A failed service injection into a component field is visible in the browser as
a spurious error about field _$resources
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Key: TAPESTRY-2517
URL: https://issues.apache.org/jira/browse/TAPESTRY-2517
Project: Tapestry
Issue Type: Bug
Components: tapestry-core
Affects Versions: 5.0.13
Reporter: Howard M. Lewis Ship
Priority: Critical
The error was that I was injecting a service but hadn't bound it in my
AppModule. Scanning down the console, I found the exception:
Caused by: java.lang.RuntimeException: Error obtaining injected value for field
com.formos.blog.pages.blog.BlogIndex.blogDAO: No service implements the
interface com.formos.blog.services.BlogDAO.
at
org.apache.tapestry5.internal.transform.InjectWorker.transform(InjectWorker.java:68)
at
$ComponentClassTransformWorker_11b13c8fa72.transform($ComponentClassTransformWorker_11b13c8fa72.java)
at
$ComponentClassTransformWorker_11b13c8fa68.transform($ComponentClassTransformWorker_11b13c8fa68.java)
at
org.apache.tapestry5.internal.services.ComponentClassTransformerImpl.transformComponentClass(ComponentClassTransformerImpl.java:161)
... 98 more
Caused by: java.lang.RuntimeException: No service implements the interface
com.formos.blog.services.BlogDAO.
at
org.apache.tapestry5.ioc.internal.RegistryImpl.getService(RegistryImpl.java:523)
at
org.apache.tapestry5.ioc.internal.ObjectLocatorImpl.getService(ObjectLocatorImpl.java:44)
at
org.apache.tapestry5.internal.services.ServiceInjectionProvider.provideInjection(ServiceInjectionProvider.java:40)
at
$InjectionProvider_11b13c8fa74.provideInjection($InjectionProvider_11b13c8fa74.java)
at
$InjectionProvider_11b13c8fa6d.provideInjection($InjectionProvider_11b13c8fa6d.java)
at
org.apache.tapestry5.internal.transform.InjectWorker.transform(InjectWorker.java:57)
However, the exception in the web browser was:
java.lang.RuntimeException
Class com.formos.blog.pages.blog.BlogIndex contains field(s) (_$resources) that
are not private. You should change these fields to private, and add accessor
methods if needed.
Stack trace
*
org.apache.tapestry5.internal.services.InternalClassTransformationImpl.verifyFields(InternalClassTransformationImpl.java:294)
*
org.apache.tapestry5.internal.services.InternalClassTransformationImpl.preloadMemberNames(InternalClassTransformationImpl.java:256)
*
org.apache.tapestry5.internal.services.InternalClassTransformationImpl.<init>(InternalClassTransformationImpl.java:151)
*
org.apache.tapestry5.internal.services.ComponentClassTransformerImpl.transformComponentClass(ComponentClassTransformerImpl.java:154)
*
org.apache.tapestry5.internal.services.ComponentInstantiatorSourceImpl.onLoad(ComponentInstantiatorSourceImpl.java:182)
* javassist.Loader.findClass(Loader.java:340)
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