Examples of org.apache.commons.collections4.map.ReferenceIdentityMap

Package org.apache.commons.collections4.map

Examples of org.apache.commons.collections4.map.ReferenceIdentityMap

org.apache.commons.collections4.trie.analyzer.StringKeyAnalyzer
A Map implementation that allows mappings to be removed by the garbage collector and matches keys and values based on == not equals().

When you construct a ReferenceIdentityMap, you can specify what kind of references are used to store the map's keys and values. If non-hard references are used, then the garbage collector can remove mappings if a key or value becomes unreachable, or if the JVM's memory is running low. For information on how the different reference types behave, see {@link Reference}.
Different types of references can be specified for keys and values. The default constructor uses hard keys and soft values, providing a memory-sensitive cache.
This map is similar to {@link org.apache.commons.collections4.map.ReferenceMap ReferenceMap}. It differs in that keys and values in this class are compared using ==.
This map will violate the detail of various Map and map view contracts. As a general rule, don't compare this map to other maps.
This {@link java.util.Map Map} implementation does not allow null elements.Attempting to add a null key or value to the map will raise a NullPointerException.
This implementation is not synchronized. You can use {@link java.util.Collections#synchronizedMap} toprovide synchronized access to a ReferenceIdentityMap. Remember that synchronization will not stop the garbage collector removing entries.
All the available iterators can be reset back to the start by casting to ResettableIterator and calling reset().
Note that ReferenceIdentityMap is not synchronized and is not thread-safe. If you wish to use this map from multiple threads concurrently, you must use appropriate synchronization. The simplest approach is to wrap this map using {@link java.util.Collections#synchronizedMap}. This class may throw exceptions when accessed by concurrent threads without synchronization. @see java.lang.ref.Reference @since 3.0 (previously in main package v2.1) @version $Id: ReferenceIdentityMap.java 1477799 2013-04-30 19:56:11Z tn $

        }
        if (obj instanceof Map) {
            return ((Map<?, ?>) obj).values().iterator();
        }
        if (obj instanceof NodeList) {
            return new NodeListIterator((NodeList) obj);
        }
        if (obj instanceof Node) {
            return new NodeListIterator((Node) obj);
        }
        if (obj instanceof Dictionary) {
            return new EnumerationIterator<Object>(((Dictionary<?, ?>) obj).elements());
        } else if (obj.getClass().isArray()) {
            return new ArrayIterator<Object>(obj);

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        m.put("d", "4");
        return m;
    }


    private Map makeEmptyMap() {
        return new MultiValueMap();
    }

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public class PatriciaTrie<E> extends AbstractPatriciaTrie<String, E> implements Trie<String, E> {


    private static final long serialVersionUID = 4446367780901817838L;


    public PatriciaTrie() {
        super(new StringKeyAnalyzer());
    }

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    public PatriciaTrie() {
        super(new StringKeyAnalyzer());
    }


    public PatriciaTrie(final Map<? extends String, ? extends E> m) {
        super(new StringKeyAnalyzer(), m);
    }

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public class PatriciaTrie<E> extends AbstractPatriciaTrie<String, E> {


    private static final long serialVersionUID = 4446367780901817838L;


    public PatriciaTrie() {
        super(new StringKeyAnalyzer());
    }

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    public PatriciaTrie() {
        super(new StringKeyAnalyzer());
    }


    public PatriciaTrie(final Map<? extends String, ? extends E> m) {
        super(new StringKeyAnalyzer(), m);
    }

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public class PatriciaTrie<E> extends AbstractPatriciaTrie<String, E> {


    private static final long serialVersionUID = 4446367780901817838L;


    public PatriciaTrie() {
        super(new StringKeyAnalyzer());
    }

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    public PatriciaTrie() {
        super(new StringKeyAnalyzer());
    }


    public PatriciaTrie(final Map<? extends String, ? extends E> m) {
        super(new StringKeyAnalyzer(), m);
    }

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