protected void _addClassMixIns(AnnotationMap annotations, Class<?> toMask, Class<?> mixin) {
if (mixin == null) {
return;
}
// Ok, first: annotations from mix-in class itself:
for (Annotation a : mixin.getDeclaredAnnotations()) {
if (_annotationIntrospector.isHandled(a)) {
annotations.addIfNotPresent(a);
}
}
/* And then from its supertypes, if any. But note that we will
* only consider super-types up until reaching the masked
* class (if found); this because often mix-in class
* is a sub-class (for convenience reasons). And if so, we
* absolutely must NOT include super types of masked class,
* as that would inverse precedence of annotations.
*/
for (Class<?> parent : ClassUtil.findSuperTypes(mixin, toMask)) {
for (Annotation a : parent.getDeclaredAnnotations()) {
if (_annotationIntrospector.isHandled(a)) {
annotations.addIfNotPresent(a);
}
}
}
}
/**
* Initialization method that will recursively collect Jackson annotations for this class and all
* super classes and interfaces.
*
* <p>Starting with 1.2, it will also apply mix-in annotations, as per [JACKSON-76]
*/
protected void resolveClassAnnotations() {
_classAnnotations = new AnnotationMap();
// add mix-in annotations first (overrides)
if (_primaryMixIn != null) {
_addClassMixIns(_classAnnotations, _class, _primaryMixIn);
}
// first, annotations from the class itself:
for (Annotation a : _class.getDeclaredAnnotations()) {
if (_annotationIntrospector.isHandled(a)) {
_classAnnotations.addIfNotPresent(a);
}
}
// and then from super types
for (Class<?> cls : _superTypes) {
// and mix mix-in annotations in-between
_addClassMixIns(_classAnnotations, cls);
for (Annotation a : cls.getDeclaredAnnotations()) {
if (_annotationIntrospector.isHandled(a)) {
_classAnnotations.addIfNotPresent(a);
}
}
}
/* and finally... any annotations there might be for plain
* old Object.class: separate because for all other purposes
* it is just ignored (not included in super types)
*/
/* 12-Jul-2009, tatu: Should this be done for interfaces too?
* For now, yes, seems useful for some cases, and not harmful
* for any?
*/
_addClassMixIns(_classAnnotations, Object.class);
}
/**
* Method that will add annotations from specified source method to target method, but only if
* target does not yet have them.
*/
protected void _addMixUnders(Method src, AnnotatedMethod target) {
for (Annotation a : src.getDeclaredAnnotations()) {
if (_annotationIntrospector.isHandled(a)) {
target.addIfNotPresent(a);
}
}
}
/**
* Method that will collect all member (non-static) fields that are either public, or have at
* least a single annotation associated with them.
*
* @param collectIgnored Whether to collect list of ignored methods for later retrieval
*/
public void resolveFields(boolean collectIgnored) {
LinkedHashMap<String, AnnotatedField> foundFields = new LinkedHashMap<String, AnnotatedField>();
_addFields(foundFields, _class);
/* And last but not least: let's remove all fields that are
* deemed to be ignorable after all annotations have been
* properly collapsed.
*/
Iterator<Map.Entry<String, AnnotatedField>> it = foundFields.entrySet().iterator();
while (it.hasNext()) {
AnnotatedField f = it.next().getValue();
if (_annotationIntrospector.isIgnorableField(f)) {
it.remove();
if (collectIgnored) {
_ignoredFields = ArrayBuilders.addToList(_ignoredFields, f);
}
} else {
}
}
if (foundFields.isEmpty()) {
_fields = Collections.emptyList();
} else {
_fields = new ArrayList<AnnotatedField>(foundFields.size());
_fields.addAll(foundFields.values());
}
}
/**
* Method for resolving member method information: aggregating all non-static methods and
* combining annotations (to implement method-annotation inheritance)
*
* @param collectIgnored Whether to collect list of ignored methods for later retrieval
*/
public void resolveMemberMethods(MethodFilter methodFilter, boolean collectIgnored) {
_memberMethods = new AnnotatedMethodMap();
AnnotatedMethodMap mixins = new AnnotatedMethodMap();
// first: methods from the class itself
_addMemberMethods(_class, methodFilter, _memberMethods, _primaryMixIn, mixins);
// and then augment these with annotations from super-types:
for (Class<?> cls : _superTypes) {
Class<?> mixin = (_mixInResolver == null) ? null : _mixInResolver.findMixInClassFor(cls);
_addMemberMethods(cls, methodFilter, _memberMethods, mixin, mixins);
}
// Special case: mix-ins for Object.class? (to apply to ALL classes)
if (_mixInResolver != null) {
Class<?> mixin = _mixInResolver.findMixInClassFor(Object.class);
if (mixin != null) {
_addMethodMixIns(methodFilter, _memberMethods, mixin, mixins);
}
}
/* Any unmatched mix-ins? Most likely error cases (not matching
* any method); but there is one possible real use case:
* exposing Object#hashCode (alas, Object#getClass can NOT be
* exposed, see [JACKSON-140])
*/
if (!mixins.isEmpty()) {
Iterator<AnnotatedMethod> it = mixins.iterator();
while (it.hasNext()) {
AnnotatedMethod mixIn = it.next();
try {
Method m = Object.class.getDeclaredMethod(mixIn.getName(), mixIn.getParameterClasses());
if (m != null) {
AnnotatedMethod am = _constructMethod(m);
_addMixOvers(mixIn.getAnnotated(), am, false);
_memberMethods.add(am);
}
} catch (Exception e) {
}
}
}
/* And last but not least: let's remove all methods that are
* deemed to be ignorable after all annotations have been
* properly collapsed.
*/
Iterator<AnnotatedMethod> it = _memberMethods.iterator();
while (it.hasNext()) {
AnnotatedMethod am = it.next();
if (_annotationIntrospector.isIgnorableMethod(am)) {
it.remove();
if (collectIgnored) {
_ignoredMethods = ArrayBuilders.addToList(_ignoredMethods, am);
}
}
}
}
protected AnnotationMap _collectRelevantAnnotations(Annotation[] anns) {
AnnotationMap annMap = new AnnotationMap();
if (anns != null) {
for (Annotation a : anns) {
if (_annotationIntrospector.isHandled(a)) {
annMap.add(a);
}
}
}
return annMap;
}
/** @param addParamAnnotations Whether parameter annotations are to be added as well */
protected void _addMixOvers(Method mixin, AnnotatedMethod target, boolean addParamAnnotations) {
for (Annotation a : mixin.getDeclaredAnnotations()) {
if (_annotationIntrospector.isHandled(a)) {
target.addOrOverride(a);
}
}
if (addParamAnnotations) {
Annotation[][] pa = mixin.getParameterAnnotations();
for (int i = 0, len = pa.length; i < len; ++i) {
for (Annotation a : pa[i]) {
target.addOrOverrideParam(i, a);
}
}
}
}
/**
* Method called to add field mix-ins from given mix-in class (and its fields) into already
* collected actual fields (from introspected classes and their super-classes)
*/
protected void _addFieldMixIns(Class<?> mixin, Map<String, AnnotatedField> fields) {
for (Field mixinField : mixin.getDeclaredFields()) {
/* there are some dummy things (static, synthetic); better
* ignore
*/
if (!_isIncludableField(mixinField)) {
continue;
}
String name = mixinField.getName();
// anything to mask? (if not, quietly ignore)
AnnotatedField maskedField = fields.get(name);
if (maskedField != null) {
for (Annotation a : mixinField.getDeclaredAnnotations()) {
if (_annotationIntrospector.isHandled(a)) {
maskedField.addOrOverride(a);
}
}
}
}
}
/**
* Initialization method that will find out all constructors and potential static factory methods
* the class has.
*
* <p>Starting with 1.2, it will also apply mix-in annotations, as per [JACKSON-76]
*
* @param includeAll If true, includes all creator methods; if false, will only include the
* no-arguments "default" constructor
*/
public void resolveCreators(boolean includeAll) {
// Then see which constructors we have
_constructors = null;
for (Constructor<?> ctor : _class.getDeclaredConstructors()) {
switch (ctor.getParameterTypes().length) {
case 0:
_defaultConstructor = _constructConstructor(ctor, true);
break;
default:
if (includeAll) {
if (_constructors == null) {
_constructors = new ArrayList<AnnotatedConstructor>();
}
_constructors.add(_constructConstructor(ctor, false));
}
}
}
// and if need be, augment with mix-ins
if (_primaryMixIn != null) {
if (_defaultConstructor != null || _constructors != null) {
_addConstructorMixIns(_primaryMixIn);
}
}
/* And then... let's remove all constructors that are
* deemed to be ignorable after all annotations have been
* properly collapsed.
*/
if (_defaultConstructor != null) {
if (_annotationIntrospector.isIgnorableConstructor(_defaultConstructor)) {
_defaultConstructor = null;
}
}
if (_constructors != null) {
// count down to allow safe removal
for (int i = _constructors.size(); --i >= 0; ) {
if (_annotationIntrospector.isIgnorableConstructor(_constructors.get(i))) {
_constructors.remove(i);
}
}
}
_creatorMethods = null;
if (includeAll) {
/* Then static methods which are potential factory
* methods
*/
for (Method m : _class.getDeclaredMethods()) {
if (!Modifier.isStatic(m.getModifiers())) {
continue;
}
int argCount = m.getParameterTypes().length;
// factory methods take at least one arg:
if (argCount < 1) {
continue;
}
if (_creatorMethods == null) {
_creatorMethods = new ArrayList<AnnotatedMethod>();
}
_creatorMethods.add(_constructCreatorMethod(m));
}
// mix-ins to mix in?
if (_primaryMixIn != null && _creatorMethods != null) {
_addFactoryMixIns(_primaryMixIn);
}
// anything to ignore at this point?
if (_creatorMethods != null) {
// count down to allow safe removal
for (int i = _creatorMethods.size(); --i >= 0; ) {
if (_annotationIntrospector.isIgnorableMethod(_creatorMethods.get(i))) {
_creatorMethods.remove(i);
}
}
}
}
}
