org.activiti.springboot.integration.ProcessVariableHeaderMapper Maven / Gradle / Ivy
/* 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 org.activiti.springboot.integration;
import org.springframework.integration.mapping.HeaderMapper;
import org.springframework.messaging.MessageHeaders;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.ConcurrentSkipListSet;
/**
*/
public class ProcessVariableHeaderMapper implements HeaderMapper> {
private final Set keysToPreserve = new ConcurrentSkipListSet();
public ProcessVariableHeaderMapper(Set sync) {
this.keysToPreserve.addAll(sync);
}
@Override
public void fromHeaders(MessageHeaders headers, Map target) {
// inbound SI msg. take the headers and convert it to
sync(this.keysToPreserve, headers, target);
}
@Override
public Map toHeaders(Map source) {
Map matches = sync(
this.keysToPreserve,
source,
new HashMap());
return matches;
}
private static Map sync(
Set keys,
Map in,
Map out) {
for (String k : keys)
if (in.containsKey(k))
out.put(k, in.get(k));
return out;
}
}