Package org.apache.geode.modules.session.catalina.callback

Class LocalSessionCacheLoader

java.lang.Object
org.apache.geode.modules.session.catalina.callback.LocalSessionCacheLoader
All Implemented Interfaces:
CacheCallback, CacheLoader<String,jakarta.servlet.http.HttpSession>, Declarable
public class LocalSessionCacheLoader extends Object implements CacheLoader<String,jakarta.servlet.http.HttpSession>, Declarable

  • Constructor Details

    • LocalSessionCacheLoader

      public LocalSessionCacheLoader(Region<String,jakarta.servlet.http.HttpSession> backingRegion)

  • Method Details

    • load

      public jakarta.servlet.http.HttpSession load(LoaderHelper<String,jakarta.servlet.http.HttpSession> helper) throws CacheLoaderException
      Description copied from interface: CacheLoader
      Loads a value. Application writers should implement this method to customize the loading of a value. This method is called by the caching service when the requested value is not in the cache. Any exception (including an unchecked exception) thrown by this method is propagated back to and thrown by the invocation of Region.get(Object, Object) that triggered this load.

      Specified by:
      load in interface CacheLoader<String,jakarta.servlet.http.HttpSession>
      Parameters:
      helper - a LoaderHelper object that is passed in from cache service and provides access to the key, region, argument, and netSearch.
      Returns:
      the value supplied for this key, or null if no value can be supplied. A local loader will always be invoked if one exists. Otherwise one remote loader is invoked. Returning null causes Region.get(Object, Object) to return null.
      Throws:
      CacheLoaderException - if an error occurs. This exception or any other exception thrown by this method will be propagated back to the application from the get method.
      See Also:

    • close

      public void close()
      Description copied from interface: CacheCallback
      Called when the region containing this callback is closed or destroyed, when the cache is closed, or when a callback is removed from a region using an AttributesMutator.

      Implementations should cleanup any external resources such as database connections. Any runtime exceptions this method throws will be logged.

      It is possible for this method to be called multiple times on a single callback instance, so implementations must be tolerant of this.

      Specified by:
      close in interface CacheCallback
      See Also: