计算机科学论坛--如何利用已建好本体来进行web信息搜索

贴子主题：如何利用已建好本体来进行web信息搜索

本主题类别: Ontology Engineering

一直有事没上来公布答案的，抱歉啦，各位，谢谢楼上童鞋的帮助，感谢感谢，特将代码全奉上，有需要的盆友可以看看下回去调试

public class Tree extends JFrame{

public  final String strDriver = "com.mysql.jdbc.Driver";
public  final String strURL = "jdbc:mysql://localhost/course";
public  final String strUser = "root";
public final String strPassword ="";
public  final String strDB = "MySQL";
public static IDBConnection connectDB(String DBURL, String DBUSER, String DBPASSWORD, String DBTYPE){
   try {
    Class.forName("com.mysql.jdbc.Driver");
   System.out.print("数据库连接成功, 已经连接到");
   }catch (ClassNotFoundException e){
    e.printStackTrace();
    System.out.println("数据库连接不成功");
   }
   return new DBConnection(DBURL, DBUSER,DBPASSWORD,DBTYPE);
}
public static OntModelSpec getModelSpec(ModelMaker maker) {
   OntModelSpec spec = new OntModelSpec(OntModelSpec.OWL_MEM);
   spec.setImportModelGetter(maker);
   return spec;
}
public static OntModel ceateDBModelFromFile(IDBConnection con, String name, String filePath){
   ModelMaker maker = ModelFactory.createModelRDBMaker(con);
   Model base = maker.createModel(name);
   OntModel newmodel = ModelFactory.createOntologyModel(getModelSpec(maker),base);
   newmodel.read(filePath);
   System.out.println("已将本体文件存入数据库。");
   System.out.println();
   return newmodel;
}
public static OntModel getModelFromDB(IDBConnection con, String name){
   ModelMaker maker = ModelFactory.createModelRDBMaker(con);
   Model base = maker.getModel(name);
   OntModel newmodel = ModelFactory.createOntologyModel(getModelSpec(maker),base);
   System.out.println("已从数据库中读出本体文件。");
   System.out.println();
   return newmodel;
}
public static ArrayList<OntResource> getRecord(OntClass targetClass, ArrayList<OntResource> record)
  {
   if (! targetClass.isAnon())
   {
       record.add(targetClass);
       OntClass tempClass = targetClass;

      while (tempClass.hasSuperClass())
    {
      Iterator<OntClass> superClassIterator = tempClass.listSuperClasses(true);
       OntClass superClass = null;
       while ( superClassIterator.hasNext())
       {
        superClass = superClassIterator.next();
        if ( !superClass.isAnon())
        {
         break;
        }
       }
       if ( superClass != null && !superClass.isAnon())
       {
        if ( tempClass.getURI() == superClass.getURI())
         break;
        record.add(superClass);

        tempClass = superClass;
       }
       else
        break;

    }

   }
   return record;
  }
public static void addRecordToTree(DefaultMutableTreeNode sourceRoot, ArrayList<OntResource> record)
  {
   DefaultMutableTreeNode lastNode = sourceRoot;
   DefaultMutableTreeNode insertingNode=null;
   for ( int i = 0; i < record.size(); ++i)
   {

    boolean alreadyExisted = false;
    for ( int j = 0; j< lastNode.getChildCount(); ++ j)
    {
     if ( ((OntResource)((DefaultMutableTreeNode)lastNode.getChildAt(j)).getUserObject()).getURI() == record.get(record.size()-i-1).getURI())
     {
      lastNode = (DefaultMutableTreeNode) lastNode.getChildAt(j);
      alreadyExisted = true;
      break;
     }

    }
    if( alreadyExisted == false)
    {
      insertingNode = new DefaultMutableTreeNode();
      insertingNode.setUserObject(record.get(record.size()-i-1));
      lastNode.add(insertingNode);
      lastNode = insertingNode;
    }
   }
  }
@SuppressWarnings("unchecked")
public void treeinit(){
   JTree jTree=new JTree();
   GridLayout lay=new GridLayout(1,1);
   DefaultMutableTreeNode root=new DefaultMutableTreeNode("");
    DefaultMutableTreeNode father=new DefaultMutableTreeNode("root");
    root.add(father);
     TreeModel treeModel = new DefaultTreeModel(root);
      jTree.setModel(treeModel);
     this.setSize(400,400);
     this.setLayout(lay);
     this.add(jTree);
     this.setVisible(true);
     jTree.setCellRenderer(new IndividualTreeCellRenderer());

    IDBConnection con = connectDB(strURL, strUser, strPassword, strDB);
     System.out.println(con + ";");
     System.out.println();
     String filePath = "";
     String prefix = " ";
     OntModel defModel = ceateDBModelFromFile(con, "Course1", filePath);
     OntModel model = getModelFromDB(con, "Course1");
     ArrayList<OntResource> record = new ArrayList<OntResource>();
     Iterator<OntClass> classIterator = model.listClasses();

   while ( classIterator.hasNext())
   {
    OntClass currentClass = classIterator.next();

    getRecord(currentClass, record);

    addRecordToTree((DefaultMutableTreeNode)root.getChildAt(0),record);
    record.clear();   }   }
public static void main(String[] args)
{
  Tree tree =new Tree();
  tree.treeinit();     }}


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