static StringCounter getInstance(QvtOperationalEvaluationEnv env) {
env.getThisOfType(QvtOperationalStdLibrary.INSTANCE.getStdLibModule());
// FIXME - this way we have String counters in global only, should be done
// per Stdlib instance (every aggregated transformation)
StringCounter counters = (StringCounter) env.getContext().getSessionData().getValue(DATA_KEY);
if (counters == null) {
counters = new StringCounter();
env.getContext().getSessionData().setValue(DATA_KEY, counters);
}
return counters;
}
public void run() {
QvtOperationalEvaluationEnv oldEvalEnv = myVisitor.getOperationalEvaluationEnv();
myVisitor.setOperationalEvaluationEnv(myEvalEnv);
Object resolveResult = getResolveResult();
try {
AssignExp assignExp = QvtResolveUtil.getDeferredAssignmentFor(myResolveExp);
if (assignExp != null && myLvalue != null) {
myEvalEnv.callSetter(
myLvalue.getEObject(),
myLvalue.getEStructuralFeature(),
resolveResult,
QvtOperationalUtil.isUndefined(resolveResult, myEvalEnv),
assignExp.isIsReset());
if (myListener != null) {
myListener.notifyAfterDeferredAssign(assignExp, resolveResult);
}
} else {
// there was not appropriate assignment to receive the value
}
} finally {
myVisitor.setOperationalEvaluationEnv(oldEvalEnv);
}
}
private static Object callOperation(
QvtOperationalEvaluationEnv evalEnv,
LibraryOperation libOp,
Object source,
Object[] args,
Class<?> returnClass) {
if (source == null || source == CallHandlerAdapter.getInvalidResult(evalEnv)) {
return CallHandlerAdapter.getInvalidResult(evalEnv);
}
// reset OclInvalid to 'null'
Object[] callArgs = null;
if (args != null) {
for (int i = 0; i < args.length; i++) {
if (evalEnv.isOclInvalid(args[i])) {
if (callArgs == null) {
callArgs = new Object[args.length];
System.arraycopy(args, 0, callArgs, 0, args.length);
}
callArgs[i] = null;
}
}
callArgs = (callArgs == null) ? args : callArgs;
}
Object result = libOp.run(source, callArgs, new Object[0], returnClass);
if (result == null) {
return QvtOperationalUtil.getInvalid(evalEnv);
}
return result;
}
public AbstractLateResolveTask(
ResolveExp resolveExp,
EObjectEStructuralFeaturePair lvalue,
QvtOperationalEvaluationVisitor visitor,
QvtOperationalEvaluationEnv evalEnv,
DeferredAssignmentListener deferredListener) {
myResolveExp = resolveExp;
myLvalue = lvalue;
myVisitor = visitor;
myEvalEnv = evalEnv.createDeferredExecutionEnvironment();
if (myResolveExp.getSource() != null) {
mySourceObj = myResolveExp.getSource().accept(visitor);
}
myListener = deferredListener;
}