/*
*  @(#) Relative_Point  0_97_0  08/07/2009
* * see Annex C of the SOPES IEDM Specification 
* Relative_Point oclConstructionSequence for the key mapping across steps
* for this Transactional Artifact

*/ 

package org.omg.sopes0_97_0.PSM.Transactional;
import org.omg.sopes0_97_0.PSM.Tuple;
import org.omg.sopes0_97_0.PSM.Data;
import org.omg.sopes0_97_0.PSM.Multiplicity;
import org.omg.sopes0_97_0.PSM.Wrapper.*;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Set;

/**
*
 * Relative_Point
* @author ASMG 
* @version 0_97_0  08/07/2009
*/

public class Relative_Point {

	public Relative_Point ( String identifier, Data data ) {

		m_data = data;


		Collection<String> nextIdentifiers = new ArrayList<String>();
		nextIdentifiers.add(identifier);
		Collection col;
	
		Collection startPointCol = buildRelativePoint( nextIdentifiers );   // Identifier always mandatory
		if ( startPointCol.isEmpty() ) {
			throw new IllegalArgumentException();
		}
		m_step0.addAll( startPointCol );
		includeTargetIdentifiers(nextIdentifiers);

		RelativePoint relativePoint = (RelativePoint)startPointCol.iterator().next();


		nextIdentifiers = m_data.getTargetIdentifiers( getSourceIdentifiers(), RelativeCoordinateSystem.getEntityIdentifier() );
		col = buildRelative_Coordinate_System( nextIdentifiers );
		if ( col.size() < m_multiplicity1.getMin() || col.size() > m_multiplicity1.getMax() ) {
			throw new IllegalArgumentException();
		}
		m_step1.addAll( col );
		includeTargetIdentifiers(nextIdentifiers);


		nextIdentifiers = m_data.getTargetIdentifiers( getSourceIdentifiers(), Point.getEntityIdentifier() );
		col = buildPoint( nextIdentifiers );
		if ( col.size() < m_multiplicity2.getMin() || col.size() > m_multiplicity2.getMax() ) {
			throw new IllegalArgumentException();
		}
		m_step2.addAll( col );
		includeTargetIdentifiers(nextIdentifiers);


		nextIdentifiers = m_data.getTargetIdentifiers( getSourceIdentifiers(), Location.getEntityIdentifier() );
		col = buildLocation( nextIdentifiers );
		if ( col.size() < m_multiplicity3.getMin() || col.size() > m_multiplicity3.getMax() ) {
			throw new IllegalArgumentException();
		}
		m_step3.addAll( col );
		includeTargetIdentifiers(nextIdentifiers);
	}

	/*
	* Multiplicity min: 1	max : 1
	*/
	private Collection buildRelativePoint( Collection<String> identifiers ) {
		Collection col = new ArrayList();
		Iterator<String> sit = identifiers.iterator();
		String identifier;
		Collection<Tuple> rows = new ArrayList<Tuple>();
		while( sit.hasNext() ) {
			identifier = sit.next();
			rows.addAll(m_data.extractRows( RelativePoint.getEntityIdentifier(), identifier ) );
		}

		Iterator<Tuple> it = rows.iterator();
		while(it.hasNext()) {
			col.add(new RelativePoint(it.next()) );
		}
		return col;
	}

	/*
	* Multiplicity min: 1	max : 1
	*/
	private Collection  buildRelative_Coordinate_System(Collection<String> identifiers ) {
		Collection col = new ArrayList();
		Iterator<String> sit = identifiers.iterator();
		String identifier;
		Collection<Tuple> rows = new ArrayList<Tuple>();
		while( sit.hasNext() ) {
			identifier = sit.next();
			try {
				Relative_Coordinate_System relative_Coordinate_System = new Relative_Coordinate_System( identifier, m_data );
				col.add(relative_Coordinate_System);
			} catch( IllegalArgumentException ie ) {
 			/* implementation based response  */ 
			}
		}
		return col;

	}

	/*
	* Multiplicity min: 1	max : 1
	*/
	private Collection buildPoint( Collection<String> identifiers ) {
		Collection col = new ArrayList();
		Iterator<String> sit = identifiers.iterator();
		String identifier;
		Collection<Tuple> rows = new ArrayList<Tuple>();
		while( sit.hasNext() ) {
			identifier = sit.next();
			rows.addAll(m_data.extractRows( Point.getEntityIdentifier(), identifier ) );
		}

		Iterator<Tuple> it = rows.iterator();
		while(it.hasNext()) {
			col.add(new Point(it.next()) );
		}
		return col;
	}

	/*
	* Multiplicity min: 1	max : 1
	*/
	private Collection buildLocation( Collection<String> identifiers ) {
		Collection col = new ArrayList();
		Iterator<String> sit = identifiers.iterator();
		String identifier;
		Collection<Tuple> rows = new ArrayList<Tuple>();
		while( sit.hasNext() ) {
			identifier = sit.next();
			rows.addAll(m_data.extractRows( Location.getEntityIdentifier(), identifier ) );
		}

		Iterator<Tuple> it = rows.iterator();
		while(it.hasNext()) {
			col.add(new Location(it.next()) );
		}
		return col;
	}

	private Collection<String> getSourceIdentifiers(){
		/* no implement
		 see Annex C Relative_Point oclConstructionSequence for further information
		 */
		 return null;
	}

	private void includeTargetIdentifiers(Collection<String> nextIdentifiers){
		/* no implement 
		Record the variable for potential use by the method getSourceIdentifiers()
		 */
	}

	public boolean isWatchpoint(){
		return m_isWatchpoint;
	}


	private Data m_data = null;

	private final boolean m_isWatchpoint = false;

	private Multiplicity m_multiplicity0 = new Multiplicity(1, 1);
	private Multiplicity m_multiplicity1 = new Multiplicity(1, 1);
	private Multiplicity m_multiplicity2 = new Multiplicity(1, 1);
	private Multiplicity m_multiplicity3 = new Multiplicity(1, 1);

	private Set m_step0 = new HashSet();
	private Set m_step1 = new HashSet();
	private Set m_step2 = new HashSet();
	private Set m_step3 = new HashSet();

}