Package org.apache.catalina.util

Class ResourceSet<T>

  • Type Parameters:
    T - The type of elements in the Set
    All Implemented Interfaces:
    java.io.Serializable, java.lang.Cloneable, java.lang.Iterable<T>, java.util.Collection<T>, java.util.Set<T>
    public final class ResourceSet<T>
extends java.util.HashSet<T>
    Extended implementation of HashSet that includes a locked property. This class can be used to safely expose resource path sets to user classes without having to clone them in order to avoid modifications. When first created, a ResourceMap is not locked.
    Author:
    Craig R. McClanahan
    See Also:
    Serialized Form

    • Constructor Summary

      Constructors 
      Constructor Description
      ResourceSet()
      Construct a new, empty set with the default initial capacity and load factor.
      ResourceSet​(int initialCapacity)
      Construct a new, empty set with the specified initial capacity and default load factor.
      ResourceSet​(int initialCapacity, float loadFactor)
      Construct a new, empty set with the specified initial capacity and load factor.
      ResourceSet​(java.util.Collection<T> coll)
      Construct a new set with the same contents as the existing collection.

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      boolean add​(T o)
      Add the specified element to this set if it is not already present.
      void clear()
      Remove all of the elements from this set.
      boolean isLocked()  
      boolean remove​(java.lang.Object o)
      Remove the given element from this set if it is present.
      void setLocked​(boolean locked)
      Set the locked state of this parameter map.

      • Methods inherited from class java.util.HashSet

        clone, contains, isEmpty, iterator, size, spliterator

      • Methods inherited from class java.util.AbstractSet

        equals, hashCode, removeAll

      • Methods inherited from class java.util.AbstractCollection

        addAll, containsAll, retainAll, toArray, toArray, toString

      • Methods inherited from class java.lang.Object

        finalize, getClass, notify, notifyAll, wait, wait, wait

      • Methods inherited from interface java.util.Collection

        parallelStream, removeIf, stream, toArray

      • Methods inherited from interface java.lang.Iterable

        forEach

      • Methods inherited from interface java.util.Set

        addAll, containsAll, equals, hashCode, removeAll, retainAll, toArray, toArray

    • Constructor Detail

      • ResourceSet

        public ResourceSet()
        Construct a new, empty set with the default initial capacity and load factor.

      • ResourceSet

        public ResourceSet​(int initialCapacity)
        Construct a new, empty set with the specified initial capacity and default load factor.
        Parameters:
        initialCapacity - The initial capacity of this set

      • ResourceSet

        public ResourceSet​(int initialCapacity,
                   float loadFactor)
        Construct a new, empty set with the specified initial capacity and load factor.
        Parameters:
        initialCapacity - The initial capacity of this set
        loadFactor - The load factor of this set

      • ResourceSet

        public ResourceSet​(java.util.Collection<T> coll)
        Construct a new set with the same contents as the existing collection.
        Parameters:
        coll - The collection whose contents we should copy

    • Method Detail

      • isLocked

        public boolean isLocked()
        Returns:
        the locked state of this parameter map.

      • setLocked

        public void setLocked​(boolean locked)
        Set the locked state of this parameter map.
        Parameters:
        locked - The new locked state

      • add

        public boolean add​(T o)
        Add the specified element to this set if it is not already present. Return true if the element was added.
        Specified by:
        add in interface java.util.Collection<T>
        Specified by:
        add in interface java.util.Set<T>
        Overrides:
        add in class java.util.HashSet<T>
        Parameters:
        o - The object to be added
        Throws:
        java.lang.IllegalStateException - if this ResourceSet is locked

      • clear

        public void clear()
        Remove all of the elements from this set.
        Specified by:
        clear in interface java.util.Collection<T>
        Specified by:
        clear in interface java.util.Set<T>
        Overrides:
        clear in class java.util.HashSet<T>
        Throws:
        java.lang.IllegalStateException - if this ResourceSet is locked

      • remove

        public boolean remove​(java.lang.Object o)
        Remove the given element from this set if it is present. Return true if the element was removed.
        Specified by:
        remove in interface java.util.Collection<T>
        Specified by:
        remove in interface java.util.Set<T>
        Overrides:
        remove in class java.util.HashSet<T>
        Parameters:
        o - The object to be removed
        Throws:
        java.lang.IllegalStateException - if this ResourceSet is locked