for the current tag
        Throws:
        org.xml.sax.SAXException - if there is a problem with the parser