org.bndly.common.bpm.impl.ContextResolverImpl Maven / Gradle / Ivy
package org.bndly.common.bpm.impl;
/*-
* #%L
* BPM Impl
* %%
* Copyright (C) 2013 - 2020 Cybercon GmbH
* %%
* 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.
* #L%
*/
import org.bndly.common.bpm.api.ContextResolver;
import java.util.HashMap;
import java.util.Map;
import org.osgi.service.component.annotations.Component;
/**
*
* @author cybercon <[email protected]>
*/
@Component(service = ContextResolver.class)
public class ContextResolverImpl implements ContextResolver {
private final ThreadLocal, Object>> contextObjects = new ThreadLocal<>();
@Override
public E getContext(Class typeOfContextObject) {
Map, Object> map = contextObjects.get();
if (map != null) {
Object val = map.get(typeOfContextObject);
if (typeOfContextObject.isInstance(val)) {
return typeOfContextObject.cast(val);
} else {
return null;
}
}
return null;
}
@Override
public void setContext(Class typeOfContextObject, E contextObject) {
Map, Object> map = contextObjects.get();
if (map == null) {
map = new HashMap<>();
contextObjects.set(map);
}
map.put(typeOfContextObject, contextObject);
}
@Override
public void clear() {
contextObjects.remove();
}
}