com.fitbur.jackson.databind.introspect.AnnotatedClass Maven / Gradle / Ivy
package com.fitbur.jackson.databind.introspect;
import java.lang.annotation.Annotation;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;
import java.lang.reflect.*;
import java.util.*;
import com.fitbur.jackson.databind.AnnotationIntrospector;
import com.fitbur.jackson.databind.JavaType;
import com.fitbur.jackson.databind.cfg.MapperConfig;
import com.fitbur.jackson.databind.introspect.ClassIntrospector.MixInResolver;
import com.fitbur.jackson.databind.type.TypeBindings;
import com.fitbur.jackson.databind.type.TypeFactory;
import com.fitbur.jackson.databind.util.Annotations;
import com.fitbur.jackson.databind.util.ClassUtil;
public final class AnnotatedClass
extends Annotated
implements TypeResolutionContext
{
private final static AnnotationMap[] NO_ANNOTATION_MAPS = new AnnotationMap[0];
/*
/**********************************************************
/* Configuration
/**********************************************************
*/
/**
* @since 2.7
*/
final protected JavaType _type;
/**
* Class for which annotations apply, and that owns other
* components (constructors, methods)
*/
final protected Class _class;
/**
* Type bindings to use for members of {@link #_class}.
*
* @since 2.7
*/
final protected TypeBindings _bindings;
/**
* Ordered set of super classes and interfaces of the
* class itself: included in order of precedence
*
* NOTE: changed in 2.7 from List of Classes to List of {@link JavaType}s.
*/
final protected List _superTypes;
/**
* Filter used to determine which annotations to gather; used
* to optimize things so that unnecessary annotations are
* ignored.
*/
final protected AnnotationIntrospector _annotationIntrospector;
/**
* @since 2.7
*/
final protected TypeFactory _typeFactory;
/**
* Object that knows mapping of mix-in classes (ones that contain
* annotations to add) with their target classes (ones that
* get these additional annotations "mixed in").
*/
final protected MixInResolver _mixInResolver;
/**
* Primary mix-in class; one to use for the annotated class
* itself. Can be null.
*/
final protected Class _primaryMixIn;
/*
/**********************************************************
/* Gathered information
/**********************************************************
*/
/**
* Combined list of Jackson annotations that the class has,
* including inheritable ones from super classes and interfaces
*/
protected AnnotationMap _classAnnotations;
/**
* Flag to indicate whether creator information has been resolved
* or not.
*/
protected boolean _creatorsResolved = false;
/**
* Default constructor of the annotated class, if it has one.
*/
protected AnnotatedConstructor _defaultConstructor;
/**
* Single argument constructors the class has, if any.
*/
protected List _constructors;
/**
* Single argument static methods that might be usable
* as factory methods
*/
protected List _creatorMethods;
/**
* Member methods of interest; for now ones with 0 or 1 arguments
* (just optimization, since others won't be used now)
*/
protected AnnotatedMethodMap _memberMethods;
/**
* Member fields of interest: ones that are either public,
* or have at least one annotation.
*/
protected List _fields;
/*
/**********************************************************
/* Life-cycle
/**********************************************************
*/
/**
* Constructor will not do any initializations, to allow for
* configuring instances differently depending on use cases
*/
private AnnotatedClass(JavaType type, Class rawType, TypeBindings bindings,
List superTypes,
AnnotationIntrospector aintr, MixInResolver mir, TypeFactory tf,
AnnotationMap classAnnotations)
{
_type = type;
_class = rawType;
_bindings = bindings;
_superTypes = superTypes;
_annotationIntrospector = aintr;
_typeFactory = tf;
_mixInResolver = mir;
_primaryMixIn = (_mixInResolver == null) ? null
: _mixInResolver.findMixInClassFor(_class);
_classAnnotations = classAnnotations;
}
@Override
public AnnotatedClass withAnnotations(AnnotationMap ann) {
return new AnnotatedClass(_type, _class, _bindings, _superTypes,
_annotationIntrospector, _mixInResolver, _typeFactory, ann);
}
/**
* Factory method that instantiates an instance. Returned instance
* will only be initialized with class annotations, but not with
* any method information.
*
* @since 2.7
*/
public static AnnotatedClass construct(JavaType type, MapperConfig config) {
AnnotationIntrospector intr = config.isAnnotationProcessingEnabled()
? config.getAnnotationIntrospector() : null;
Class raw = type.getRawClass();
return new AnnotatedClass(type, raw, type.getBindings(),
ClassUtil.findSuperTypes(type, null, false), intr,
(MixInResolver) config, config.getTypeFactory(), null);
}
/**
* @since 2.7
*/
public static AnnotatedClass construct(JavaType type, MapperConfig config,
MixInResolver mir)
{
AnnotationIntrospector intr = config.isAnnotationProcessingEnabled()
? config.getAnnotationIntrospector() : null;
Class raw = type.getRawClass();
return new AnnotatedClass(type, raw, type.getBindings(),
ClassUtil.findSuperTypes(type, null, false),
intr, mir, config.getTypeFactory(), null);
}
/**
* Method similar to {@link #construct}, but that will NOT include
* information from supertypes; only class itself and any direct
* mix-ins it may have.
*/
public static AnnotatedClass constructWithoutSuperTypes(Class cls, MapperConfig config)
{
if (config == null) {
return new AnnotatedClass(null, cls, TypeBindings.emptyBindings(),
Collections.emptyList(), null, null, null, null);
}
AnnotationIntrospector intr = config.isAnnotationProcessingEnabled()
? config.getAnnotationIntrospector() : null;
return new AnnotatedClass(null, cls, TypeBindings.emptyBindings(),
Collections.emptyList(), intr, (MixInResolver) config, config.getTypeFactory(), null);
}
public static AnnotatedClass constructWithoutSuperTypes(Class cls, MapperConfig config,
MixInResolver mir)
{
if (config == null) {
return new AnnotatedClass(null, cls, TypeBindings.emptyBindings(),
Collections.emptyList(), null, null, null, null);
}
AnnotationIntrospector intr = config.isAnnotationProcessingEnabled()
? config.getAnnotationIntrospector() : null;
return new AnnotatedClass(null, cls, TypeBindings.emptyBindings(),
Collections.emptyList(), intr, mir, config.getTypeFactory(), null);
}
/*
/**********************************************************
/* TypeResolutionContext implementation
/**********************************************************
*/
@Override
public JavaType resolveType(Type type) {
return _typeFactory.constructType(type, _bindings);
}
/*
/**********************************************************
/* Annotated impl
/**********************************************************
*/
@Override
public Class getAnnotated() { return _class; }
@Override
public int getModifiers() { return _class.getModifiers(); }
@Override
public String getName() { return _class.getName(); }
@Override
public A getAnnotation(Class acls) {
return _classAnnotations().get(acls);
}
@Override
public boolean hasAnnotation(Class acls) {
return _classAnnotations().has(acls);
}
@Override
public boolean hasOneOf(Class[] annoClasses) {
return _classAnnotations().hasOneOf(annoClasses);
}
@Override
public Class getRawType() {
return _class;
}
@Override
public Iterable annotations() {
return _classAnnotations().annotations();
}
@Override
protected AnnotationMap getAllAnnotations() {
return _classAnnotations();
}
@Override
public JavaType getType() {
return _type;
}
/*
/**********************************************************
/* Public API, generic accessors
/**********************************************************
*/
public Annotations getAnnotations() {
return _classAnnotations();
}
public boolean hasAnnotations() {
return _classAnnotations().size() > 0;
}
public AnnotatedConstructor getDefaultConstructor()
{
if (!_creatorsResolved) {
resolveCreators();
}
return _defaultConstructor;
}
public List getConstructors()
{
if (!_creatorsResolved) {
resolveCreators();
}
return _constructors;
}
public List getStaticMethods()
{
if (!_creatorsResolved) {
resolveCreators();
}
return _creatorMethods;
}
public Iterable memberMethods()
{
if (_memberMethods == null) {
resolveMemberMethods();
}
return _memberMethods;
}
public int getMemberMethodCount()
{
if (_memberMethods == null) {
resolveMemberMethods();
}
return _memberMethods.size();
}
public AnnotatedMethod findMethod(String name, Class[] paramTypes)
{
if (_memberMethods == null) {
resolveMemberMethods();
}
return _memberMethods.find(name, paramTypes);
}
public int getFieldCount() {
if (_fields == null) {
resolveFields();
}
return _fields.size();
}
public Iterable fields()
{
if (_fields == null) {
resolveFields();
}
return _fields;
}
/*
/**********************************************************
/* Public API, main-level resolution methods
/**********************************************************
*/
private AnnotationMap _classAnnotations() {
AnnotationMap anns = _classAnnotations;
if (anns == null) {
// 06-Dec-2015, tatu: yes, double-locking, typically not a good choice.
// But for typical usage pattern here (and with JVM 7 and above) is
// a reasonable choice to avoid non-common but existing race condition
// from root name lookup style usage
// Also note that race condition stems from caching only used for loading
// where just class annotations are needed
synchronized (this) {
anns = _classAnnotations;
if (anns == null) {
anns = _resolveClassAnnotations();
_classAnnotations = anns;
}
}
}
return anns;
}
/**
* Initialization method that will recursively collect Jackson
* annotations for this class and all super classes and
* interfaces.
*/
private AnnotationMap _resolveClassAnnotations()
{
AnnotationMap ca = new AnnotationMap();
// Should skip processing if annotation processing disabled
if (_annotationIntrospector != null) {
// add mix-in annotations first (overrides)
if (_primaryMixIn != null) {
_addClassMixIns(ca, _class, _primaryMixIn);
}
// first, annotations from the class itself:
_addAnnotationsIfNotPresent(ca,
ClassUtil.findClassAnnotations(_class));
// and then from super types
for (JavaType type : _superTypes) {
// and mix mix-in annotations in-between
_addClassMixIns(ca, type);
_addAnnotationsIfNotPresent(ca,
ClassUtil.findClassAnnotations(type.getRawClass()));
}
/* 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(ca, Object.class);
}
return ca;
}
/**
* Initialization method that will find out all constructors
* and potential static factory methods the class has.
*/
private void resolveCreators()
{
// Then see which constructors we have
List constructors = null;
ClassUtil.Ctor[] declaredCtors = ClassUtil.getConstructors(_class);
// Constructor also always members of this class, so
TypeResolutionContext typeContext = this;
for (ClassUtil.Ctor ctor : declaredCtors) {
if (_isIncludableConstructor(ctor.getConstructor())) {
if (ctor.getParamCount() == 0) {
_defaultConstructor = _constructDefaultConstructor(ctor, typeContext);
} else {
if (constructors == null) {
constructors = new ArrayList(Math.max(10, declaredCtors.length));
}
constructors.add(_constructNonDefaultConstructor(ctor, typeContext));
}
}
}
if (constructors == null) {
_constructors = Collections.emptyList();
} else {
_constructors = constructors;
}
// and if need be, augment with mix-ins
if (_primaryMixIn != null) {
if (_defaultConstructor != null || !_constructors.isEmpty()) {
_addConstructorMixIns(_primaryMixIn);
}
}
/* And then... let's remove all constructors that are deemed
* ignorable after all annotations have been properly collapsed.
*/
// AnnotationIntrospector is null if annotations not enabled; if so, can skip:
if (_annotationIntrospector != null) {
if (_defaultConstructor != null) {
if (_annotationIntrospector.hasIgnoreMarker(_defaultConstructor)) {
_defaultConstructor = null;
}
}
if (_constructors != null) {
// count down to allow safe removal
for (int i = _constructors.size(); --i >= 0; ) {
if (_annotationIntrospector.hasIgnoreMarker(_constructors.get(i))) {
_constructors.remove(i);
}
}
}
}
List creatorMethods = null;
// Then static methods which are potential factory methods
for (Method m : _findClassMethods(_class)) {
if (!Modifier.isStatic(m.getModifiers())) {
continue;
}
// all factory methods are fine:
//int argCount = m.getParameterTypes().length;
if (creatorMethods == null) {
creatorMethods = new ArrayList(8);
}
creatorMethods.add(_constructCreatorMethod(m, typeContext));
}
if (creatorMethods == null) {
_creatorMethods = Collections.emptyList();
} else {
_creatorMethods = creatorMethods;
// mix-ins to mix in?
if (_primaryMixIn != null) {
_addFactoryMixIns(_primaryMixIn);
}
// anything to ignore at this point?
if (_annotationIntrospector != null) {
// count down to allow safe removal
for (int i = _creatorMethods.size(); --i >= 0; ) {
if (_annotationIntrospector.hasIgnoreMarker(_creatorMethods.get(i))) {
_creatorMethods.remove(i);
}
}
}
}
_creatorsResolved = true;
}
/**
* Method for resolving member method information: aggregating all non-static methods
* and combining annotations (to implement method-annotation inheritance)
*
* @param methodFilter Filter used to determine which methods to include
*/
private void resolveMemberMethods()
{
_memberMethods = new AnnotatedMethodMap();
AnnotatedMethodMap mixins = new AnnotatedMethodMap();
// first: methods from the class itself
_addMemberMethods(_class, this, _memberMethods, _primaryMixIn, mixins);
// and then augment these with annotations from super-types:
for (JavaType type : _superTypes) {
Class mixin = (_mixInResolver == null) ? null : _mixInResolver.findMixInClassFor(type.getRawClass());
TypeResolutionContext typeContext = new TypeResolutionContext.Basic(_typeFactory,
type.getBindings());
_addMemberMethods(type.getRawClass(), typeContext, _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(_class, _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])
*/
// 14-Feb-2011, tatu: AnnotationIntrospector is null if annotations not enabled; if so, can skip:
if (_annotationIntrospector != null) {
if (!mixins.isEmpty()) {
Iterator it = mixins.iterator();
while (it.hasNext()) {
AnnotatedMethod mixIn = it.next();
try {
Method m = Object.class.getDeclaredMethod(mixIn.getName(), mixIn.getRawParameterTypes());
if (m != null) {
// Since it's from java.lang.Object, no generics, no need for real type context:
AnnotatedMethod am = _constructMethod(m, this);
_addMixOvers(mixIn.getAnnotated(), am, false);
_memberMethods.add(am);
}
} catch (Exception e) { }
}
}
}
}
/**
* Method that will collect all member (non-static) fields
* that are either public, or have at least a single annotation
* associated with them.
*/
private void resolveFields()
{
Map foundFields = _findFields(_type, this, null);
if (foundFields == null || foundFields.size() == 0) {
_fields = Collections.emptyList();
} else {
_fields = new ArrayList(foundFields.size());
_fields.addAll(foundFields.values());
}
}
/*
/**********************************************************
/* Helper methods for resolving class annotations
/* (resolution consisting of inheritance, overrides,
/* and injection of mix-ins as necessary)
/**********************************************************
*/
/**
* Helper method for adding any mix-in annotations specified
* class might have.
*/
protected void _addClassMixIns(AnnotationMap annotations, JavaType target)
{
if (_mixInResolver != null) {
final Class toMask = target.getRawClass();
_addClassMixIns(annotations, toMask, _mixInResolver.findMixInClassFor(toMask));
}
}
protected void _addClassMixIns(AnnotationMap annotations, Class target)
{
if (_mixInResolver != null) {
_addClassMixIns(annotations, target, _mixInResolver.findMixInClassFor(target));
}
}
protected void _addClassMixIns(AnnotationMap annotations, Class toMask,
Class mixin)
{
if (mixin == null) {
return;
}
// Ok, first: annotations from mix-in class itself:
_addAnnotationsIfNotPresent(annotations, ClassUtil.findClassAnnotations(mixin));
/* 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.findSuperClasses(mixin, toMask, false)) {
_addAnnotationsIfNotPresent(annotations, ClassUtil.findClassAnnotations(parent));
}
}
/*
/**********************************************************
/* Helper methods for populating creator (ctor, factory) information
/**********************************************************
*/
protected void _addConstructorMixIns(Class mixin)
{
MemberKey[] ctorKeys = null;
int ctorCount = (_constructors == null) ? 0 : _constructors.size();
for (ClassUtil.Ctor ctor0 : ClassUtil.getConstructors(mixin)) {
Constructor ctor = ctor0.getConstructor();
if (ctor.getParameterTypes().length == 0) {
if (_defaultConstructor != null) {
_addMixOvers(ctor, _defaultConstructor, false);
}
} else {
if (ctorKeys == null) {
ctorKeys = new MemberKey[ctorCount];
for (int i = 0; i < ctorCount; ++i) {
ctorKeys[i] = new MemberKey(_constructors.get(i).getAnnotated());
}
}
MemberKey key = new MemberKey(ctor);
for (int i = 0; i < ctorCount; ++i) {
if (!key.equals(ctorKeys[i])) {
continue;
}
_addMixOvers(ctor, _constructors.get(i), true);
break;
}
}
}
}
protected void _addFactoryMixIns(Class mixin)
{
MemberKey[] methodKeys = null;
int methodCount = _creatorMethods.size();
for (Method m : ClassUtil.getDeclaredMethods(mixin)) {
if (!Modifier.isStatic(m.getModifiers())) {
continue;
}
if (m.getParameterTypes().length == 0) {
continue;
}
if (methodKeys == null) {
methodKeys = new MemberKey[methodCount];
for (int i = 0; i < methodCount; ++i) {
methodKeys[i] = new MemberKey(_creatorMethods.get(i).getAnnotated());
}
}
MemberKey key = new MemberKey(m);
for (int i = 0; i < methodCount; ++i) {
if (!key.equals(methodKeys[i])) {
continue;
}
_addMixOvers(m, _creatorMethods.get(i), true);
break;
}
}
}
/*
/**********************************************************
/* Helper methods for populating method information
/**********************************************************
*/
protected void _addMemberMethods(Class cls, TypeResolutionContext typeContext,
AnnotatedMethodMap methods,
Class mixInCls, AnnotatedMethodMap mixIns)
{
// first, mixIns, since they have higher priority then class methods
if (mixInCls != null) {
_addMethodMixIns(cls, methods, mixInCls, mixIns);
}
if (cls == null) { // just so caller need not check when passing super-class
return;
}
// then methods from the class itself
for (Method m : _findClassMethods(cls)) {
if (!_isIncludableMemberMethod(m)) {
continue;
}
AnnotatedMethod old = methods.find(m);
if (old == null) {
AnnotatedMethod newM = _constructMethod(m, typeContext);
methods.add(newM);
// Ok, but is there a mix-in to connect now?
old = mixIns.remove(m);
if (old != null) {
_addMixOvers(old.getAnnotated(), newM, false);
}
} else {
/* If sub-class already has the method, we only want to augment
* annotations with entries that are not masked by sub-class.
*/
_addMixUnders(m, old);
/* 06-Jan-2010, tatu: [JACKSON-450] Except that if method we saw first is
* from an interface, and we now find a non-interface definition, we should
* use this method, but with combination of annotations.
* This helps (or rather, is essential) with JAXB annotations and
* may also result in faster method calls (interface calls are slightly
* costlier than regular method calls)
*/
if (old.getDeclaringClass().isInterface() && !m.getDeclaringClass().isInterface()) {
methods.add(old.withMethod(m));
}
}
}
}
protected void _addMethodMixIns(Class targetClass, AnnotatedMethodMap methods,
Class mixInCls, AnnotatedMethodMap mixIns)
{
// List> parents = ClassUtil.findSuperClasses(mixInCls, targetClass, true);
List> parents = ClassUtil.findRawSuperTypes(mixInCls, targetClass, true);
for (Class mixin : parents) {
for (Method m : ClassUtil.getDeclaredMethods(mixin)) {
if (!_isIncludableMemberMethod(m)) {
continue;
}
AnnotatedMethod am = methods.find(m);
/* Do we already have a method to augment (from sub-class
* that will mask this mixIn)? If so, add if visible
* without masking (no such annotation)
*/
if (am != null) {
_addMixUnders(m, am);
/* Otherwise will have precedence, but must wait
* until we find the real method (mixIn methods are
* just placeholder, can't be called)
*/
} else {
// Well, or, as per [databind#515], multi-level merge within mixins...
am = mixIns.find(m);
if (am != null) {
_addMixUnders(m, am);
} else {
// 03-Nov-2015, tatu: Mix-in method never called, should not need
// to resolve generic types, so this class is fine as context
mixIns.add(_constructMethod(m, this));
}
}
}
}
}
/*
/**********************************************************
/* Helper methods for populating field information
/**********************************************************
*/
protected Map _findFields(JavaType type,
TypeResolutionContext typeContext, Map fields)
{
/* First, a quick test: we only care for regular classes (not
* interfaces, primitive types etc), except for Object.class.
* A simple check to rule out other cases is to see if there
* is a super class or not.
*/
JavaType parent = type.getSuperClass();
if (parent != null) {
final Class cls = type.getRawClass();
// Let's add super-class' fields first, then ours.
/* 21-Feb-2010, tatu: Need to handle masking: as per [JACKSON-226]
* we otherwise get into trouble...
*/
fields = _findFields(parent,
new TypeResolutionContext.Basic(_typeFactory, parent.getBindings()),
fields);
for (Field f : ClassUtil.getDeclaredFields(cls)) {
// static fields not included (transients are at this point, filtered out later)
if (!_isIncludableField(f)) {
continue;
}
/* Ok now: we can (and need) not filter out ignorable fields
* at this point; partly because mix-ins haven't been
* added, and partly because logic can be done when
* determining get/settability of the field.
*/
if (fields == null) {
fields = new LinkedHashMap();
}
fields.put(f.getName(), _constructField(f, typeContext));
}
// And then... any mix-in overrides?
if (_mixInResolver != null) {
Class mixin = _mixInResolver.findMixInClassFor(cls);
if (mixin != null) {
_addFieldMixIns(mixin, cls, fields);
}
}
}
return fields;
}
/**
* 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 mixInCls, Class targetClass,
Map fields)
{
List> parents = ClassUtil.findSuperClasses(mixInCls, targetClass, true);
for (Class mixin : parents) {
for (Field mixinField : ClassUtil.getDeclaredFields(mixin)) {
// 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) {
_addOrOverrideAnnotations(maskedField, mixinField.getDeclaredAnnotations());
}
}
}
}
/*
/**********************************************************
/* Helper methods, constructing value types
/**********************************************************
*/
protected AnnotatedMethod _constructMethod(Method m, TypeResolutionContext typeContext)
{
/* note: parameter annotations not used for regular (getter, setter)
* methods; only for creator methods (static factory methods)
* -- at least not yet!
*/
if (_annotationIntrospector == null) { // when annotation processing is disabled
return new AnnotatedMethod(typeContext, m, _emptyAnnotationMap(), null);
}
return new AnnotatedMethod(typeContext, m, _collectRelevantAnnotations(m.getDeclaredAnnotations()), null);
}
protected AnnotatedConstructor _constructDefaultConstructor(ClassUtil.Ctor ctor,
TypeResolutionContext typeContext)
{
if (_annotationIntrospector == null) { // when annotation processing is disabled
return new AnnotatedConstructor(typeContext, ctor.getConstructor(), _emptyAnnotationMap(), NO_ANNOTATION_MAPS);
}
return new AnnotatedConstructor(typeContext, ctor.getConstructor(),
_collectRelevantAnnotations(ctor.getDeclaredAnnotations()), NO_ANNOTATION_MAPS);
}
protected AnnotatedConstructor _constructNonDefaultConstructor(ClassUtil.Ctor ctor,
TypeResolutionContext typeContext)
{
final int paramCount = ctor.getParamCount();
if (_annotationIntrospector == null) { // when annotation processing is disabled
return new AnnotatedConstructor(typeContext, ctor.getConstructor(),
_emptyAnnotationMap(), _emptyAnnotationMaps(paramCount));
}
/* [JACKSON-701]: Looks like JDK has discrepancy, whereas annotations for implicit 'this'
* (for non-static inner classes) are NOT included, but type is? Strange, sounds like
* a bug. Alas, we can't really fix that...
*/
if (paramCount == 0) { // no-arg default constructors, can simplify slightly
return new AnnotatedConstructor(typeContext, ctor.getConstructor(),
_collectRelevantAnnotations(ctor.getDeclaredAnnotations()), NO_ANNOTATION_MAPS);
}
// Also: [JACKSON-757] (enum value constructors)
AnnotationMap[] resolvedAnnotations;
Annotation[][] paramAnns = ctor.getParameterAnnotations();
if (paramCount != paramAnns.length) {
// Limits of the work-around (to avoid hiding real errors):
// first, only applicable for member classes and then either:
resolvedAnnotations = null;
Class dc = ctor.getDeclaringClass();
// (a) is enum, which have two extra hidden params (name, index)
if (dc.isEnum() && (paramCount == paramAnns.length + 2)) {
Annotation[][] old = paramAnns;
paramAnns = new Annotation[old.length+2][];
System.arraycopy(old, 0, paramAnns, 2, old.length);
resolvedAnnotations = _collectRelevantAnnotations(paramAnns);
} else if (dc.isMemberClass()) {
// (b) non-static inner classes, get implicit 'this' for parameter, not annotation
if (paramCount == (paramAnns.length + 1)) {
// hack attack: prepend a null entry to make things match
Annotation[][] old = paramAnns;
paramAnns = new Annotation[old.length+1][];
System.arraycopy(old, 0, paramAnns, 1, old.length);
resolvedAnnotations = _collectRelevantAnnotations(paramAnns);
}
}
if (resolvedAnnotations == null) {
throw new IllegalStateException("Internal error: constructor for "+ctor.getDeclaringClass().getName()
+" has mismatch: "+paramCount+" parameters; "+paramAnns.length+" sets of annotations");
}
} else {
resolvedAnnotations = _collectRelevantAnnotations(paramAnns);
}
return new AnnotatedConstructor(typeContext, ctor.getConstructor(),
_collectRelevantAnnotations(ctor.getDeclaredAnnotations()), resolvedAnnotations);
}
protected AnnotatedMethod _constructCreatorMethod(Method m, TypeResolutionContext typeContext)
{
final int paramCount = m.getParameterTypes().length;
if (_annotationIntrospector == null) { // when annotation processing is disabled
return new AnnotatedMethod(typeContext, m, _emptyAnnotationMap(), _emptyAnnotationMaps(paramCount));
}
if (paramCount == 0) { // common enough we can slightly optimize
return new AnnotatedMethod(typeContext, m, _collectRelevantAnnotations(m.getDeclaredAnnotations()),
NO_ANNOTATION_MAPS);
}
return new AnnotatedMethod(typeContext, m, _collectRelevantAnnotations(m.getDeclaredAnnotations()),
_collectRelevantAnnotations(m.getParameterAnnotations()));
}
protected AnnotatedField _constructField(Field f, TypeResolutionContext typeContext)
{
if (_annotationIntrospector == null) { // when annotation processing is disabled
return new AnnotatedField(typeContext, f, _emptyAnnotationMap());
}
return new AnnotatedField(typeContext, f, _collectRelevantAnnotations(f.getDeclaredAnnotations()));
}
private AnnotationMap _emptyAnnotationMap() {
return new AnnotationMap();
}
private AnnotationMap[] _emptyAnnotationMaps(int count) {
if (count == 0) {
return NO_ANNOTATION_MAPS;
}
AnnotationMap[] maps = new AnnotationMap[count];
for (int i = 0; i < count; ++i) {
maps[i] = _emptyAnnotationMap();
}
return maps;
}
/*
/**********************************************************
/* Helper methods, inclusion filtering
/**********************************************************
*/
protected boolean _isIncludableMemberMethod(Method m)
{
if (Modifier.isStatic(m.getModifiers())) {
return false;
}
/* 07-Apr-2009, tatu: Looks like generics can introduce hidden
* bridge and/or synthetic methods. I don't think we want to
* consider those...
*/
if (m.isSynthetic() || m.isBridge()) {
return false;
}
// also, for now we have no use for methods with 2 or more arguments:
int pcount = m.getParameterTypes().length;
return (pcount <= 2);
}
private boolean _isIncludableField(Field f)
{
// Most likely synthetic fields, if any, are to be skipped similar to methods
if (f.isSynthetic()) {
return false;
}
// Static fields are never included. Transient are (since 2.6), for
// purpose of propagating removal
int mods = f.getModifiers();
if (Modifier.isStatic(mods)) {
return false;
}
return true;
}
// for [databind#1005]: do not use or expose synthetic constructors
private boolean _isIncludableConstructor(Constructor c)
{
return !c.isSynthetic();
}
/*
/**********************************************************
/* Helper methods, attaching annotations
/**********************************************************
*/
protected AnnotationMap[] _collectRelevantAnnotations(Annotation[][] anns)
{
int len = anns.length;
AnnotationMap[] result = new AnnotationMap[len];
for (int i = 0; i < len; ++i) {
result[i] = _collectRelevantAnnotations(anns[i]);
}
return result;
}
protected AnnotationMap _collectRelevantAnnotations(Annotation[] anns)
{
return _addAnnotationsIfNotPresent(new AnnotationMap(), anns);
}
/* Helper method used to add all applicable annotations from given set.
* Takes into account possible "annotation bundles" (meta-annotations to
* include instead of main-level annotation)
*/
private AnnotationMap _addAnnotationsIfNotPresent(AnnotationMap result, Annotation[] anns)
{
if (anns != null) {
List fromBundles = null;
for (Annotation ann : anns) { // first: direct annotations
// note: we will NOT filter out non-Jackson anns any more
boolean wasNotPresent = result.addIfNotPresent(ann);
if (wasNotPresent && _isAnnotationBundle(ann)) {
fromBundles = _addFromBundle(ann, fromBundles);
}
}
if (fromBundles != null) { // and secondarily handle bundles, if any found: precedence important
_addAnnotationsIfNotPresent(result, fromBundles.toArray(new Annotation[fromBundles.size()]));
}
}
return result;
}
private List _addFromBundle(Annotation bundle, List result)
{
for (Annotation a : ClassUtil.findClassAnnotations(bundle.annotationType())) {
// minor optimization: by-pass 2 common JDK meta-annotations
if ((a instanceof Target) || (a instanceof Retention)) {
continue;
}
if (result == null) {
result = new ArrayList();
}
result.add(a);
}
return result;
}
private void _addAnnotationsIfNotPresent(AnnotatedMember target, Annotation[] anns)
{
if (anns != null) {
List fromBundles = null;
for (Annotation ann : anns) { // first: direct annotations
boolean wasNotPresent = target.addIfNotPresent(ann);
if (wasNotPresent && _isAnnotationBundle(ann)) {
fromBundles = _addFromBundle(ann, fromBundles);
}
}
if (fromBundles != null) { // and secondarily handle bundles, if any found: precedence important
_addAnnotationsIfNotPresent(target, fromBundles.toArray(new Annotation[fromBundles.size()]));
}
}
}
private void _addOrOverrideAnnotations(AnnotatedMember target, Annotation[] anns)
{
if (anns != null) {
List fromBundles = null;
for (Annotation ann : anns) { // first: direct annotations
boolean wasModified = target.addOrOverride(ann);
if (wasModified && _isAnnotationBundle(ann)) {
fromBundles = _addFromBundle(ann, fromBundles);
}
}
if (fromBundles != null) { // and then bundles, if any: important for precedence
_addOrOverrideAnnotations(target, fromBundles.toArray(new Annotation[fromBundles.size()]));
}
}
}
/**
* @param addParamAnnotations Whether parameter annotations are to be
* added as well
*/
protected void _addMixOvers(Constructor mixin, AnnotatedConstructor target,
boolean addParamAnnotations)
{
_addOrOverrideAnnotations(target, mixin.getDeclaredAnnotations());
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);
}
}
}
}
/**
* @param addParamAnnotations Whether parameter annotations are to be
* added as well
*/
protected void _addMixOvers(Method mixin, AnnotatedMethod target,
boolean addParamAnnotations)
{
_addOrOverrideAnnotations(target, mixin.getDeclaredAnnotations());
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 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) {
_addAnnotationsIfNotPresent(target, src.getDeclaredAnnotations());
}
private final boolean _isAnnotationBundle(Annotation ann) {
return (_annotationIntrospector != null) && _annotationIntrospector.isAnnotationBundle(ann);
}
/**
* Helper method that gets methods declared in given class; usually a simple thing,
* but sometimes (as per [databind#785]) more complicated, depending on classloader
* setup.
*
* @since 2.4.7
*/
protected Method[] _findClassMethods(Class cls)
{
try {
return ClassUtil.getDeclaredMethods(cls);
} catch (final NoClassDefFoundError ex) {
// One of the methods had a class that was not found in the cls.getClassLoader.
// Maybe the developer was nice and has a different class loader for this context.
final ClassLoader loader = Thread.currentThread().getContextClassLoader();
if (loader == null){
// Nope... this is going to end poorly
throw ex;
}
final Class contextClass;
try {
contextClass = loader.loadClass(cls.getName());
} catch (ClassNotFoundException e) {
// !!! TODO: 08-May-2015, tatu: Chain appropriately once we have JDK 1.7/Java7 as baseline
//ex.addSuppressed(e); Not until Jackson 2.7
throw ex;
}
return contextClass.getDeclaredMethods(); // Cross fingers
}
}
/*
/**********************************************************
/* Other methods
/**********************************************************
*/
@Override
public String toString() {
return "[AnnotedClass "+_class.getName()+"]";
}
@Override
public int hashCode() {
return _class.getName().hashCode();
}
@Override
public boolean equals(Object o) {
if (o == this) return true;
if (o == null || o.getClass() != getClass()) return false;
return ((AnnotatedClass) o)._class == _class;
}
}