stringmodelpersister.java

来自「Novocode的 SWT 控件框架 丰富了MDI功能」· Java 代码 · 共 46 行

/*******************************************************************************
 * Copyright (c) 2004 Stefan Zeiger 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.novocode.com/legal/epl-v10.html
 * 
 * Contributors:
 *     Stefan Zeiger ([e-mail]) - initial API and implementation
 *******************************************************************************/

package com.novocode.naf.persist;

import org.w3c.dom.Document;
import org.w3c.dom.Element;

import com.novocode.naf.app.NAFException;
import com.novocode.naf.model.IObjectModel;
import com.novocode.naf.xml.DOMUtil;


/**
 * Persister for string models.
 *
 * @author Stefan Zeiger ([e-mail])
 * @since Oct 13, 2004
 * @version $Id: StringModelPersister.java,v 1.3 2004/12/16 14:52:04 szeiger Exp $
 */

public class StringModelPersister<T extends IObjectModel<String>> implements IPersister<T>
{
  public void toModel(Element e, T model) throws NAFException
  {
    if("null".equals(e.getLocalName())) model.setValue(null);
    else model.setValue(DOMUtil.getText(e));
  }


  public Element toDOM(Document doc, T model) throws NAFException
  {
    String val = model.getValue();
    if(val == null) return doc.createElement("null");
    return DOMUtil.createTextElement(doc, "string", val);
  }
}