Package org.apache.catalina.util

Class ParameterMap<K,V>

java.lang.Object
org.apache.catalina.util.ParameterMap<K,V>
Type Parameters:
K - The type of Key
V - The type of Value
All Implemented Interfaces:
Serializable, Map<K,V>
public final class ParameterMap<K,V> extends Object implements Map<K,V>, Serializable
Implementation of java.util.Map that includes a locked property. This class can be used to safely expose Catalina internal parameter map objects to user classes without having to clone them in order to avoid modifications. When first created, a ParameterMap instance is not locked.
Author:
Craig R. McClanahan
See Also:

  • Constructor Details

    • ParameterMap

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

    • ParameterMap

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

    • ParameterMap

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

    • ParameterMap

      public ParameterMap(Map<K,V> map)
      Construct a new map with the same mappings as the given map.
      Parameters:
      map - Map whose contents are duplicated in the new map

  • Method Details

    • 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

    • clear

      public void clear()
      Specified by:
      clear in interface Map<K,V>
      Throws:
      IllegalStateException - if this map is currently locked

    • put

      public V put(K key, V value)
      Specified by:
      put in interface Map<K,V>
      Throws:
      IllegalStateException - if this map is currently locked

    • putAll

      public void putAll(Map<? extends K,? extends V> map)
      Specified by:
      putAll in interface Map<K,V>
      Throws:
      IllegalStateException - if this map is currently locked

    • remove

      public V remove(Object key)
      Specified by:
      remove in interface Map<K,V>
      Throws:
      IllegalStateException - if this map is currently locked

    • size

      public int size()
      Specified by:
      size in interface Map<K,V>

    • isEmpty

      public boolean isEmpty()
      Specified by:
      isEmpty in interface Map<K,V>

    • containsKey

      public boolean containsKey(Object key)
      Specified by:
      containsKey in interface Map<K,V>

    • containsValue

      public boolean containsValue(Object value)
      Specified by:
      containsValue in interface Map<K,V>

    • get

      public V get(Object key)
      Specified by:
      get in interface Map<K,V>

    • keySet

      public Set<K> keySet()

      Returns an unmodifiable Set view of the keys contained in this map if it is locked.

      Specified by:
      keySet in interface Map<K,V>

    • values

      public Collection<V> values()

      Returns an unmodifiable Collection view of the values contained in this map if it is locked.

      Specified by:
      values in interface Map<K,V>

    • entrySet

      public Set<Map.Entry<K,V>> entrySet()

      Returns an unmodifiable Set view of the mappings contained in this map if it is locked.

      Specified by:
      entrySet in interface Map<K,V>