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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.Hashtable;
import java.util.Vector;
public class BasicModel implements Model
{
// Copyright
public static final String copyright = "(c) Copyright IBM Corporation 2000, 2002.";
private String fName;
private Hashtable fElements;
private Element fRoot;
//This is used by the MUID
private int fUniqueNumberCounter;
public BasicModel ( String name )
{
fName = name;
fElements = new Hashtable();
fRoot = null;
fUniqueNumberCounter = 0;
}
public void setName ( String name )
{
fName = name;
}
public String getName ()
{
return fName;
}
/*
* simple counter that increments each call
*/
public int getUniqueNumber()
{
fUniqueNumberCounter++;
return fUniqueNumberCounter;
}
/*
* This will use a unique number and append it to the end of the name
* @param String name of the element
* @return String MUID
*/
public String makeMUID(String name)
{
String num = String.valueOf(getUniqueNumber());
String muid = name + num;
return muid;
}
public boolean setRootElement ( Element root )
{
if (root.getModel() == null)
addElement(root);
else if (root.getModel() != this)
return false;
fRoot = root;
return true;
}
public Element getRootElement ()
{
if (fRoot == null) fRoot = getFirstElement();
return fRoot;
}
/**
* Get the elements that have this name
* @param String name the name of the element
* @return Vector a vector of elements that have this name
* These elements may be of different types
**/
public Vector getElementsByName(String name)
{
Vector vector = new Vector();
Enumeration e = fElements.keys();
while (e.hasMoreElements()){
Element element = (Element)e.nextElement();
if (element.getName().equals(name)) vector.addElement(element);
}
return vector;
}
public boolean addElement ( Element element )
{
if (element.getModel() != null) return false;
fElements.put(element,element);
return true;
}
public boolean removeElement ( Element element )
{
if (element.getModel() != this) return false;
element.disconnectAll();
if (fRoot == element) fRoot = null;
return (fElements.remove(element) == element);
}
public Enumeration getElements ()
{
return fElements.elements();
}
public int getNumberOfElements ()
{
return fElements.size();
}
public boolean containsElement ( Element element )
{
return fElements.contains(element);
}
private Element getFirstElement ()
{
Enumeration e = getElements();
return (e.hasMoreElements() ? (Element)e.nextElement() : null);
}
public String toString ()
{
return getName();
}
}
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