Package dk.netarkivet.common.distribute.indexserver

Class TrivialJobIndexCache

  • All Implemented Interfaces:
    JobIndexCache
    public class TrivialJobIndexCache
extends java.lang.Object
implements JobIndexCache
    A trivial JobIndexCache implementation that just assumes somebody places the indexes in the right place (in TrivialJobIndexCache under the cache dir).

    • Constructor Summary

      Constructors 
      Constructor Description
      TrivialJobIndexCache​(RequestType t)
      Construct a trivial cache that requires manual setup of files.

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      Index<java.util.Set<java.lang.Long>> getIndex​(java.util.Set<java.lang.Long> jobIDs)
      Get an index for the given list of job IDs.
      void requestIndex​(java.util.Set<java.lang.Long> jobSet, java.lang.Long harvestId)
      Request an index from the indexserver.

      • Methods inherited from class java.lang.Object

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

    • Constructor Detail

      • TrivialJobIndexCache

        public TrivialJobIndexCache​(RequestType t)
        Construct a trivial cache that requires manual setup of files.

        The directory that the files are to be put into will be created by this method.

        Parameters:
        t - The type of requests handled

    • Method Detail

      • getIndex

        public Index<java.util.Set<java.lang.Long>> getIndex​(java.util.Set<java.lang.Long> jobIDs)
        Get an index for the given list of job IDs. The resulting file contains a suitably sorted list. This method should always be safe for asynchronous calling. This method may use a cached version of the file.
        Specified by:
        getIndex in interface JobIndexCache
        Parameters:
        jobIDs - Set of job IDs to generate index for.
        Returns:
        A file containing the index, and always the full set. The file must not be modified or deleted, since it is part of the cache of data.
        Throws:
        IOFailure - if there is no cache file for the set.

      • requestIndex

        public void requestIndex​(java.util.Set<java.lang.Long> jobSet,
                         java.lang.Long harvestId)
        Description copied from interface: JobIndexCache
        Request an index from the indexserver. Prepare the index but don't give it to me.
        Specified by:
        requestIndex in interface JobIndexCache
        Parameters:
        jobSet - Set of job IDs to generate index for.
        harvestId - Harvestdefinition associated with this set of jobs