org.flowable.engine.impl.cmd.GetDeploymentProcessDiagramLayoutCmd 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.flowable.engine.impl.cmd;
import java.io.InputStream;
import java.io.Serializable;
import org.flowable.common.engine.api.FlowableException;
import org.flowable.common.engine.impl.interceptor.Command;
import org.flowable.common.engine.impl.interceptor.CommandContext;
import org.flowable.engine.impl.bpmn.diagram.ProcessDiagramLayoutFactory;
import org.flowable.engine.repository.DiagramLayout;
/**
* Provides positions and dimensions of elements in a process diagram as provided by {@link GetDeploymentProcessDiagramCmd}.
*
* This command requires a process model and a diagram image to be deployed.
*
* @author Falko Menge
*/
public class GetDeploymentProcessDiagramLayoutCmd implements Command, Serializable {
private static final long serialVersionUID = 1L;
protected String processDefinitionId;
public GetDeploymentProcessDiagramLayoutCmd(String processDefinitionId) {
if (processDefinitionId == null || processDefinitionId.length() < 1) {
throw new FlowableException("The process definition id is mandatory, but '" + processDefinitionId + "' has been provided.");
}
this.processDefinitionId = processDefinitionId;
}
@Override
public DiagramLayout execute(CommandContext commandContext) {
InputStream processModelStream = new GetDeploymentProcessModelCmd(processDefinitionId).execute(commandContext);
InputStream processDiagramStream = new GetDeploymentProcessDiagramCmd(processDefinitionId).execute(commandContext);
return new ProcessDiagramLayoutFactory().getProcessDiagramLayout(processModelStream, processDiagramStream);
}
}