ExpressionBuilder.java

/**
* 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) since 2004 at Multimedia- & E-Learning Services (MELS),<br>
* University of Zurich, Switzerland.
* <hr>
* <a href="http://www.openolat.org">
* OpenOLAT - Online Learning and Training</a><br>
* This file has been modified by the OpenOLAT community. Changes are licensed
* under the Apache 2.0 license as the original file.
*/

package org.olat.ims.qti.process.elements;

import org.dom4j.Element;

/**
 * @author Felix Jost
 */
public interface ExpressionBuilder {
	/**
	 * 
	 * @param selectionElement
	 * @param expr
	 * @param not_switch true if parent or ancestor was a not so that we need to "not" our result.
	 * reason: not (a and b) : xpath, which we use as search engine, doesn't have a not, so we transform it to
	 * (not a) and (not b), where not a is know for all elements: or -> and, and -> or, not -> nothing, = -> != , > -> <= and so on
	 */
	public void buildXPathExpression(Element selectionElement, StringBuilder expr, boolean not_switch, boolean use_switch);

}