Package org.geotools.util

Class KeySortedList<K extends Comparable<K>,​V>

  • Type Parameters:
    K - The type of keys in the sorted list, to be used for sorting.
    V - The type of elements in the list.
    All Implemented Interfaces:
    Serializable, Iterable<V>, Collection<V>, List<V>
    public class KeySortedList<K extends Comparable<K>,​V>
extends AbstractSequentialList<V>
implements Serializable
    List of elements sorted by a key which is not the element itself.

    This class is not thread-safe. Synchronizations (if wanted) are user's reponsability.

    Since:
    2.2
    Author:
    Simone Giannecchini, Martin Desruisseaux
    See Also:
    Serialized Form

    • Constructor Detail

      • KeySortedList

        public KeySortedList()
        Creates a new, initially empty list.

    • Method Detail

      • add

        public void add​(K key,
                V element)
        Inserts the specified element at a position determined by the specified key. If some elements were already inserted for the specified key, then this method do not replaces the old value (like what a Map would do), but instead add the new element with the same key.
        Parameters:
        key - Key to be used to find the right location.
        element - Object to be inserted.

      • removeAll

        public int removeAll​(K key)
        Removes all values that were added with the specified key.
        Parameters:
        key - The key of values to remove.
        Returns:
        The number of elements removed.

      • count

        public int count​(K key)
        Returns the number of elements added with the specified key.
        Parameters:
        key - The key of elements to count.
        Returns:
        The number of elements inserted with the given key.

      • containsKey

        public boolean containsKey​(K key)
        Returns true if the list contains an element added with the specified key. This is equivalent to testing count(key) != 0.

      • first

        public V first​(K key)
        throws NoSuchElementException
        Returns the first element added with the specified key.
        Parameters:
        key - The key for the element to search for.
        Returns:
        The first element added with the specified key.
        Throws:
        NoSuchElementException - if there is no element for the specified key.

      • last

        public V last​(K key)
       throws NoSuchElementException
        Returns the last element added with the specified key.
        Parameters:
        key - The key for the element to search for.
        Returns:
        The last element added with the specified key.
        Throws:
        NoSuchElementException - if there is no element for the specified key.

      • listIterator

        public ListIterator<V> listIterator​(K fromKey)
        Returns a list iterator of the elements in this list (in proper sequence), starting at the elements added with the specified key.
        Parameters:
        fromKey - The key of the first element to returns.
        Returns:
        A list iterator of the elements in this list (in proper sequence).
        Throws:
        IndexOutOfBoundsException - if the index is out of range.

      • listIterator

        public ListIterator<V> listIterator​(int index)
        Returns a list iterator of the elements in this list (in proper sequence), starting at the specified position. The specified index indicates the first element that would be returned by an initial call to the next() method.
        Specified by:
        listIterator in interface List<K extends Comparable<K>>
        Specified by:
        listIterator in class AbstractSequentialList<V>
        Parameters:
        index - Index of first element to be returned from the list iterator.
        Returns:
        A list iterator of the elements in this list (in proper sequence).
        Throws:
        IndexOutOfBoundsException - if the index is out of range.

      • headList

        public KeySortedList<K,​V> headList​(K toKey)
        Returns a view of the portion of this list whose keys are strictly less than toKey. The returned list is backed by this list, so changes in the returned list are reflected in this list, and vice-versa.
        Parameters:
        toKey - high endpoint (exclusive) of the sub list.
        Returns:
        A view of the specified initial range of this list.

      • tailList

        public KeySortedList<K,​V> tailList​(K fromKey)
        Returns a view of the portion of this list whose keys are greater than or equal to fromKey. The returned list is backed by this list, so changes in the returned list are reflected in this list, and vice-versa.
        Parameters:
        fromKey - low endpoint (inclusive) of the sub list.
        Returns:
        A view of the specified final range of this list.