/**
* <a href="http://www.openolat.org">
* OpenOLAT - Online Learning and Training</a><br>
* <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 the
* <a href="http://www.apache.org/licenses/LICENSE-2.0">Apache homepage</a>
* <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>
* Initial code contributed and copyrighted by<br>
* frentix GmbH, http://www.frentix.com
* <p>
*/
package org.olat.core.util.filter;
/**
* Description:<br>
* The Filter takes a String as an input and returns the filtered value
*
* <P>
* Initial Date: 13.07.2009 <br>
*
* @author gnaegi
*/
public interface Filter {
/**
* Filter the original value and return the result. If the original value is
* NULL, the filter method will return NULL
*
* @param original
* @return
*/
public String filter(String original);
}