ro.pippo.controller.extractor.SessionExtractor Maven / Gradle / Ivy
/*
* Copyright (C) 2016 the original author or authors.
*
* 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.
*/
package ro.pippo.controller.extractor;
import org.kohsuke.MetaInfServices;
import ro.pippo.controller.MethodParameter;
import ro.pippo.core.PippoRuntimeException;
import ro.pippo.core.route.RouteContext;
import ro.pippo.core.util.LangUtils;
import ro.pippo.core.util.StringUtils;
/**
* @author Decebal Suiu
* @author James Moger
*/
@MetaInfServices
public class SessionExtractor implements MethodParameterExtractor {
@Override
public boolean isApplicable(MethodParameter parameter) {
return parameter.isAnnotationPresent(Session.class);
}
@Override
public Object extract(MethodParameter parameter, RouteContext routeContext) {
Session annotation = parameter.getAnnotation(Session.class);
String name = getParameterName(parameter, annotation);
return routeContext.getSession(name);
}
private String getParameterName(MethodParameter parameter, Session annotation) {
String name = annotation.value();
if (StringUtils.isNullOrEmpty(name)) {
name = parameter.getParameterName();
}
if (name == null) {
throw new PippoRuntimeException(
"Method '{}' parameter {} does not specify a name!",
LangUtils.toString(parameter.getMethod()), parameter.getParameterIndex());
}
return name;
}
}