/*************************GO-LICENSE-START*********************************
* Copyright 2014 ThoughtWorks, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*************************GO-LICENSE-END***********************************/
package com.thoughtworks.go.config.validation;
import com.thoughtworks.go.config.registry.ConfigElementImplementationRegistry;
import com.thoughtworks.go.util.ConfigUtil;
import org.jdom2.Element;
import org.jdom2.filter.Filters;
import org.jdom2.xpath.XPathFactory;
import java.util.List;
public class UniqueOnCancelValidator implements GoConfigXMLValidator {
public void validate(Element element, ConfigElementImplementationRegistry registry) throws Exception {
XPathFactory xPathFactory = XPathFactory.instance();
List<String> tasks = ConfigUtil.allTasks(registry);
for (String task : tasks) {
List<Element> taskNodes = xPathFactory.compile("//" + task, Filters.element()).evaluate(element);
for (Element taskNode : taskNodes) {
List<Element> list = xPathFactory.compile("oncancel", Filters.element()).evaluate(taskNode);
if (list.size() > 1) {
throw new Exception("Task [" + task + "] should not contain more than 1 oncancel task");
}
}
}
}
}