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);
}
}
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;
}