See Sample Onboarding Quick Start for an example of managing Process Instances using Restful Services. Indication if the historic activity instance is finished. As an embeddable process engine, Activiti is not concerned with actually receiving a message. Activiti-CDI supports, type-safe injection of @BusinessProcessScoped beans using @Inject \[additional qualifiers\] Type fieldName. one form for usage in a web app of normal screen size, one form for mobile phone’s small screens and maybe even a template for an IM form or an email form. After an element is visited during process execution, all outgoing sequence flow will be followed. But consider switching to the new public API interfaces (without .impl. We are quite excited to see how the community picks up these components to build all sorts of business applications. The JobExecutor acquires the jobs and delegates them to a thread pool of worker threads which actually process the jobs. If not, you can easily install it in your local maven repository folder by just typing It’s a best practice to always set the Accept and Content-Type (in case of posting/putting JSON) headers to application/json on the HTTP requests described below. We send a string, camel concatenates something to it and returns back the result. As said in the one minute demo setup, the Activiti Explorer runs an in-memory H2 database by default. Indicates the requested task was not found or the task doesn’t have a variable with the given name in the given scope. Several factors will influence this decision (graphical editor usage, company policy, etc.). After connecting, you can see the standard JVM statistics and MBeans. The process engine in a web application, 5.7.3. start process, complete task) in one bunch. A user task is visualized as a typical task (rounded rectangle), with a small user icon in the left upper corner. Scope of variable to delete in. The time in milliseconds between timer job queries being executed. Delete an identity link on a task, 15.7.27. Deployed process definition can be converted into models that can be edited by the Activiti Modeler. The Activiti process engine is configured through an XML file called activiti.cfg.xml. Only return process definitions with the given name. The consequence is that replay lives in real time. LDAPQueryBuilder, which allows for more customization than only the query. In most cases the BPMN 2.0 processes that are being deployed to the Activiti engine are under tight control of e.g. Create (or update) variables on an execution, 15.6.9. The root element of the BPMN 2.0 schema is the definitions element. In this case, using field injection is not thread-safe. Name of the column to sort the resulting rows on, ascending. Indicates the requested task was not found or the task doesn’t have a variable with the given name (in the given scope) or the variable doesn’t have a binary stream available. This means that the creation and configuration of properties for Spring is the same as documented in the configuration section. defining the type of the boundary event. However, Java delegates need to be written and put on the classpath in a jar and they have a different lifecyle from a process definition. Consider the following process (fragment): This time we are completing the user task, generating an invoice and then send that invoice to the customer. If you wish to allow this, you should set the orderable attribute to true, which enables buttons at the end of each row to move it up or down in the grid. Indicates the name of a variable to create was missing or that an attempt is done to create a variable on a standalone task (without a process associated) with scope global or an empty array of variables was included in the request or request did not contain an array of variables. Instead, it will make sure that whenever it acquires an exclusive job from a certain process instance, it acquires all other exclusive jobs from the same process instance and delegates them to the same worker thread. Only return process definitions with a category like the given name. The following variables will be referenced in this tutorial. An Event-based Gateway must only be connected to elements of type intermediateCatchEvent only. The request should be of type multipart/form-data. The compensation boundary event is activated when the activity it is attached to completes successfully. It is also possible to use a different bean id (e.g. as described in the configuration section. Status message provides additional information. Single mapping is the simplest form: In above code, if an instance of org.activiti.SomeException is thrown in service task, it would be caught and converted to a BPMN exception with the given errorCode. However, Java generics are sometimes more harming than helping: if you want to use the TaskInfoQuery type directly, it would look like this: Ugh, Right. Should you run the program from within your IDE, the result should be the same (usually displayed in the IDE’s console view). Unzip the downloaded file and then you should be able to start it with the eclipse file in the directory eclipse. A new entity is created. DDL files for mysql 5.5 could be used if really needed. The status description contains additional information about the error. The Activiti Engine will have a clear focus on being lightweight and easy to use for Java developers. This tutorial assumes that you have the Activiti demo setup running, and that you are using a standalone H2 server. It may also be valuable for demonstrations and presentations. Value is threaded as and converted to a java.lang.String. For example: This example snippet has two service tasks that use the same delegate expression, but injects different values for the Expression field. no inclusion of the boundary event inside the activity). A report process can be as simple or as complex as wanted. The JSON should look as follows: This JSON will be fetched at runtime in Explorer and will be used to generate charts or lists. Indicates the task variable was found and has been deleted. A small amount of properties can be defined by changing the engine.properties file you can find in the WEB-INF/classes folder. On top of that, the query allows for filtering based on task and process variables. Currently, the .drl files containing the business rules have to be deployed together with the process definition that defines a business rule task to execute those rules. Activiti runs in any Java application, on a server, on a cluster or in the cloud. Indicates the process was category was altered. * Store the extension somewhere on the hard drive where it will be able to remain and remember the location. ACT_RU_*: RU stands for runtime. More information about the variable format can be found in the REST variables section. To see process engine debugger in action run SimpleSimulationRunTest. If no condition evaluates to true and exception is thrown. To achieve this, an implementation of the interface org.activiti.cdi.spi.ProcessEngineLookup is looked up at runtime. Such message event subscriptions can be queried using a ExecutionQuery: Such queries are called correlation queries and usually require knowledge about the processes (in this case that there will be at most one process instance for a given orderId). Indicates the model was found and source is returned. Starting a process and completing user tasks is where people are involved into a process. Since Activiti puts ease of development as a top-priority, we introduced something called the Activiti BPMN extensions. This file can now be uploaded to the Activiti Engine using the deployments tab in Activiti Explorer, and you are ready to go. This file contains the XML as shown above, but also contains the necessary BPMN diagram interchange information to visualize the process in the Activiti tools. During deployment of a business archive however, those classes don’t have to be present on the classpath. Note how the key for the new process is different from our first process. Indicates an parameter was passed in the wrong format. For now, add the H2 database dependency: The application can now be started. In Camel you can send a signal to the process instance by sending a message to the proper Activiti endpoint. This is the most performant for runtime process execution, but no historical information will be available. If a process definition has multiple message start events and a single none start event, runtimeService.startProcessInstanceByKey(…​) and runtimeService.startProcessInstanceById(…​) starts a process instance using the none start event. We add the method to find a Person by username. The response-body is left empty intentionally. To avoid these complexities, custom extensions on the user task are possible. So it works in combination with Forms. The snippet below shows how to throw a signal inside process-instance, throw a signal to an external process (global), throw a message-event inside the process-instance and throw an error-event inside the process-instance. Only return tasks which are part of the execution with the given id. see line 3). This method determines which deployment strategy is used for a certain value of the deploymentMode configuration. If property speaker is submitted, an ActivitiException will be thrown. For that to happen, a special syntax is available. Some examples: Method expression: invokes a method, with or without parameters. The process definition key of the historic process instance. Get the binary data for a variable, 15.7.10. When using the activiti:expression attribute, using field injection is not possible. It is easy to see how this table data can now be used to feed the JSON into a big data NoSQL store such as MongoDB, Elastic Search, etc. This background thread is the Activiti job executor (actually a thread pool) which periodically polls the database for jobs. Listeners cannot be defined on individual activities in the process. The id property is set to {processDefinitionKey}:{processDefinitionVersion}:{generated-id}, where generated-id is a unique number added to guarantee uniqueness of the process id for the process definition caches in a clustered environment. An H2 in-memory database is used by default. A signal is an event of global scope (broadcast semantics) and is delivered to all active handlers (waiting process instances/catching signal events). However, there are also situations where the broadcast behavior is unintended. Can only contain numeric non-decimal values, between -2.147.483.648 and 2.147.483.647. Create a new xml file VacationRequest.bpmn20.xml in the src/test/resources/org/activiti/test resource folder (or anywhere else if you’re not using the unit test template) with the following content. Indicates the requested group was updated simultaneously. when the entity is deleted). Using this additional annotation, you can specify the date time pattern to be used to store dates in the diagram and the type of datepicker you would like to be shown. Indicates the task was found and the events are returned. Validation failures are displayed by changing the background of the entire field to a light red color. This is not bad, as subsequent calls will not hit the database again. Indicates the deployment was found and has been deleted. The following is an example of a process which can be started using two different messages: This is useful if the process needs alternative ways to react to different start events but eventually continues in a uniform way. Either users or groups, depending on the type of identity link. 1.5. Performance is an issue under heavy load. The next step is to run the image and create the container: That is it, the image is up, and explorer web application is running. Only return tasks with the given description. When the event is caught, the activity is interrupted and the sequence flow going out of the event are followed. This property is used when looking for a Group object Since version 5.14, Activiti offers an out-of-the-box solution for easily configuring how Activiti should connect with an LDAP system. When local, only task-local variable value is returned. This tool also allows to administrate the Activiti engine. But bear in mind that you also should update the Activiti rest webapp with that context if you use it. As mentioned earlier another option is to hook in the implementation of the BusinessRuleTask yourself: Now the BusinessRuleTask behaves exactly like a ServiceTask, but still keeps the BusinessRuleTask icon to visualize that we do business rule processing here. An exclusive gateway (also called the XOR gateway or more technical the exclusive data-based gateway), is used to model a decision in the process. You have to implement a number of methods. If true, only return jobs which are timers. Creating a new report can be done with known tools and known concepts. Login with kermit/kermit. When using Hibernate 4.2.x JPA in service task or listener logic in the Activiti Engine an additional dependency to Spring ORM is needed. Only return jobs which are due to be executed after the given date. When writing, JSON number value is used as base for conversion, falls back to JSON text. Since the executions are triggered by a job, Activiti will retry to perform the same job after waiting for a certain amount of time and hopefully this time pass the synchronizing gateway. and who have the matching uid attribute value will be returned. org.activiti.cdi.CdiStandaloneProcessEngineConfiguration: a subclass of the activiti StandaloneProcessEngineConfiguration, can be used if plain JDBC transactions should be used for Activiti. The camelContext bean defines the Camel routes that will be loaded by the Camel container. The super-execution waits until the subprocess is completely ended, and continues the original process afterwards. If you need more advanced configuration options there’s the possibility to define the Activiti process engine configuration in XML in the activiti-custom-context.xml file you can also find in the WEB-INF/classes folder.