Class ExtractedMap

  • All Implemented Interfaces:
    java.io.Serializable, java.lang.Iterable<java.util.Map.Entry<IObject,​IObject>>, IObject

    public class ExtractedMap
    extends AbstractExtractedCollection<java.util.Map.Entry<IObject,​IObject>,​IMapExtractor>
    An abstract class representing a map extracted from the heap. It provides convenience methods for querying certain properties of the collection (e.g. size) and for extracting the elements of the collection
    Since:
    1.5
    See Also:
    Serialized Form
    • Method Detail

      • hasCollisionRatio

        public boolean hasCollisionRatio()
        Check if collision ratio can be calculated for the map.
        Returns:
        true if @getCollisionRatio() could be called
        See Also:
        getCollisionRatio()
      • getCollisionRatio

        public java.lang.Double getCollisionRatio()
                                           throws SnapshotException
        Get the ratio of collisions inside the map.
        Returns:
        the collision ratio as a Double between 0.0 and 1.0 inclusive, or possibly null
        Throws:
        SnapshotException - if there is a problem retrieving data from the snapshot
        See Also:
        hasCollisionRatio()
      • getByKeyIdentity

        public IObject getByKeyIdentity​(IObject key)
                                 throws SnapshotException
        Gets an object from the Map, searching by the key. The keys are matched by IDENTITY, so cannot be used to compare for example Strings
        Parameters:
        key -
        Returns:
        the value object, assuming a match by key identity
        Throws:
        SnapshotException - if there is a problem retrieving data from the snapshot
      • iterator

        public java.util.Iterator<java.util.Map.Entry<IObject,​IObject>> iterator()
        The entries of the map.