Пример #1
0
  public static Object eval(String str, Map<String, Object> vars) {
    ParserConfiguration pconf = new ParserConfiguration();
    pconf.addPackageImport("org.kie.internal.task.api.model");
    pconf.addPackageImport("org.jbpm.services.task");
    pconf.addPackageImport("org.jbpm.services.task.impl.model");
    pconf.addPackageImport("org.jbpm.services.task.query");
    pconf.addPackageImport("org.jbpm.services.task.internals.lifecycle");

    pconf.addImport(Status.class);
    pconf.addImport(Allowed.class);
    pconf.addPackageImport("java.util");

    ParserContext context = new ParserContext(pconf);
    Serializable s = MVEL.compileExpression(str.trim(), context);

    if (vars != null) {
      return MVELSafeHelper.getEvaluator().executeExpression(s, vars);
    } else {
      return MVELSafeHelper.getEvaluator().executeExpression(s);
    }
  }
Пример #2
0
  private String resolveVariable(String s) {
    if (s == null) {
      return null;
    }
    // cannot parse delay, trying to interpret it
    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 =
                MVELSafeHelper.getEvaluator()
                    .eval(paramName, new NodeInstanceResolverFactory(this));
            String variableValueString = variableValue == null ? "" : variableValue.toString();
            replacements.put(paramName, variableValueString);
          } catch (Throwable t) {
            logger.error("Could not find variable scope for variable {}", paramName);
            logger.error(
                "when trying to replace variable in processId for sub process {}", getNodeName());
            logger.error("Continuing without setting process id.");
          }
        }
      }
    }
    for (Map.Entry<String, String> replacement : replacements.entrySet()) {
      s = s.replace("#{" + replacement.getKey() + "}", replacement.getValue());
    }

    return s;
  }