Package org.onosproject.ui.table.cell

Class AbstractCellComparator

  • All Implemented Interfaces:
    CellComparator
    Direct Known Subclasses:
    DefaultCellComparator
    public abstract class AbstractCellComparator
extends java.lang.Object
implements CellComparator
    Base implementation of a CellComparator. This class takes care of dealing with null inputs; subclasses should implement their comparison knowing that both inputs are guaranteed to be non-null.

    • Method Summary

      All Methods Instance Methods Abstract Methods Concrete Methods 
      Modifier and Type Method Description
      int compare​(java.lang.Object o1, java.lang.Object o2)
      Compares its two arguments for order.
      protected abstract int nonNullCompare​(java.lang.Object o1, java.lang.Object o2)
      Compares its two arguments for order.

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Constructor Detail

      • AbstractCellComparator

        public AbstractCellComparator()

    • Method Detail

      • compare

        public int compare​(java.lang.Object o1,
                   java.lang.Object o2)
        Description copied from interface: CellComparator
        Compares its two arguments for order. Returns a negative integer, zero, or a positive integer as the first argument is less than, equal to, or greater than the second.

        Note that nulls are permitted, and should be sorted to the beginning of an ascending sort; i.e. null is considered to be "smaller" than non-null values.

        Specified by:
        compare in interface CellComparator
        Parameters:
        o1 - the first object to be compared
        o2 - the second object to be compared
        Returns:
        an integer representing relative ordering
        See Also:
        Comparator.compare(Object, Object)

      • nonNullCompare

        protected abstract int nonNullCompare​(java.lang.Object o1,
                                      java.lang.Object o2)
        Compares its two arguments for order. Returns a negative integer, zero, or a positive integer as the first argument is less than, equal to, or greater than the second.

        Note that both objects are guaranteed to be non-null.

        Parameters:
        o1 - the first object to be compared
        o2 - the second object to be compared
        Returns:
        an integer representing relative ordering
        Throws:
        java.lang.ClassCastException - if the arguments' types prevent them from being compared by this comparator
        See Also:
        Comparator.compare(Object, Object)