/*******************************************************************************
 * Copyright (c) 2007, 2009 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.resource.java;

import org.eclipse.jdt.core.dom.CompilationUnit;
import org.eclipse.jpt.core.utility.TextRange;

/**
 * Common protocol among
 *     javax.persistence.Column
 *     javax.persistence.JoinColumn
 *     javax.persistence.DiscriminatorColumn
 *     javax.persistence.PrimaryKeyJoinColumn.
 * 
 * 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 NamedColumnAnnotation
	extends Annotation
{
	/**
	 * Return true if the annotation exists in Java, false if it does not.
	 */
	boolean isSpecified();

	/**
	 * Corresponds to the 'name' element of the *Column annotation.
	 * Return null if the element does not exist in Java.
	 */
	String getName();
		String NAME_PROPERTY = "name"; //$NON-NLS-1$
	
	/**
	 * Corresponds to the 'name' element of the *Column annotation.
	 * Set to null to remove the element.
	 */
	void setName(String name);
		
	/**
	 * Return the {@link TextRange} for the 'name' element. If the element
	 * does not exist return the {@link TextRange} for the *Column annotation.
	 */
	TextRange getNameTextRange(CompilationUnit astRoot);

	/**
	 * Return whether the specified position touches the 'name' element.
	 * Return false if the element does not exist.
	 */
	boolean nameTouches(int pos, CompilationUnit astRoot);


	/**
	 * Corresponds to the 'columnDefinition' element of the *Column annotation.
	 * Return null if the element does not exist in Java.
	 */
	String getColumnDefinition();
		String COLUMN_DEFINITION_PROPERTY = "columnDefinition"; //$NON-NLS-1$
	
	/**
	 * Corresponds to the 'columnDefinition' element of the *Column annotation.
	 * Set to null to remove the element.
	 */
	void setColumnDefinition(String columnDefinition);

	/**
	 * Return the {@link TextRange} for the 'columnDefinition' element. If the
	 * element does not exist return the {@link TextRange} for the *Column annotation.
	 */
	TextRange getColumnDefinitionTextRange(CompilationUnit astRoot);

}