Package org.jrobin.inspector

Source Code of org.jrobin.inspector.MainTreeModel

/*******************************************************************************
* Copyright (c) 2001-2005 Sasa Markovic and Ciaran Treanor.
* Copyright (c) 2011 The OpenNMS Group, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
*******************************************************************************/

package org.jrobin.inspector;

import org.jrobin.core.RrdDb;
import org.jrobin.core.RrdException;

import javax.swing.tree.DefaultTreeModel;
import javax.swing.tree.DefaultMutableTreeNode;
import java.io.IOException;
import java.io.File;

class MainTreeModel extends DefaultTreeModel {
  private static final long serialVersionUID = 1L;
  private static final DefaultMutableTreeNode INVALID_NODE =
      new DefaultMutableTreeNode("No valid RRD file specified");

  MainTreeModel() {
    super(INVALID_NODE);
  }

  boolean setFile(File file) {
    try {
      RrdDb rrd = new RrdDb(file.getAbsolutePath(), true);
      try {
        DefaultMutableTreeNode root = new DefaultMutableTreeNode(new RrdNode(rrd));
        int dsCount = rrd.getRrdDef().getDsCount();
        int arcCount = rrd.getRrdDef().getArcCount();
        for (int dsIndex = 0; dsIndex < dsCount; dsIndex++) {
          DefaultMutableTreeNode dsNode =
              new DefaultMutableTreeNode(new RrdNode(rrd, dsIndex));
          for (int arcIndex = 0; arcIndex < arcCount; arcIndex++) {
            DefaultMutableTreeNode arcNode =
                new DefaultMutableTreeNode(new RrdNode(rrd, dsIndex, arcIndex));
            dsNode.add(arcNode);
          }
          root.add(dsNode);
        }
        setRoot(root);
      }
      finally {
        rrd.close();
      }
      return true;
    }
    catch (IOException e) {
      setRoot(INVALID_NODE);
      Util.error(null, e);
    }
    catch (RrdException e) {
      setRoot(INVALID_NODE);
      Util.error(null, e);
    }
    return false;
  }
}
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