Package com.tangosol.net.cache

Class SimpleOverflowMap.KeyIterator

  • All Implemented Interfaces:
    Iterator
    Enclosing class:
    SimpleOverflowMap
    protected class SimpleOverflowMap.KeyIterator
extends Object
implements Iterator
    An Iterator implementation that attempts to provide the most resilient and most up-to-date view of the keys in the OverflowMap. This means that it will avoid throwing a ConcurrentModificationException, and that it will attempt to directly use the underlying iterators available for the front and back maps.

    • Constructor Detail

      • KeyIterator

        public KeyIterator()
        Default constructor.

    • Method Detail

      • hasNext

        public boolean hasNext()
        Returns true if the iteration has more elements. (In other words, returns true if next would return an element rather than throwing an exception.)
        Specified by:
        hasNext in interface Iterator
        Returns:
        true if the iterator has more elements

      • next

        public Object next()
        Returns the next element in the iteration.
        Specified by:
        next in interface Iterator
        Returns:
        the next element in the iteration
        Throws:
        NoSuchElementException - if the Iterator has no more elements

      • remove

        public void remove()
        Removes from the underlying collection the last element returned by the iterator.
        Specified by:
        remove in interface Iterator
        Throws:
        IllegalStateException - if the next method has not yet been called, or the remove method has already been called after the last call to the next method

      • advance

        protected boolean advance()
        Advance to the next key.
        Returns:
        true if there is a next key

      • useFrontIterator

        protected void useFrontIterator()
        Switch to a snapshot iterator.

      • useBackIterator

        protected void useBackIterator()
        Switch to an iterator over the back map.

      • useSnapshotIterator

        protected void useSnapshotIterator()
        Switch to a snapshot iterator.

      • useDoneIterator

        protected void useDoneIterator()
        Switch to an iterator over nothing.