com.fasterxml.jackson.databind.introspect.AnnotationIntrospectorPair Maven / Gradle / Ivy
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package com.fasterxml.jackson.databind.introspect;
import java.lang.annotation.Annotation;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import com.fasterxml.jackson.annotation.JacksonInject;
import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonFormat;
import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
import com.fasterxml.jackson.annotation.JsonInclude;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.fasterxml.jackson.annotation.JsonSetter;
import com.fasterxml.jackson.core.Version;
import com.fasterxml.jackson.databind.*;
import com.fasterxml.jackson.databind.annotation.JsonPOJOBuilder;
import com.fasterxml.jackson.databind.annotation.JsonSerialize;
import com.fasterxml.jackson.databind.cfg.MapperConfig;
import com.fasterxml.jackson.databind.jsontype.NamedType;
import com.fasterxml.jackson.databind.jsontype.TypeResolverBuilder;
import com.fasterxml.jackson.databind.ser.BeanPropertyWriter;
import com.fasterxml.jackson.databind.util.ClassUtil;
import com.fasterxml.jackson.databind.util.NameTransformer;
/**
* Helper class that allows using 2 introspectors such that one
* introspector acts as the primary one to use; and second one
* as a fallback used if the primary does not provide conclusive
* or useful result for a method.
*
* An obvious consequence of priority is that it is easy to construct
* longer chains of introspectors by linking multiple pairs.
* Currently most likely combination is that of using the default
* Jackson provider, along with JAXB annotation introspector.
*
* Note: up until 2.0, this class was an inner class of
* {@link AnnotationIntrospector}; moved here for convenience.
*
* @since 2.1
*/
public class AnnotationIntrospectorPair
extends AnnotationIntrospector
implements java.io.Serializable
{
private static final long serialVersionUID = 1L;
protected final AnnotationIntrospector _primary, _secondary;
public AnnotationIntrospectorPair(AnnotationIntrospector p, AnnotationIntrospector s)
{
_primary = p;
_secondary = s;
}
@Override
public Version version() {
return _primary.version();
}
/**
* Helper method for constructing a Pair from two given introspectors (if
* neither is null); or returning non-null introspector if one is null
* (and return just null if both are null)
*/
public static AnnotationIntrospector create(AnnotationIntrospector primary,
AnnotationIntrospector secondary)
{
if (primary == null) {
return secondary;
}
if (secondary == null) {
return primary;
}
return new AnnotationIntrospectorPair(primary, secondary);
}
@Override
public Collection allIntrospectors() {
return allIntrospectors(new ArrayList());
}
@Override
public Collection allIntrospectors(Collection result)
{
_primary.allIntrospectors(result);
_secondary.allIntrospectors(result);
return result;
}
// // // Generic annotation properties, lookup
@Override
public boolean isAnnotationBundle(Annotation ann) {
return _primary.isAnnotationBundle(ann) || _secondary.isAnnotationBundle(ann);
}
/*
/******************************************************
/* General class annotations
/******************************************************
*/
@Override
public PropertyName findRootName(AnnotatedClass ac)
{
PropertyName name1 = _primary.findRootName(ac);
if (name1 == null) {
return _secondary.findRootName(ac);
}
if (name1.hasSimpleName()) {
return name1;
}
// name1 is empty; how about secondary?
PropertyName name2 = _secondary.findRootName(ac);
return (name2 == null) ? name1 : name2;
}
@Override
public JsonIgnoreProperties.Value findPropertyIgnorals(Annotated a)
{
JsonIgnoreProperties.Value v2 = _secondary.findPropertyIgnorals(a);
JsonIgnoreProperties.Value v1 = _primary.findPropertyIgnorals(a);
return (v2 == null) // shouldn't occur but
? v1 : v2.withOverrides(v1);
}
@Override
public Boolean isIgnorableType(AnnotatedClass ac)
{
Boolean result = _primary.isIgnorableType(ac);
if (result == null) {
result = _secondary.isIgnorableType(ac);
}
return result;
}
@Override
public Object findFilterId(Annotated ann)
{
Object id = _primary.findFilterId(ann);
if (id == null) {
id = _secondary.findFilterId(ann);
}
return id;
}
@Override
public Object findNamingStrategy(AnnotatedClass ac)
{
Object str = _primary.findNamingStrategy(ac);
if (str == null) {
str = _secondary.findNamingStrategy(ac);
}
return str;
}
@Override
public String findClassDescription(AnnotatedClass ac) {
String str = _primary.findClassDescription(ac);
if ((str == null) || str.isEmpty()) {
str = _secondary.findClassDescription(ac);
}
return str;
}
@Override
@Deprecated // since 2.6
public String[] findPropertiesToIgnore(Annotated ac) {
String[] result = _primary.findPropertiesToIgnore(ac);
if (result == null) {
result = _secondary.findPropertiesToIgnore(ac);
}
return result;
}
@Override
@Deprecated // since 2.8
public String[] findPropertiesToIgnore(Annotated ac, boolean forSerialization) {
String[] result = _primary.findPropertiesToIgnore(ac, forSerialization);
if (result == null) {
result = _secondary.findPropertiesToIgnore(ac, forSerialization);
}
return result;
}
@Override
@Deprecated // since 2.8
public Boolean findIgnoreUnknownProperties(AnnotatedClass ac)
{
Boolean result = _primary.findIgnoreUnknownProperties(ac);
if (result == null) {
result = _secondary.findIgnoreUnknownProperties(ac);
}
return result;
}
/*
/******************************************************
/* Property auto-detection
/******************************************************
*/
@Override
public VisibilityChecker findAutoDetectVisibility(AnnotatedClass ac,
VisibilityChecker checker)
{
/* Note: to have proper priorities, we must actually call delegatees
* in reverse order:
*/
checker = _secondary.findAutoDetectVisibility(ac, checker);
return _primary.findAutoDetectVisibility(ac, checker);
}
/*
/******************************************************
/* Type handling
/******************************************************
*/
@Override
public TypeResolverBuilder findTypeResolver(MapperConfig config,
AnnotatedClass ac, JavaType baseType)
{
TypeResolverBuilder b = _primary.findTypeResolver(config, ac, baseType);
if (b == null) {
b = _secondary.findTypeResolver(config, ac, baseType);
}
return b;
}
@Override
public TypeResolverBuilder findPropertyTypeResolver(MapperConfig config,
AnnotatedMember am, JavaType baseType)
{
TypeResolverBuilder b = _primary.findPropertyTypeResolver(config, am, baseType);
if (b == null) {
b = _secondary.findPropertyTypeResolver(config, am, baseType);
}
return b;
}
@Override
public TypeResolverBuilder findPropertyContentTypeResolver(MapperConfig config,
AnnotatedMember am, JavaType baseType)
{
TypeResolverBuilder b = _primary.findPropertyContentTypeResolver(config, am, baseType);
if (b == null) {
b = _secondary.findPropertyContentTypeResolver(config, am, baseType);
}
return b;
}
@Override
public List findSubtypes(Annotated a)
{
List types1 = _primary.findSubtypes(a);
List types2 = _secondary.findSubtypes(a);
if (types1 == null || types1.isEmpty()) return types2;
if (types2 == null || types2.isEmpty()) return types1;
ArrayList result = new ArrayList(types1.size() + types2.size());
result.addAll(types1);
result.addAll(types2);
return result;
}
@Override
public String findTypeName(AnnotatedClass ac)
{
String name = _primary.findTypeName(ac);
if (name == null || name.length() == 0) {
name = _secondary.findTypeName(ac);
}
return name;
}
/*
/******************************************************
/* General member (field, method/constructor) annotations
/******************************************************
*/
@Override
public ReferenceProperty findReferenceType(AnnotatedMember member) {
ReferenceProperty r = _primary.findReferenceType(member);
return (r == null) ? _secondary.findReferenceType(member) : r;
}
@Override
public NameTransformer findUnwrappingNameTransformer(AnnotatedMember member) {
NameTransformer r = _primary.findUnwrappingNameTransformer(member);
return (r == null) ? _secondary.findUnwrappingNameTransformer(member) : r;
}
@Override
public JacksonInject.Value findInjectableValue(AnnotatedMember m) {
JacksonInject.Value r = _primary.findInjectableValue(m);
return (r == null) ? _secondary.findInjectableValue(m) : r;
}
@Override
public boolean hasIgnoreMarker(AnnotatedMember m) {
return _primary.hasIgnoreMarker(m) || _secondary.hasIgnoreMarker(m);
}
@Override
public Boolean hasRequiredMarker(AnnotatedMember m) {
Boolean r = _primary.hasRequiredMarker(m);
return (r == null) ? _secondary.hasRequiredMarker(m) : r;
}
@Override
@Deprecated // since 2.9
public Object findInjectableValueId(AnnotatedMember m) {
Object r = _primary.findInjectableValueId(m);
return (r == null) ? _secondary.findInjectableValueId(m) : r;
}
// // // Serialization: general annotations
@Override
public Object findSerializer(Annotated am) {
Object r = _primary.findSerializer(am);
if (_isExplicitClassOrOb(r, JsonSerializer.None.class)) {
return r;
}
return _explicitClassOrOb(_secondary.findSerializer(am),
JsonSerializer.None.class);
}
@Override
public Object findKeySerializer(Annotated a) {
Object r = _primary.findKeySerializer(a);
if (_isExplicitClassOrOb(r, JsonSerializer.None.class)) {
return r;
}
return _explicitClassOrOb(_secondary.findKeySerializer(a),
JsonSerializer.None.class);
}
@Override
public Object findContentSerializer(Annotated a) {
Object r = _primary.findContentSerializer(a);
if (_isExplicitClassOrOb(r, JsonSerializer.None.class)) {
return r;
}
return _explicitClassOrOb(_secondary.findContentSerializer(a),
JsonSerializer.None.class);
}
@Override
public Object findNullSerializer(Annotated a) {
Object r = _primary.findNullSerializer(a);
if (_isExplicitClassOrOb(r, JsonSerializer.None.class)) {
return r;
}
return _explicitClassOrOb(_secondary.findNullSerializer(a),
JsonSerializer.None.class);
}
@Deprecated
@Override
public JsonInclude.Include findSerializationInclusion(Annotated a,
JsonInclude.Include defValue)
{
// note: call secondary first, to give lower priority
defValue = _secondary.findSerializationInclusion(a, defValue);
defValue = _primary.findSerializationInclusion(a, defValue);
return defValue;
}
@Deprecated
@Override
public JsonInclude.Include findSerializationInclusionForContent(Annotated a, JsonInclude.Include defValue)
{
// note: call secondary first, to give lower priority
defValue = _secondary.findSerializationInclusionForContent(a, defValue);
defValue = _primary.findSerializationInclusionForContent(a, defValue);
return defValue;
}
@Override
public JsonInclude.Value findPropertyInclusion(Annotated a)
{
JsonInclude.Value v2 = _secondary.findPropertyInclusion(a);
JsonInclude.Value v1 = _primary.findPropertyInclusion(a);
if (v2 == null) { // shouldn't occur but
return v1;
}
return v2.withOverrides(v1);
}
@Override
public JsonSerialize.Typing findSerializationTyping(Annotated a) {
JsonSerialize.Typing r = _primary.findSerializationTyping(a);
return (r == null) ? _secondary.findSerializationTyping(a) : r;
}
@Override
public Object findSerializationConverter(Annotated a) {
Object r = _primary.findSerializationConverter(a);
return (r == null) ? _secondary.findSerializationConverter(a) : r;
}
@Override
public Object findSerializationContentConverter(AnnotatedMember a) {
Object r = _primary.findSerializationContentConverter(a);
return (r == null) ? _secondary.findSerializationContentConverter(a) : r;
}
@Override
public Class[] findViews(Annotated a) {
/* Theoretically this could be trickier, if multiple introspectors
* return non-null entries. For now, though, we'll just consider
* first one to return non-null to win.
*/
Class[] result = _primary.findViews(a);
if (result == null) {
result = _secondary.findViews(a);
}
return result;
}
@Override
public Boolean isTypeId(AnnotatedMember member) {
Boolean b = _primary.isTypeId(member);
return (b == null) ? _secondary.isTypeId(member) : b;
}
@Override
public ObjectIdInfo findObjectIdInfo(Annotated ann) {
ObjectIdInfo r = _primary.findObjectIdInfo(ann);
return (r == null) ? _secondary.findObjectIdInfo(ann) : r;
}
@Override
public ObjectIdInfo findObjectReferenceInfo(Annotated ann, ObjectIdInfo objectIdInfo) {
// to give precedence for primary, must start with secondary:
objectIdInfo = _secondary.findObjectReferenceInfo(ann, objectIdInfo);
objectIdInfo = _primary.findObjectReferenceInfo(ann, objectIdInfo);
return objectIdInfo;
}
@Override
public JsonFormat.Value findFormat(Annotated ann) {
JsonFormat.Value v1 = _primary.findFormat(ann);
JsonFormat.Value v2 = _secondary.findFormat(ann);
if (v2 == null) { // shouldn't occur but just in case
return v1;
}
return v2.withOverrides(v1);
}
@Override
public PropertyName findWrapperName(Annotated ann) {
PropertyName name = _primary.findWrapperName(ann);
if (name == null) {
name = _secondary.findWrapperName(ann);
} else if (name == PropertyName.USE_DEFAULT) {
// does the other introspector have a better idea?
PropertyName name2 = _secondary.findWrapperName(ann);
if (name2 != null) {
name = name2;
}
}
return name;
}
@Override
public String findPropertyDefaultValue(Annotated ann) {
String str = _primary.findPropertyDefaultValue(ann);
return (str == null || str.isEmpty()) ? _secondary.findPropertyDefaultValue(ann) : str;
}
@Override
public String findPropertyDescription(Annotated ann) {
String r = _primary.findPropertyDescription(ann);
return (r == null) ? _secondary.findPropertyDescription(ann) : r;
}
@Override
public Integer findPropertyIndex(Annotated ann) {
Integer r = _primary.findPropertyIndex(ann);
return (r == null) ? _secondary.findPropertyIndex(ann) : r;
}
@Override
public String findImplicitPropertyName(AnnotatedMember ann) {
String r = _primary.findImplicitPropertyName(ann);
return (r == null) ? _secondary.findImplicitPropertyName(ann) : r;
}
@Override
public List findPropertyAliases(Annotated ann) {
List r = _primary.findPropertyAliases(ann);
return (r == null) ? _secondary.findPropertyAliases(ann) : r;
}
@Override
public JsonProperty.Access findPropertyAccess(Annotated ann) {
JsonProperty.Access acc = _primary.findPropertyAccess(ann);
if ((acc != null) && (acc != JsonProperty.Access.AUTO)) {
return acc;
}
acc = _secondary.findPropertyAccess(ann);
if (acc != null) {
return acc;
}
return JsonProperty.Access.AUTO;
}
@Override // since 2.7
public AnnotatedMethod resolveSetterConflict(MapperConfig config,
AnnotatedMethod setter1, AnnotatedMethod setter2)
{
AnnotatedMethod res = _primary.resolveSetterConflict(config, setter1, setter2);
if (res == null) {
res = _secondary.resolveSetterConflict(config, setter1, setter2);
}
return res;
}
// // // Serialization: type refinements
@Override // since 2.7
public JavaType refineSerializationType(MapperConfig config,
Annotated a, JavaType baseType) throws JsonMappingException
{
JavaType t = _secondary.refineSerializationType(config, a, baseType);
return _primary.refineSerializationType(config, a, t);
}
@Override
@Deprecated
public Class findSerializationType(Annotated a) {
Class r = _primary.findSerializationType(a);
return (r == null) ? _secondary.findSerializationType(a) : r;
}
@Override
@Deprecated
public Class findSerializationKeyType(Annotated am, JavaType baseType) {
Class r = _primary.findSerializationKeyType(am, baseType);
return (r == null) ? _secondary.findSerializationKeyType(am, baseType) : r;
}
@Override
@Deprecated
public Class findSerializationContentType(Annotated am, JavaType baseType) {
Class r = _primary.findSerializationContentType(am, baseType);
return (r == null) ? _secondary.findSerializationContentType(am, baseType) : r;
}
// // // Serialization: class annotations
@Override
public String[] findSerializationPropertyOrder(AnnotatedClass ac) {
String[] r = _primary.findSerializationPropertyOrder(ac);
return (r == null) ? _secondary.findSerializationPropertyOrder(ac) : r;
}
@Override
public Boolean findSerializationSortAlphabetically(Annotated ann) {
Boolean r = _primary.findSerializationSortAlphabetically(ann);
return (r == null) ? _secondary.findSerializationSortAlphabetically(ann) : r;
}
@Override
public void findAndAddVirtualProperties(MapperConfig config, AnnotatedClass ac,
List properties) {
// first secondary, then primary, to give proper precedence
_primary.findAndAddVirtualProperties(config, ac, properties);
_secondary.findAndAddVirtualProperties(config, ac, properties);
}
// // // Serialization: property annotations
@Override
public PropertyName findNameForSerialization(Annotated a) {
PropertyName n = _primary.findNameForSerialization(a);
// note: "use default" should not block explicit answer, so:
if (n == null) {
n = _secondary.findNameForSerialization(a);
} else if (n == PropertyName.USE_DEFAULT) {
PropertyName n2 = _secondary.findNameForSerialization(a);
if (n2 != null) {
n = n2;
}
}
return n;
}
@Override
public Boolean hasAsValue(Annotated a) {
Boolean b = _primary.hasAsValue(a);
if (b == null) {
b = _secondary.hasAsValue(a);
}
return b;
}
@Override
public Boolean hasAnyGetter(Annotated a) {
Boolean b = _primary.hasAnyGetter(a);
if (b == null) {
b = _secondary.hasAnyGetter(a);
}
return b;
}
@Override
public String[] findEnumValues(Class enumType, Enum[] enumValues, String[] names) {
// reverse order to give _primary higher precedence
names = _secondary.findEnumValues(enumType, enumValues, names);
names = _primary.findEnumValues(enumType, enumValues, names);
return names;
}
@Override
public Enum findDefaultEnumValue(Class> enumCls) {
Enum en = _primary.findDefaultEnumValue(enumCls);
return (en == null) ? _secondary.findDefaultEnumValue(enumCls) : en;
}
@Override
@Deprecated // since 2.8
public String findEnumValue(Enum value) {
String r = _primary.findEnumValue(value);
return (r == null) ? _secondary.findEnumValue(value) : r;
}
@Override
@Deprecated // since 2.9
public boolean hasAsValueAnnotation(AnnotatedMethod am) {
return _primary.hasAsValueAnnotation(am) || _secondary.hasAsValueAnnotation(am);
}
@Override
@Deprecated // since 2.9
public boolean hasAnyGetterAnnotation(AnnotatedMethod am) {
return _primary.hasAnyGetterAnnotation(am) || _secondary.hasAnyGetterAnnotation(am);
}
// // // Deserialization: general annotations
@Override
public Object findDeserializer(Annotated a) {
Object r = _primary.findDeserializer(a);
if (_isExplicitClassOrOb(r, JsonDeserializer.None.class)) {
return r;
}
return _explicitClassOrOb(_secondary.findDeserializer(a),
JsonDeserializer.None.class);
}
@Override
public Object findKeyDeserializer(Annotated a) {
Object r = _primary.findKeyDeserializer(a);
if (_isExplicitClassOrOb(r, KeyDeserializer.None.class)) {
return r;
}
return _explicitClassOrOb(_secondary.findKeyDeserializer(a),
KeyDeserializer.None.class);
}
@Override
public Object findContentDeserializer(Annotated am) {
Object r = _primary.findContentDeserializer(am);
if (_isExplicitClassOrOb(r, JsonDeserializer.None.class)) {
return r;
}
return _explicitClassOrOb(_secondary.findContentDeserializer(am),
JsonDeserializer.None.class);
}
@Override
public Object findDeserializationConverter(Annotated a) {
Object ob = _primary.findDeserializationConverter(a);
return (ob == null) ? _secondary.findDeserializationConverter(a) : ob;
}
@Override
public Object findDeserializationContentConverter(AnnotatedMember a) {
Object ob = _primary.findDeserializationContentConverter(a);
return (ob == null) ? _secondary.findDeserializationContentConverter(a) : ob;
}
// // // Deserialization: type refinements
// since 2.7
@Override
public JavaType refineDeserializationType(MapperConfig config,
Annotated a, JavaType baseType) throws JsonMappingException
{
JavaType t = _secondary.refineDeserializationType(config, a, baseType);
return _primary.refineDeserializationType(config, a, t);
}
@Override
@Deprecated
public Class findDeserializationType(Annotated am, JavaType baseType) {
Class r = _primary.findDeserializationType(am, baseType);
return (r != null) ? r : _secondary.findDeserializationType(am, baseType);
}
@Override
@Deprecated
public Class findDeserializationKeyType(Annotated am, JavaType baseKeyType) {
Class result = _primary.findDeserializationKeyType(am, baseKeyType);
return (result == null) ? _secondary.findDeserializationKeyType(am, baseKeyType) : result;
}
@Override
@Deprecated
public Class findDeserializationContentType(Annotated am, JavaType baseContentType) {
Class result = _primary.findDeserializationContentType(am, baseContentType);
return (result == null) ? _secondary.findDeserializationContentType(am, baseContentType) : result;
}
// // // Deserialization: class annotations
@Override
public Object findValueInstantiator(AnnotatedClass ac) {
Object result = _primary.findValueInstantiator(ac);
return (result == null) ? _secondary.findValueInstantiator(ac) : result;
}
@Override
public Class findPOJOBuilder(AnnotatedClass ac) {
Class result = _primary.findPOJOBuilder(ac);
return (result == null) ? _secondary.findPOJOBuilder(ac) : result;
}
@Override
public JsonPOJOBuilder.Value findPOJOBuilderConfig(AnnotatedClass ac) {
JsonPOJOBuilder.Value result = _primary.findPOJOBuilderConfig(ac);
return (result == null) ? _secondary.findPOJOBuilderConfig(ac) : result;
}
// // // Deserialization: method annotations
@Override
public PropertyName findNameForDeserialization(Annotated a)
{
// note: "use default" should not block explicit answer, so:
PropertyName n = _primary.findNameForDeserialization(a);
if (n == null) {
n = _secondary.findNameForDeserialization(a);
} else if (n == PropertyName.USE_DEFAULT) {
PropertyName n2 = _secondary.findNameForDeserialization(a);
if (n2 != null) {
n = n2;
}
}
return n;
}
@Override
public Boolean hasAnySetter(Annotated a) {
Boolean b = _primary.hasAnySetter(a);
if (b == null) {
b = _secondary.hasAnySetter(a);
}
return b;
}
@Override
public JsonSetter.Value findSetterInfo(Annotated a) {
JsonSetter.Value v2 = _secondary.findSetterInfo(a);
JsonSetter.Value v1 = _primary.findSetterInfo(a);
return (v2 == null) // shouldn't occur but
? v1 : v2.withOverrides(v1);
}
@Override // since 2.9
public Boolean findMergeInfo(Annotated a) {
Boolean b = _primary.findMergeInfo(a);
if (b == null) {
b = _secondary.findMergeInfo(a);
}
return b;
}
@Override
@Deprecated // since 2.9
public boolean hasCreatorAnnotation(Annotated a) {
return _primary.hasCreatorAnnotation(a) || _secondary.hasCreatorAnnotation(a);
}
@Override
@Deprecated // since 2.9
public JsonCreator.Mode findCreatorBinding(Annotated a) {
JsonCreator.Mode mode = _primary.findCreatorBinding(a);
if (mode != null) {
return mode;
}
return _secondary.findCreatorBinding(a);
}
@Override
public JsonCreator.Mode findCreatorAnnotation(MapperConfig config, Annotated a) {
JsonCreator.Mode mode = _primary.findCreatorAnnotation(config, a);
return (mode == null) ? _secondary.findCreatorAnnotation(config, a) : mode;
}
@Override
@Deprecated // since 2.9
public boolean hasAnySetterAnnotation(AnnotatedMethod am) {
return _primary.hasAnySetterAnnotation(am) || _secondary.hasAnySetterAnnotation(am);
}
protected boolean _isExplicitClassOrOb(Object maybeCls, Class implicit) {
if ((maybeCls == null) || (maybeCls == implicit)) {
return false;
}
if (maybeCls instanceof Class) {
return !ClassUtil.isBogusClass((Class) maybeCls);
}
return true;
}
// @since 2.9
protected Object _explicitClassOrOb(Object maybeCls, Class implicit) {
if ((maybeCls == null) || (maybeCls == implicit)) {
return null;
}
if ((maybeCls instanceof Class) && ClassUtil.isBogusClass((Class) maybeCls)) {
return null;
}
return maybeCls;
}
}