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/*******************************************************************************
* Copyright (c) 2000, 2005 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.jst.ws.internal.consumption.codegen;
import java.util.Enumeration;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.wst.ws.internal.datamodel.BasicElement;
import org.eclipse.wst.ws.internal.datamodel.Rel;
/**
* Objects of this class represent a visitor.
* This vistor will visit elements in a model given a
* particular rel
* */
public class RelVisitor implements Visitor
{
// Copyright
public static final String copyright = "(c) Copyright IBM Corporation 2000, 2002.";
private int fElementCounter;
private int fTotalElements;
private String frelName;
/**
* Constructor.
*
*/
public RelVisitor (String relName)
{
frelName = relName;
}
public int getTotalElementsToVisit()
{
return fTotalElements;
}
public boolean isLastElement()
{
if(getTotalElementsToVisit() - presentElement() == 0) return true;
return false;
}
public int presentElement()
{
return fElementCounter;
}
public void initialize(VisitorAction va)
{
//implemented by subclasses
}
public IStatus run (Object sourceElement,VisitorAction vAction)
{
IStatus status = Status.OK_STATUS;
initialize(vAction);
vAction.setVisitor(this);
Rel rel = ((BasicElement)sourceElement).getRel(frelName);
//set some state data
fTotalElements = rel.getNumberOfTargetElements();
fElementCounter = 0;
Enumeration e = rel.getTargetElements();
while (e.hasMoreElements()){
BasicElement targetElement = (BasicElement)e.nextElement();
fElementCounter++;
initialize(vAction);
status = vAction.visit(targetElement);
}
return status;
}
}
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