com.aspectran.core.component.bean.AbstractBeanRegistry Maven / Gradle / Ivy
/*
* Copyright (c) 2008-2019 The Aspectran Project
*
* 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 com.aspectran.core.component.bean;
import com.aspectran.core.activity.Activity;
import com.aspectran.core.adapter.RequestAdapter;
import com.aspectran.core.component.bean.scope.RequestScope;
import com.aspectran.core.component.bean.scope.Scope;
import com.aspectran.core.component.bean.scope.SessionScope;
import com.aspectran.core.component.bean.scope.SingletonScope;
import com.aspectran.core.context.ActivityContext;
import com.aspectran.core.context.rule.BeanRule;
import com.aspectran.core.context.rule.type.BeanProxifierType;
import com.aspectran.core.context.rule.type.ScopeType;
import com.aspectran.core.lang.NonNull;
import com.aspectran.core.lang.Nullable;
import com.aspectran.core.util.logging.Log;
import com.aspectran.core.util.logging.LogFactory;
import java.util.Set;
import java.util.concurrent.locks.ReadWriteLock;
/**
* The Class AbstractBeanRegistry.
*
* Created: 2009. 03. 09 PM 23:48:09
*/
abstract class AbstractBeanRegistry extends AbstractBeanFactory implements BeanRegistry {
private static final Log log = LogFactory.getLog(AbstractBeanRegistry.class);
private final SingletonScope singletonScope = new SingletonScope();
private final BeanRuleRegistry beanRuleRegistry;
AbstractBeanRegistry(ActivityContext context, BeanRuleRegistry beanRuleRegistry,
BeanProxifierType beanProxifierType) {
super(context, beanProxifierType);
this.beanRuleRegistry = beanRuleRegistry;
}
protected BeanRuleRegistry getBeanRuleRegistry() {
return beanRuleRegistry;
}
@SuppressWarnings("unchecked")
protected V getBean(BeanRule beanRule) {
if (beanRule.getScopeType() == ScopeType.SINGLETON) {
return (V)getSingletonScopeBean(beanRule);
} else if (beanRule.getScopeType() == ScopeType.PROTOTYPE) {
// Does not manage the complete lifecycle of a prototype bean.
// In particular, Aspectran does not manage destruction phase of prototype-scoped beans.
return (V)getPrototypeScopeBean(beanRule);
} else if (beanRule.getScopeType() == ScopeType.REQUEST) {
return (V)getRequestScopeBean(beanRule);
} else if (beanRule.getScopeType() == ScopeType.SESSION) {
return (V)getSessionScopeBean(beanRule);
}
throw new BeanCreationException(beanRule);
}
private Object getSingletonScopeBean(BeanRule beanRule) {
if (beanRule == null) {
throw new IllegalArgumentException("beanRule must not be null");
}
return getScopedBean(singletonScope, beanRule);
}
@Override
@SuppressWarnings("unchecked")
public V getPrototypeScopeBean(BeanRule beanRule) {
if (beanRule == null) {
throw new IllegalArgumentException("beanRule must not be null");
}
Object bean = createBean(beanRule);
if (bean != null && beanRule.isFactoryProductionRequired()) {
bean = getFactoryProducedObject(beanRule, bean);
}
return (V)bean;
}
private Object getRequestScopeBean(BeanRule beanRule) {
if (beanRule == null) {
throw new IllegalArgumentException("beanRule must not be null");
}
Scope scope = getRequestScope();
if (scope == null) {
throw new UnsupportedBeanScopeException(ScopeType.REQUEST, beanRule);
}
return getScopedBean(scope, beanRule);
}
private Object getSessionScopeBean(BeanRule beanRule) {
if (beanRule == null) {
throw new IllegalArgumentException("beanRule must not be null");
}
Scope scope = getSessionScope();
if (scope == null) {
throw new UnsupportedBeanScopeException(ScopeType.SESSION, beanRule);
}
return getScopedBean(scope, beanRule);
}
private Object getScopedBean(Scope scope, BeanRule beanRule) {
ReadWriteLock scopeLock = scope.getScopeLock();
if (scopeLock == null) {
Object bean;
BeanInstance instance = scope.getBeanInstance(beanRule);
if (instance == null) {
bean = createBean(beanRule, scope);
} else {
bean = instance.getBean();
}
if (bean != null && beanRule.isFactoryProductionRequired()) {
bean = getFactoryProducedObject(beanRule, bean);
}
return bean;
} else {
boolean readLocked = true;
scopeLock.readLock().lock();
Object bean;
try {
BeanInstance instance = scope.getBeanInstance(beanRule);
if (instance == null) {
readLocked = false;
scopeLock.readLock().unlock();
scopeLock.writeLock().lock();
try {
instance = scope.getBeanInstance(beanRule);
if (instance == null) {
bean = createBean(beanRule, scope);
} else {
bean = instance.getBean();
}
if (bean != null && beanRule.isFactoryProductionRequired()) {
bean = getFactoryProducedObject(beanRule, bean);
}
} finally {
scopeLock.writeLock().unlock();
}
} else {
bean = instance.getBean();
if (bean != null && beanRule.isFactoryProductionRequired()) {
readLocked = false;
scopeLock.readLock().unlock();
scopeLock.writeLock().lock();
try {
bean = getFactoryProducedObject(beanRule, bean);
} finally {
scopeLock.writeLock().unlock();
}
}
}
} finally {
if (readLocked) {
scopeLock.readLock().unlock();
}
}
return bean;
}
}
private RequestScope getRequestScope() {
Activity activity = getActivityContext().getCurrentActivity();
if (activity != null) {
RequestAdapter requestAdapter = activity.getRequestAdapter();
if (requestAdapter != null) {
return requestAdapter.getRequestScope(true);
}
}
return null;
}
private SessionScope getSessionScope() {
Activity activity = getActivityContext().getCurrentActivity();
if (activity != null) {
return SessionScope.restore(activity, getBeanRuleRegistry());
} else {
return null;
}
}
@Override
public boolean hasSingleton(Object bean) {
ReadWriteLock scopeLock = singletonScope.getScopeLock();
scopeLock.readLock().lock();
try {
return (singletonScope.getBeanRule(bean) != null);
} finally {
scopeLock.readLock().unlock();
}
}
@Override
public boolean hasSingleton(@NonNull Class type) {
return hasSingleton(type, null);
}
@Override
public boolean hasSingleton(@NonNull Class type, @Nullable String id) {
ReadWriteLock scopeLock = singletonScope.getScopeLock();
scopeLock.readLock().lock();
try {
BeanRule[] beanRules = getBeanRuleRegistry().getBeanRules(type);
if (beanRules == null) {
BeanRule beanRule = getBeanRuleRegistry().getBeanRuleForConfig(type);
if (beanRule != null) {
return singletonScope.containsBeanRule(beanRule);
} else {
return false;
}
}
if (beanRules.length == 1) {
if (id != null) {
if (id.equals(beanRules[0].getId())) {
return singletonScope.containsBeanRule(beanRules[0]);
} else {
return false;
}
} else {
return singletonScope.containsBeanRule(beanRules[0]);
}
} else {
if (id != null) {
for (BeanRule beanRule : beanRules) {
if (id.equals(beanRule.getId())) {
return singletonScope.containsBeanRule(beanRule);
}
}
return false;
} else {
for (BeanRule beanRule : beanRules) {
if (singletonScope.containsBeanRule(beanRule)) {
return true;
}
}
return false;
}
}
} finally {
scopeLock.readLock().unlock();
}
}
@Override
public void destroySingleton(Object bean) throws Exception {
ReadWriteLock scopeLock = singletonScope.getScopeLock();
boolean readLocked = true;
scopeLock.readLock().lock();
try {
BeanRule beanRule = singletonScope.getBeanRule(bean);
if (beanRule != null) {
readLocked = false;
scopeLock.readLock().unlock();
scopeLock.writeLock().lock();
try {
singletonScope.destroy(bean);
} finally {
scopeLock.writeLock().unlock();
}
}
} finally {
if (readLocked) {
scopeLock.readLock().unlock();
}
}
}
/**
* Instantiate all singletons(non-lazy-init).
*/
private void instantiateSingletons() {
if (log.isDebugEnabled()) {
log.debug("Initializing singletons in " + this);
}
Activity activity = getActivityContext().getDefaultActivity();
for (BeanRule beanRule : beanRuleRegistry.getIdBasedBeanRules()) {
instantiateSingleton(beanRule, activity);
}
for (Set beanRuleSet : beanRuleRegistry.getTypeBasedBeanRules()) {
for (BeanRule beanRule : beanRuleSet) {
instantiateSingleton(beanRule, activity);
}
}
for (BeanRule beanRule : beanRuleRegistry.getConfigurableBeanRules()) {
instantiateSingleton(beanRule, activity);
}
}
private void instantiateSingleton(BeanRule beanRule, Activity activity) {
if (beanRule.isSingleton() && !beanRule.isLazyInit()
&& !singletonScope.containsBeanRule(beanRule)) {
createBean(beanRule, singletonScope, activity);
}
}
/**
* Destroy all cached singletons.
*/
private void destroySingletons() {
if (log.isDebugEnabled()) {
log.debug("Destroying singletons in " + this);
}
singletonScope.destroy();
}
@Override
protected void doInitialize() throws Exception {
instantiateSingletons();
}
@Override
protected void doDestroy() throws Exception {
destroySingletons();
}
}