/**
* Extracts expected variables from the environmet.
*
* @param expectedVariables
* @param environment
* @return
*/
private Map<String, Variable> getResultMap(
List<String> expectedVariables, Environment environment) {
Map<String, Variable> resultMap = new HashMap<String, Variable>();
/*
* foreach expectedVariables get it from environment put into the
* resultMap
*/
for (String varName : expectedVariables) {
Variable variable = environment.getUncheckedVariable(varName);
resultMap.put(varName, variable);
}
return resultMap;
}
/**
* Executes node and push result of execution into environment
*
* @param node - to be executed
* @param environment - in which the execution will take place, and result will be pushed in.
* @throws CallerException
*/
private void executeInternal(Node node, Environment environment) throws CallerException {
String nodeIdentifier = node.getId();
Object nodeExecutionResult = node.execute(environment);
Variable nodeResult = VariableFactory.newInstance(nodeExecutionResult);
environment.addOrUpdateVariable(nodeIdentifier, nodeResult);
}