Package org.drools.process.instance.context.variable

Examples of org.drools.process.instance.context.variable.VariableScopeInstance

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        }
       
        private Collection<?> evaluateCollectionExpression(String collectionExpression) {
            // TODO: should evaluate this expression using MVEL
          Object collection = null;
            VariableScopeInstance variableScopeInstance = (VariableScopeInstance)
                resolveContextInstance(VariableScope.VARIABLE_SCOPE, collectionExpression);
            if (variableScopeInstance != null) {
              collection = variableScopeInstance.getVariable(collectionExpression);
            } else {
              try {
                collection = MVEL.eval(collectionExpression, new NodeInstanceResolverFactory(this));
              } catch (Throwable t) {
                throw new IllegalArgumentException(
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                }
                String n = join.getN();
                Integer number = null;
                if (n.startsWith("#{") && n.endsWith("}")) {
                  n = n.substring(2, n.length() - 1);
                  VariableScopeInstance variableScopeInstance = (VariableScopeInstance)
                    resolveContextInstance(VariableScope.VARIABLE_SCOPE, n);
                  if (variableScopeInstance == null) {
                    throw new IllegalArgumentException(
                    "Could not find variable " + n + " when executing join.");
                  }
                  Object value = variableScopeInstance.getVariable(n);
                  if (value instanceof Number) {
                    number = ((Number) value).intValue();
                  } else {
                    throw new IllegalArgumentException(
                    "Variable " + n + " did not return a number when executing join: " + value);
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    private static final long serialVersionUID = 510l;

    public void signalEvent(String type, Object event) {
      String variableName = getEventNode().getVariableName();
      if (variableName != null) {
        VariableScopeInstance variableScopeInstance = (VariableScopeInstance)
          resolveContextInstance(VariableScope.VARIABLE_SCOPE, variableName);
        if (variableScopeInstance == null) {
          throw new IllegalArgumentException(
          "Could not find variable for event node: " + variableName);
        }
        EventTransformer transformer = getEventNode().getEventTransformer();
        if (transformer != null) {
          event = transformer.transformEvent(event);
        }
        variableScopeInstance.setVariable(variableName, event);
      }
      triggerCompleted();
    }
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        ((WorkItem) workItem).setProcessInstanceId(getProcessInstance().getId());
        ((WorkItem) workItem).setParameters(new HashMap<String, Object>(work.getParameters()));
        for (Iterator<Map.Entry<String, String>> iterator = workItemNode.getInMappings().entrySet().iterator(); iterator.hasNext(); ) {
            Map.Entry<String, String> mapping = iterator.next();
            Object parameterValue = null;
            VariableScopeInstance variableScopeInstance = (VariableScopeInstance)
                resolveContextInstance(VariableScope.VARIABLE_SCOPE, mapping.getValue());
            if (variableScopeInstance != null) {
              parameterValue = variableScopeInstance.getVariable(mapping.getValue());
            } else {
              try {
                parameterValue = MVEL.eval(mapping.getValue(), new NodeInstanceResolverFactory(this));
              } catch (Throwable t) {
                  System.err.println("Could not find variable scope for variable " + mapping.getValue());
                  System.err.println("when trying to execute Work Item " + work.getName());
                  System.err.println("Continuing without setting parameter.");
              }
            }
            if (parameterValue != null) {
              ((WorkItem) workItem).setParameter(mapping.getKey(), parameterValue);
            }
        }
        for (Map.Entry<String, Object> entry: workItem.getParameters().entrySet()) {
          if (entry.getValue() instanceof String) {
            String s = (String) entry.getValue();
            Map<String, String> replacements = new HashMap<String, String>();
            Matcher matcher = PARAMETER_MATCHER.matcher(s);
                while (matcher.find()) {
                  String paramName = matcher.group(1);
                  if (replacements.get(paramName) == null) {
                  VariableScopeInstance variableScopeInstance = (VariableScopeInstance)
                      resolveContextInstance(VariableScope.VARIABLE_SCOPE, paramName);
                    if (variableScopeInstance != null) {
                        Object variableValue = variableScopeInstance.getVariable(paramName);
                      String variableValueString = variableValue == null ? "" : variableValue.toString();
                      replacements.put(paramName, variableValueString);
                    } else {
                      try {
                        Object variableValue = MVEL.eval(paramName, new NodeInstanceResolverFactory(this));
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      this.workItem = workItem;
      WorkItemNode workItemNode = getWorkItemNode();
      if (workItemNode != null) {
          for (Iterator<Map.Entry<String, String>> iterator = getWorkItemNode().getOutMappings().entrySet().iterator(); iterator.hasNext(); ) {
              Map.Entry<String, String> mapping = iterator.next();
              VariableScopeInstance variableScopeInstance = (VariableScopeInstance)
                  resolveContextInstance(VariableScope.VARIABLE_SCOPE, mapping.getValue());
              if (variableScopeInstance != null) {
                Object value = workItem.getResult(mapping.getKey());
                if (value == null) {
                  try {
                      value = MVEL.eval(mapping.getKey(), new WorkItemResolverFactory(workItem));
                    } catch (Throwable t) {
                      // do nothing
                    }
                }
                  variableScopeInstance.setVariable(mapping.getValue(), value);
              } else {
                  System.err.println("Could not find variable scope for variable " + mapping.getValue());
                  System.err.println("when trying to complete Work Item " + workItem.getName());
                  System.err.println("Continuing without setting variable.");
              }
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    protected Object getFaultData() {
      Object value = null;
      String faultVariable = getFaultNode().getFaultVariable();
      if (faultVariable != null) {
        VariableScopeInstance variableScopeInstance = (VariableScopeInstance)
              resolveContextInstance(VariableScope.VARIABLE_SCOPE, faultVariable);
            if (variableScopeInstance != null) {
                value = variableScopeInstance.getVariable(faultVariable);
            } else {
                System.err.println("Could not find variable scope for variable " + faultVariable);
                System.err.println("when trying to execute fault node " + getFaultNode().getName());
                System.err.println("Continuing without setting value.");
            }
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                "A SubProcess node only accepts default incoming connections!");
        }
        Map<String, Object> parameters = new HashMap<String, Object>();
        for (Map.Entry<String, String> mapping: getSubProcessNode().getInMappings().entrySet()) {
          Object parameterValue = null;
            VariableScopeInstance variableScopeInstance = (VariableScopeInstance)
                resolveContextInstance(VariableScope.VARIABLE_SCOPE, mapping.getValue());
            if (variableScopeInstance != null) {
                parameterValue = variableScopeInstance.getVariable(mapping.getValue());
            } else {
              try {
                parameterValue = MVEL.eval(mapping.getValue(), new NodeInstanceResolverFactory(this));
              } catch (Throwable t) {
                System.err.println("Could not find variable scope for variable " + mapping.getValue());
                    System.err.println("when trying to execute SubProcess node " + getSubProcessNode().getName());
                    System.err.println("Continuing without setting parameter.");
              }
            }
            if (parameterValue != null) {
              parameters.put(mapping.getKey(),parameterValue);
            }
        }
        String processId = getSubProcessNode().getProcessId();
        // resolve processId if necessary
        Map<String, String> replacements = new HashMap<String, String>();
    Matcher matcher = PARAMETER_MATCHER.matcher(processId);
        while (matcher.find()) {
          String paramName = matcher.group(1);
          if (replacements.get(paramName) == null) {
              VariableScopeInstance variableScopeInstance = (VariableScopeInstance)
                  resolveContextInstance(VariableScope.VARIABLE_SCOPE, paramName);
                if (variableScopeInstance != null) {
                    Object variableValue = variableScopeInstance.getVariable(paramName);
                  String variableValueString = variableValue == null ? "" : variableValue.toString();
                  replacements.put(paramName, variableValueString);
                } else {
                  try {
                    Object variableValue = MVEL.eval(paramName, new NodeInstanceResolverFactory(this));
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        handleOutMappings(processInstance);
        triggerCompleted();
    }
   
    private void handleOutMappings(ProcessInstance processInstance) {
        VariableScopeInstance subProcessVariableScopeInstance = (VariableScopeInstance)
          processInstance.getContextInstance(VariableScope.VARIABLE_SCOPE);
      for (Map.Entry<String, String> mapping: getSubProcessNode().getOutMappings().entrySet()) {
          VariableScopeInstance variableScopeInstance = (VariableScopeInstance)
              resolveContextInstance(VariableScope.VARIABLE_SCOPE, mapping.getValue());
          if (variableScopeInstance != null) {
            Object value = subProcessVariableScopeInstance.getVariable(mapping.getKey());
            if (value == null) {
              try {
                  value = MVEL.eval(mapping.getKey(), new VariableScopeResolverFactory(subProcessVariableScopeInstance));
                } catch (Throwable t) {
                  // do nothing
                }
            }
              variableScopeInstance.setVariable(mapping.getValue(), value);
          } else {
              System.err.println("Could not find variable scope for variable " + mapping.getValue());
              System.err.println("when trying to complete SubProcess node " + getSubProcessNode().getName());
              System.err.println("Continuing without setting variable.");
          }
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        }
      }
      return null;
    }
    // else retrieve the variable scope
    VariableScopeInstance variableScopeInstance = (VariableScopeInstance)
      getContextInstance(VariableScope.VARIABLE_SCOPE);
    if (variableScopeInstance == null) {
      return null;
    }
    return variableScopeInstance.getVariable(name);
  }
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                result.putAll(variables);
            }
            return result;
        }
        // else retrieve the variable scope
        VariableScopeInstance variableScopeInstance = (VariableScopeInstance)
            getContextInstance(VariableScope.VARIABLE_SCOPE);
        if (variableScopeInstance == null) {
            return null;
        }
        return variableScopeInstance.getVariables();
  }
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Related Classes of org.drools.process.instance.context.variable.VariableScopeInstance

  • org.drools.common.AbstractWorkingMemory
  • org.drools.integrationtests.ProcessMarchallingTest
  • org.drools.integrationtests.ProcessMilestoneTest$ProcessUtils
  • org.drools.integrationtests.ProcessSplitTest$ProcessUtils
  • org.drools.integrationtests.ProcessSubProcessTest
  • org.drools.integrationtests.ProcessWorkItemTest
  • org.drools.jpdl.instance.node.JpdlNodeInstance$JpdlExecutionContext
  • org.drools.jpdl.instance.node.ProcessStateInstance
  • org.drools.jpdl.instance.node.TaskUtils
  • org.drools.marshalling.impl.AbstractProcessInstanceMarshaller
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