Package com.zfabrik.impl.provider.resolver

Class ProviderResolver

  • All Implemented Interfaces:
    com.zfabrik.resources.provider.IResourceProvider, com.zfabrik.resources.provider.IResourceProviderBuilder
    public class ProviderResolver
extends com.zfabrik.resources.provider.Resource
implements com.zfabrik.resources.provider.IResourceProviderBuilder, com.zfabrik.resources.provider.IResourceProvider

    • Field Summary

      • Fields inherited from interface com.zfabrik.resources.provider.IResourceProvider

        PROP_NAMESPACE

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      com.zfabrik.resources.provider.IResourceProvider findProvider​(java.lang.String namespace)  
      com.zfabrik.resources.provider.Resource get​(java.lang.String name)
      retrieve a resource.
      void init()
      Called at initialization time with the resource management.
      void init​(com.zfabrik.resources.provider.IResourceProviderContext c)  
      void invalidate()
      This method gets called whenever a dependency resource has been invalidated or this resource needs to be invalidated.

      • Methods inherited from class com.zfabrik.resources.provider.Resource

        as, as, handle, init

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Constructor Detail

      • ProviderResolver

        public ProviderResolver()

    • Method Detail

      • init

        public void init()
        Description copied from class: com.zfabrik.resources.provider.Resource
        Called at initialization time with the resource management. At the point in time this method gets called, a handle has been associated.
        Overrides:
        init in class com.zfabrik.resources.provider.Resource

      • invalidate

        public void invalidate()
                throws com.zfabrik.resources.ResourceBusyException
        Description copied from class: com.zfabrik.resources.provider.Resource
        This method gets called whenever a dependency resource has been invalidated or this resource needs to be invalidated.

        This code should be executed in a life cycle code block of this resource instance, i.e. where dependencies are effectively managed, so that race conditions can be avoided.

        State changing methods of a resource should always be synchronized (e.g. on this). This is in particular true for cross-resource dependencies. In order to assure consistency under race conditions, a dependent resource should first declare its dependency and then retrieve the resource implementation. In case of failures, resources should clean up by calling handle().invalidate(true);

        Overrides:
        invalidate in class com.zfabrik.resources.provider.Resource
        Throws:
        com.zfabrik.resources.ResourceBusyException

      • findProvider

        public com.zfabrik.resources.provider.IResourceProvider findProvider​(java.lang.String namespace)
        Specified by:
        findProvider in interface com.zfabrik.resources.provider.IResourceProviderBuilder

      • init

        public void init​(com.zfabrik.resources.provider.IResourceProviderContext c)
        Specified by:
        init in interface com.zfabrik.resources.provider.IResourceProvider

      • get

        public com.zfabrik.resources.provider.Resource get​(java.lang.String name)
        Description copied from interface: com.zfabrik.resources.provider.IResourceProvider
        retrieve a resource. Returns null if the resource does not exist (or will not be made available). Throws ResourceNotAvailableException if the resource cannot be provided due to an error situation.
        Specified by:
        get in interface com.zfabrik.resources.provider.IResourceProvider
        Parameters:
        name - name of the resource
        Returns:
        the resource as a handle or null if the resource does not exist (or will not be made available).