xmlbeans.java

代码是一个分类器的实现,其中使用了部分weka的源代码。可以将项目导入eclipse运行

    m_CurrentNode = node;
    
    result   = null;
    children = XMLDocument.getChildTags(node);
    fontname = "";
    style    = 0;
    size     = 0;

    for (i = 0; i < children.size(); i++) {
      child = (Element) children.get(i);
      name  = child.getAttribute(ATT_NAME);

      if (name.equals(VAL_NAME))
        name = (String) invokeReadFromXML(child);
      else if (name.equals(VAL_STYLE))
        style = readIntFromXML(child);
      else if (name.equals(VAL_SIZE))
        size = readIntFromXML(child);
      else
        System.out.println("WARNING: '" + name
            + "' is not a recognized name for " + node.getAttribute(ATT_NAME) + "!");
    }
    
    result = new Font(fontname, style, size);

    return result;
  }

  /**
   * adds the given Point to a DOM structure.
   * 
   * @param parent the parent of this object, e.g. the class this object is a member of
   * @param o the Object to describe in XML
   * @param name the name of the object
   * @return the node that was created
   * @throws Exception if the DOM creation fails
   */
  public Element writePoint(Element parent, Object o, String name)
      throws Exception {
    
    Element     node;
    Point       p;

    // for debugging only
    if (DEBUG)
       trace(new Throwable(), name);
    
    m_CurrentNode = parent;
    
    p    = (Point) o;
    node = addElement(parent, name, p.getClass().getName(), false);

    writeDoubleToXML(node, p.getX(), VAL_X);
    writeDoubleToXML(node, p.getY(), VAL_Y);
    
    return node;
  }

  /**
   * builds the Point from the given DOM node.
   * 
   * @param node the associated XML node
   * @return the instance created from the XML description
   * @throws Exception if instantiation fails
   */
  public Object readPoint(Element node) throws Exception {
    Object      result;
    Vector      children;
    Element     child;
    int         i;
    double      x;
    double      y;
    String      name;

    // for debugging only
    if (DEBUG)
       trace(new Throwable(), node.getAttribute(ATT_NAME));

    m_CurrentNode = node;
    
    result   = null;
    children = XMLDocument.getChildTags(node);
    x        = 0;
    y        = 0;

    for (i = 0; i < children.size(); i++) {
      child = (Element) children.get(i);
      name  = child.getAttribute(ATT_NAME);

      if (name.equals(VAL_X))
        x = readDoubleFromXML(child);
      else if (name.equals(VAL_Y))
        y = readDoubleFromXML(child);
      else
        System.out.println("WARNING: '" + name
            + "' is not a recognized name for " + node.getAttribute(ATT_NAME) + "!");
    }
    
    result = new Point();
    ((Point) result).setLocation(x, y);

    return result;
  }

  /**
   * adds the given ColorUIResource to a DOM structure.
   * 
   * @param parent the parent of this object, e.g. the class this object is a member of
   * @param o the Object to describe in XML
   * @param name the name of the object
   * @return the node that was created
   * @throws Exception if the DOM creation fails
   */
  public Element writeColorUIResource(Element parent, Object o, String name)
      throws Exception {
    
    Element           node;
    ColorUIResource   resource;

    // for debugging only
    if (DEBUG)
       trace(new Throwable(), name);
    
    m_CurrentNode = parent;
    
    resource = (ColorUIResource) o;
    node     = addElement(parent, name, resource.getClass().getName(), false);
    invokeWriteToXML(node, new Color(resource.getRGB()), VAL_COLOR);
    
    return node;
  }

  /**
   * builds the ColorUIResource from the given DOM node.
   * 
   * @param node the associated XML node
   * @return the instance created from the XML description
   * @throws Exception if instantiation fails
   */
  public Object readColorUIResource(Element node) throws Exception {
    Object      result;
    Vector      children;
    Element     child;
    int         i;
    String      name;
    Color       color;

    // for debugging only
    if (DEBUG)
       trace(new Throwable(), node.getAttribute(ATT_NAME));

    m_CurrentNode = node;
    
    result   = null;
    children = XMLDocument.getChildTags(node);
    color    = null;

    for (i = 0; i < children.size(); i++) {
      child = (Element) children.get(i);
      name  = child.getAttribute(ATT_NAME);

      if (name.equals(VAL_COLOR))
        color = (Color) invokeReadFromXML(child);
      else
        System.out.println("WARNING: '" + name
            + "' is not a recognized name for " + node.getAttribute(ATT_NAME) + "!");
    }
    
    result = new ColorUIResource(color);

    return result;
  }

  /**
   * adds the given FontUIResource to a DOM structure.
   * 
   * @param parent the parent of this object, e.g. the class this object is a member of
   * @param o the Object to describe in XML
   * @param name the name of the object
   * @return the node that was created
   * @throws Exception if the DOM creation fails
   */
  public Element writeFontUIResource(Element parent, Object o, String name)
      throws Exception {
    
    Element           node;
    FontUIResource    resource;

    // for debugging only
    if (DEBUG)
       trace(new Throwable(), name);
    
    m_CurrentNode = parent;
    
    resource = (FontUIResource) o;
    node     = addElement(parent, name, resource.getClass().getName(), false);
    invokeWriteToXML(node, new Font(resource.getName(), resource.getStyle(), resource.getSize()), VAL_COLOR);
    
    return node;
  }

  /**
   * builds the FontUIResource from the given DOM node.
   * 
   * @param node the associated XML node
   * @return the instance created from the XML description
   * @throws Exception if instantiation fails
   */
  public Object readFontUIResource(Element node) throws Exception {
    Object      result;
    Vector      children;
    Element     child;
    int         i;
    String      name;
    Font        font;

    // for debugging only
    if (DEBUG)
       trace(new Throwable(), node.getAttribute(ATT_NAME));

    m_CurrentNode = node;
    
    result   = null;
    children = XMLDocument.getChildTags(node);
    font     = null;

    for (i = 0; i < children.size(); i++) {
      child = (Element) children.get(i);
      name  = child.getAttribute(ATT_NAME);

      if (name.equals(VAL_FONT))
        font = (Font) invokeReadFromXML(child);
      else
        System.out.println("WARNING: '" + name
            + "' is not a recognized name for " + node.getAttribute(ATT_NAME) + "!");
    }
    
    result = new FontUIResource(font);

    return result;
  }

  /**
   * adds the given BeanInstance to a DOM structure.
   * 
   * @param parent the parent of this object, e.g. the class this object is a member of
   * @param o the Object to describe in XML
   * @param name the name of the object
   * @return the node that was created
   * @throws Exception if the DOM creation fails
   */
  public Element writeBeanInstance(Element parent, Object o, String name)
      throws Exception {
    
    Element         node;
    BeanInstance    beaninst;

    // for debugging only
    if (DEBUG)
       trace(new Throwable(), name);
    
    m_CurrentNode = parent;
    
    beaninst = (BeanInstance) o;
    node     = addElement(parent, name, beaninst.getClass().getName(), false);

    writeIntToXML(node, m_BeanInstances.indexOf(beaninst), VAL_ID);
    writeIntToXML(node, beaninst.getX() + beaninst.getWidth()  / 2, VAL_X);   // x is thought to be in the center?
    writeIntToXML(node, beaninst.getY() + beaninst.getHeight() / 2, VAL_Y);   // y is thought to be in the center?
    invokeWriteToXML(node, beaninst.getBean(), VAL_BEAN);
    
    return node;
  }

  /**
   * builds the BeanInstance from the given DOM node.
   * 
   * @param node the associated XML node
   * @return the instance created from the XML description
   * @throws Exception if instantiation fails
   */
  public Object readBeanInstance(Element node) throws Exception {
    Object          result;
    Vector          children;
    Element         child;
    String          name;
    int             i;
    int             x;
    int             y;
    int             id;
    Object          bean;
    BeanVisual      visual;
    BeanInstance    beaninst;

    // for debugging only
    if (DEBUG)
       trace(new Throwable(), node.getAttribute(ATT_NAME));

    m_CurrentNode = node;
    
    result   = null;
    children = XMLDocument.getChildTags(node);
    id       = -1;
    x        = 0;
    y        = 0;
    bean     = null;

    for (i = 0; i < children.size(); i++) {
      child = (Element) children.get(i);
      name  = child.getAttribute(ATT_NAME);

      if (name.equals(VAL_ID))
        id = readIntFromXML(child);
      else if (name.equals(VAL_X))
        x = readIntFromXML(child);
      else if (name.equals(VAL_Y))
        y = readIntFromXML(child);
      else if (name.equals(VAL_BEAN))
        bean = invokeReadFromXML(child);
      else
        System.out.println("WARNING: '" + name
            + "' is not a recognized name for " + node.getAttribute(ATT_NAME) + "!");
    }
    
    result   = new BeanInstance(m_BeanLayout, bean, x, y);
    beaninst = (BeanInstance) result;
    
    // set parent of BeanVisual
    if (beaninst.getBean() instanceof weka.gui.beans.Visible) {
      visual = ((Visible) beaninst.getBean()).getVisual();
      visual.setSize(visual.getPreferredSize());
      if (visual.getParent() == null) {
        ((JPanel) beaninst.getBean()).add(visual);
      }
    }
    
    // no IDs -> get next null position
    if (id == -1) {
      for (i = 0; i < m_BeanInstances.size(); i++) {
        if (m_BeanInstances.get(i) == null) {
          id = ((Integer) m_BeanInstancesID.get(i)).intValue();
          break;
        }
      }
    }
    // get position for id
    i = m_BeanInstancesID.indexOf(new Integer(id));

    // keep track of the BeanInstances for reading the connections later on
    m_BeanInstances.set(i, result);

    // no current MetaBean
    m_CurrentMetaBean = null;
    
    return result;
  }

  /**
   * adds the given BeanConncetion to a DOM structure.
   * 
   * @param parent the parent of this object, e.g. the class this object is a member of
   * @param o the Object to describe in XML
   * @param name the name of the object
   * @return the node that was created
   * @throws Exception if the DOM creation fails
   */
  public Element writeBeanConnection(Element parent, Object o, String name)
    throws Exception {
    
    Element           node;
    BeanConnection    beanconn;
    int               source;
    int               target;
    int               sourcePos;
    int               targetPos;

    // for debugging only
    if (DEBUG)
       trace(new Throwable(), name);
    
    m_CurrentNode = parent;
    
    beanconn = (BeanConnection) o;
    node     = null;

    // get position
    sourcePos = m_BeanInstances.indexOf(beanconn.getSource());
    targetPos = m_BeanInstances.indexOf(beanconn.getTarget());
    
    // get id (if Connection is from a Bean in the UserToolBar, it's not listed! -> ignore it)
    if ( (sourcePos > -1) && (targetPos > -1) ) {
      source = ((Integer) m_BeanInstancesID.get(sourcePos)).intValue();
      target = ((Integer) m_BeanInstancesID.get(targetPos)).intValue();
    }
    else {
       source = -1;
       target = -1;
    }
    
    // connection exists in the layout?
    if ( (source > -1) && (target > -1) ) {
      node = addElement(parent, name, beanconn.getClass().getName(), false);
  
      writeIntToXML(node, source, VAL_SOURCEID);
      writeIntToXML(node, target, VAL_TARGETID);
      invokeWriteToXML(node, beanconn.getEventName(), VAL_EVENTNAME);
      writeBooleanToXML(node, beanconn.isHidden(), VAL_HIDDEN);
    }
    
    return node;
  }

  /**
   * builds the BeanConnection from the given DOM node.
   * 
   * @param node the associated XML node
   * @return the instance created from the XML description
   * @throws Exception if instantiation fails
   */
  public Object readBeanConnection(Element node) throws Exception {
    Object                  result;
    Vector                  children;
    Element                 child;
    String                  name;
    int                     i;
    int                     source;
    int                     target;
    int                     sourcePos;
    int                     targetPos;
    String                  event;
    boolean                 hidden;

    // for debugging only
    if (DEBUG)
       trace(new Throwable(), node.getAttribute(ATT_NAME));

    m_CurrentNode = node;
    
    result   = null;
    children = XMLDocument.getChildTags(node);
    source   = 0;
    target   = 0;
    event    = "";
    hidden   = false;

    for (i = 0; i < children.size(); i++) {
      child = (Element) children.get(i);
      name  = child.getAttribute(ATT_NAME);

      if (name.equals(VAL_SOURCEID))
        source = readIntFromXML(child);
      else if (name.equals(VAL_TARGETID))
        target = readIntFromXML(child);
      else if (name.equals(VAL_EVENTNAME))
        event = (String) invokeReadFromXML(child);
      else if (name.equals(VAL_HIDDEN))
        hidden = readBooleanFromXML(child);
      else
        System.out.println("WARNING: '" + name
            + "' is not a recognized name for " + node.getAttribute(ATT_NAME) + "!");
    }

    // get position of id
    sourcePos = m_BeanInstancesID.indexOf(new Integer(source));
    targetPos = m_BeanInstancesID.indexOf(new Integer(target));
    
    // do we currently ignore the connections?
    // Note: necessary because of the MetaBeans
    if (m_IgnoreBeanConnections) {
      addBeanConnectionRelation(m_CurrentMetaBean, sourcePos + "," + targetPos + "," + event + "," + hidden);
      return result;
    }

    // generate it normally
    result = createBeanConnection(sourcePos, targetPos, event, hidden);

    return result;
  }
  
  /**
   * adds the given Loader (a bean) to a DOM structure.
   * 
   * @param parent the parent of this object, e.g. the class this object is a member of
   * @param o the Object to describe in XML
   * @param name the name of the object
   * @return the node that was created
   * @throws Exception if the DOM creation fails
   */
  public Element writeBeanLoader(Element parent, Object o, String name)