/**
* Returns the configuring forward method's options in case the given method is annotated with
* {@code @InheritConfiguration} and exactly one such configuring method can unambiguously be
* selected (as per the source/target type and optionally the name given via
* {@code @InheritConfiguration}). The method cannot be marked forward mapping itself (hence
* 'ohter'). And neither can it contain an {@code @InheritReverseConfiguration}
*/
private MappingOptions getTemplateMappingOptions(
List<SourceMethod> rawMethods,
SourceMethod method,
List<SourceMethod> initializingMethods,
MapperConfiguration mapperConfig) {
SourceMethod resultMethod = null;
InheritConfigurationPrism forwardPrism =
InheritConfigurationPrism.getInstanceOn(method.getExecutable());
if (forwardPrism != null) {
reportErrorWhenInheritForwardAlsoHasInheritReverseMapping(method);
List<SourceMethod> candidates = new ArrayList<SourceMethod>();
for (SourceMethod oneMethod : rawMethods) {
// method must be similar but not equal
if (method.canInheritFrom(oneMethod) && !(oneMethod.equals(method))) {
candidates.add(oneMethod);
}
}
String name = forwardPrism.name();
if (candidates.size() == 1) {
// no ambiguity: if no configuredBy is specified, or configuredBy specified and match
SourceMethod sourceMethod = first(candidates);
if (name.isEmpty()) {
resultMethod = sourceMethod;
} else if (sourceMethod.getName().equals(name)) {
resultMethod = sourceMethod;
} else {
reportErrorWhenNonMatchingName(sourceMethod, method, forwardPrism);
}
} else if (candidates.size() > 1) {
// ambiguity: find a matching method that matches configuredBy
List<SourceMethod> nameFilteredcandidates = new ArrayList<SourceMethod>();
for (SourceMethod candidate : candidates) {
if (candidate.getName().equals(name)) {
nameFilteredcandidates.add(candidate);
}
}
if (nameFilteredcandidates.size() == 1) {
resultMethod = first(nameFilteredcandidates);
} else if (nameFilteredcandidates.size() > 1) {
reportErrorWhenSeveralNamesMatch(nameFilteredcandidates, method, forwardPrism);
} else {
reportErrorWhenAmbigousMapping(candidates, method, forwardPrism);
}
}
}
return extractInitializedOptions(resultMethod, rawMethods, mapperConfig, initializingMethods);
}
private void reportErrorWhenNonMatchingName(
SourceMethod onlyCandidate, SourceMethod method, InheritConfigurationPrism prims) {
messager.printMessage(
method.getExecutable(),
prims.mirror,
Message.INHERITCONFIGURATION_NO_NAME_MATCH,
prims.name(),
onlyCandidate.getName());
}
private void reportErrorWhenSeveralNamesMatch(
List<SourceMethod> candidates, SourceMethod method, InheritConfigurationPrism prism) {
messager.printMessage(
method.getExecutable(),
prism.mirror,
Message.INHERITCONFIGURATION_DUPLICATE_MATCHES,
prism.name(),
Strings.join(candidates, ", "));
}
private void reportErrorWhenAmbigousMapping(
List<SourceMethod> candidates, SourceMethod method, InheritConfigurationPrism prism) {
List<String> candidateNames = new ArrayList<String>();
for (SourceMethod candidate : candidates) {
candidateNames.add(candidate.getName());
}
String name = prism.name();
if (name.isEmpty()) {
messager.printMessage(
method.getExecutable(),
prism.mirror,
Message.INHERITCONFIGURATION_DUPLICATES,
Strings.join(candidateNames, "(), "));
} else {
messager.printMessage(
method.getExecutable(),
prism.mirror,
Message.INHERITCONFIGURATION_INVALIDNAME,
Strings.join(candidateNames, "(), "),
name);
}
}