/* 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.rest.api.task;
import java.io.InputStream;
import org.activiti.engine.ActivitiException;
import org.activiti.engine.task.Attachment;
import org.activiti.rest.api.ActivitiUtil;
import org.activiti.rest.api.SecuredResource;
import org.restlet.data.CacheDirective;
import org.restlet.data.MediaType;
import org.restlet.representation.InputRepresentation;
import org.restlet.representation.Representation;
import org.restlet.resource.Delete;
import org.restlet.resource.Get;
/**
* @author Tijs Rademakers
*/
public class TaskAttachmentResource extends SecuredResource {
@Get
public InputRepresentation getAttachment() {
if(authenticate() == false) return null;
String attachmentId = (String) getRequest().getAttributes().get("attachmentId");
if(attachmentId == null) {
throw new ActivitiException("No attachment id provided");
}
Attachment attachment = ActivitiUtil.getTaskService().getAttachment(attachmentId);
if(attachment == null) {
throw new ActivitiException("No attachment found for " + attachmentId);
}
String contentType = attachment.getType();
MediaType mediatType = MediaType.IMAGE_PNG;
if(contentType != null) {
if(contentType.contains(";")) {
contentType = contentType.substring(0, contentType.indexOf(";"));
}
mediatType = MediaType.valueOf(contentType);
}
InputStream resource = ActivitiUtil.getTaskService().getAttachmentContent(attachmentId);
InputRepresentation output = new InputRepresentation(resource, mediatType);
getResponse().getCacheDirectives().add(CacheDirective.maxAge(28800));
return output;
}
@Delete
public void deleteAttachment(Representation entity) {
if(authenticate() == false) return;
String attachmentId = (String) getRequest().getAttributes().get("attachmentId");
if(attachmentId == null) {
throw new ActivitiException("No attachment id provided");
}
ActivitiUtil.getTaskService().deleteAttachment(attachmentId);
}
}