/**
* Check that ph is not null and returns the property value by calling
* ph.getSimplePropertyValue(pd)
*
* @param ph The property holder from which to retrieve the property value.
* @param pd The property to retrieve.
* @return The retrieved property value.
* @throws InvalidModelException Thrown if the property value cannot be retrieved because the
* model is incomplete or otherwise invalid.
* @throws PropertyNotPresentException Thrown if the property is undefined for ph.
* @throws PropertyIsModalException Thrown if ph is modal and declarative.
* @throws IllegalStateException Thrown if the lookup encounters a cycle of property reference
* dependencies.
* @throws IllegalArgumentException Thrown if ph or pd is null.
* @throws PropertyDoesNotApplyToHolderException Thrown if pd does not apply to ph.
* @throws PropertyIsListException Thrown if the property is not scalar.
*/
public static PropertyExpression getSimplePropertyValue(final NamedElement ph, final Property pd)
throws InvalidModelException, PropertyNotPresentException, PropertyIsModalException,
IllegalStateException, IllegalArgumentException, PropertyDoesNotApplyToHolderException,
PropertyIsListException {
if (ph == null) {
throw new IllegalArgumentException("NamedElement ph cannot be null.");
}
PropertyExpression res = ph.getSimplePropertyValue(pd);
if (res instanceof NamedValue) {
AbstractNamedValue nv = ((NamedValue) res).getNamedValue();
if (nv instanceof Property) {
res = ph.getSimplePropertyValue((Property) nv);
} else if (nv instanceof PropertyConstant) {
res = ((PropertyConstant) nv).getConstantValue();
}
}
return res;
}
public static Classifier getClassifierReference(final NamedElement ph, final Property pd) {
if (ph == null) {
return null;
}
try {
final PropertyExpression pv = ph.getSimplePropertyValue(pd);
final Classifier ref = ((ClassifierValueImpl) pv).getClassifier();
return ref;
} catch (PropertyLookupException e) {
return null;
}
}