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16-08-2011 10:29:37 Bootstrap [FATAL] Couldn't initialize Activiti Engine java.lang.NullPointerException at org.activiti.engine.impl.db.DbSqlSession.dbSchemaUpdate(DbSqlSession.java:620) at org.activiti.engine.impl.db.DbSqlSession.performSchemaOperationsProcessEngineBuild(DbSqlSession.java:872) at org.activiti.engine.impl.SchemaOperationsProcessEngineBuild.execute(SchemaOperationsProcessEngineBuild.java:25) at org.activiti.engine.impl.interceptor.CommandExecutorImpl.execute(CommandExecutorImpl.java:24) at org.activiti.engine.impl.interceptor.CommandContextInterceptor.execute(CommandContextInterceptor.java:42) at org.activiti.engine.impl.interceptor.LogInterceptor.execute(LogInterceptor.java:33) at org.activiti.engine.impl.ProcessEngineImpl.<init>(ProcessEngineImpl.java:77) at org.activiti.engine.impl.cfg.ProcessEngineConfigurationImpl.buildProcessEngine(ProcessEngineConfigurationImpl.java:280) at com.me.gae.servlet.Bootstrap.initActiviti(Bootstrap.java:67)
<br>org.apache.commons.dbcp.BasicDataSource bds = new org.apache.commons.dbcp.BasicDataSource();<br> bds.setDefaultAutoCommit(false); //FIXME: make me configurable<br> bds.setUsername(ApplicationConfig.getEncryptedConfigParamDecrypted("activiti.username"));<br> bds.setPassword(ApplicationConfig.getEncryptedConfigParamDecrypted("activiti.password"));<br> bds.setDriverClassName(ApplicationConfig.getConfigParam("activiti.driverClassName"));<br> bds.setUrl(ApplicationConfig.getConfigParam("activiti.url"));<br><br> ProcessEngine processEngine = ProcessEngineConfiguration<br> .createStandaloneProcessEngineConfiguration()<br> .setDataSource(bds) .setJdbcMaxActiveConnections(Integer.parseInt(ApplicationConfig.getConfigParam("activiti.jdbcMaxActiveConnections")))<br> .setJdbcMaxIdleConnections(Integer.parseInt(ApplicationConfig.getConfigParam("activiti.jdbcMaxIdleConnections")))<br> .setDatabaseType(ApplicationConfig.getConfigParam("activiti.databaseType"))<br> .setDatabaseSchemaUpdate(ApplicationConfig.getConfigParam("activiti.databaseSchemaUpdate"))<br> .setHistory(ApplicationConfig.getConfigParam("activiti.history"))<br> .setProcessEngineName(ACTIVITI_ENGINE_NAME)<br> .setJobExecutorActivate(false) //FIXME: make me configurable<br> .buildProcessEngine();<br><br> ProcessEngines.registerProcessEngine(processEngine);<br><br>
<br>public void dbSchemaUpdate() {<br> String dbVersion = null;<br> <br> boolean isUpgradeNeeded = false;<br> <br> if (isEngineTablePresent()) {<br> // the next piece assumes both DB version and library versions are formatted 5.x<br> PropertyEntity dbVersionProperty = selectById(PropertyEntity.class, "schema.version");<br> dbVersion = dbVersionProperty.getValue();<br> isUpgradeNeeded = !ProcessEngine.VERSION.equals(dbVersion);<br> <br> if (isUpgradeNeeded) {<br> dbVersionProperty.setValue(ProcessEngine.VERSION);<br><br> PropertyEntity dbHistoryProperty;<br> if ("5.0".equals(dbVersion)) {<br> dbHistoryProperty = new PropertyEntity("schema.history", "create(5.0)");<br> insert(dbHistoryProperty);<br> } else {<br> dbHistoryProperty = selectById(PropertyEntity.class, "schema.history");<br> }<br> <br> String dbHistoryValue = dbHistoryProperty.getValue()+" upgrade("+dbVersion+"->"+ProcessEngine.VERSION+")";<br> dbHistoryProperty.setValue(dbHistoryValue);<br> <br> dbSchemaUpgrade("engine", dbVersion);<br> }<br> } else {<br> dbSchemaCreateEngine();<br> }<br> <br> if (isHistoryTablePresent()) {<br> if (isUpgradeNeeded) {<br> dbSchemaUpgrade("history", dbVersion);<br> }<br> } else if (dbSqlSessionFactory.isDbHistoryUsed()) {<br> dbSchemaCreateHistory();<br> }<br> <br> if (isIdentityTablePresent()) {<br> if (isUpgradeNeeded) {<br> dbSchemaUpgrade("identity", dbVersion);<br> }<br> } else if (dbSqlSessionFactory.isDbIdentityUsed()) {<br> dbSchemaCreateIdentity();<br> }<br> <br> if (isCycleTablePresent()) {<br> if (isUpgradeNeeded) {<br> dbSchemaUpgrade("cycle", dbVersion);<br> }<br> } else if (dbSqlSessionFactory.isDbCycleUsed()) {<br> dbSchemaCreateCycle();<br> }<br> }<br>
