Package org.olat.core.util.xml

Source Code of org.olat.core.util.xml.Util

/**
* OLAT - Online Learning and Training<br>
* http://www.olat.org
* <p>
* Licensed under the Apache License, Version 2.0 (the "License"); <br>
* you may not use this file except in compliance with the License.<br>
* You may obtain a copy of the License at
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* Unless required by applicable law or agreed to in writing,<br>
* software distributed under the License is distributed on an "AS IS" BASIS, <br>
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. <br>
* See the License for the specific language governing permissions and <br>
* limitations under the License.
* <p>
* Copyright (c) 1999-2006 at Multimedia- & E-Learning Services (MELS),<br>
* University of Zurich, Switzerland.
* <p>
*/
package org.olat.core.util.xml;

import java.beans.XMLEncoder;
import java.io.BufferedOutputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.util.Iterator;
import java.util.List;

import org.dom4j.Element;
import org.olat.core.logging.OLATRuntimeException;

/**
* enclosing_type Description: <br>
*
* @author Felix Jost
*/
public class Util {

  /**
   * @param o
   * @param file
   */
  public static void writeObjectAsXML(Object o, String file) {

    XMLEncoder e;
    try {
      e = new XMLEncoder(new BufferedOutputStream(new FileOutputStream(file)));
      e.writeObject(o);
      e.close();
    } catch (FileNotFoundException e1) {
      throw new OLATRuntimeException(Util.class, "Error writing object to XML.", e1);
    }

  }

  /**
   * @param elem
   * @return String
   */
  public static String getTextsOnly(Element elem) {
    StringBuilder sb = new StringBuilder();
    visit(sb, elem);
    return sb.toString();
  }

  private static void visit(StringBuilder sb, Element elem) {
    sb.append(elem.getTextTrim());
    List children = elem.elements();
    for (Iterator it_ch = children.iterator(); it_ch.hasNext();) {
      Element element = (Element) it_ch.next();
      visit(sb, element);
    }
  }

}
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