Examples of org.codehaus.jackson.map.type.ClassKey

org.codehaus.jackson.map.type.ClassKey
Key class, used as an efficient and accurate key for locating per-class values, such as {@link org.codehaus.jackson.map.JsonSerializer}s.
The reason for having a separate key class instead of directly using {@link Class} as key is mostlyto allow for redefining hashCode method -- for some strange reason, {@link Class} does notredefine {@link Object#hashCode} and thus uses identityhash, which is pretty slow. This makes key access using {@link Class} unnecessarily slow.
Note: since class is not strictly immutable, caller must know what it is doing, if changing field values.

        }


        /* Ok: looks like we must weed out some core types here; ones that
         * make no sense to try to bind from JSON:
         */
        if (_untouchables.contains(new ClassKey(type))) {
            return false;
        }
        // but some are interface/abstract classes, so
        for (Class<?> cls : _unwritableClasses) {
            if (cls.isAssignableFrom(type)) {

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     */


    protected static boolean _containedIn(Class<?> mainType, HashSet<ClassKey> set)
    {
        if (set != null) {
            ClassKey key = new ClassKey(mainType);
            // First: type itself?
            if (set.contains(key)) return true;
            // Then supertypes (note: will not contain Object.class)
            for (Class<?> cls : ClassUtil.findSuperTypes(mainType, null)) {
                key.reset(cls);
                if (set.contains(key)) return true;
            }
        }
        return false;
    }

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    {
        HashMap<ClassKey,Class<?>> mixins = null;
        if (sourceMixins != null && sourceMixins.size() > 0) {
            mixins = new HashMap<ClassKey,Class<?>>(sourceMixins.size());
            for (Map.Entry<Class<?>,Class<?>> en : sourceMixins.entrySet()) {
                mixins.put(new ClassKey(en.getKey()), en.getValue());
            }
        }
        _mixInAnnotationsShared = false;
        _mixInAnnotations = mixins;
    }

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            _mixInAnnotations = new HashMap<ClassKey,Class<?>>();
        } else if (_mixInAnnotationsShared) {
            _mixInAnnotationsShared = false;
            _mixInAnnotations = new HashMap<ClassKey,Class<?>>(_mixInAnnotations);
        }
        _mixInAnnotations.put(new ClassKey(target), mixinSource);
    }

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     * 
     * @since 1.2
     */
    @Override
    public final Class<?> findMixInClassFor(Class<?> cls) {
        return (_mixInAnnotations == null) ? null : _mixInAnnotations.get(new ClassKey(cls));
    }

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    {  
        JsonDeserializer<Object> subDeser;


        // First: maybe we have already created sub-type deserializer?
        synchronized (this) {
            subDeser = (_subDeserializers == null) ? null : _subDeserializers.get(new ClassKey(bean.getClass()));
        }
        if (subDeser != null) {
            return subDeser;
        }
        // If not, maybe we can locate one. First, need provider
        DeserializerProvider deserProv = ctxt.getDeserializerProvider();
        if (deserProv != null) {
            JavaType type = ctxt.constructType(bean.getClass());
            /* 09-Dec-2010, tatu: Would be nice to know which property pointed to this
             *    bean... but, alas, no such information is retained, so:
             */
            subDeser = deserProv.findValueDeserializer(ctxt.getConfig(), type, _property);
            // Also, need to cache it
            if (subDeser != null) {
                synchronized (this) {
                    if (_subDeserializers == null) {
                        _subDeserializers = new HashMap<ClassKey,JsonDeserializer<Object>>();;
                    }
                    _subDeserializers.put(new ClassKey(bean.getClass()), subDeser);
                }            
            }
        }
        return subDeser;
    }

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        }


        /* Ok: looks like we must weed out some core types here; ones that
         * make no sense to try to bind from JSON:
         */
        if (_untouchables.contains(new ClassKey(type))) {
            return false;
        }
        // but some are interface/abstract classes, so
        for (Class<?> cls : _unreadableClasses) {
            if (cls.isAssignableFrom(type)) {

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        }


        /* Ok: looks like we must weed out some core types here; ones that
         * make no sense to try to bind from JSON:
         */
        if (_untouchables.contains(new ClassKey(type))) {
            return false;
        }
        // but some are interface/abstract classes, so
        for (Class<?> cls : _unwritableClasses) {
            if (cls.isAssignableFrom(type)) {

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    {  
        JsonDeserializer<Object> subDeser;


        // First: maybe we have already created sub-type deserializer?
        synchronized (this) {
            subDeser = (_subDeserializers == null) ? null : _subDeserializers.get(new ClassKey(bean.getClass()));
        }
        if (subDeser != null) {
            return subDeser;
        }
        // If not, maybe we can locate one. First, need provider
        DeserializerProvider deserProv = ctxt.getDeserializerProvider();
        if (deserProv != null) {
            JavaType type = TypeFactory.type(bean.getClass());
            subDeser = deserProv.findValueDeserializer(ctxt.getConfig(), type, null, "*this*");
            // Also, need to cache it
            if (subDeser != null) {
                synchronized (this) {
                    if (_subDeserializers == null) {
                        _subDeserializers = new HashMap<ClassKey,JsonDeserializer<Object>>();;
                    }
                    _subDeserializers.put(new ClassKey(bean.getClass()), subDeser);
                }            
            }
        }
        return subDeser;
    }

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    {
        HashMap<ClassKey,Class<?>> mixins = null;
        if (sourceMixins != null && sourceMixins.size() > 0) {
            mixins = new HashMap<ClassKey,Class<?>>(sourceMixins.size());
            for (Map.Entry<Class<?>,Class<?>> en : sourceMixins.entrySet()) {
                mixins.put(new ClassKey(en.getKey()), en.getValue());
            }
        }
        _mixInAnnotationsShared = false;
        _mixInAnnotations = mixins;
    }

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