Class ItemInfoCacheImpl

  • All Implemented Interfaces:
    ItemInfoCache

    public class ItemInfoCacheImpl
    extends Object
    implements ItemInfoCache
    This implementation of ItemInfoCache has a default size of 5000 items. Item infos are put into the cache after they have been read from the RepositoryService. If the cache is full, the oldest item is discarded. Reading items removes them from the cache. The underlying idea here is, that ItemInfos which are supplied by the RepositoryService but not immediately needed are put into the cache to avoid further round trips to RepositoryService. When they are needed later, they are read from the cache. There is no need to keep them in this cache after that point since they are present in the hierarchy from then on.
    • Field Detail

      • DEFAULT_CACHE_SIZE

        public static final int DEFAULT_CACHE_SIZE
        Default size of the cache.
        See Also:
        Constant Field Values
    • Constructor Detail

      • ItemInfoCacheImpl

        public ItemInfoCacheImpl()
        Create a new instance with the default cache size.
        See Also:
        DEFAULT_CACHE_SIZE
      • ItemInfoCacheImpl

        public ItemInfoCacheImpl​(int cacheSize)
        Create a new instance with a given cache size.
        Parameters:
        cacheSize -
    • Method Detail

      • getNodeInfo

        public ItemInfoCache.Entry<NodeInfo> getNodeInfo​(NodeId nodeId)
        This implementation removes the item from the cache if it is present. Furthermore if the nodeId id uuid based, and no item is found by the nodeId a second lookup is done by the path.
        Specified by:
        getNodeInfo in interface ItemInfoCache
        Parameters:
        nodeId - id of the entry to lookup.
        Returns:
        a Entry<NodeInfo> instance or null if not found.
      • getPropertyInfo

        public ItemInfoCache.Entry<PropertyInfo> getPropertyInfo​(PropertyId propertyId)
        This implementation removes the item from the cache if it is present. Furthermore if the propertyId id uuid based, and no item is found by the propertyId a second lookup is done by the path.
        Specified by:
        getPropertyInfo in interface ItemInfoCache
        Parameters:
        propertyId - id of the entry to lookup.
        Returns:
        a Entry<PropertyInfo> instance or null if not found.
      • put

        public void put​(ItemInfo info,
                        long generation)
        This implementation cached the item by its id and if the id is uuid based but has no path, also by its path.
        Specified by:
        put in interface ItemInfoCache
      • dispose

        public void dispose()
        Description copied from interface: ItemInfoCache
        Clear the cache and dispose all entries.
        Specified by:
        dispose in interface ItemInfoCache