use of com.walmartlabs.concord.runtime.v2.runner.el.ExpressionEvaluator in project concord by walmartlabs.
the class WithItemsWrapper method eval.
@Override
@SuppressWarnings("unchecked")
public void eval(Runtime runtime, State state, ThreadId threadId) {
Frame frame = state.peekFrame(threadId);
frame.pop();
Serializable value = withItems.value();
if (value == null) {
// value is null, not going to run the wrapped command at all
return;
}
Step currentStep = null;
if (cmd instanceof StepCommand) {
currentStep = ((StepCommand<?>) cmd).getStep();
}
// create the context explicitly
ContextFactory contextFactory = runtime.getService(ContextFactory.class);
Context ctx = contextFactory.create(runtime, state, threadId, currentStep);
ExpressionEvaluator ee = runtime.getService(ExpressionEvaluator.class);
value = ee.eval(EvalContextFactory.global(ctx), value, Serializable.class);
// prepare items
// store items in an ArrayList because it is Serializable
ArrayList<Serializable> items;
if (value == null) {
// value is null, not going to run the wrapped command at all
return;
} else if (value instanceof Collection) {
Collection<Serializable> v = (Collection<Serializable>) value;
if (v.isEmpty()) {
// no items, nothing to do
return;
}
items = new ArrayList<>(v);
} else if (value instanceof Map) {
Map<Serializable, Serializable> m = (Map<Serializable, Serializable>) value;
items = m.entrySet().stream().map(e -> new AbstractMap.SimpleImmutableEntry<>(e.getKey(), e.getValue())).collect(Collectors.toCollection(ArrayList::new));
} else if (value.getClass().isArray()) {
items = new ArrayList<>(Arrays.asList((Serializable[]) value));
} else {
throw new IllegalArgumentException("'withItems' accepts only Lists of items, Java Maps or arrays of values. Got: " + value.getClass());
}
items.forEach(WithItemsWrapper::assertItem);
if (items.isEmpty()) {
return;
}
eval(state, threadId, items);
}
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