001
014
015 package com.liferay.portal.spring.bean;
016
017 import com.liferay.portal.cluster.ClusterableAdvice;
018 import com.liferay.portal.kernel.bean.BeanLocatorException;
019 import com.liferay.portal.kernel.bean.BeanReference;
020 import com.liferay.portal.kernel.bean.IdentifiableBean;
021 import com.liferay.portal.kernel.bean.PortalBeanLocatorUtil;
022 import com.liferay.portal.kernel.log.Log;
023 import com.liferay.portal.kernel.log.LogFactoryUtil;
024
025 import java.io.PrintWriter;
026 import java.io.StringWriter;
027
028 import java.lang.reflect.Field;
029
030 import java.util.HashMap;
031 import java.util.Map;
032
033 import org.springframework.beans.BeansException;
034 import org.springframework.beans.factory.BeanCreationException;
035 import org.springframework.beans.factory.BeanFactory;
036 import org.springframework.beans.factory.BeanFactoryAware;
037 import org.springframework.beans.factory.NoSuchBeanDefinitionException;
038 import org.springframework.beans.factory.config.BeanPostProcessor;
039 import org.springframework.util.ReflectionUtils;
040
041
045 public class BeanReferenceAnnotationBeanPostProcessor
046 implements BeanFactoryAware, BeanPostProcessor {
047
048 public BeanReferenceAnnotationBeanPostProcessor() {
049 if (_log.isDebugEnabled()) {
050 _log.debug("Creating instance " + this.hashCode());
051 }
052 }
053
054 public void destroy() {
055 _beans.clear();
056 }
057
058 @Override
059 public Object postProcessAfterInitialization(Object bean, String beanName)
060 throws BeansException {
061
062 return bean;
063 }
064
065 @Override
066 public Object postProcessBeforeInitialization(Object bean, String beanName)
067 throws BeansException {
068
069 if (bean instanceof IdentifiableBean) {
070 IdentifiableBean identifiableBean = (IdentifiableBean)bean;
071
072 identifiableBean.setBeanIdentifier(beanName);
073 }
074 else if (beanName.endsWith("Service")) {
075 if (_log.isWarnEnabled()) {
076 _log.warn(
077 beanName + " should implement " +
078 IdentifiableBean.class.getName() +
079 " for " + ClusterableAdvice.class.getName());
080 }
081 }
082
083 _autoInject(bean, beanName, bean.getClass());
084
085 return bean;
086 }
087
088 @Override
089 public void setBeanFactory(BeanFactory beanFactory) throws BeansException {
090 _beanFactory = beanFactory;
091 }
092
093 private void _autoInject(
094 Object targetBean, String targetBeanName, Class<?> beanClass) {
095
096 if ((beanClass == null) || beanClass.isInterface()) {
097 return;
098 }
099
100 String className = beanClass.getName();
101
102 if (className.equals(_JAVA_LANG_OBJECT) ||
103 className.startsWith(_ORG_SPRINGFRAMEWORK)) {
104
105 return;
106 }
107
108 Field[] fields = beanClass.getDeclaredFields();
109
110 for (Field field : fields) {
111 BeanReference beanReference = field.getAnnotation(
112 BeanReference.class);
113
114 String referencedBeanName = null;
115 Class<?> referencedBeanType = null;
116
117 if (beanReference != null) {
118 referencedBeanName = beanReference.name();
119 referencedBeanType = beanReference.type();
120 }
121 else {
122 continue;
123 }
124
125 if (!Object.class.equals(referencedBeanType)) {
126 referencedBeanName = referencedBeanType.getName();
127 }
128
129 Object referencedBean = _beans.get(referencedBeanName);
130
131 if (referencedBean == null) {
132 try {
133 referencedBean = _beanFactory.getBean(referencedBeanName);
134 }
135 catch (NoSuchBeanDefinitionException nsbde) {
136 try {
137 referencedBean = PortalBeanLocatorUtil.locate(
138 referencedBeanName);
139 }
140 catch (BeanLocatorException ble) {
141 StringWriter stringWriter = new StringWriter();
142
143 try (PrintWriter printWriter = new PrintWriter(
144 stringWriter)) {
145
146 printWriter.print(
147 "BeanFactory could not find bean: ");
148
149 nsbde.printStackTrace(printWriter);
150
151 printWriter.print(
152 " and PortalBeanLocator failed with: ");
153 printWriter.append(ble.getMessage());
154 }
155
156 throw new BeanLocatorException(
157 stringWriter.toString(), ble);
158 }
159 }
160
161 _beans.put(referencedBeanName, referencedBean);
162 }
163
164 ReflectionUtils.makeAccessible(field);
165
166 BeanReferenceRefreshUtil.registerRefreshPoint(
167 targetBean, field, referencedBeanName);
168
169 try {
170 field.set(targetBean, referencedBean);
171 }
172 catch (Throwable t) {
173 throw new BeanCreationException(
174 targetBeanName, "Could not inject BeanReference fields", t);
175 }
176 }
177
178 _autoInject(targetBean, targetBeanName, beanClass.getSuperclass());
179 }
180
181 private static final String _JAVA_LANG_OBJECT = "java.lang.Object";
182
183 private static final String _ORG_SPRINGFRAMEWORK = "org.springframework";
184
185 private static final Log _log = LogFactoryUtil.getLog(
186 BeanReferenceAnnotationBeanPostProcessor.class);
187
188 private BeanFactory _beanFactory;
189 private final Map<String, Object> _beans = new HashMap<String, Object>();
190
191 }