Examples of org.apache.ojb.broker.util.ReferenceMap

org.apache.ojb.broker.util.ReferenceMap

sun.com/j2se/1.4/docs/api/java/util/WeakHashMap.html"> WeakHashMap. However, you can also specify hard keys and weak values, or any other combination. The default constructor uses hard keys and soft values, providing a memory-sensitive cache.

The algorithms used are basically the same as those in {@link java.util.HashMap}. In particular, you can specify a load factor and capacity to suit your needs. All optional {@link java.util.Map} operations aresupported.

However, this {@link java.util.Map} implementation does notallow null elements. Attempting to add a null key or or a null value to the map will raise a NullPointerException.

As usual, this implementation is not synchronized. You can use {@link java.util.Collections#synchronizedMap} toprovide synchronized access to a ReferenceMap. @deprecated use {@link org.apache.commons.collections.map.ReferenceIdentityMap} instead. @author Andy Malakov @version $Id: ReferenceMap.java,v 1.6.2.2 2005/12/21 22:27:47 tomdz Exp $

    {
        super.setUp();
        /*
        todo: verify the constructors
        */
        referenceMap = new ReferenceMap(ReferenceMap.WEAK, ReferenceMap.HARD, 10, 0.75f, true);
    }

    {
        if (key != null)
        {
            if (fkCache == null)
            {
                fkCache = new ReferenceMap (ReferenceMap.WEAK, ReferenceMap.HARD, 10, 0.75f, true);
            }
            if (value != null)
                 fkCache.put(key, value);
             else
                 fkCache.remove (key);

Examples of org.apache.ojb.broker.util.ReferenceMap

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