Class EmptyDBIDs

    • Nested Class Summary

      Nested Classes 
      Modifier and Type Class Description
      protected static class  EmptyDBIDs.EmptyDBIDIterator
      Iterator for empty DBIDs-
    • Constructor Summary

      Constructors 
      Modifier Constructor Description
      protected EmptyDBIDs()
      Constructor.
    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      DBIDVar assignVar​(int index, DBIDVar var)
      Assign a DBID variable the value of position index.
      int binarySearch​(DBIDRef key)
      Search for the position of the given key, assuming that the data set is sorted.
      boolean contains​(DBIDRef o)
      Test whether an ID is contained.
      void forEach​(java.util.function.Consumer<? super DBIDRef> action)
      Execute a function for each ID.
      DBID get​(int i)
      Get the i'th entry (starting at 0)
      boolean isEmpty()
      Test for an empty DBID collection.
      DBIDArrayMIter iter()
      Iterable
      int size()
      Size of the DBID "collection".
      ArrayDBIDs slice​(int begin, int end)
      Slice a subarray (as view, not copy!)
      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    • Constructor Detail

      • EmptyDBIDs

        protected EmptyDBIDs()
        Constructor.
    • Method Detail

      • contains

        public boolean contains​(DBIDRef o)
        Description copied from interface: DBIDs
        Test whether an ID is contained.
        Specified by:
        contains in interface DBIDs
        Parameters:
        o - object to test
        Returns:
        true when contained
      • size

        public int size()
        Description copied from interface: ArrayDBIDs
        Size of the DBID "collection".
        Specified by:
        size in interface ArrayDBIDs
        Specified by:
        size in interface DBIDs
        Returns:
        size
      • isEmpty

        public boolean isEmpty()
        Description copied from interface: DBIDs
        Test for an empty DBID collection.
        Specified by:
        isEmpty in interface DBIDs
        Returns:
        true when empty.
      • assignVar

        public DBIDVar assignVar​(int index,
                                 DBIDVar var)
        Description copied from interface: ArrayDBIDs
        Assign a DBID variable the value of position index.
        Specified by:
        assignVar in interface ArrayDBIDs
        Parameters:
        index - Position
        var - Variable to assign the value to.
      • binarySearch

        public int binarySearch​(DBIDRef key)
        Description copied from interface: ArrayDBIDs
        Search for the position of the given key, assuming that the data set is sorted. For unsorted arrays, the result is undefined.

        For keys not found, -(1+insertion position) is returned, as for Java Collections.binarySearch(java.util.List<? extends java.lang.Comparable<? super T>>, T)

        Specified by:
        binarySearch in interface ArrayDBIDs
        Parameters:
        key - Key to search for
        Returns:
        Offset of key
      • slice

        public ArrayDBIDs slice​(int begin,
                                int end)
        Description copied from interface: ArrayDBIDs
        Slice a subarray (as view, not copy!)
        Specified by:
        slice in interface ArrayDBIDs
        Parameters:
        begin - Begin (inclusive)
        end - End (exclusive)
        Returns:
        Array slice.
      • forEach

        public void forEach​(java.util.function.Consumer<? super DBIDRef> action)
        Description copied from interface: DBIDs
        Execute a function for each ID.
        Specified by:
        forEach in interface DBIDs
        Parameters:
        action - Action to execute