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/*******************************************************************************
* Copyright (c) 2000, 2004 IBM Corporation and others.
* 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:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.wst.ws.internal.datamodel;
import java.util.Enumeration;
import java.util.Vector;
public class BasicRel implements Rel
{
// Copyright
public static final String copyright = "(c) Copyright IBM Corporation 2000, 2002.";
private String fName;
private Element fSourceElement;
private Vector fConnections;
public BasicRel ( String name, Element sourceElement )
{
fName = name;
fSourceElement = sourceElement;
fConnections = new Vector();
}
public String getName ()
{
return fName;
}
public Element getSourceElement ()
{
return fSourceElement;
}
public Enumeration getTargetElements ()
{
return new ElementEnumeration(fConnections.elements());
}
public int getNumberOfTargetElements ()
{
return fConnections.size();
}
public void addConnection ( Connection connection )
{
fConnections.addElement(connection);
}
public boolean removeConnection ( Connection connection )
{
return fConnections.removeElement(connection);
}
public Connection getConnectionTo ( Element targetElement )
{
Enumeration e = fConnections.elements();
while (e.hasMoreElements())
{
Connection c = (Connection)e.nextElement();
if (c.getElement() == targetElement) return c;
}
return null;
}
public String toString ()
{
return getName();
}
private class ElementEnumeration implements Enumeration
{
private Enumeration fConnectionEnumeration;
public ElementEnumeration ( Enumeration connectionEnumeration )
{
fConnectionEnumeration = connectionEnumeration;
}
public boolean hasMoreElements ()
{
return fConnectionEnumeration.hasMoreElements();
}
public Object nextElement ()
{
return ((Connection)fConnectionEnumeration.nextElement()).getElement();
}
}
}
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