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com.aspectran.core.component.bean.BeanRuleRegistry 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.component.bean.ablility.DisposableBean;
import com.aspectran.core.component.bean.ablility.FactoryBean;
import com.aspectran.core.component.bean.ablility.InitializableBean;
import com.aspectran.core.component.bean.ablility.InitializableTransletBean;
import com.aspectran.core.component.bean.annotation.Component;
import com.aspectran.core.component.bean.aware.ActivityContextAware;
import com.aspectran.core.component.bean.aware.ApplicationAdapterAware;
import com.aspectran.core.component.bean.aware.ClassLoaderAware;
import com.aspectran.core.component.bean.aware.CurrentActivityAware;
import com.aspectran.core.component.bean.aware.EnvironmentAware;
import com.aspectran.core.component.bean.scan.BeanClassScanFilter;
import com.aspectran.core.component.bean.scan.BeanClassScanner;
import com.aspectran.core.context.rule.AspectRule;
import com.aspectran.core.context.rule.AutowireRule;
import com.aspectran.core.context.rule.BeanRule;
import com.aspectran.core.context.rule.IllegalRuleException;
import com.aspectran.core.context.rule.ScheduleRule;
import com.aspectran.core.context.rule.TransletRule;
import com.aspectran.core.context.rule.assistant.ContextRuleAssistant;
import com.aspectran.core.context.rule.params.FilterParameters;
import com.aspectran.core.context.rule.type.ScopeType;
import com.aspectran.core.util.ClassUtils;
import com.aspectran.core.util.PrefixSuffixPattern;
import com.aspectran.core.util.StringUtils;
import com.aspectran.core.util.logging.Log;
import com.aspectran.core.util.logging.LogFactory;
import java.lang.annotation.Annotation;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashSet;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;
/**
* The Class BeanRuleRegistry.
*
* @since 2.0.0
*/
public class BeanRuleRegistry {
private static final Log log = LogFactory.getLog(BeanRuleRegistry.class);
private final Map idBasedBeanRuleMap = new LinkedHashMap<>();
private final Map, Set> typeBasedBeanRuleMap = new LinkedHashMap<>();
private final Map, BeanRule> configurableBeanRuleMap = new LinkedHashMap<>();
private final Set> ignoredDependencyInterfaces = new HashSet<>();
private final Set postProcessBeanRuleMap = new HashSet<>();
private final Set importantBeanIdSet = new HashSet<>();
private final Set> importantBeanTypeSet = new HashSet<>();
private final ClassLoader classLoader;
public BeanRuleRegistry(ClassLoader classLoader) {
this.classLoader = classLoader;
ignoreDependencyInterface(DisposableBean.class);
ignoreDependencyInterface(FactoryBean.class);
ignoreDependencyInterface(InitializableBean.class);
ignoreDependencyInterface(InitializableTransletBean.class);
ignoreDependencyInterface(ActivityContextAware.class);
ignoreDependencyInterface(ApplicationAdapterAware.class);
ignoreDependencyInterface(ClassLoaderAware.class);
ignoreDependencyInterface(CurrentActivityAware.class);
ignoreDependencyInterface(EnvironmentAware.class);
ignoreDependencyInterface(java.lang.Comparable.class);
ignoreDependencyInterface(java.lang.CharSequence.class);
ignoreDependencyInterface(java.io.Serializable.class);
ignoreDependencyInterface(java.io.Closeable.class);
}
public BeanRule getBeanRule(String id) {
return idBasedBeanRuleMap.get(id);
}
public BeanRule[] getBeanRules(String name) throws ClassNotFoundException {
if (name.startsWith(BeanRule.CLASS_DIRECTIVE_PREFIX)) {
String className = name.substring(BeanRule.CLASS_DIRECTIVE_PREFIX.length());
Class type = classLoader.loadClass(className);
return getBeanRules(type);
} else {
BeanRule beanRule = getBeanRule(name);
if (beanRule != null) {
return new BeanRule[] {getBeanRule(name)};
} else {
return null;
}
}
}
public BeanRule[] getBeanRules(Class type) {
Set list = typeBasedBeanRuleMap.get(type);
if (list != null && !list.isEmpty()) {
return list.toArray(new BeanRule[0]);
} else {
return null;
}
}
public BeanRule getBeanRuleForConfig(Class type) {
return configurableBeanRuleMap.get(type);
}
public boolean containsBeanRule(String id) {
return idBasedBeanRuleMap.containsKey(id);
}
public boolean containsBeanRule(Class type) {
return typeBasedBeanRuleMap.containsKey(type);
}
public Map getIdBasedBeanRuleMap() {
return idBasedBeanRuleMap;
}
public Map, Set> getTypeBasedBeanRuleMap() {
return typeBasedBeanRuleMap;
}
public Map, BeanRule> getConfigurableBeanRuleMap() {
return configurableBeanRuleMap;
}
public Collection getIdBasedBeanRules() {
return idBasedBeanRuleMap.values();
}
public Collection> getTypeBasedBeanRules() {
return typeBasedBeanRuleMap.values();
}
public Collection getConfigurableBeanRules() {
return configurableBeanRuleMap.values();
}
public Collection> findConfigBeanClassesWithAnnotation(Class annotationType) {
List> result = new ArrayList<>();
for (BeanRule beanRule : configurableBeanRuleMap.values()) {
Class targetBeanClass = beanRule.getTargetBeanClass();
if (targetBeanClass.isAnnotationPresent(annotationType)) {
result.add(targetBeanClass);
}
}
return result;
}
/**
* Scans for annotated components.
*
* @param basePackages the base packages to scan for annotated components
* @throws BeanRuleException if an illegal bean rule is found
*/
public void scanConfigurableBeans(String... basePackages) throws BeanRuleException {
if (basePackages == null || basePackages.length == 0) {
return;
}
log.info("Auto component scanning on packages [" + StringUtils.joinCommaDelimitedList(basePackages) + "]");
for (String basePackage : basePackages) {
BeanClassScanner scanner = new BeanClassScanner(classLoader);
List beanRules = new ArrayList<>();
scanner.scan(basePackage + ".**", (resourceName, targetClass) -> {
if (targetClass.isAnnotationPresent(Component.class)) {
BeanRule beanRule = new BeanRule();
beanRule.setBeanClass(targetClass);
beanRule.setScopeType(ScopeType.SINGLETON);
beanRules.add(beanRule);
}
});
for (BeanRule beanRule : beanRules) {
saveConfigurableBeanRule(beanRule);
}
}
}
/**
* Adds a bean rule.
*
* @param beanRule the bean rule to add
* @throws IllegalRuleException if an error occurs while adding a bean rule
*/
public void addBeanRule(final BeanRule beanRule) throws IllegalRuleException {
if (beanRule == null) {
throw new IllegalArgumentException("beanRule must not be null");
}
String scanPattern = beanRule.getScanPattern();
if (scanPattern != null) {
PrefixSuffixPattern prefixSuffixPattern = PrefixSuffixPattern.parse(beanRule.getId());
List scannedBeanRules = new ArrayList<>();
BeanClassScanner scanner = createBeanClassScanner(beanRule);
scanner.scan(scanPattern, (resourceName, targetClass) -> {
BeanRule replicated = beanRule.replicate();
if (prefixSuffixPattern != null) {
replicated.setId(prefixSuffixPattern.join(resourceName));
} else {
if (beanRule.getId() != null) {
replicated.setId(beanRule.getId() + resourceName);
} else if (beanRule.getMaskPattern() != null) {
replicated.setId(resourceName);
}
}
replicated.setBeanClass(targetClass);
scannedBeanRules.add(replicated);
});
for (BeanRule scannedBeanRule : scannedBeanRules) {
dissectBeanRule(scannedBeanRule);
}
} else {
dissectBeanRule(beanRule);
}
}
private BeanClassScanner createBeanClassScanner(BeanRule beanRule) throws IllegalRuleException {
BeanClassScanner scanner = new BeanClassScanner(classLoader);
if (beanRule.getFilterParameters() != null) {
FilterParameters filterParameters = beanRule.getFilterParameters();
String beanClassScanFilterClassName = filterParameters.getString(FilterParameters.filterClass);
if (beanClassScanFilterClassName != null) {
BeanClassScanFilter beanClassScanFilter;
try {
Class filterClass = classLoader.loadClass(beanClassScanFilterClassName);
beanClassScanFilter = (BeanClassScanFilter)ClassUtils.createInstance(filterClass);
} catch (Exception e) {
throw new IllegalRuleException("Failed to instantiate BeanClassScanFilter [" +
beanClassScanFilterClassName + "]", e);
}
scanner.setBeanClassScanFilter(beanClassScanFilter);
}
String[] excludePatterns = filterParameters.getStringArray(FilterParameters.exclude);
if (excludePatterns != null) {
scanner.setExcludePatterns(excludePatterns);
}
}
if (beanRule.getMaskPattern() != null) {
scanner.setBeanIdMaskPattern(beanRule.getMaskPattern());
}
return scanner;
}
private void dissectBeanRule(BeanRule beanRule) throws BeanRuleException {
Class targetBeanClass = BeanRuleAnalyzer.determineBeanClass(beanRule);
if (targetBeanClass == null) {
postProcessBeanRuleMap.add(beanRule);
} else {
if (beanRule.getId() != null) {
saveBeanRule(beanRule.getId(), beanRule);
}
if (!beanRule.isFactoryOffered()) {
if (targetBeanClass.isAnnotationPresent(Component.class)) {
saveConfigurableBeanRule(beanRule);
} else {
saveBeanRule(targetBeanClass, beanRule);
saveBeanRuleWithInterfaces(targetBeanClass, beanRule);
}
}
if (log.isTraceEnabled()) {
log.trace("add BeanRule " + beanRule);
}
}
}
private void saveBeanRule(String beanId, BeanRule beanRule) throws BeanRuleException {
if (importantBeanIdSet.contains(beanId)) {
throw new BeanRuleException("Already exists an ID-based bean that can not be overridden; Duplicated bean",
beanRule);
}
if (beanRule.isImportant()) {
importantBeanIdSet.add(beanRule.getId());
}
idBasedBeanRuleMap.put(beanId, beanRule);
}
private void saveBeanRule(Class beanClass, BeanRule beanRule) throws BeanRuleException {
if (importantBeanTypeSet.contains(beanClass)) {
throw new BeanRuleException("Already exists a type-based bean that can not be overridden; Duplicated bean",
beanRule);
}
if (beanRule.isImportant()) {
importantBeanTypeSet.add(beanClass);
}
Set set = typeBasedBeanRuleMap.computeIfAbsent(beanClass, k -> new HashSet<>());
set.add(beanRule);
}
private void saveBeanRuleWithInterfaces(Class beanClass, BeanRule beanRule) throws BeanRuleException {
if (beanClass.isInterface()) {
Class[] ifcs = beanClass.getInterfaces();
for (Class ifc : ifcs) {
if (!ignoredDependencyInterfaces.contains(ifc) &&
ClassUtils.isVisible(ifc, classLoader)) {
saveBeanRule(ifc, beanRule);
}
}
} else {
Class current = beanClass;
while (current != null) {
Class[] ifcs = current.getInterfaces();
for (Class ifc : ifcs) {
if (!ignoredDependencyInterfaces.contains(ifc) &&
ClassUtils.isVisible(ifc, classLoader)) {
saveBeanRule(ifc, beanRule);
saveBeanRuleWithInterfaces(ifc, beanRule);
}
}
current = current.getSuperclass();
}
}
}
private void saveConfigurableBeanRule(BeanRule beanRule) throws BeanRuleException {
if (beanRule.getBeanClass() == null) {
throw new BeanRuleException("No specified bean class", beanRule);
}
configurableBeanRuleMap.put(beanRule.getBeanClass(), beanRule);
}
public void addInnerBeanRule(BeanRule beanRule) throws BeanRuleException {
if (beanRule == null) {
throw new IllegalArgumentException("beanRule must not be null");
}
if (!beanRule.isInnerBean()) {
throw new BeanRuleException("Not an inner bean", beanRule);
}
Class targetBeanClass = BeanRuleAnalyzer.determineBeanClass(beanRule);
if (targetBeanClass == null) {
postProcessBeanRuleMap.add(beanRule);
}
}
public void postProcess(ContextRuleAssistant assistant) throws IllegalRuleException {
if (!postProcessBeanRuleMap.isEmpty()) {
for (BeanRule beanRule : postProcessBeanRuleMap) {
if (!beanRule.isInnerBean() && beanRule.getId() != null) {
saveBeanRule(beanRule.getId(), beanRule);
}
if (beanRule.isFactoryOffered()) {
Class offeredFactoryBeanClass = resolveOfferedFactoryBeanClass(beanRule);
Class targetBeanClass = BeanRuleAnalyzer.determineFactoryMethodTargetBeanClass(
offeredFactoryBeanClass, beanRule);
if (beanRule.getInitMethodName() != null) {
BeanRuleAnalyzer.determineInitMethod(targetBeanClass, beanRule);
}
if (beanRule.getDestroyMethodName() != null) {
BeanRuleAnalyzer.determineDestroyMethod(targetBeanClass, beanRule);
}
if (!beanRule.isInnerBean()) {
saveBeanRule(targetBeanClass, beanRule);
saveBeanRuleWithInterfaces(targetBeanClass, beanRule);
}
}
}
postProcessBeanRuleMap.clear();
}
importantBeanIdSet.clear();
importantBeanTypeSet.clear();
parseAnnotatedConfig(assistant);
}
private void parseAnnotatedConfig(ContextRuleAssistant assistant) throws IllegalRuleException {
AnnotatedConfigRelater relater = new AnnotatedConfigRelater() {
@Override
public void relay(Class targetBeanClass, BeanRule beanRule) throws IllegalRuleException {
if (beanRule.getId() != null) {
saveBeanRule(beanRule.getId(), beanRule);
}
saveBeanRule(targetBeanClass, beanRule);
saveBeanRuleWithInterfaces(targetBeanClass, beanRule);
}
@Override
public void relay(AspectRule aspectRule) throws IllegalRuleException {
assistant.addAspectRule(aspectRule);
}
@Override
public void relay(ScheduleRule scheduleRule) throws IllegalRuleException {
assistant.addScheduleRule(scheduleRule);
}
@Override
public void relay(TransletRule transletRule) throws IllegalRuleException {
assistant.addTransletRule(transletRule);
}
@Override
public void relay(AutowireRule autowireRule) throws IllegalRuleException {
assistant.resolveBeanClass(autowireRule);
}
};
AnnotatedConfigParser parser = new AnnotatedConfigParser(assistant, relater);
parser.parse();
}
private Class resolveOfferedFactoryBeanClass(BeanRule beanRule) throws BeanRuleException {
BeanRule offeredFactoryBeanRule;
if (beanRule.getFactoryBeanClass() == null) {
offeredFactoryBeanRule = getBeanRule(beanRule.getFactoryBeanId());
if (offeredFactoryBeanRule == null) {
throw new BeanRuleException("No factory bean named '" + beanRule.getFactoryBeanId() +
"' is defined; Caller bean ", beanRule);
}
} else {
BeanRule[] beanRules = getBeanRules(beanRule.getFactoryBeanClass());
if (beanRules == null || beanRules.length == 0) {
throw new BeanRuleException("No matching factory bean of type '" +
beanRule.getFactoryBeanClass().getName() + "' found", beanRule);
}
if (beanRules.length > 1) {
throw new BeanRuleException("No unique factory bean of type '" +
beanRule.getFactoryBeanClass().getName() + "' is defined: expected single matching bean but found " +
beanRules.length + ": (" + NoUniqueBeanException.getBeanDescriptions(beanRules) + "); Caller bean ",
beanRule);
}
offeredFactoryBeanRule = beanRules[0];
}
if (offeredFactoryBeanRule.isFactoryOffered()) {
throw new BeanRuleException("An offered factory bean can not call " +
"another offered factory bean; Caller bean ", beanRule);
}
return offeredFactoryBeanRule.getTargetBeanClass();
}
public void ignoreDependencyInterface(Class ifc) {
this.ignoredDependencyInterfaces.add(ifc);
}
}
