jobinstructionshandler.java

Kohonen网络的学习过程可描述为：对于每一个网络的输入

	 * Handles the lattice element events.
	*/
	private class LatticeHandler extends ElementHandler
	{
		/**
		* Start of an element.
		*/
		public void startElement (String namespaceURI,String name,String qName,Attributes atts) throws SAXException
		{
			if(init)
			{
				if(atts.getValue(0).toLowerCase().equals("rectangular"))
				{
					lattice = "rect";
				}
				else
				{
					lattice = "hexa";
				}
			}
		}
	}

	/*********************************************************************************/

	/*
	 * Handles the neighbourhood element events.
	*/
	private class NeighbourhoodHandler extends ElementHandler
	{
		/**
		* Start of an element.
		*/
		public void startElement (String namespaceURI,String name,String qName,Attributes atts) throws SAXException
		{
			if(init)
			{
				if(atts.getValue(0).toLowerCase().equals("gaussian"))
				{
					neighbourhood = "gaussian";
				}
				else
				{
					neighbourhood = "step";
				}
			}
		}
	}

	/*********************************************************************************/

	/*
	 * Handles the training element events.
	*/
	private class TrainingHandler extends ElementHandler
	{
		/**
		 * Start of an element.
		*/
		public void startElement (String namespaceURI,String name,String qName,Attributes atts) throws SAXException
		{
			training = true;
			job = new JSomTraining(reference,inputVectors);
		}

		/**
		 * End of an element.
		*/
		public void endElement (String uri,String name,String qName) throws SAXException
		{
			training = false;
			job.setTrainingInstructions(steps,lrate,radius,lrateType,neighbourhood);
			reference = job.doTraining();
		}
	}

	/*********************************************************************************/

	/*
	 * Handles the steps element events.
	*/
	private class StepsHandler extends ElementHandler
	{
		/**
		* Character data.
		*/
		public void characters (char[] chars,int start,int len) throws SAXException
		{
			if(training)
			{
				try
				{
					steps = (Integer.valueOf(String.valueOf(chars,start,len).toLowerCase())).intValue();
				}
				catch(NumberFormatException nfe)
				{
					System.out.println(nfe.getMessage());
				}
			}
		}
	}

	/*********************************************************************************/

	/*
	 * Handles the Lrate element events.
	*/
	private class LrateHandler extends ElementHandler
	{
		/**
		 * Start of an element.
		*/
		public void startElement (String namespaceURI,String name,String qName,Attributes atts) throws SAXException
		{
			if(training)
			{
				if(atts.getValue(0).toLowerCase().equals("exponential"))
				{
					lrateType = "exponential";
				}
				else if(atts.getValue(0).toLowerCase().equals("linear"))
				{
					lrateType = "linear";
				}
				else
				{
					lrateType = "inverse";
				}
			}
		}

		/**
		* Character data.
		*/
		public void characters (char[] chars,int start,int len) throws SAXException
		{
			if(training)
			{
				try
				{
					lrate = (Double.valueOf(String.valueOf(chars,start,len).toLowerCase())).doubleValue();
				}
				catch(NumberFormatException nfe)
				{
					System.out.println(nfe.getMessage());
				}
			}
		}
	}

	/*********************************************************************************/

	/*
	 * Handles the radius element events.
	*/
	private class RadiusHandler extends ElementHandler
	{
		/**
		* Character data.
		*/
		public void characters (char[] chars,int start,int len) throws SAXException
		{
			if(training)
			{
				try
				{
					radius = (Integer.valueOf(String.valueOf(chars,start,len).toLowerCase())).intValue();
				}
				catch(NumberFormatException nfe)
				{
					System.out.println(nfe.getMessage());
				}
			}
		}
	}

	/*********************************************************************************/

	/*
	 * Handles the output element events.
	*/
	private class OutputHandler extends ElementHandler
	{
		/**
		 * Start of an element.
		*/
		public void startElement (String namespaceURI,String name,String qName,Attributes atts) throws SAXException
		{
			output = true;
			for(int i=0;i<atts.getLength();i++)
			{
				if(atts.getLocalName(i).toLowerCase().equals("paper"))
				{
					paper = atts.getValue(i).toLowerCase().trim();
					if(paper.equals("a4") || paper.equals("letter"))
					{
						//left empty purposely
					}
					else
					{
						paper = "a4";
					}
				}
				else //orientation
				{
					orientation = atts.getValue(i).toLowerCase().trim();
					if(orientation.equals("portrait") || orientation.equals("landscape"))
					{
						//left empty purposely
					}
					else
					{
						orientation = "landscape";
					}
				}
			}
			//labels the weight vectors
			labels = new JSomLabeling(reference,inputVectors);
			reference = labels.doLabeling();
		}

		/**
		 * End of an element.
		*/
		public void endElement (String uri,String name,String qName) throws SAXException
		{
			output = false;

			/* Create a DOM tree of the generated map */
			JSomCreateDomTree domino = new JSomCreateDomTree(reference,map,30.0);

			/* Output */
			JSomMapOutput gogo = new JSomMapOutput(folder,domino,paper,orientation,map);
			if(xml)
			{
				gogo.outputMap("xml",fileName);
			}
			if(svg)
			{
				gogo.outputMap("svg",fileName);
			}
			if(pdf)
			{
				gogo.outputMap("pdf",fileName);
			}
		}
	}

	/*********************************************************************************/

	/*
	 * Handles the folder element events.
	*/
	private class FolderHandler extends ElementHandler
	{
		/**
		* Character data.
		*/
		public void characters (char[] chars,int start,int len) throws SAXException
		{
			File cache = new File(String.valueOf(chars,start,len));
			if(cache.isDirectory())
			{
				if(output)
				{
					try
					{
						folder = cache;
					}
					catch(NullPointerException npe)
					{
						System.out.println(npe.getMessage());
					}
				}
			}
			else
			{
				System.out.println("Output path is not a folder !");
			}
		}
	}

	/*********************************************************************************/

	/*
	 * Handles the identifier element events.
	*/
	private class IdentifierHandler extends ElementHandler
	{
		/**
		* Character data.
		*/
		public void characters (char[] chars,int start,int len) throws SAXException
		{
			if(output)
			{
				fileName = String.valueOf(chars,start,len);
			}
		}
	}

	/*********************************************************************************/


	/*
	 * Handles the output format type element events.
	*/
	private class TypeHandler extends ElementHandler
	{
		/**
		 * Start of an element.
		*/
		public void startElement (String namespaceURI,String name,String qName,Attributes atts) throws SAXException
		{
			if(output)
			{
				if(atts.getValue(0).toLowerCase().equals("xml"))
				{
					xml = true;
				}
				if(atts.getValue(0).toLowerCase().equals("svg"))
				{
					svg = true;
				}
				if(atts.getValue(0).toLowerCase().equals("pdf"))
				{
					pdf = true;
				}
			}
		}
	}

	/*********************************************************************************/
}