JGraphSQLBusinessModel.java :  » Graphic-Library » jgraph » com » jgraph » example » adapter » Java Open Source

/*
 * $Id: JGraphSQLBusinessModel.java,v 1.2 2005/08/09 08:40:47 david Exp $
 * 
 * Copyright (c) 2001-2005, Gaudenz Alder
 * 
 * See LICENSE file in distribution for licensing details of this source file
 */
package com.jgraph.example.adapter;

import java.sql.SQLException;
import java.util.Collection;
import java.util.List;

import org.jgraph.graph.AttributeMap;

/**
 * Allows to set the properties of user objects via the edit method's nested
 * argument. You must add (userObject, Map) pairs to the nested map for each
 * user object's new attributes.
 */
public class JGraphSQLBusinessModel extends JGraphAdapterModel {

  public JGraphSQLBusinessModel() {
    super();
  }

  /**
   * @param roots
   * @param attributes
   */
  public JGraphSQLBusinessModel(List roots, AttributeMap attributes) {
    this(roots, attributes, null);
  }

  /**
   * @param roots
   * @param attributes
   * @param backend
   */
  public JGraphSQLBusinessModel(List roots, AttributeMap attributes,
      JGraphAdapterBackend backend) {
    super(roots, attributes, backend);
  }

  public void addProperty(Object cell, Object key, Object value) {
    if (key != null && value != null) {
      try {
        Object userObj = getValue(cell);
        if (userObj instanceof JGraphSQLEntity
            && getBackend() instanceof JGraphSQLBackend) {
          ((JGraphSQLBackend) getBackend()).propertyAdded(
              (JGraphSQLEntity) userObj, key, value);
          fireCommit();
        }
      } catch (Exception e) {
        e.printStackTrace();
        try {
          fireRollback();
        } catch (Exception e1) {
          e1.printStackTrace();
        }
      }
    }
    super.addProperty(cell, key, value);
  }

  public Collection findVertices(String query, Object parent)
      throws SQLException {
    return ((JGraphSQLBackend) getBackend()).findVertices(this, query,
        parent);
  }

  public Collection findEdges(String query, Object parent, Object source,
      Object target, boolean directed) throws SQLException {
    return ((JGraphSQLBackend) getBackend()).findEdges(this, query, parent,
        source, target, directed);
  }
}