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Jetty web application support
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//
// ========================================================================
// Copyright (c) 1995 Mort Bay Consulting Pty Ltd and others.
//
// This program and the accompanying materials are made available under the
// terms of the Eclipse Public License v. 2.0 which is available at
// https://www.eclipse.org/legal/epl-2.0, or the Apache License, Version 2.0
// which is available at https://www.apache.org/licenses/LICENSE-2.0.
//
// SPDX-License-Identifier: EPL-2.0 OR Apache-2.0
// ========================================================================
//
package org.eclipse.jetty.ee8.webapp;
import org.eclipse.jetty.util.Loader;
import org.eclipse.jetty.util.resource.Resource;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* DiscoveredAnnotation
*
* Represents an annotation that has been discovered
* by scanning source code of WEB-INF/classes and WEB-INF/lib jars.
*/
public abstract class DiscoveredAnnotation {
private static final Logger LOG = LoggerFactory.getLogger(DiscoveredAnnotation.class);
protected WebAppContext _context;
protected String _className;
protected Class> _clazz;
//resource it was discovered on, can be null (eg from WEB-INF/classes)
protected Resource _resource;
public abstract void apply();
public DiscoveredAnnotation(WebAppContext context, String className) {
this(context, className, null);
}
public DiscoveredAnnotation(WebAppContext context, String className, Resource resource) {
_context = context;
_className = className;
_resource = resource;
}
public String getClassName() {
return _className;
}
public Resource getResource() {
return _resource;
}
public Class> getTargetClass() {
if (_clazz != null)
return _clazz;
loadClass();
return _clazz;
}
private void loadClass() {
if (_clazz != null)
return;
if (_className == null)
return;
try {
_clazz = Loader.loadClass(_className);
} catch (Exception e) {
LOG.warn("Unable to load {}", _className, e);
}
}
@Override
public String toString() {
return getClass().getName() + "[" + getClassName() + "," + getResource() + "]";
}
}