topic new configuration approach in Alfresco Archive https://connect.hyland.com/t5/alfresco-archive/new-configuration-approach/m-p/22408#M10730 <HTML><HEAD></HEAD><BODY><SPAN>Hi Folks,</SPAN><BR /><BR /><SPAN>Yesterday I committed a new configuration approach based on David's input.&nbsp; Here's an overview of my first attempt:</SPAN><BR /><BR /><SPAN>In the API, you can only use the builder to create a new process engine.&nbsp; It can be configured programatically, with a properties resource or with a combination of both:</SPAN><BR /><BR /><PRE class="language-none line-numbers"><CODE>ProcessEngine processEngine = new DbProcessEngineBuilder()<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; .configureFromPropertiesResource("activiti.properties")<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; .buildProcessEngine();<BR /><BR />ProcessEngine processEngine = new DbProcessEngineBuilder()<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; .setDatabaseH2()<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; .setJdbcUrl("jdbc:some:url")<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; .buildProcessEngine();<BR /><SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN></CODE></PRE><BR /><SPAN>Method setDatabaseH2() also fills in default values for the other configuration properties.&nbsp; Specific property setters will win from the defaults set by the setDatabaseXxx methods. Order doesn't matter. </SPAN><BR /><BR /><SPAN>ProcessEngines.init() will scan for all activiti.properties files on the classpath and create a process engine for each configuration file found.</SPAN><BR /><BR /><BR /><BR /><SPAN>In the implementation, a ProcessEngineConfiguration contains getters and setters for all configurable pieces in the engine:</SPAN><BR /><BR /><PRE class="language-none line-numbers"><CODE>public class ProcessEngineConfiguration {<BR /><BR />&nbsp; String processEngineName;<BR />&nbsp; DeployerManager deployerManager;<BR />&nbsp; VariableTypes variableTypes;<BR />&nbsp; ScriptingEngines scriptingEngines;<BR />&nbsp; JobExecutor jobExecutor;<BR />&nbsp; boolean jobExecutorAutoActivate;<BR />&nbsp; IdGenerator idGenerator;<BR />&nbsp; PersistenceSessionFactory persistenceSessionFactory;<BR />&nbsp; ProcessCache processCache;<BR />&nbsp; CommandContextFactory commandContextFactory;<BR />&nbsp; CommandExecutor commandExecutor;<BR />&nbsp; DbSchemaStrategy dbSchemaStrategy;<BR />&nbsp; ProcessServiceImpl processService;<BR />&nbsp; IdentityServiceImpl identityService;<BR />&nbsp; TaskServiceImpl taskService;<BR />&nbsp; ManagementServiceImpl managementService;<BR /><BR />&nbsp; public ProcessEngineConfiguration() {<BR />&nbsp;&nbsp;&nbsp; deployerManager = createDefaultDeployerManager();<BR />&nbsp;&nbsp;&nbsp; variableTypes = createDefaultVariableTypes();<BR />&nbsp;&nbsp;&nbsp; scriptingEngines = createDefaultScriptingEngines();<BR />&nbsp;&nbsp;&nbsp; jobExecutor = createDefaultJobExecutor();<BR />&nbsp;&nbsp;&nbsp; jobExecutorAutoActivate = createDefaultJobExecutorAutoActivate();<BR />&nbsp;&nbsp;&nbsp; idGenerator = createDefaultIdGenerator();<BR />&nbsp;&nbsp;&nbsp; persistenceSessionFactory = createDefaultPersistenceSessionFactory();<BR />&nbsp;&nbsp;&nbsp; processCache = createDefaultProcessCache();<BR />&nbsp;&nbsp;&nbsp; commandContextFactory = createDefaultCommandContextFactory();<BR />&nbsp;&nbsp;&nbsp; commandExecutor = createDefaultCmdExecutor();<BR />&nbsp;&nbsp;&nbsp; dbSchemaStrategy = createDefaultDbSchemaStrategy();<BR />&nbsp;&nbsp;&nbsp; processService = createDefaultProcessService();<BR />&nbsp;&nbsp;&nbsp; identityService = createDefaultIdentityService();<BR />&nbsp;&nbsp;&nbsp; taskService = createDefaultTaskService();<BR />&nbsp;&nbsp;&nbsp; managementService = createDefaultManagementService();<BR />&nbsp; }<BR /><SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN></CODE></PRE><BR /><SPAN>All those configurable pieces have defaults.</SPAN><BR /><SPAN>ProcessEngineConfiguration is not part of the public API.</SPAN><BR /><SPAN>The idea is that ProcessEngineConfiguration could be constructed with spring-bean-xml.</SPAN><BR /><SPAN>Then ProcessEngineConfiguration.buildProcessEngine() wires the configurable pieces together and produces the ProcessEngineImpl:</SPAN><BR /><BR /><PRE class="language-none line-numbers"><CODE>&nbsp; public ProcessEngineImpl buildProcessEngine() {<BR />&nbsp;&nbsp;&nbsp; // wiring the configurable objects together<BR />&nbsp;&nbsp;&nbsp; this.processService.setCmdExecutor(commandExecutor);<BR />&nbsp;&nbsp;&nbsp; this.identityService.setCmdExecutor(commandExecutor);<BR />&nbsp;&nbsp;&nbsp; this.taskService.setCmdExecutor(commandExecutor);<BR />&nbsp;&nbsp;&nbsp; this.managementService.setCmdExecutor(commandExecutor);<BR />&nbsp;&nbsp;&nbsp; this.idGenerator.setCmdExecutor(commandExecutor);<BR />&nbsp;&nbsp;&nbsp; this.processCache.setDeployerManager(deployerManager);<BR />&nbsp;&nbsp;&nbsp; this.commandContextFactory.setDbidGenerator(idGenerator);<BR />&nbsp;&nbsp;&nbsp; this.commandContextFactory.setDeployerManager(deployerManager);<BR />&nbsp;&nbsp;&nbsp; this.commandContextFactory.setPersistenceSessionFactory(persistenceSessionFactory);<BR />&nbsp;&nbsp;&nbsp; this.commandContextFactory.setProcessCache(processCache);<BR />&nbsp;&nbsp;&nbsp; this.commandContextFactory.setScriptingEngines(scriptingEngines);<BR />&nbsp;&nbsp;&nbsp; this.commandContextFactory.setTypes(variableTypes);<BR />&nbsp;&nbsp;&nbsp; this.jobExecutor.setCmdExecutor(commandExecutor);<BR />&nbsp;&nbsp;&nbsp; this.persistenceSessionFactory.setDbidGenerator(idGenerator);<BR />&nbsp;&nbsp;&nbsp; this.commandExecutor.setProcessEngineConfiguration(this);<BR /><BR />&nbsp;&nbsp;&nbsp; return new ProcessEngineImpl(processEngineName,<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; processService, <BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; identityService, <BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; taskService, <BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; managementService,<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; dbSchemaStrategy,<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; jobExecutor,<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; jobExecutorAutoActivate,<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; persistenceSessionFactory);<BR />&nbsp; }<BR /><SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN></CODE></PRE><BR /><BR /><SPAN>There were some occurences left where we couldn't replace the static thread local lookups with injection as an alternative.&nbsp; This is for all usages of configurable objects in the engine interpretation process.&nbsp; As those runtime process instance domain objects should also be usable without persistence.</SPAN><BR /><BR /><SPAN>We could aim to go one step further and also add injection to runtime process instance objects.&nbsp; But then we need to intercept all loads and perform injection of the CommandContext in all the persistent objects that are loaded from the db.</SPAN><BR /><BR /><SPAN>This explanation might be bit unclear.&nbsp; But shoot your questions and then I know which part I should explain differently <span class="lia-unicode-emoji" title=":winking_face:">😉</span></SPAN></BODY></HTML> Tue, 25 May 2010 14:30:44 GMT tombaeyens 2010-05-25T14:30:44Z new configuration approach https://connect.hyland.com/t5/alfresco-archive/new-configuration-approach/m-p/22408#M10730 Hi Folks,Yesterday I committed a new configuration approach based on David's input.&nbsp; Here's an overview of my first attempt:In the API, you can only use the builder to create a new process engine.&nbsp; It can be configured programatically, with a properties resource or with a combination of both<IMG id="smileytongue" class="emoticon emoticon-smileytongue" src="https://migration33.stage.lithium.com/i/smilies/16x16_smiley-tongue.png" alt="Smiley Tongue" title="Smiley Tongue" />rocess Tue, 25 May 2010 14:30:44 GMT https://connect.hyland.com/t5/alfresco-archive/new-configuration-approach/m-p/22408#M10730 tombaeyens 2010-05-25T14:30:44Z Re: new configuration approach https://connect.hyland.com/t5/alfresco-archive/new-configuration-approach/m-p/22409#M10731 <HTML><HEAD></HEAD><BODY><SPAN>Nice work, Tom. Now show me that Spring bean config in XML <span class="lia-unicode-emoji" title=":winking_face:">😉</span></SPAN><BR /><BR /><SPAN>I dont yet see the runtime injection use case. Could you give an example there?</SPAN></BODY></HTML> Tue, 25 May 2010 17:45:34 GMT https://connect.hyland.com/t5/alfresco-archive/new-configuration-approach/m-p/22409#M10731 jbarrez 2010-05-25T17:45:34Z