NodeService injection in a cutom contentstore

[eu_81]

Hello,

I'm developing a custom Alfresco Content Store (by implementing the org.alfresco.repo.content.AbstractContentStore class). I'm using Alfresco Enterprise 3.4.9 and 4.0.1. Within this content store I need to get some information using NodeService. But when I'm setting the NodeService to my custom content store via Dependency Injection (

….
<property name="nodeService" ref="NodeService"/>
…‍‍‍

) I'm getting the following exception on startup.

10:24:51,154  ERROR [web.context.ContextLoader] Context initialization failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'messageService' defined in class path resource [alfresco/core-services-context.xml]: Cannot resolve reference to bean 'NodeService' while setting bean property 'nodeService'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'NodeService': FactoryBean threw exception on object creation; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'AuditMethodInterceptor' defined in class path resource [alfresco/public-services-context.xml]: Cannot resolve reference to bean 'auditComponent' while setting bean property 'auditComponent'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'auditComponent' defined in class path resource [alfresco/audit-services-context.xml]: Cannot resolve reference to bean 'auditDAO' while setting bean property 'auditDAO'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'auditDAO' defined in class path resource [alfresco/dao/dao-context.xml]: Cannot resolve reference to bean 'contentService' while setting bean property 'contentService'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'contentService' defined in file [C:\Alf3.4.9\tomcat\webapps\alfresco\WEB-INF\classes\alfresco\extension\hcp-content-store-context.xml]: Cannot resolve reference to bean 'nodeService' while setting bean property 'nodeService'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'nodeService': FactoryBean threw exception on object creation; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'nodeRefPropertyInterceptor' defined in class path resource [alfresco/node-services-context.xml]: Cannot resolve reference to bean 'mlAwareNodeService' while setting bean property 'nodeService'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'mlAwareNodeService' defined in class path resource [alfresco/node-services-context.xml]: Cannot resolve reference to bean 'mtAwareNodeService' while setting bean property 'defaultBinding'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'mtAwareNodeService': FactoryBean threw exception on object creation; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dbNodeService' defined in class path resource [alfresco/node-services-context.xml]: Cannot resolve reference to bean 'nodeDAO' while setting bean property 'nodeDAO'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'nodeDAO' defined in class path resource [alfresco/dao/dao-context.xml]: Cannot resolve reference to bean 'contentDataDAO' while setting bean property 'contentDataDAO'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'contentDataDAO' defined in class path resource [alfresco/dao/dao-context.xml]: Cannot resolve reference to bean 'eagerContentStoreCleaner' while setting bean property 'contentStoreCleaner'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'eagerContentStoreCleaner' defined in file [C:\Alf3.4.9\tomcat\webapps\alfresco\WEB-INF\classes\alfresco\extension\hcp-content-store-context.xml]: Cannot resolve reference to bean 'hcpHttpContentStore' while setting bean property 'stores' with key [1]; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'hcpHttpContentStore' defined in file [C:\Alf3.4.9\tomcat\webapps\alfresco\WEB-INF\classes\alfresco\extension\hcp-content-store-context.xml]: Cannot resolve reference to bean 'NodeService' while setting bean property 'nodeService'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'NodeService': FactoryBean threw exception on object creation; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'NodeService_security' defined in class path resource [alfresco/public-services-security-context.xml]: Cannot resolve reference to bean 'accessDecisionManager' while setting bean property 'accessDecisionManager'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'accessDecisionManager' defined in class path resource [alfresco/public-services-security-context.xml]: Cannot resolve reference to bean 'aclEntryVoter' while setting bean property 'decisionVoters' with key [2]; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'aclEntryVoter' defined in class path resource [alfresco/public-services-security-context.xml]: Cannot resolve reference to bean 'permissionService' while setting bean property 'permissionService'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'permissionService' defined in class path resource [alfresco/public-services-security-context.xml]: Cannot resolve reference to bean 'permissionServiceImpl' while setting bean property 'target'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'permissionServiceImpl' defined in class path resource [alfresco/public-services-security-context.xml]: Cannot resolve reference to bean 'permissionsModelDAO' while setting bean property 'modelDAO'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'permissionsModelDAO' defined in class path resource [alfresco/public-services-security-context.xml]: Cannot resolve reference to bean 'nodeService' while setting bean property 'nodeService'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'nodeService': FactoryBean threw exception on object creation; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'mlPropertyInterceptor' defined in class path resource [alfresco/node-services-context.xml]: Cannot resolve reference to bean 'mlAwareNodeService' while setting bean property 'nodeService'; nested exception is org.springframework.beans.factory.BeanCurrentlyInCreationException: Error creating bean with name 'mlAwareNodeService': FactoryBean which is currently in creation returned null from getObject
   at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:328)
   at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:106)
   at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1305)
   at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1067)
   at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:511)
   at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:450)
   at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:290)
   at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
   at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:287)
   at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:189)
   at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:557)
   at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:842)
   at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:416)
   at org.springframework.web.context.ContextLoader.createWebApplicationContext(ContextLoader.java:261)
   at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:192)
   at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:47)
   at org.alfresco.web.app.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:63)
   at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4206)
   at org.apache.catalina.core.StandardContext.start(StandardContext.java:4705)
   at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:799)
   at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:779)
   at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:601)
   at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:675)
   at org.apache.catalina.startup.HostConfig.deployDescriptors(HostConfig.java:601)
   at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:502)
   at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1317)
   at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:324)
   at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:142)
   at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1065)
   at org.apache.catalina.core.StandardHost.start(StandardHost.java:840)
   at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1057)
   at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:463)
   at org.apache.catalina.core.StandardService.start(StandardService.java:525)
   at org.apache.catalina.core.StandardServer.start(StandardServer.java:754)
   at org.apache.catalina.startup.Catalina.start(Catalina.java:595)
   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
   at java.lang.reflect.Method.invoke(Method.java:597)
   at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)
   at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)
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Note: The xml definition of my content store bean is located in <configRoot>/classes/alfresco/extention and this error appears only when inject the "NodeService" to the content store bean, it works for the others beans … Right now, the only way to access the NodeService within my content store is the ApplicationContext.

Thank you,
Emil

[afaust]

Hello,

although the general best practice is to use the public service beans in all instances of customizations to Alfresco, there are some cases where they cannot / should not be used. Due to the dependency of the NodeService (especially the mlNodeService) on the ContentService and its content stores, you have a cyclic dependency if you require the public service bean "NodeService". Instead, you should use the standard service bean "nodeService" - this is the same approach taken by Alfresco for their Enterprise Content Store Selector.
If at all possible, you should always avoid using the ApplicationContext. The only really valid use case I have found so far are HTTP servlet filters that can not be constructed via Spring - unless you use a proxy filter class, which Spring fortunately provides and thus even limits that use case.

Regards
Axel