spring OnBeanCondition 源码
springboot OnBeanCondition 代码
文件路径：/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/condition/OnBeanCondition.java
/*
* Copyright 2012-2022 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.boot.autoconfigure.condition;
import java.lang.annotation.Annotation;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.Set;
import org.springframework.aop.scope.ScopedProxyUtils;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.beans.factory.HierarchicalBeanFactory;
import org.springframework.beans.factory.ListableBeanFactory;
import org.springframework.beans.factory.config.BeanDefinition;
import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
import org.springframework.boot.autoconfigure.AutoConfigurationMetadata;
import org.springframework.boot.autoconfigure.condition.ConditionMessage.Style;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Condition;
import org.springframework.context.annotation.ConditionContext;
import org.springframework.context.annotation.ConfigurationCondition;
import org.springframework.core.Ordered;
import org.springframework.core.ResolvableType;
import org.springframework.core.annotation.MergedAnnotation;
import org.springframework.core.annotation.MergedAnnotation.Adapt;
import org.springframework.core.annotation.MergedAnnotationCollectors;
import org.springframework.core.annotation.MergedAnnotationPredicates;
import org.springframework.core.annotation.MergedAnnotations;
import org.springframework.core.annotation.Order;
import org.springframework.core.type.AnnotatedTypeMetadata;
import org.springframework.core.type.MethodMetadata;
import org.springframework.util.Assert;
import org.springframework.util.ClassUtils;
import org.springframework.util.CollectionUtils;
import org.springframework.util.MultiValueMap;
import org.springframework.util.ObjectUtils;
import org.springframework.util.ReflectionUtils;
import org.springframework.util.StringUtils;
/**
* {@link Condition} that checks for the presence or absence of specific beans.
*
* @author Phillip Webb
* @author Dave Syer
* @author Jakub Kubrynski
* @author Stephane Nicoll
* @author Andy Wilkinson
* @see ConditionalOnBean
* @see ConditionalOnMissingBean
* @see ConditionalOnSingleCandidate
*/
@Order(Ordered.LOWEST_PRECEDENCE)
class OnBeanCondition extends FilteringSpringBootCondition implements ConfigurationCondition {
@Override
public ConfigurationPhase getConfigurationPhase() {
return ConfigurationPhase.REGISTER_BEAN;
}
@Override
protected final ConditionOutcome[] getOutcomes(String[] autoConfigurationClasses,
AutoConfigurationMetadata autoConfigurationMetadata) {
ConditionOutcome[] outcomes = new ConditionOutcome[autoConfigurationClasses.length];
for (int i = 0; i < outcomes.length; i++) {
String autoConfigurationClass = autoConfigurationClasses[i];
if (autoConfigurationClass != null) {
Set<String> onBeanTypes = autoConfigurationMetadata.getSet(autoConfigurationClass, "ConditionalOnBean");
outcomes[i] = getOutcome(onBeanTypes, ConditionalOnBean.class);
if (outcomes[i] == null) {
Set<String> onSingleCandidateTypes = autoConfigurationMetadata.getSet(autoConfigurationClass,
"ConditionalOnSingleCandidate");
outcomes[i] = getOutcome(onSingleCandidateTypes, ConditionalOnSingleCandidate.class);
}
}
}
return outcomes;
}
private ConditionOutcome getOutcome(Set<String> requiredBeanTypes, Class<? extends Annotation> annotation) {
List<String> missing = filter(requiredBeanTypes, ClassNameFilter.MISSING, getBeanClassLoader());
if (!missing.isEmpty()) {
ConditionMessage message = ConditionMessage.forCondition(annotation)
.didNotFind("required type", "required types").items(Style.QUOTE, missing);
return ConditionOutcome.noMatch(message);
}
return null;
}
@Override
public ConditionOutcome getMatchOutcome(ConditionContext context, AnnotatedTypeMetadata metadata) {
ConditionMessage matchMessage = ConditionMessage.empty();
MergedAnnotations annotations = metadata.getAnnotations();
if (annotations.isPresent(ConditionalOnBean.class)) {
Spec<ConditionalOnBean> spec = new Spec<>(context, metadata, annotations, ConditionalOnBean.class);
MatchResult matchResult = getMatchingBeans(context, spec);
if (!matchResult.isAllMatched()) {
String reason = createOnBeanNoMatchReason(matchResult);
return ConditionOutcome.noMatch(spec.message().because(reason));
}
matchMessage = spec.message(matchMessage).found("bean", "beans").items(Style.QUOTE,
matchResult.getNamesOfAllMatches());
}
if (metadata.isAnnotated(ConditionalOnSingleCandidate.class.getName())) {
Spec<ConditionalOnSingleCandidate> spec = new SingleCandidateSpec(context, metadata, annotations);
MatchResult matchResult = getMatchingBeans(context, spec);
if (!matchResult.isAllMatched()) {
return ConditionOutcome.noMatch(spec.message().didNotFind("any beans").atAll());
}
Set<String> allBeans = matchResult.getNamesOfAllMatches();
if (allBeans.size() == 1) {
matchMessage = spec.message(matchMessage).found("a single bean").items(Style.QUOTE, allBeans);
}
else {
List<String> primaryBeans = getPrimaryBeans(context.getBeanFactory(), allBeans,
spec.getStrategy() == SearchStrategy.ALL);
if (primaryBeans.isEmpty()) {
return ConditionOutcome.noMatch(
spec.message().didNotFind("a primary bean from beans").items(Style.QUOTE, allBeans));
}
if (primaryBeans.size() > 1) {
return ConditionOutcome
.noMatch(spec.message().found("multiple primary beans").items(Style.QUOTE, primaryBeans));
}
matchMessage = spec.message(matchMessage)
.found("a single primary bean '" + primaryBeans.get(0) + "' from beans")
.items(Style.QUOTE, allBeans);
}
}
if (metadata.isAnnotated(ConditionalOnMissingBean.class.getName())) {
Spec<ConditionalOnMissingBean> spec = new Spec<>(context, metadata, annotations,
ConditionalOnMissingBean.class);
MatchResult matchResult = getMatchingBeans(context, spec);
if (matchResult.isAnyMatched()) {
String reason = createOnMissingBeanNoMatchReason(matchResult);
return ConditionOutcome.noMatch(spec.message().because(reason));
}
matchMessage = spec.message(matchMessage).didNotFind("any beans").atAll();
}
return ConditionOutcome.match(matchMessage);
}
protected final MatchResult getMatchingBeans(ConditionContext context, Spec<?> spec) {
ClassLoader classLoader = context.getClassLoader();
ConfigurableListableBeanFactory beanFactory = context.getBeanFactory();
boolean considerHierarchy = spec.getStrategy() != SearchStrategy.CURRENT;
Set<Class<?>> parameterizedContainers = spec.getParameterizedContainers();
if (spec.getStrategy() == SearchStrategy.ANCESTORS) {
BeanFactory parent = beanFactory.getParentBeanFactory();
Assert.isInstanceOf(ConfigurableListableBeanFactory.class, parent,
"Unable to use SearchStrategy.ANCESTORS");
beanFactory = (ConfigurableListableBeanFactory) parent;
}
MatchResult result = new MatchResult();
Set<String> beansIgnoredByType = getNamesOfBeansIgnoredByType(classLoader, beanFactory, considerHierarchy,
spec.getIgnoredTypes(), parameterizedContainers);
for (String type : spec.getTypes()) {
Collection<String> typeMatches = getBeanNamesForType(classLoader, considerHierarchy, beanFactory, type,
parameterizedContainers);
Iterator<String> iterator = typeMatches.iterator();
while (iterator.hasNext()) {
String match = iterator.next();
if (beansIgnoredByType.contains(match) || ScopedProxyUtils.isScopedTarget(match)) {
iterator.remove();
}
}
if (typeMatches.isEmpty()) {
result.recordUnmatchedType(type);
}
else {
result.recordMatchedType(type, typeMatches);
}
}
for (String annotation : spec.getAnnotations()) {
Set<String> annotationMatches = getBeanNamesForAnnotation(classLoader, beanFactory, annotation,
considerHierarchy);
annotationMatches.removeAll(beansIgnoredByType);
if (annotationMatches.isEmpty()) {
result.recordUnmatchedAnnotation(annotation);
}
else {
result.recordMatchedAnnotation(annotation, annotationMatches);
}
}
for (String beanName : spec.getNames()) {
if (!beansIgnoredByType.contains(beanName) && containsBean(beanFactory, beanName, considerHierarchy)) {
result.recordMatchedName(beanName);
}
else {
result.recordUnmatchedName(beanName);
}
}
return result;
}
private Set<String> getNamesOfBeansIgnoredByType(ClassLoader classLoader, ListableBeanFactory beanFactory,
boolean considerHierarchy, Set<String> ignoredTypes, Set<Class<?>> parameterizedContainers) {
Set<String> result = null;
for (String ignoredType : ignoredTypes) {
Collection<String> ignoredNames = getBeanNamesForType(classLoader, considerHierarchy, beanFactory,
ignoredType, parameterizedContainers);
result = addAll(result, ignoredNames);
}
return (result != null) ? result : Collections.emptySet();
}
private Set<String> getBeanNamesForType(ClassLoader classLoader, boolean considerHierarchy,
ListableBeanFactory beanFactory, String type, Set<Class<?>> parameterizedContainers) throws LinkageError {
try {
return getBeanNamesForType(beanFactory, considerHierarchy, resolve(type, classLoader),
parameterizedContainers);
}
catch (ClassNotFoundException | NoClassDefFoundError ex) {
return Collections.emptySet();
}
}
private Set<String> getBeanNamesForType(ListableBeanFactory beanFactory, boolean considerHierarchy, Class<?> type,
Set<Class<?>> parameterizedContainers) {
Set<String> result = collectBeanNamesForType(beanFactory, considerHierarchy, type, parameterizedContainers,
null);
return (result != null) ? result : Collections.emptySet();
}
private Set<String> collectBeanNamesForType(ListableBeanFactory beanFactory, boolean considerHierarchy,
Class<?> type, Set<Class<?>> parameterizedContainers, Set<String> result) {
result = addAll(result, beanFactory.getBeanNamesForType(type, true, false));
for (Class<?> container : parameterizedContainers) {
ResolvableType generic = ResolvableType.forClassWithGenerics(container, type);
result = addAll(result, beanFactory.getBeanNamesForType(generic, true, false));
}
if (considerHierarchy && beanFactory instanceof HierarchicalBeanFactory hierarchicalBeanFactory) {
BeanFactory parent = hierarchicalBeanFactory.getParentBeanFactory();
if (parent instanceof ListableBeanFactory listableBeanFactory) {
result = collectBeanNamesForType(listableBeanFactory, considerHierarchy, type, parameterizedContainers,
result);
}
}
return result;
}
private Set<String> getBeanNamesForAnnotation(ClassLoader classLoader, ConfigurableListableBeanFactory beanFactory,
String type, boolean considerHierarchy) throws LinkageError {
Set<String> result = null;
try {
result = collectBeanNamesForAnnotation(beanFactory, resolveAnnotationType(classLoader, type),
considerHierarchy, result);
}
catch (ClassNotFoundException ex) {
// Continue
}
return (result != null) ? result : Collections.emptySet();
}
@SuppressWarnings("unchecked")
private Class<? extends Annotation> resolveAnnotationType(ClassLoader classLoader, String type)
throws ClassNotFoundException {
return (Class<? extends Annotation>) resolve(type, classLoader);
}
private Set<String> collectBeanNamesForAnnotation(ListableBeanFactory beanFactory,
Class<? extends Annotation> annotationType, boolean considerHierarchy, Set<String> result) {
result = addAll(result, beanFactory.getBeanNamesForAnnotation(annotationType));
if (considerHierarchy) {
BeanFactory parent = ((HierarchicalBeanFactory) beanFactory).getParentBeanFactory();
if (parent instanceof ListableBeanFactory listableBeanFactory) {
result = collectBeanNamesForAnnotation(listableBeanFactory, annotationType, considerHierarchy, result);
}
}
return result;
}
private boolean containsBean(ConfigurableListableBeanFactory beanFactory, String beanName,
boolean considerHierarchy) {
if (considerHierarchy) {
return beanFactory.containsBean(beanName);
}
return beanFactory.containsLocalBean(beanName);
}
private String createOnBeanNoMatchReason(MatchResult matchResult) {
StringBuilder reason = new StringBuilder();
appendMessageForNoMatches(reason, matchResult.getUnmatchedAnnotations(), "annotated with");
appendMessageForNoMatches(reason, matchResult.getUnmatchedTypes(), "of type");
appendMessageForNoMatches(reason, matchResult.getUnmatchedNames(), "named");
return reason.toString();
}
private void appendMessageForNoMatches(StringBuilder reason, Collection<String> unmatched, String description) {
if (!unmatched.isEmpty()) {
if (reason.length() > 0) {
reason.append(" and ");
}
reason.append("did not find any beans ");
reason.append(description);
reason.append(" ");
reason.append(StringUtils.collectionToDelimitedString(unmatched, ", "));
}
}
private String createOnMissingBeanNoMatchReason(MatchResult matchResult) {
StringBuilder reason = new StringBuilder();
appendMessageForMatches(reason, matchResult.getMatchedAnnotations(), "annotated with");
appendMessageForMatches(reason, matchResult.getMatchedTypes(), "of type");
if (!matchResult.getMatchedNames().isEmpty()) {
if (reason.length() > 0) {
reason.append(" and ");
}
reason.append("found beans named ");
reason.append(StringUtils.collectionToDelimitedString(matchResult.getMatchedNames(), ", "));
}
return reason.toString();
}
private void appendMessageForMatches(StringBuilder reason, Map<String, Collection<String>> matches,
String description) {
if (!matches.isEmpty()) {
matches.forEach((key, value) -> {
if (reason.length() > 0) {
reason.append(" and ");
}
reason.append("found beans ");
reason.append(description);
reason.append(" '");
reason.append(key);
reason.append("' ");
reason.append(StringUtils.collectionToDelimitedString(value, ", "));
});
}
}
private List<String> getPrimaryBeans(ConfigurableListableBeanFactory beanFactory, Set<String> beanNames,
boolean considerHierarchy) {
List<String> primaryBeans = new ArrayList<>();
for (String beanName : beanNames) {
BeanDefinition beanDefinition = findBeanDefinition(beanFactory, beanName, considerHierarchy);
if (beanDefinition != null && beanDefinition.isPrimary()) {
primaryBeans.add(beanName);
}
}
return primaryBeans;
}
private BeanDefinition findBeanDefinition(ConfigurableListableBeanFactory beanFactory, String beanName,
boolean considerHierarchy) {
if (beanFactory.containsBeanDefinition(beanName)) {
return beanFactory.getBeanDefinition(beanName);
}
if (considerHierarchy
&& beanFactory.getParentBeanFactory() instanceof ConfigurableListableBeanFactory listableBeanFactory) {
return findBeanDefinition(listableBeanFactory, beanName, considerHierarchy);
}
return null;
}
private static Set<String> addAll(Set<String> result, Collection<String> additional) {
if (CollectionUtils.isEmpty(additional)) {
return result;
}
result = (result != null) ? result : new LinkedHashSet<>();
result.addAll(additional);
return result;
}
private static Set<String> addAll(Set<String> result, String[] additional) {
if (ObjectUtils.isEmpty(additional)) {
return result;
}
result = (result != null) ? result : new LinkedHashSet<>();
Collections.addAll(result, additional);
return result;
}
/**
* A search specification extracted from the underlying annotation.
*/
private static class Spec<A extends Annotation> {
private final ClassLoader classLoader;
private final Class<? extends Annotation> annotationType;
private final Set<String> names;
private final Set<String> types;
private final Set<String> annotations;
private final Set<String> ignoredTypes;
private final Set<Class<?>> parameterizedContainers;
private final SearchStrategy strategy;
Spec(ConditionContext context, AnnotatedTypeMetadata metadata, MergedAnnotations annotations,
Class<A> annotationType) {
MultiValueMap<String, Object> attributes = annotations.stream(annotationType)
.filter(MergedAnnotationPredicates.unique(MergedAnnotation::getMetaTypes))
.collect(MergedAnnotationCollectors.toMultiValueMap(Adapt.CLASS_TO_STRING));
MergedAnnotation<A> annotation = annotations.get(annotationType);
this.classLoader = context.getClassLoader();
this.annotationType = annotationType;
this.names = extract(attributes, "name");
this.annotations = extract(attributes, "annotation");
this.ignoredTypes = extract(attributes, "ignored", "ignoredType");
this.parameterizedContainers = resolveWhenPossible(extract(attributes, "parameterizedContainer"));
this.strategy = annotation.getValue("search", SearchStrategy.class).orElse(null);
Set<String> types = extractTypes(attributes);
BeanTypeDeductionException deductionException = null;
if (types.isEmpty() && this.names.isEmpty()) {
try {
types = deducedBeanType(context, metadata);
}
catch (BeanTypeDeductionException ex) {
deductionException = ex;
}
}
this.types = types;
validate(deductionException);
}
protected Set<String> extractTypes(MultiValueMap<String, Object> attributes) {
return extract(attributes, "value", "type");
}
private Set<String> extract(MultiValueMap<String, Object> attributes, String... attributeNames) {
if (attributes.isEmpty()) {
return Collections.emptySet();
}
Set<String> result = new LinkedHashSet<>();
for (String attributeName : attributeNames) {
List<Object> values = attributes.getOrDefault(attributeName, Collections.emptyList());
for (Object value : values) {
if (value instanceof String[] stringArray) {
merge(result, stringArray);
}
else if (value instanceof String string) {
merge(result, string);
}
}
}
return result.isEmpty() ? Collections.emptySet() : result;
}
private void merge(Set<String> result, String... additional) {
Collections.addAll(result, additional);
}
private Set<Class<?>> resolveWhenPossible(Set<String> classNames) {
if (classNames.isEmpty()) {
return Collections.emptySet();
}
Set<Class<?>> resolved = new LinkedHashSet<>(classNames.size());
for (String className : classNames) {
try {
resolved.add(resolve(className, this.classLoader));
}
catch (ClassNotFoundException | NoClassDefFoundError ex) {
}
}
return resolved;
}
protected void validate(BeanTypeDeductionException ex) {
if (!hasAtLeastOneElement(this.types, this.names, this.annotations)) {
String message = getAnnotationName() + " did not specify a bean using type, name or annotation";
if (ex == null) {
throw new IllegalStateException(message);
}
throw new IllegalStateException(message + " and the attempt to deduce the bean's type failed", ex);
}
}
private boolean hasAtLeastOneElement(Set<?>... sets) {
for (Set<?> set : sets) {
if (!set.isEmpty()) {
return true;
}
}
return false;
}
protected final String getAnnotationName() {
return "@" + ClassUtils.getShortName(this.annotationType);
}
private Set<String> deducedBeanType(ConditionContext context, AnnotatedTypeMetadata metadata) {
if (metadata instanceof MethodMetadata && metadata.isAnnotated(Bean.class.getName())) {
return deducedBeanTypeForBeanMethod(context, (MethodMetadata) metadata);
}
return Collections.emptySet();
}
private Set<String> deducedBeanTypeForBeanMethod(ConditionContext context, MethodMetadata metadata) {
try {
Class<?> returnType = getReturnType(context, metadata);
return Collections.singleton(returnType.getName());
}
catch (Throwable ex) {
throw new BeanTypeDeductionException(metadata.getDeclaringClassName(), metadata.getMethodName(), ex);
}
}
private Class<?> getReturnType(ConditionContext context, MethodMetadata metadata)
throws ClassNotFoundException, LinkageError {
// Safe to load at this point since we are in the REGISTER_BEAN phase
ClassLoader classLoader = context.getClassLoader();
Class<?> returnType = resolve(metadata.getReturnTypeName(), classLoader);
if (isParameterizedContainer(returnType)) {
returnType = getReturnTypeGeneric(metadata, classLoader);
}
return returnType;
}
private boolean isParameterizedContainer(Class<?> type) {
for (Class<?> parameterizedContainer : this.parameterizedContainers) {
if (parameterizedContainer.isAssignableFrom(type)) {
return true;
}
}
return false;
}
private Class<?> getReturnTypeGeneric(MethodMetadata metadata, ClassLoader classLoader)
throws ClassNotFoundException, LinkageError {
Class<?> declaringClass = resolve(metadata.getDeclaringClassName(), classLoader);
Method beanMethod = findBeanMethod(declaringClass, metadata.getMethodName());
return ResolvableType.forMethodReturnType(beanMethod).resolveGeneric();
}
private Method findBeanMethod(Class<?> declaringClass, String methodName) {
Method method = ReflectionUtils.findMethod(declaringClass, methodName);
if (isBeanMethod(method)) {
return method;
}
Method[] candidates = ReflectionUtils.getAllDeclaredMethods(declaringClass);
for (Method candidate : candidates) {
if (candidate.getName().equals(methodName) && isBeanMethod(candidate)) {
return candidate;
}
}
throw new IllegalStateException("Unable to find bean method " + methodName);
}
private boolean isBeanMethod(Method method) {
return method != null && MergedAnnotations.from(method, MergedAnnotations.SearchStrategy.TYPE_HIERARCHY)
.isPresent(Bean.class);
}
private SearchStrategy getStrategy() {
return (this.strategy != null) ? this.strategy : SearchStrategy.ALL;
}
Set<String> getNames() {
return this.names;
}
Set<String> getTypes() {
return this.types;
}
Set<String> getAnnotations() {
return this.annotations;
}
Set<String> getIgnoredTypes() {
return this.ignoredTypes;
}
Set<Class<?>> getParameterizedContainers() {
return this.parameterizedContainers;
}
ConditionMessage.Builder message() {
return ConditionMessage.forCondition(this.annotationType, this);
}
ConditionMessage.Builder message(ConditionMessage message) {
return message.andCondition(this.annotationType, this);
}
@Override
public String toString() {
boolean hasNames = !this.names.isEmpty();
boolean hasTypes = !this.types.isEmpty();
boolean hasIgnoredTypes = !this.ignoredTypes.isEmpty();
StringBuilder string = new StringBuilder();
string.append("(");
if (hasNames) {
string.append("names: ");
string.append(StringUtils.collectionToCommaDelimitedString(this.names));
string.append(hasTypes ? " " : "; ");
}
if (hasTypes) {
string.append("types: ");
string.append(StringUtils.collectionToCommaDelimitedString(this.types));
string.append(hasIgnoredTypes ? " " : "; ");
}
if (hasIgnoredTypes) {
string.append("ignored: ");
string.append(StringUtils.collectionToCommaDelimitedString(this.ignoredTypes));
string.append("; ");
}
string.append("SearchStrategy: ");
string.append(this.strategy.toString().toLowerCase(Locale.ENGLISH));
string.append(")");
return string.toString();
}
}
/**
* Specialized {@link Spec specification} for
* {@link ConditionalOnSingleCandidate @ConditionalOnSingleCandidate}.
*/
private static class SingleCandidateSpec extends Spec<ConditionalOnSingleCandidate> {
private static final Collection<String> FILTERED_TYPES = Arrays.asList("", Object.class.getName());
SingleCandidateSpec(ConditionContext context, AnnotatedTypeMetadata metadata, MergedAnnotations annotations) {
super(context, metadata, annotations, ConditionalOnSingleCandidate.class);
}
@Override
protected Set<String> extractTypes(MultiValueMap<String, Object> attributes) {
Set<String> types = super.extractTypes(attributes);
types.removeAll(FILTERED_TYPES);
return types;
}
@Override
protected void validate(BeanTypeDeductionException ex) {
Assert.isTrue(getTypes().size() == 1,
() -> getAnnotationName() + " annotations must specify only one type (got "
+ StringUtils.collectionToCommaDelimitedString(getTypes()) + ")");
}
}
/**
* Results collected during the condition evaluation.
*/
private static final class MatchResult {
private final Map<String, Collection<String>> matchedAnnotations = new HashMap<>();
private final List<String> matchedNames = new ArrayList<>();
private final Map<String, Collection<String>> matchedTypes = new HashMap<>();
private final List<String> unmatchedAnnotations = new ArrayList<>();
private final List<String> unmatchedNames = new ArrayList<>();
private final List<String> unmatchedTypes = new ArrayList<>();
private final Set<String> namesOfAllMatches = new HashSet<>();
private void recordMatchedName(String name) {
this.matchedNames.add(name);
this.namesOfAllMatches.add(name);
}
private void recordUnmatchedName(String name) {
this.unmatchedNames.add(name);
}
private void recordMatchedAnnotation(String annotation, Collection<String> matchingNames) {
this.matchedAnnotations.put(annotation, matchingNames);
this.namesOfAllMatches.addAll(matchingNames);
}
private void recordUnmatchedAnnotation(String annotation) {
this.unmatchedAnnotations.add(annotation);
}
private void recordMatchedType(String type, Collection<String> matchingNames) {
this.matchedTypes.put(type, matchingNames);
this.namesOfAllMatches.addAll(matchingNames);
}
private void recordUnmatchedType(String type) {
this.unmatchedTypes.add(type);
}
boolean isAllMatched() {
return this.unmatchedAnnotations.isEmpty() && this.unmatchedNames.isEmpty()
&& this.unmatchedTypes.isEmpty();
}
boolean isAnyMatched() {
return (!this.matchedAnnotations.isEmpty()) || (!this.matchedNames.isEmpty())
|| (!this.matchedTypes.isEmpty());
}
Map<String, Collection<String>> getMatchedAnnotations() {
return this.matchedAnnotations;
}
List<String> getMatchedNames() {
return this.matchedNames;
}
Map<String, Collection<String>> getMatchedTypes() {
return this.matchedTypes;
}
List<String> getUnmatchedAnnotations() {
return this.unmatchedAnnotations;
}
List<String> getUnmatchedNames() {
return this.unmatchedNames;
}
List<String> getUnmatchedTypes() {
return this.unmatchedTypes;
}
Set<String> getNamesOfAllMatches() {
return this.namesOfAllMatches;
}
}
/**
* Exception thrown when the bean type cannot be deduced.
*/
static final class BeanTypeDeductionException extends RuntimeException {
private BeanTypeDeductionException(String className, String beanMethodName, Throwable cause) {
super("Failed to deduce bean type for " + className + "." + beanMethodName, cause);
}
}
}
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