Revision 8516 trunk/extensions/extGraph_predes/src/com/iver/cit/gvsig/fmap/core/symbols/SymbolFactory.java

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SymbolFactory.java
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*
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* $Id$
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* $Log$
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* Revision 1.1  2006-10-30 19:30:35  jaume
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* Revision 1.2  2006-11-06 07:33:54  jaume
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* javadoc, source style
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*
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* Revision 1.1  2006/10/30 19:30:35  jaume
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* *** empty log message ***
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*
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*
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*/
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package com.iver.cit.gvsig.fmap.core.symbols;
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import com.iver.andami.messages.NotificationManager;


  		




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import com.iver.cit.gvsig.fmap.core.ISymbol;


  		




  
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import com.iver.utiles.NotExistInXMLEntity;


  		




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import com.iver.utiles.XMLEntity;


  		




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/**


  		




  
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 * Factory for obtaining ISymbols of any kind from several sources like.


  		




  
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 * <ol>


  		




  
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 * 	<li>


  		




  
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 * 		<b>XMLEntity's</b> that, at least, contains a full class name


  		




  
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 * 			string property that defines which class handles such symbol.


  		




  
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 *  </li>


  		




  
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 * </ol>


  		




  
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 *


  		




  
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 * @author jaume dominguez faus - jaume.dominguez@iver.es


  		




  
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 */


  		




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public class SymbolFactory {


  		




  
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	/**


  		




  
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	 * Factory that allows to create ISymbol from an ISymbol xml


  		




  
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	 * descriptor. A barely specific XMLEntity object


  		




  
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	 */


  		




  
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	public static ISymbol createFromXML(XMLEntity xml) {


  		




  
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		String className = null;


  		




  
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		try {


  		




  
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			className = xml.getStringProperty("className");


  		




  
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		} catch (NotExistInXMLEntity e) {


  		




  
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			NotificationManager.


  		




  
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				addError("Symbol class name not set.\n" +


  		




  
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						" Maybe you forgot to add the" +


  		




  
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						" putProperty(\"className\", yourClassName)" +


  		




  
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						" call in the getXMLEntity method of your symbol", e);


  		




  
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		}


  		




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	public static ISymbol createFromXML(XMLEntity xml) {


  		




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		Class clazz;


  		




  
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		Class clazz = null;


  		




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		ISymbol sym = null;


  		




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		try {


  		




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			clazz = Class.forName(xml.getStringProperty("className"));


  		




  
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			clazz = Class.forName(className);


  		




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			sym = (ISymbol) clazz.newInstance();


  		




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			sym.setXMLEntity(xml);


  		




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		} catch (InstantiationException e) {


  		




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			// TODO Auto-generated catch block


  		




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			e.printStackTrace();


  		




  
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			NotificationManager.


  		




  
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				addError("Trying to instantiate an interface" +


  		




  
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						" or abstract class + "+className, e);


  		




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		} catch (IllegalAccessException e) {


  		




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			// TODO Auto-generated catch block


  		




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			e.printStackTrace();


  		




  
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			NotificationManager.addError(null, e);


  		




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		} catch (ClassNotFoundException e) {


  		




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			// TODO Auto-generated catch block


  		




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			e.printStackTrace();


  		




  
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			NotificationManager.addError("No class called " + className +


  		




  
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					" was found.\nCheck the following.\n" +


  		




  
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					"\t- The fullname of the class you're looking " +


  		




  
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						"for matches the value in the className " +


  		




  
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						"property of the XMLEntity ("+className+").\n" +


  		




  
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					"\t- The jar file containing your symbol class is in" +


  		




  
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						"the application classpath", e);


  		




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		}


  		




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		return sym;


  		




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	}


  		












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