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From t...@apache.org
Subject cvs commit: db-ojb/src/jdori/org/apache/ojb/jdori/sql Helper.java
Date Fri, 05 Dec 2003 22:43:34 GMT
thma        2003/12/05 14:43:34

  Added:       src/jdori/org/apache/ojb/jdori/sql Helper.java
  Log:
  Add a little helper class to factor out utility methods
  
  Revision  Changes    Path
  1.1                  db-ojb/src/jdori/org/apache/ojb/jdori/sql/Helper.java
  
  Index: Helper.java
  ===================================================================
  package org.apache.ojb.jdori.sql;
  
  import java.lang.reflect.Field;
  
  import javax.jdo.JDOFatalInternalException;
  
  import com.sun.jdori.StateManagerInternal;
  import com.sun.jdori.common.model.jdo.JDOModelFactoryImpl;
  import com.sun.jdori.common.model.runtime.RuntimeJavaModelFactory;
  import com.sun.jdori.model.java.JavaModel;
  import com.sun.jdori.model.java.JavaModelFactory;
  import com.sun.jdori.model.jdo.JDOClass;
  import com.sun.jdori.model.jdo.JDOModel;
  
  /* ====================================================================
   * The Apache Software License, Version 1.1
   *
   * Copyright (c) 2001 The Apache Software Foundation.  All rights
   * reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   *
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in
   *    the documentation and/or other materials provided with the
   *    distribution.
   *
   * 3. The end-user documentation included with the redistribution,
   *    if any, must include the following acknowledgment:
   *       "This product includes software developed by the
   *        Apache Software Foundation (http://www.apache.org/)."
   *    Alternately, this acknowledgment may appear in the software itself,
   *    if and wherever such third-party acknowledgments normally appear.
   *
   * 4. The names "Apache" and "Apache Software Foundation" and
   *    "Apache ObjectRelationalBridge" must not be used to endorse or promote products
   *    derived from this software without prior written permission. For
   *    written permission, please contact apache@apache.org.
   *
   * 5. Products derived from this software may not be called "Apache",
   *    "Apache ObjectRelationalBridge", nor may "Apache" appear in their name, without
   *    prior written permission of the Apache Software Foundation.
   *
   * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
   * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
   * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
   * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
   * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
   * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   * ====================================================================
   *
   * This software consists of voluntary contributions made by many
   * individuals on behalf of the Apache Software Foundation.  For more
   * information on the Apache Software Foundation, please see
   * <http://www.apache.org/>.
   */
  
  
  
  /**
   * @author Thomas Mahler
   *
   * this is a helper class providing convenience methods.
   */
  class Helper
  {
  	static JDOClass getJDOClass(Class c)
  	{
  		JDOClass rc = null;
  		try
  		{
  			ClassLoader cl = c.getClassLoader();
  			JavaModelFactory javaModelFactory = RuntimeJavaModelFactory.getInstance();
  			JavaModel javaModel = javaModelFactory.getJavaModel(c.getClassLoader());
  			JDOModel m = JDOModelFactoryImpl.getInstance().getJDOModel(javaModel);
  			rc = m.getJDOClass(c.getName());
  		}
  		catch (RuntimeException ex)
  		{
  			throw new JDOFatalInternalException("Not a JDO class: " + c.getName()); 
  		}
  		return rc;
  	}
  
  	/**
  	 * @return the LifeCycleState of a StateManager instance
  	 */
  	static Object getLCState(StateManagerInternal sm)
  	{
  		// unfortunately the LifeCycleState classes are package private.
  		// so we have to do some dirty reflection hack to access them
  		try
  		{
  			Field myLC = sm.getClass().getDeclaredField("myLC");
  			myLC.setAccessible(true);
  			return myLC.get(sm);
  		}
  		catch (NoSuchFieldException e)
  		{
  			return e;
  		}
  		catch (IllegalAccessException e)
  		{
  			return e;
  		}	
  	}
  
  }
  
  
  

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