relationtype.java

toocom源代码,主要应用在本体匹配方面!

package toocom.ocgl;

import java.util.*;
import javax.swing.*;
import java.awt.*;
import java.awt.geom.*;
import java.awt.font.*;

/**
 * This class represents the relation types in the ontology. A relation type has a signature
 * and some properties.
 *
 * @author Fr閐閞ic F黵st
 */
public class RelationType extends ConceptualPrimitive{

	private Signature signature;
	
	/** Creates a generic relation type with the given arity of the signature and the given terms.
	 *  This method can throws an IndexOutOfBoundsException if the arity is less than 2.  
	 */
	public RelationType(int arity,Terms terms) throws IndexOutOfBoundsException{
		super(terms);
		this.signature = new Signature(arity);
	}
	
	/** Creates a generic relation type with the given arity of the signature and an undefined terms.
	 *  This method can throws an IndexOutOfBoundsException if the arity is less than 2.  
	 */
	public RelationType(int arity) throws IndexOutOfBoundsException{
		super(Terms.getUndefinedTerms());
		this.signature = new Signature(arity);
	}
	
	/** Returns a binary relation type with an undefined label. */
	public static RelationType getUndefinedRelationType(){
		return new RelationType(2);
	}
	
	public String toString(Language l){
		return (this.getTerm(l).concat(this.getSignature().toString(l)));
	}
	
	public void setSignature(Signature signature){
		this.signature = signature;
	}
	
	/** Returns the index of the given concept type in the signature of the relation or -1 
	 *  if the concept type does not appear in the signature. */
	public int linkConceptType(ConceptType ct){
		for(int i = 1;i < (this.getArity() + 1);i ++){
			ConceptType contyp = this.getSignature().getConceptType(i);
			if((contyp != null) && contyp.equals(ct)) return i;
		}
		return -1;
	}
	
	public LinkedList getLinkedConceptTypes(){
		LinkedList result = new LinkedList();
		for(int i = 1;i <= this.getArity();i ++){
			result.add(this.signature.getConceptType(i));
		}
		return result;
	}
	
	public Signature getSignature(){
		return this.signature;
	}

	public void setArity(int arity){
		if(this.signature.getArity() != arity){
			this.signature.setArity(arity);
		}
	}
	
	public int getArity(){
		return this.signature.getArity();
	}
	
	/** Returns the bounds of the image according to the font size of the given Graphics. */
	public RectangularShape getBounds(Graphics g,Language l){
		String s = this.toString(l);
		return GraphicsToolkit.getEllipticalBounds(g,s,new Point(this.x,this.y));
	}
	
	/** Only draw the lines which represent the is-a link between the relation type and his children. */
	public void paintChildrenLinks(Graphics g,Language l){
		g.setColor(CGConstants.IS_A_LINK_COLOR);
		for(Iterator i = this.getChildren().iterator();i.hasNext();){
			RelationType rtTemp = (RelationType) i.next();
			Point p1 = rtTemp.getCenter();
			Point p2 = this.getCenter();
			GraphicsToolkit.paintArrowLine(g,p1,p2);
		}	
	}
	
	/** Paint the relation type with its label in an elliptical shape. */
	public void paintObject(Graphics g,Language l){
		this.paintObject(g,CGConstants.RELATION_TYPE_COLOR,CGConstants.RELATION_TYPE_BORDER_COLOR,CGConstants.SELECTED_RELATION_TYPE_BORDER_COLOR,CGConstants.HIGHLIGHTED_RELATION_TYPE_COLOR,CGConstants.RELATION_TYPE_TEXT_COLOR,l);
	}
	
	/** Destroy the relation type and the link between it and others conceptual primitives. */
	public void destroy(Ontology onto){
		super.destroy(onto);
		for(Iterator i = onto.getRelations().iterator();i.hasNext();){
			Relation r = (Relation) i.next();
			if((r.getType() != null) && r.getType().equals(this)) r.setType(RelationType.getUndefinedRelationType());
		}
		onto.removeRelationType(this);
	}
	
}