org.springframework.biz.context.annotation.WebScopeMetadataResolver Maven / Gradle / Ivy
/*
* Copyright (c) 2018 (https://github.com/vindell).
*
* 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
*
* http://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.biz.context.annotation;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
import org.springframework.beans.factory.annotation.AnnotatedBeanDefinition;
import org.springframework.beans.factory.config.BeanDefinition;
import org.springframework.context.annotation.ScopeMetadata;
import org.springframework.context.annotation.ScopeMetadataResolver;
public class WebScopeMetadataResolver implements ScopeMetadataResolver {
private final Map scopeMap = new HashMap();
public WebScopeMetadataResolver() {
registerScope("javax.inject.Singleton", BeanDefinition.SCOPE_SINGLETON);
}
/**
* Register an extended JSR-330 scope annotation, mapping it onto a
* specific Spring scope by name.
* @param annotationType the JSR-330 annotation type as a Class
* @param scopeName the Spring scope name
*/
public final void registerScope(Class annotationType, String scopeName) {
this.scopeMap.put(annotationType.getName(), scopeName);
}
/**
* Register an extended JSR-330 scope annotation, mapping it onto a
* specific Spring scope by name.
* @param annotationType the JSR-330 annotation type by name
* @param scopeName the Spring scope name
*/
public final void registerScope(String annotationType, String scopeName) {
this.scopeMap.put(annotationType, scopeName);
}
/**
* Resolve the given annotation type into a named Spring scope.
* The default implementation simply checks against registered scopes.
* Can be overridden for custom mapping rules, e.g. naming conventions.
* @param annotationType the JSR-330 annotation type
* @return the Spring scope name
*/
protected String resolveScopeName(String annotationType) {
return this.scopeMap.get(annotationType);
}
@Override
public ScopeMetadata resolveScopeMetadata(BeanDefinition definition) {
ScopeMetadata metadata = new ScopeMetadata();
metadata.setScopeName(BeanDefinition.SCOPE_PROTOTYPE);
if (definition instanceof AnnotatedBeanDefinition) {
AnnotatedBeanDefinition annDef = (AnnotatedBeanDefinition) definition;
Set annTypes = annDef.getMetadata().getAnnotationTypes();
String found = null;
for (String annType : annTypes) {
Set metaAnns = annDef.getMetadata().getMetaAnnotationTypes(annType);
if (metaAnns.contains("javax.inject.Scope")) {
if (found != null) {
throw new IllegalStateException("Found ambiguous scope annotations on bean class [" +
definition.getBeanClassName() + "]: " + found + ", " + annType);
}
found = annType;
String scopeName = resolveScopeName(annType);
if (scopeName == null) {
throw new IllegalStateException(
"Unsupported scope annotation - not mapped onto Spring scope name: " + annType);
}
metadata.setScopeName(scopeName);
}
}
}
return metadata;
}
}