Ejemplo n.º 1
0
  public static Object unmarshall(byte[] content, Environment env, ClassLoader classloader) {
    MarshallerReaderContext context = null;
    try {
      ByteArrayInputStream stream = new ByteArrayInputStream(content);
      MarshallingConfigurationImpl marshallingConfigurationImpl = null;
      if (env != null) {
        marshallingConfigurationImpl =
            new MarshallingConfigurationImpl(
                (ObjectMarshallingStrategy[])
                    env.get(EnvironmentName.OBJECT_MARSHALLING_STRATEGIES),
                false,
                false);
      } else {
        marshallingConfigurationImpl =
            new MarshallingConfigurationImpl(
                new ObjectMarshallingStrategy[] {
                  new SerializablePlaceholderResolverStrategy(
                      ClassObjectMarshallingStrategyAcceptor.DEFAULT)
                },
                false,
                false);
      }
      ObjectMarshallingStrategyStore objectMarshallingStrategyStore =
          marshallingConfigurationImpl.getObjectMarshallingStrategyStore();
      context =
          new MarshallerReaderContext(
              stream, null, null, objectMarshallingStrategyStore, null, env);
      if (classloader != null) {
        context.classLoader = classloader;
      } else {
        context.classLoader = ContentMarshallerHelper.class.getClassLoader();
      }
      ExtensionRegistry registry = PersisterHelper.buildRegistry(context, null);
      Header _header = PersisterHelper.readFromStreamWithHeader(context, registry);
      Variable parseFrom = JBPMMessages.Variable.parseFrom(_header.getPayload(), registry);
      Object value = ProtobufProcessMarshaller.unmarshallVariableValue(context, parseFrom);

      if (value instanceof Map) {
        Map result = new HashMap();
        Map<String, Variable> variablesMap = (Map<String, Variable>) value;
        for (String key : variablesMap.keySet()) {
          result.put(
              key,
              ProtobufProcessMarshaller.unmarshallVariableValue(context, variablesMap.get(key)));
        }
        return result;
      }
      return value;
    } catch (Exception ex) {
      ex.printStackTrace();
    }
    return null;
  }
  // Input methods
  public ProcessInstance readProcessInstance(MarshallerReaderContext context) throws IOException {
    InternalRuleBase ruleBase = context.ruleBase;
    InternalWorkingMemory wm = context.wm;

    JBPMMessages.ProcessInstance _instance =
        (org.jbpm.marshalling.impl.JBPMMessages.ProcessInstance) context.parameterObject;
    if (_instance == null) {
      // try to parse from the stream
      ExtensionRegistry registry = PersisterHelper.buildRegistry(context, null);
      Header _header;
      try {
        _header = PersisterHelper.readFromStreamWithHeader(context, registry);
      } catch (ClassNotFoundException e) {
        // Java 5 does not accept [new IOException(String, Throwable)]
        IOException ioe = new IOException("Error deserializing process instance.");
        ioe.initCause(e);
        throw ioe;
      }
      _instance = JBPMMessages.ProcessInstance.parseFrom(_header.getPayload(), registry);
    }

    WorkflowProcessInstanceImpl processInstance = createProcessInstance();
    processInstance.setId(_instance.getId());
    String processId = _instance.getProcessId();
    processInstance.setProcessId(processId);
    String processXml = _instance.getProcessXml();
    Process process = null;
    if (processXml != null && processXml.trim().length() > 0) {
      processInstance.setProcessXml(processXml);
      process = processInstance.getProcess();
    } else {
      process = ruleBase.getProcess(processId);
      processInstance.setProcess(process);
    }
    processInstance.setState(_instance.getState());
    long nodeInstanceCounter = _instance.getNodeInstanceCounter();
    processInstance.setKnowledgeRuntime(wm.getKnowledgeRuntime());

    if (_instance.getSwimlaneContextCount() > 0) {
      Context swimlaneContext =
          ((org.jbpm.process.core.Process) process)
              .getDefaultContext(SwimlaneContext.SWIMLANE_SCOPE);
      SwimlaneContextInstance swimlaneContextInstance =
          (SwimlaneContextInstance) processInstance.getContextInstance(swimlaneContext);
      for (JBPMMessages.ProcessInstance.SwimlaneContextInstance _swimlane :
          _instance.getSwimlaneContextList()) {
        swimlaneContextInstance.setActorId(_swimlane.getSwimlane(), _swimlane.getActorId());
      }
    }

    for (JBPMMessages.ProcessInstance.NodeInstance _node : _instance.getNodeInstanceList()) {
      context.parameterObject = _node;
      readNodeInstance(context, processInstance, processInstance);
    }

    for (JBPMMessages.ProcessInstance.ExclusiveGroupInstance _excl :
        _instance.getExclusiveGroupList()) {
      ExclusiveGroupInstance exclusiveGroupInstance = new ExclusiveGroupInstance();
      processInstance.addContextInstance(ExclusiveGroup.EXCLUSIVE_GROUP, exclusiveGroupInstance);
      for (Long nodeInstanceId : _excl.getGroupNodeInstanceIdList()) {
        NodeInstance nodeInstance = processInstance.getNodeInstance(nodeInstanceId);
        if (nodeInstance == null) {
          throw new IllegalArgumentException(
              "Could not find node instance when deserializing exclusive group instance: "
                  + nodeInstanceId);
        }
        exclusiveGroupInstance.addNodeInstance(nodeInstance);
      }
    }

    if (_instance.getVariableCount() > 0) {
      Context variableScope =
          ((org.jbpm.process.core.Process) process).getDefaultContext(VariableScope.VARIABLE_SCOPE);
      VariableScopeInstance variableScopeInstance =
          (VariableScopeInstance) processInstance.getContextInstance(variableScope);
      for (JBPMMessages.Variable _variable : _instance.getVariableList()) {
        try {
          Object _value = ProtobufProcessMarshaller.unmarshallVariableValue(context, _variable);
          variableScopeInstance.internalSetVariable(_variable.getName(), _value);
        } catch (ClassNotFoundException e) {
          throw new IllegalArgumentException("Could not reload variable " + _variable.getName());
        }
      }
    }
    processInstance.internalSetNodeInstanceCounter(nodeInstanceCounter);
    if (wm != null) {
      processInstance.reconnect();
    }
    return processInstance;
  }