Package com.tangosol.net.partition

Class PartitionSplittingBackingMap.MapArray

  • Enclosing class:
    PartitionSplittingBackingMap
    public static class PartitionSplittingBackingMap.MapArray
extends Object
    The MapArray is a data structure that provides a mapping between partition IDs and backing maps. It is immutable.

    • Constructor Detail

      • MapArray

        public MapArray​(int cPartitions)
        Construct an empty MapArray for a given partition count.
        Parameters:
        cPartitions - the maximum number of partitions

    • Method Detail

      • getPartitions

        public int[] getPartitions()
        Obtain an array of all of the current partition IDs for which there are backing maps.
        Returns:
        an array of all the partition IDs; the caller must not modify the returned array

      • getPartitionSet

        public PartitionSet getPartitionSet()
        Obtain a PartitionSet containing partition IDs for which there are backing maps.
        Returns:
        a PartitionSet containing all existing partition IDs; the caller must not modify the returned PartitionSet

      • getBackingMap

        public Map getBackingMap​(int nPid)
        Obtain the backing map that corresponds to a specified partition.
        Parameters:
        nPid - the partition id to obtain the backing map for
        Returns:
        the specified backing map or null if the partition does not have a backing map

      • getBackingMaps

        public Map[] getBackingMaps()
        Obtain an array of all of the current backing maps, one for each partition.
        Returns:
        an array of all the backing maps; the caller must not modify the returned array

      • getBackingMaps

        public Map[] getBackingMaps​(PartitionSet partitions)
        Obtain an array of the current backing maps for the partitions specified in the passed PartitionSet.
        Parameters:
        partitions - a PartitionSet to mask the backing maps by
        Returns:
        an array of the backing maps; the caller must not modify the returned array

      • getCacheStatistics

        public CacheStatistics[] getCacheStatistics()
        Obtain an array of all of the CacheStatistics objects for the current backing maps, one for each partition. Note that the CacheStatistics object can be null for any/all backing maps.
        Returns:
        an array of all the CacheStatics objects for the backing maps; the caller must not modify the returned array; the references in the array can be null

      • addMap

        public PartitionSplittingBackingMap.MapArray addMap​(int nPid,
                                                    Map mapBacking)
        Add a new mapping between a partition ID and its backing map.
        Parameters:
        nPid - the partition ID to add
        mapBacking - the backing map for the partition to add
        Returns:
        a new MapArray object containing the specified mapping

      • removeMap

        public PartitionSplittingBackingMap.MapArray removeMap​(int nPid)
        Remove the mapping for the specified partition ID and its corresponding backing map.
        Parameters:
        nPid - the partition ID to remove
        Returns:
        a new MapArray object that does not contain the specified mapping