org.camunda.bpm.engine.impl.dmn.cmd.GetDeploymentDecisionDiagramCmd Maven / Gradle / Ivy
/*
* Copyright Camunda Services GmbH and/or licensed to Camunda Services GmbH
* under one or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information regarding copyright
* ownership. Camunda licenses this file to you under the Apache License,
* Version 2.0; 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.camunda.bpm.engine.impl.dmn.cmd;
import java.io.InputStream;
import java.io.Serializable;
import java.util.concurrent.Callable;
import org.camunda.bpm.engine.impl.cmd.GetDeploymentResourceCmd;
import org.camunda.bpm.engine.impl.interceptor.Command;
import org.camunda.bpm.engine.impl.interceptor.CommandContext;
import org.camunda.bpm.engine.repository.DecisionDefinition;
/**
* Gives access to a deployed decision diagram, e.g., a PNG image, through a stream of bytes.
*/
public class GetDeploymentDecisionDiagramCmd implements Command, Serializable {
private static final long serialVersionUID = 1L;
protected String decisionDefinitionId;
public GetDeploymentDecisionDiagramCmd(String decisionDefinitionId) {
this.decisionDefinitionId = decisionDefinitionId;
}
public InputStream execute(final CommandContext commandContext) {
DecisionDefinition decisionDefinition = new GetDeploymentDecisionDefinitionCmd(decisionDefinitionId).execute(commandContext);
final String deploymentId = decisionDefinition.getDeploymentId();
final String resourceName = decisionDefinition.getDiagramResourceName();
if (resourceName != null ) {
return commandContext.runWithoutAuthorization(new Callable() {
public InputStream call() throws Exception {
return new GetDeploymentResourceCmd(deploymentId, resourceName).execute(commandContext);
}
});
}
else {
return null;
}
}
}