Package net.shibboleth.utilities.java.support.collection

Class LockableClassToInstanceMultiMap<B>

java.lang.Object
net.shibboleth.utilities.java.support.collection.ClassToInstanceMultiMap<B>
net.shibboleth.utilities.java.support.collection.LockableClassToInstanceMultiMap<B>
Type Parameters:
B - a bound for the types of values in the map
public class LockableClassToInstanceMultiMap<B>
extends ClassToInstanceMultiMap<B>
A specialization of ClassToInstanceMultiMap which exposes a map-specific instance of ReadWriteLock.

Callers of the map are generally responsible for explicitly locking and unlocking for reading and writing, based on application use cases and concurrency requirements. For simple single-statement atomic operations, convenience methods are supplied which execute the corresponding superclass operation under the read or write lock, as appropriate.

  • Field Details

    • readWriteLock

      @Nonnull private final ReadWriteLock readWriteLock
      The map's read write lock.

  • Constructor Details

    • LockableClassToInstanceMultiMap

      public LockableClassToInstanceMultiMap()
      Constructor.

    • LockableClassToInstanceMultiMap

      public LockableClassToInstanceMultiMap​(boolean isIndexingSupertypes)
      Constructor.
      Parameters:
      isIndexingSupertypes - indicates whether supertypes of a value should be indexed

  • Method Details

    • getReadWriteLock

      @Nonnull public ReadWriteLock getReadWriteLock()
      Get the map-specific instance of the ReadWriteLock.

      Callers of the map are responsible for explicitly locking (and unlocking) for reading and/or writing, based on application use cases.

      Returns:
      Returns the rwlock.

    • clearWithLock

      public void clearWithLock()
      Convenience method which executes the like-named method from superclass ClassToInstanceMultiMap under a write lock.

    • containsKeyWithLock

      public boolean containsKeyWithLock​(@Nullable Class<?> key)
      Convenience method which executes the like-named method from superclass ClassToInstanceMultiMap under a read lock.
      Parameters:
      key - key to check for in the map
      Returns:
      true if the map contains a mapping for the specified key

    • containsValueWithLock

      public boolean containsValueWithLock​(@Nullable B value)
      Convenience method which executes the like-named method from superclass ClassToInstanceMultiMap under a read lock.
      Parameters:
      value - value to check for in this map
      Returns:
      true if the map contains a mapping to the specified value

    • getWithLock

      @Nonnull @NonnullElements @Unmodifiable @Live public <T> List<T> getWithLock​(@Nullable Class<T> type)
      Convenience method which executes the like-named method from superclass ClassToInstanceMultiMap under a read lock.
      Type Parameters:
      T - type identifier
      Parameters:
      type - map key
      Returns:
      instances mapped to the given type or an empty list

    • isEmptyWithLock

      public boolean isEmptyWithLock()
      Convenience method which executes the like-named method from superclass ClassToInstanceMultiMap under a read lock.
      Returns:
      true if this map contains no entries, false otherwise

    • keysWithLock

      @Nonnull @NonnullElements @Unmodifiable @Live public Set<Class<?>> keysWithLock()
      Convenience method which executes the like-named method from superclass ClassToInstanceMultiMap under a read lock.
      Returns:
      set of keys contained in this map

    • putWithLock

      public void putWithLock​(@Nonnull B value)
      Convenience method which executes the like-named method from superclass ClassToInstanceMultiMap under a write lock.
      Parameters:
      value - value to be stored in the map

    • putAllWithLock

      public void putAllWithLock​(@Nullable @NonnullElements ClassToInstanceMultiMap<? extends B> map)
      Convenience method which executes the like-named method from superclass ClassToInstanceMultiMap under a write lock.
      Parameters:
      map - map containing values to be added

    • putAllWithLock

      public void putAllWithLock​(@Nullable @NonnullElements Iterable<? extends B> newValues)
      Convenience method which executes the like-named method from superclass ClassToInstanceMultiMap under a write lock.
      Parameters:
      newValues - values to be added

    • removeWithLock

      public void removeWithLock​(@Nonnull B value)
      Convenience method which executes the like-named method from superclass ClassToInstanceMultiMap under a write lock.
      Parameters:
      value - the value to remove

    • removeWithLock

      public void removeWithLock​(@Nullable Class<?> type)
      Convenience method which executes the like-named method from superclass ClassToInstanceMultiMap under a write lock.
      Parameters:
      type - the type of values to remove

    • removeAllWithLock

      public void removeAllWithLock​(@Nullable @NonnullElements ClassToInstanceMultiMap<? extends B> map)
      Convenience method which executes the like-named method from superclass ClassToInstanceMultiMap under a write lock.
      Parameters:
      map - the map containing the values to remove

    • removeAllWithLock

      public void removeAllWithLock​(@Nullable @NonnullElements Iterable<? extends B> removeValues)
      Convenience method which executes the like-named method from superclass ClassToInstanceMultiMap under a write lock.
      Parameters:
      removeValues - the values to remove

    • valuesWithLock

      @Nonnull @NonnullElements @Unmodifiable @Live public Collection<? extends B> valuesWithLock()
      Convenience method which executes the like-named method from superclass ClassToInstanceMultiMap under a read lock.
      Returns:
      collection of values currently present in the map