Examples with BytesStreamSource org.activiti.engine.impl.util.io.BytesStreamSource used on opensource projects

Example 1 with BytesStreamSource

use of org.activiti.engine.impl.util.io.BytesStreamSource in project Activiti by Activiti.

the class DeploymentManager method getBpmnModelById.

public BpmnModel getBpmnModelById(String processDefinitionId) {
    if (processDefinitionId == null) {
        throw new ActivitiIllegalArgumentException("Invalid process definition id : null");
    }
    // first try the cache
    BpmnModel bpmnModel = bpmnModelCache.get(processDefinitionId);
    if (bpmnModel == null) {
        ProcessDefinitionEntity processDefinition = findDeployedProcessDefinitionById(processDefinitionId);
        if (processDefinition == null) {
            throw new ActivitiObjectNotFoundException("no deployed process definition found with id '" + processDefinitionId + "'", ProcessDefinition.class);
        }
        // Fetch the resource
        String resourceName = processDefinition.getResourceName();
        ResourceEntity resource = Context.getCommandContext().getResourceEntityManager().findResourceByDeploymentIdAndResourceName(processDefinition.getDeploymentId(), resourceName);
        if (resource == null) {
            if (Context.getCommandContext().getDeploymentEntityManager().findDeploymentById(processDefinition.getDeploymentId()) == null) {
                throw new ActivitiObjectNotFoundException("deployment for process definition does not exist: " + processDefinition.getDeploymentId(), Deployment.class);
            } else {
                throw new ActivitiObjectNotFoundException("no resource found with name '" + resourceName + "' in deployment '" + processDefinition.getDeploymentId() + "'", InputStream.class);
            }
        }
        // Convert the bpmn 2.0 xml to a bpmn model
        BpmnXMLConverter bpmnXMLConverter = new BpmnXMLConverter();
        bpmnModel = bpmnXMLConverter.convertToBpmnModel(new BytesStreamSource(resource.getBytes()), false, false);
        bpmnModelCache.add(processDefinition.getId(), bpmnModel);
    }
    return bpmnModel;
}