We have a test for this: org.activiti.spring.test.autodeployment.SpringAutoDeployTest.testNoRedeploymentForSpringContainerRestart, which runs green on our QA (against H2).
public void testNoRedeploymentForSpringContainerRestart() throws Exception {
createAppContext(CTX_PATH);
DeploymentQuery deploymentQuery = repositoryService.createDeploymentQuery();
assertEquals(1, deploymentQuery.count());
ProcessDefinitionQuery processDefinitionQuery = repositoryService.createProcessDefinitionQuery();
assertEquals(3, processDefinitionQuery.count());
// Creating a new app context with same resources doesn't lead to more deployments
new ClassPathXmlApplicationContext(CTX_NO_DROP_PATH);
assertEquals(1, deploymentQuery.count());
assertEquals(3, processDefinitionQuery.count());
}
Actual code that checks the duplicates:
if ( deploymentBuilder.isDuplicateFilterEnabled() ) {
DeploymentEntity existingDeployment = Context
.getCommandContext()
.getDeploymentEntityManager()
.findLatestDeploymentByName(deployment.getName());
if ( (existingDeployment!=null)
&& !deploymentsDiffer(deployment, existingDeployment)) {
return existingDeployment;
}
Deployment is looked up by name (in this case, SpringAutoDeployment) and all non-generated resources are checked to see if they differ (byte-level). If they differ, a new deployment is created.
What DB are you on? only thing I can think of is that the bytes returned from the database are a bit different than the bytes from the actual files on the hard disk (maybe encoding?).
