/*******************************************************************************
 * 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;

import java.util.ListIterator;

/**
 * 
 * 
 * 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 JoinTable extends Table
{
	RelationshipMapping getRelationshipMapping();
	
	
	// **************** join columns **************************************
	
	/**
	 * Return a list iterator of the join columns whether specified or default.
	 * This will not be null.
	 */
	<T extends JoinColumn> ListIterator<T> joinColumns();

	/**
	 * Return the number of join columns, both specified and default.
	 */
	int joinColumnsSize();
	
	/**
	 * Return a list iterator of the specified join columns.
	 * This will not be null.
	 */
	<T extends JoinColumn> ListIterator<T> specifiedJoinColumns();
		String SPECIFIED_JOIN_COLUMNS_LIST = "specifiedJoinColumns"; //$NON-NLS-1$
	
	/**
	 * Return the number of specified join columns.
	 */
	int specifiedJoinColumnsSize();

	/**
	 * Return the default join column or null.  A default join column
	 * only exists if there are no specified join columns.
	 */
	JoinColumn getDefaultJoinColumn();
		String DEFAULT_JOIN_COLUMN = "defaultJoinColumn"; //$NON-NLS-1$
		
	/**
	 * Add a specified join column to the join table return the object 
	 * representing it.
	 */
	JoinColumn addSpecifiedJoinColumn(int index);
	
	/**
	 * Remove the specified join column from the join table.
	 */
	void removeSpecifiedJoinColumn(int index);
	
	/**
	 * Remove the specified join column at the index from the join table.
	 */
	void removeSpecifiedJoinColumn(JoinColumn joinColumn);
	
	/**
	 * Move the specified join column from the source index to the target index.
	 */
	void moveSpecifiedJoinColumn(int targetIndex, int sourceIndex);
	
	boolean containsSpecifiedJoinColumns();
	

	// **************** inverse join columns **************************************
	
	/**
	 * Return a list iterator of the inverse join columns whether specified or default.
	 * This will not be null.
	 */
	<T extends JoinColumn> ListIterator<T> inverseJoinColumns();
	
	/**
	 * Return the number of inverse join columns, both specified and default.
	 */
	int inverseJoinColumnsSize();
	
	/**
	 * Return a list iterator of the specified inverse join columns.
	 * This will not be null.
	 */
	<T extends JoinColumn> ListIterator<T> specifiedInverseJoinColumns();
		String SPECIFIED_INVERSE_JOIN_COLUMNS_LIST = "specifiedInverseJoinColumns"; //$NON-NLS-1$
	
	/**
	 * Return the number of specified inverse join columns.
	 */
	int specifiedInverseJoinColumnsSize();

	/**
	 * Return the default inverse join column or null.  A default inverse join column
	 * only exists if there are no specified inverse join columns.
	 */
	JoinColumn getDefaultInverseJoinColumn();
		String DEFAULT_INVERSE_JOIN_COLUMN = "defaultInverseJoinColumn"; //$NON-NLS-1$
	
	/**
	 * Add a specified inverse join column to the join table return the object 
	 * representing it.
	 */
	JoinColumn addSpecifiedInverseJoinColumn(int index);
	
	/**
	 * Remove the specified inverse join column from the join table.
	 */
	void removeSpecifiedInverseJoinColumn(int index);
	
	/**
	 * Remove the specified inverse join column at the index from the join table.
	 */
	void removeSpecifiedInverseJoinColumn(JoinColumn joinColumn);
	
	
	/**
	 * Move the specified inverse join column from the source index to the target index.
	 */
	void moveSpecifiedInverseJoinColumn(int targetIndex, int sourceIndex);

	boolean containsSpecifiedInverseJoinColumns();

}