Where to get a db.properties file?

[srón]

I am trying to create a process engine as follows:

      ProcessEngineConfiguration pec = ProcessEngineConfiguration.createStandaloneInMemProcessEngineConfiguration()
              .setDatabaseSchemaUpdate(ProcessEngineConfiguration.DB_SCHEMA_UPDATE_FALSE)
              .setJdbcUrl("jdbc:h2:mem:activiti;DB_CLOSE_DELAY=1000")
              .setJobExecutorActivate(true);
      ProcessEngine processEngine = pec.buildProcessEngine();
‍‍‍‍‍‍‍

      

I presume that in order to succeed, I have to create a standalone h2 database upon reading the error stack I get:

SCHWERWIEGEND: 
org.activiti.engine.ActivitiException: Error while building ibatis SqlSessionFactory: Error creating document instance.  Cause: java.net.ConnectException: Connection timed out: connect
   at org.activiti.engine.impl.cfg.ProcessEngineConfigurationImpl.initSqlSessionFactory(ProcessEngineConfigurationImpl.java:706)
   at org.activiti.engine.impl.cfg.ProcessEngineConfigurationImpl.init(ProcessEngineConfigurationImpl.java:436)
   at org.activiti.engine.impl.cfg.ProcessEngineConfigurationImpl.buildProcessEngine(ProcessEngineConfigurationImpl.java:408)
   at com.example.testservlet.TestservletUI.init(TestservletUI.java:47)
   at com.vaadin.ui.UI.doInit(UI.java:639)
   at com.vaadin.server.communication.UIInitHandler.getBrowserDetailsUI(UIInitHandler.java:222)
   at com.vaadin.server.communication.UIInitHandler.synchronizedHandleRequest(UIInitHandler.java:74)
   at com.vaadin.server.SynchronizedRequestHandler.handleRequest(SynchronizedRequestHandler.java:41)
   at com.vaadin.server.VaadinService.handleRequest(VaadinService.java:1402)
   at com.vaadin.server.VaadinServlet.service(VaadinServlet.java:305)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
   at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
   at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
   at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
   at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501)
   at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
   at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
   at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)
   at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
   at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
   at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1070)
   at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:611)
   at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
   at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
   at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
   at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
   at java.lang.Thread.run(Unknown Source)
Caused by: org.apache.ibatis.builder.BuilderException: Error creating document instance.  Cause: java.net.ConnectException: Connection timed out: connect
   at org.apache.ibatis.parsing.XPathParser.createDocument(XPathParser.java:136)
   at org.apache.ibatis.parsing.XPathParser.<init>(XPathParser.java:32)
   at org.apache.ibatis.builder.xml.XMLConfigBuilder.<init>(XMLConfigBuilder.java:45)
   at org.activiti.engine.impl.cfg.ProcessEngineConfigurationImpl.initMybatisConfiguration(ProcessEngineConfigurationImpl.java:714)
   at org.activiti.engine.impl.cfg.ProcessEngineConfigurationImpl.initSqlSessionFactory(ProcessEngineConfigurationImpl.java:702)
   … 30 more
Caused by: java.net.ConnectException: Connection timed out: connect
   at java.net.DualStackPlainSocketImpl.connect0(Native Method)
   at java.net.DualStackPlainSocketImpl.socketConnect(Unknown Source)
   at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source)
   at java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source)
   at java.net.AbstractPlainSocketImpl.connect(Unknown Source)
   at java.net.PlainSocketImpl.connect(Unknown Source)
   at java.net.SocksSocketImpl.connect(Unknown Source)
   at java.net.Socket.connect(Unknown Source)
   at java.net.Socket.connect(Unknown Source)
   at sun.net.NetworkClient.doConnect(Unknown Source)
   at sun.net.www.http.HttpClient.openServer(Unknown Source)
   at sun.net.www.http.HttpClient.openServer(Unknown Source)
   at sun.net.www.http.HttpClient.<init>(Unknown Source)
   at sun.net.www.http.HttpClient.New(Unknown Source)
   at sun.net.www.http.HttpClient.New(Unknown Source)
   at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(Unknown Source)
   at sun.net.www.protocol.http.HttpURLConnection.plainConnect(Unknown Source)
   at sun.net.www.protocol.http.HttpURLConnection.connect(Unknown Source)
   at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
   at com.sun.org.apache.xerces.internal.impl.XMLEntityManager.setupCurrentEntity(Unknown Source)
   at com.sun.org.apache.xerces.internal.impl.XMLEntityManager.startEntity(Unknown Source)
   at com.sun.org.apache.xerces.internal.impl.XMLEntityManager.startDTDEntity(Unknown Source)
   at com.sun.org.apache.xerces.internal.impl.XMLDTDScannerImpl.setInputSource(Unknown Source)
   at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$DTDDriver.dispatch(Unknown Source)
   at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$DTDDriver.next(Unknown Source)
   at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$PrologDriver.next(Unknown Source)
   at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(Unknown Source)
   at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
   at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
   at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
   at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(Unknown Source)
   at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(Unknown Source)
   at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(Unknown Source)
   at org.apache.ibatis.parsing.XPathParser.createDocument(XPathParser.java:134)
   … 34 more

Nov 14, 2014 3:32:48 PM org.apache.catalina.core.StandardWrapperValve invok
Servlet.service() for servlet [com.example.testservlet.TestservletUI$Servlet] in context with path [/TestServlet] threw exception [com.vaadin.server.ServiceException: org.activiti.engine.ActivitiException: Error while building ibatis SqlSessionFactory: Error creating document instance.  Cause: java.net.ConnectException: Connection timed out: connect] with root cause
java.net.ConnectException: Connection timed out: connect
   at java.net.DualStackPlainSocketImpl.connect0(Native Method)
   at java.net.DualStackPlainSocketImpl.socketConnect(Unknown Source)
   at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source)
   at java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source)
   at java.net.AbstractPlainSocketImpl.connect(Unknown Source)
   at java.net.PlainSocketImpl.connect(Unknown Source)
   at java.net.SocksSocketImpl.connect(Unknown Source)
   at java.net.Socket.connect(Unknown Source)
   at java.net.Socket.connect(Unknown Source)
   at sun.net.NetworkClient.doConnect(Unknown Source)
   at sun.net.www.http.HttpClient.openServer(Unknown Source)
   at sun.net.www.http.HttpClient.openServer(Unknown Source)
   at sun.net.www.http.HttpClient.<init>(Unknown Source)
   at sun.net.www.http.HttpClient.New(Unknown Source)
   at sun.net.www.http.HttpClient.New(Unknown Source)
   at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(Unknown Source)
   at sun.net.www.protocol.http.HttpURLConnection.plainConnect(Unknown Source)
   at sun.net.www.protocol.http.HttpURLConnection.connect(Unknown Source)
   at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
   at com.sun.org.apache.xerces.internal.impl.XMLEntityManager.setupCurrentEntity(Unknown Source)
   at com.sun.org.apache.xerces.internal.impl.XMLEntityManager.startEntity(Unknown Source)
   at com.sun.org.apache.xerces.internal.impl.XMLEntityManager.startDTDEntity(Unknown Source)
   at com.sun.org.apache.xerces.internal.impl.XMLDTDScannerImpl.setInputSource(Unknown Source)
   at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$DTDDriver.dispatch(Unknown Source)
   at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$DTDDriver.next(Unknown Source)
   at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$PrologDriver.next(Unknown Source)
   at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(Unknown Source)
   at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
   at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
   at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
   at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(Unknown Source)
   at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(Unknown Source)
   at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(Unknown Source)
   at org.apache.ibatis.parsing.XPathParser.createDocument(XPathParser.java:134)
   at org.apache.ibatis.parsing.XPathParser.<init>(XPathParser.java:32)
   at org.apache.ibatis.builder.xml.XMLConfigBuilder.<init>(XMLConfigBuilder.java:45)
   at org.activiti.engine.impl.cfg.ProcessEngineConfigurationImpl.initMybatisConfiguration(ProcessEngineConfigurationImpl.java:714)
   at org.activiti.engine.impl.cfg.ProcessEngineConfigurationImpl.initSqlSessionFactory(ProcessEngineConfigurationImpl.java:702)
   at org.activiti.engine.impl.cfg.ProcessEngineConfigurationImpl.init(ProcessEngineConfigurationImpl.java:436)
   at org.activiti.engine.impl.cfg.ProcessEngineConfigurationImpl.buildProcessEngine(ProcessEngineConfigurationImpl.java:408)
   at com.example.testservlet.TestservletUI.init(TestservletUI.java:47)
   at com.vaadin.ui.UI.doInit(UI.java:639)
   at com.vaadin.server.communication.UIInitHandler.getBrowserDetailsUI(UIInitHandler.java:222)
   at com.vaadin.server.communication.UIInitHandler.synchronizedHandleRequest(UIInitHandler.java:74)
   at com.vaadin.server.SynchronizedRequestHandler.handleRequest(SynchronizedRequestHandler.java:41)
   at com.vaadin.server.VaadinService.handleRequest(VaadinService.java:1402)
   at com.vaadin.server.VaadinServlet.service(VaadinServlet.java:305)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
   at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
   at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
   at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
   at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501)
   at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
   at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
   at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)
   at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
   at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
   at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1070)
   at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:611)
   at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
   at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
   at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
   at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
   at java.lang.Thread.run(Unknown Source)

‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

The manual says:

As said in the one minute demo setup, the Activiti Explorer runs an in-memory H2 database by default. To run the Activiti Explorer with a standalone H2 or another database the db.properties in the WEB-INF/classes of the Activiti Explorer web application should be changed. 
‍‍‍

The problem is, that I do not have any WEB-INF/classes folder so that I would like to as from whence to get a defaul db.properties-file.

[trademak]

Could you try it without setting the JDBC url and the database schema update?

Best regards,

[srón]

I uncommented them in my code as follows - but to no avail.

<code>
ProcessEngineConfiguration pec = ProcessEngineConfiguration.createStandaloneInMemProcessEngineConfiguration()
    /*.setDatabaseSchemaUpdate(ProcessEngineConfiguration.DB_SCHEMA_UPDATE_FALSE)
      .setJdbcUrl("jdbc:h2:mem:activiti;DB_CLOSE_DELAY=1000")*/
      .setJobExecutorActivate(true);
  ProcessEngine processEngine = pec.buildProcessEngine();
</code>

The stack trace has not changed semantically. Yet, I had an idea: I wish to run a standalone DB, I have downloaded the mysql-driver jar, put it into WEB-INF/lib and then I went over to my Tomcat webserver, there I opened jdbc.properties, an then I modified it as follows:
<code>
db=mysql
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql;DB_CLOSE_DELAY=1000
jdbc.username=root
jdbc.password=supersecretpw
</code>

Well, as jdbc-url, I established jdbc:mysql.

Nonetheless, I have to struggel with the following stack trace:


<code>
org.apache.ibatis.datasource.DataSourceException: Error setting driver on UnpooledDataSource. Cause: java.lang.ClassNotFoundException: org.h2.Driver
at org.apache.ibatis.datasource.unpooled.UnpooledDataSource.initializeDriver(UnpooledDataSource.java:167)
at org.apache.ibatis.datasource.unpooled.UnpooledDataSource.getConnection(UnpooledDataSource.java:56)
at org.apache.ibatis.datasource.pooled.PooledDataSource.popConnection(PooledDataSource.java:339)
at org.apache.ibatis.datasource.pooled.PooledDataSource.getConnection(PooledDataSource.java:55)
at org.activiti.engine.impl.cfg.ProcessEngineConfigurationImpl.initDatabaseType(ProcessEngineConfigurationImpl.java:647)
at org.activiti.engine.impl.cfg.ProcessEngineConfigurationImpl.initDataSource(ProcessEngineConfigurationImpl.java:601)
at org.activiti.engine.impl.cfg.ProcessEngineConfigurationImpl.init(ProcessEngineConfigurationImpl.java:434)
at org.activiti.engine.impl.cfg.ProcessEngineConfigurationImpl.buildProcessEngine(ProcessEngineConfigurationImpl.java:408)
at com.example.xyhg.XyhgUI.init(XyhgUI.java:34)
at com.vaadin.ui.UI.doInit(UI.java:639)
at com.vaadin.server.communication.UIInitHandler.getBrowserDetailsUI(UIInitHandler.java:222)
at com.vaadin.server.communication.UIInitHandler.synchronizedHandleRequest(UIInitHandler.java:74)
at com.vaadin.server.SynchronizedRequestHandler.handleRequest(SynchronizedRequestHandler.java:41)
at com.vaadin.server.VaadinService.handleRequest(VaadinService.java:1402)
at com.vaadin.server.VaadinServlet.service(VaadinServlet.java:305)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1070)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:611)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.ClassNotFoundException: org.h2.Driver
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1720)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1571)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at org.apache.ibatis.datasource.unpooled.UnpooledDataSource.initializeDriver(UnpooledDataSource.java:161)
… 35 more

Servlet.service() for servlet [com.example.xyhg.XyhgUI$Servlet] in context with path [/Xyhg] threw exception [com.vaadin.server.ServiceException: org.apache.ibatis.datasource.DataSourceException: Error setting driver on UnpooledDataSource. Cause: java.lang.ClassNotFoundException: org.h2.Driver] with root cause
java.lang.ClassNotFoundException: org.h2.Driver
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1720)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1571)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at org.apache.ibatis.datasource.unpooled.UnpooledDataSource.initializeDriver(UnpooledDataSource.java:161)
at org.apache.ibatis.datasource.unpooled.UnpooledDataSource.getConnection(UnpooledDataSource.java:56)
at org.apache.ibatis.datasource.pooled.PooledDataSource.popConnection(PooledDataSource.java:339)
at org.apache.ibatis.datasource.pooled.PooledDataSource.getConnection(PooledDataSource.java:55)
at org.activiti.engine.impl.cfg.ProcessEngineConfigurationImpl.initDatabaseType(ProcessEngineConfigurationImpl.java:647)
at org.activiti.engine.impl.cfg.ProcessEngineConfigurationImpl.initDataSource(ProcessEngineConfigurationImpl.java:601)
at org.activiti.engine.impl.cfg.ProcessEngineConfigurationImpl.init(ProcessEngineConfigurationImpl.java:434)
at org.activiti.engine.impl.cfg.ProcessEngineConfigurationImpl.buildProcessEngine(ProcessEngineConfigurationImpl.java:408)
at com.example.xyhg.XyhgUI.init(XyhgUI.java:34)
at com.vaadin.ui.UI.doInit(UI.java:639)
at com.vaadin.server.communication.UIInitHandler.getBrowserDetailsUI(UIInitHandler.java:222)
at com.vaadin.server.communication.UIInitHandler.synchronizedHandleRequest(UIInitHandler.java:74)
at com.vaadin.server.SynchronizedRequestHandler.handleRequest(SynchronizedRequestHandler.java:41)
at com.vaadin.server.VaadinService.handleRequest(VaadinService.java:1402)
at com.vaadin.server.VaadinServlet.service(VaadinServlet.java:305)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1070)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:611)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Unknown Source)
</code>

… Edit: I have even overhauled the whole thing by now by newly pasting the activiti-war into my Tomcat's webapp-folder, I put the following activit.cgg.xml-file into the WEB-INF/lib folder:

<code>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans   http://www.springframework.org/schema/beans/spring-beans.xsd">

  <bean id="processEngineConfiguration" class="org.activiti.engine.impl.cfg.StandaloneProcessEngineConfiguration">
 
    <property name="jdbcUrl" value="jdbc:h2:mem:activiti;DB_CLOSE_DELAY=1000" />
    <property name="jdbcDriver" value="org.h2.Driver" />
    <property name="jdbcUsername" value="sa" />
    <property name="jdbcPassword" value="" />
   
    <property name="databaseSchemaUpdate" value="true" />
   
    <property name="jobExecutorActivate" value="false" />
   
    <property name="mailServerHost" value="mail.my-corp.com" />
    <property name="mailServerPort" value="5025" />   
  </bean>

</beans>
</code>

ProcessEngine processEngine = ProcessEngines.getDefaultProcessEngine();

processEngine is still null.

[jbarrez]

Wait you are trying too many things here for me to follo.

Your original setup failes, cause you are asking it to create a process engine standalone in memory. This defaults to h2, which explains your stacktrace.

Si what is your use case? Did you try your activiti.cfg.xml in a simple unit test to see if it works there?

[srón]

Ok, I'll try to do everythin over again, so I deleted my Vaadin7-project and I redeployed the activiti-wars. The manual says:

I wanted to create a process engine like this… 

<code>
ProcessEngine processEngine = ProcessEngines.getDefaultProcessEngine();
</code>

…I did not configure anything else except for chucking an activiti.cfg.xml into the lib so that it can be found. This, too, is not crowned with success, the processengine is still null. Here is the error stack:


<code>
java.lang.NullPointerException
at com.example.workflow.WorkflowUI.init(WorkflowUI.java:47)
at com.vaadin.ui.UI.doInit(UI.java:641)
at com.vaadin.server.communication.UIInitHandler.getBrowserDetailsUI(UIInitHandler.java:222)
at com.vaadin.server.communication.UIInitHandler.synchronizedHandleRequest(UIInitHandler.java:74)
at com.vaadin.server.SynchronizedRequestHandler.handleRequest(SynchronizedRequestHandler.java:41)
at com.vaadin.server.VaadinService.handleRequest(VaadinService.java:1406)
at com.vaadin.server.VaadinServlet.service(VaadinServlet.java:305)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1070)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:611)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Unknown Source)
</code>

So how can this problem be solved? I do not know what got wrong.

[jbarrez]

First off all, try if it works in a regular main().

If so, continue expanding on that.

What is in the com.example.workflow.WorkflowUI.init method that gives the nullpointer?