package org.webslinger.lang;

 public abstract class ConcurrentCache<K, V> extends AbstractConcurrentCache<K, V>{

     public static final ValueType HARD = ValueType.HARD;

     public static final ValueType SOFT = ValueType.SOFT;

     public static final ValueType WEAK = ValueType.WEAK;

     public ConcurrentCache(Class<?> owner, String field, String label) {

         this(owner, field, label, null, false);

     }

     public ConcurrentCache(Class<?> owner, String field, String label, boolean sorted) {

         this(owner, field, label, null, sorted);

     }

     public ConcurrentCache(Class<?> owner, String field, String label, AbstractConcurrentCache.ValueType valueType) {

         this(owner, field, label, valueType, false);

     }

     public ConcurrentCache(Class<?> owner, String field, String label, AbstractConcurrentCache.ValueType valueType, boolean sorted) {

         super(owner, field, label, valueType, sorted);

     }

     public V get(K key) throws Exception {

         return get(null, key);

     }

     public V get(K key, boolean create) throws Exception {

         return get(null, key, create);

     }

     protected V createValue(Object id, K key) throws Exception {

         return createValue(key);

     }

     protected abstract V createValue(K key) throws Exception;

     protected V findIfExists(Object id, K key) throws Exception {

         return findIfExists(key);

     }

     protected V findIfExists(K key) throws Exception {

         return null;

     }

 }