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/*******************************************************************************
 * Copyright (c) 2007, 2008 Oracle. All rights reserved.
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v1.0, which accompanies this distribution
 * and is available at http://www.eclipse.org/legal/epl-v10.html.
 * 
 * Contributors:
 *     Oracle - initial API and implementation
 ******************************************************************************/
package org.eclipse.jpt.core.context;

/**
 * 
 * 
 * Provisional API: This interface is part of an interim API that is still
 * under development and expected to change significantly before reaching
 * stability. It is available at this early stage to solicit feedback from
 * pioneering adopters on the understanding that any code that uses this API
 * will almost certainly be broken (repeatedly) as the API evolves.
 */
public interface BaseOverride extends JpaContextNode
{

	String getName();
	void setName(String value);
		String NAME_PROPERTY = "nameProperty";
	
	/**
	 * Return true if override exists as specified on the owning object, or false
	 * if the override is "gotten for free" as a result of defaults calculation
	 */
	boolean isVirtual();

	BaseOverride setVirtual(boolean virtual);
	
	interface Owner
	{
		/**
		 * Return the type mapping that this override is contained in
		 * @return
		 */
		TypeMapping getTypeMapping();

		/**
		 * Return whether the given override is virtual. Virtual means that
		 * it is not specified, but defaulted in from the mapped superclass or
		 * embeddable.
		 */
		boolean isVirtual(BaseOverride override);
		
		/**
		 * If false, add the give override as a specified override and remove
		 * it from the list of virtual overrides.  If true, then remove it
		 * from the specified overrides and add it to the virtual overrides
		 * as applicable.  Return the new override (whether virtual or specified)
		 */
		BaseOverride setVirtual(boolean virtual, BaseOverride override);	
	}
}

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