org.azzyzt.jee.runtime.util
Class AttributedTags2QuerySpec

java.lang.Object
  extended by org.xml.sax.helpers.DefaultHandler
      extended by org.azzyzt.jee.runtime.util.AttributedTags2QuerySpec
All Implemented Interfaces:
Xml2QuerySpec, org.xml.sax.ContentHandler, org.xml.sax.DTDHandler, org.xml.sax.EntityResolver, org.xml.sax.ErrorHandler

public class AttributedTags2QuerySpec
extends org.xml.sax.helpers.DefaultHandler
implements Xml2QuerySpec

This class is a SAX parser for an XML representation of QuerySpec. The XML format is one of tags with attributes and without namespaces. The format was largely determined by what was easy to create for Flex clients. Alternative formats could be implemented after the same pattern. If so, it would probably make sense to factor common code out. We already had one alternative format with tags only, but as it was not used, it became tedious to support. For ease of implementation we extend DefaultHandler, and to abstract the concrete parser class used, we implement Xml2QuerySpec for the one externally used method.

See Also:
QuerySpec, Xml2QuerySpec

Constructor Summary
AttributedTags2QuerySpec()
           
 
Method Summary
 void characters(char[] ch, int start, int length)
           
 void endElement(java.lang.String uri, java.lang.String localName, java.lang.String qName)
           
 QuerySpec fromXML(java.lang.String xml)
           
 void startDocument()
           
 void startElement(java.lang.String uri, java.lang.String localName, java.lang.String qName, org.xml.sax.Attributes attributes)
           
 
Methods inherited from class org.xml.sax.helpers.DefaultHandler
endDocument, endPrefixMapping, error, fatalError, ignorableWhitespace, notationDecl, processingInstruction, resolveEntity, setDocumentLocator, skippedEntity, startPrefixMapping, unparsedEntityDecl, warning
 
Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

AttributedTags2QuerySpec

public AttributedTags2QuerySpec()
Method Detail

fromXML

public QuerySpec fromXML(java.lang.String xml)
                  throws QuerySyntaxException
Specified by:
fromXML in interface Xml2QuerySpec
Parameters:
xml - an XML representation of a QuerySpec
Returns:
a QuerySpec
Throws:
QuerySyntaxException

startDocument

public void startDocument()
                   throws org.xml.sax.SAXException
Specified by:
startDocument in interface org.xml.sax.ContentHandler
Overrides:
startDocument in class org.xml.sax.helpers.DefaultHandler
Throws:
org.xml.sax.SAXException

startElement

public void startElement(java.lang.String uri,
                         java.lang.String localName,
                         java.lang.String qName,
                         org.xml.sax.Attributes attributes)
                  throws org.xml.sax.SAXException
Specified by:
startElement in interface org.xml.sax.ContentHandler
Overrides:
startElement in class org.xml.sax.helpers.DefaultHandler
Throws:
org.xml.sax.SAXException

endElement

public void endElement(java.lang.String uri,
                       java.lang.String localName,
                       java.lang.String qName)
                throws org.xml.sax.SAXException
Specified by:
endElement in interface org.xml.sax.ContentHandler
Overrides:
endElement in class org.xml.sax.helpers.DefaultHandler
Throws:
org.xml.sax.SAXException

characters

public void characters(char[] ch,
                       int start,
                       int length)
                throws org.xml.sax.SAXException
Specified by:
characters in interface org.xml.sax.ContentHandler
Overrides:
characters in class org.xml.sax.helpers.DefaultHandler
Throws:
org.xml.sax.SAXException