Package com.tangosol.net.partition

Class PartitionSplittingBackingMap.MapArray

java.lang.Object
com.tangosol.net.partition.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 Details

    • MapArray

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

  • Method Details

    • 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