xpathmanager.java

JDBF是一个实现o/r mapping 的软件

	/**
	 *
	 * Return the BeanDescriptor object
	 *
	 * @see BeanDescriptor
	 * @param  e -Element  xml node in the repository
	 * @return BeanDescriptor
	 * @throws MappingException
	 *
	 */
	protected BeanDescriptor getBeanDescriptor(Element e) throws MappingException{

	    BeanDescriptor beanDescriptor = new BeanDescriptor();
		String attribute = e.getAttribute("name");
		logger.log(Level.INFO,Messages.format("XPathManager.beanDesc",attribute));

	    if(attribute == null || attribute.equals("")){			
			logger.throwing(getClass().getName(), "getBeanDescriptor", 
				            new MappingException("mapping.repositoryViewNameMissing"));
			throw new MappingException("mapping.repositoryViewNameMissing");
		}
		else
			beanDescriptor.setRepositoryViewName(attribute);

		attribute = e.getAttribute("table-name");

		if(attribute == null || attribute.equals("")){
		
			logger.throwing(getClass().getName(), "getBeanDescriptor", 
				            new MappingException("mapping.noTableName",xPath));
			throw new MappingException("mapping.noTableName",xPath);
		}
		else
			beanDescriptor.setTableName(attribute);

		attribute = e.getAttribute("object-name");

		if(attribute == null || attribute.equals("")){
		
			logger.throwing(getClass().getName(), "getBeanDescriptor", 
				            new MappingException("mapping.classMapNotFound",xPath));
			throw new MappingException("mapping.classMapNotFound",xPath);
		}
		else
			beanDescriptor.setClassName(attribute);

		attribute = e.getAttribute("database-name");

		if(attribute == null || attribute.equals("")){
		
			logger.throwing(getClass().getName(), "getBeanDescriptor", 
				            new MappingException("mapping.databaseNameMissing"));	
			throw new MappingException("mapping.databaseNameMissing");
		}
		else
			beanDescriptor.setDatabaseName(attribute);

		logger.log(Level.FINEST,beanDescriptor.toString());
		return beanDescriptor;
	}


	/**
	 *
	 * Return the ItemDescriptor object
	 * 
	 * If the xPath is incorrect MappingException is throwed
	 *
	 * @see ItemDescriptor
	 * @param  xPath  path the repositoryView on the repository
	 * @return Collection of ItemDescriptor
	 * @throws MappingException
	 *
	 */
	protected ArrayList getItemDescriptor(String xPath,
										  BeanDescriptor beanDescriptor)
		throws MappingException{

	    ArrayList itemDescriptors = new ArrayList();
		PrimaryKeyMap pk = new PrimaryKeyMap();	
	    try{
				
			NodeList nl = XPathAPI.selectNodeList(document, xPath);

         	for (int i = 0 ; i < nl.getLength(); i++) {

			    ItemDescriptor itemDescriptor = new ItemDescriptor();
			    Element e =(Element)nl.item(i);
	
			    String primaryKey = e.getAttribute("primary-key");
	
			    if(primaryKey == null || primaryKey.equals("")){
			    
			       logger.throwing(getClass().getName(), "getItemDescriptor()", 
					       new MappingException("mapping.primaryKeyMissing"));
			       throw new MappingException("mapping.primaryKeyMissing");
			    }
			    else{
	
				 //if item is unique key
				 if(primaryKey.equalsIgnoreCase("yes"))
			        itemDescriptor.setIsPrimaryKey(true);
				 else
				    itemDescriptor.setIsPrimaryKey(false);
			    }
	
			    String attribute = e.getAttribute("property-name");
	
			    if(attribute == null || attribute.equals("")){
			       logger.throwing(getClass().getName(), "getItemDescriptor()", 
					       new MappingException("mapping.propertyNameMissing"));
			       throw new MappingException("mapping.propertyNameMissing");
	         	}
			    else
				   itemDescriptor.setPropertyName(attribute);
	
			    attribute = e.getAttribute("data-type");
	
			    if(attribute == null || attribute.equals("")){
	    		    	logger.throwing(getClass().getName(), "getItemDescriptor()", 
					       new MappingException("mapping.sqlTypeMissing"));
	    		    	throw new MappingException("mapping.sqlTypeMissing");
			    }
			    else
	    		   itemDescriptor.setDataType(attribute);
	
			    attribute = e.getAttribute("column-name");
	
			    if(attribute == null || attribute.equals("")){
	     			logger.throwing(getClass().getName(), "getItemDescriptor()", 
					       new MappingException("mapping.columnNameMissing"));
	     			throw new MappingException("mapping.columnNameMissing");
			    }
	 		    else
	    			itemDescriptor.setColumnTableName(attribute);
				
				if(itemDescriptor.isPrimaryKey()){				
					pk.addKey(itemDescriptor);
					beanDescriptor.setPrimaryKeyMap(pk);
				}
				else
	    			itemDescriptors.add(itemDescriptor);
         	}
	     }
	     catch(TransformerException e){
			logger.throwing(getClass().getName(), "getItemDescriptor()", 
				       new MappingException(e));
	       throw new MappingException(e);
	     }
	     finally{
		   
	       return itemDescriptors;
	     }
	}


	/**
	 *
	 * Load all repositoryView object in RepositoryFactory.
	 *
	 * @throws MappingException if error occurs
	 *
	 */
	protected void loadRepositoryFactory() throws MappingException {

	    try{
			logger.log(Level.INFO,Messages.message("XPathManager.loadingRep"));
			xPath = "/repository/*";
			NodeList nl = XPathAPI.selectNodeList(document, xPath);

			for(int i = 0 ; i < nl.getLength() ; i++) {

				Element node = (Element) nl.item(i);
				RepositoryView repository = (RepositoryView)
											createRepositoryView(node);
				String repositoryViewName = repository.getBeanDescriptor()
													  .getRepositoryViewName();
				repFactory.addRepository(repositoryViewName,repository);				
				logger.log(Level.INFO,Messages.format("XPathManager.repAdd",
					       repositoryViewName));
			}

	    }
	    catch(TransformerException e){
			
			logger.throwing(getClass().getName(), "loadRepositoryFactory()", 
				       new MappingException(e));
			throw new MappingException(e);
	    }
	}


	/**
	 *
	 * Return  RepositoryFactory
	 *
	 * @return RepositoryFactory
	 *
	 */
	public RepositoryFactory getRepositoryFactory() {

		return repFactory;
	}


	/**
	 *
	 * Parses the repository file specified in fileName
	 *
	 * @param  fileName  name of repository file
	 * @return Document
	 * @throws MappingException
	 * @throws SAXException
	 * @throws ParserConfigurationExcpetion 
	 *
	 */
	protected Document parse(String fileName) throws ParserConfigurationException,SAXException,MappingException {

		DocumentBuilderFactory dfactory = null;
		InputSource in = null;
		Document doc = null;
		try{

			//Set up a DOM tree to query
			in = new InputSource( new FileInputStream(fileName) );
			dfactory = DocumentBuilderFactory.newInstance();
			dfactory.setNamespaceAware(true);
			
			doc = dfactory.newDocumentBuilder().parse(in);
			
		}
		catch(FileNotFoundException e){
			logger.throwing(getClass().getName(), "parse()", 
				       new MappingException("mapping.missingRepositoryConf",fileName));
			throw new MappingException("mapping.missingRepositoryConf",fileName);
			//return null;
		}
		catch(IOException e){
			logger.throwing(getClass().getName(), "parse()", 
				       new MappingException("mapping.missingRepositoryConf",fileName));
    		throw new MappingException("mapping.missingRepositoryConf",fileName);
    		//return null;
		}
		finally{
			return doc;
		}
	}

}

/*

 $Log: XPathManager.java,v $
 Revision 1.16  2004/05/31 22:51:19  gmartone
 changed for task 99533 (Composite Primary Key)

 Revision 1.15  2004/05/20 22:44:15  gmartone
 Changed for task 99073 (Coverage Javadocs)

 Revision 1.14  2004/05/18 18:18:47  gmartone
 resolved bug 953273 and changed javadocs

 Revision 1.13  2004/04/29 22:34:46  gmartone



 Task 66484 (Logging System)

 Revision 1.12  2004/01/25 00:32:58  giabac
 Correct banal error, otherwise it don't compile

 Revision 1.11  2004/01/22 00:11:31  gmartone




 Task 66484 (Logging System) added management of logs

 Revision 1.10  2003/10/30 15:44:08  lechertl
 cosmetic changes


*/