Package org.apache.jackrabbit.oak.plugins.document

Examples of org.apache.jackrabbit.oak.plugins.document.NodeDocument$Value

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        //Look up value from L2
        Map<CacheValue, NodeDocument> r2 = Maps.newHashMap(result);
        for (CacheValue key : list) {
            if (!result.containsKey(key)) {
                NodeDocument val = retrieve(key, false);
                if (val != null) {
                    r2.put(key, val);
                }
            }
        }
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    }

    @Nullable
    @Override
    public CachedNodeDocument getCachedDocument(String id) {
        NodeDocument doc = super.getIfPresent(id);
        if (doc != null) {
            return doc;
        }
        return offHeapCache.getIfPresent(id);
    }
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        if (value == null) {
            statsCounter.recordMisses(1);
            return null;
        }

        NodeDocument result = value.getDocument();
        if (result != null) {
            statsCounter.recordLoadSuccess(watch.elapsed(TimeUnit.NANOSECONDS));
        } else {
            statsCounter.recordMisses(1);
        }
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            }

            //If removed because of size then we move it to
            //L2
            if (n.getCause() == RemovalCause.SIZE) {
                NodeDocument doc = n.getValue();
                if (doc != NodeDocument.NULL) {
                    offHeapCache.put(n.getKey(),
                            new NodeDocReference(n.getKey(), doc));
                }
            }
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                //can lead to issues. For now synchronizing on the pointer
                synchronized (pointer) {
                    value = memoryManager.retrieve(pointer);
                }

                NodeDocument doc = serializer.deserialize(value, pointer.getClazz());
                doc.markUpToDate(getLastCheckTime());
                return doc;
            } catch (Exception e) {
                log.warn("Not able to deserialize doc {} with pointer {}", new Object[]{key, pointer, e});
            }
            return null;
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        @Override
        public NodeDocument read(Kryo kryo, Input input, Class<NodeDocument> nodeDocumentClass) {
            long created = input.readLong(true);

            int mapSize = input.readInt(true);
            NodeDocument doc = new NodeDocument(documentStore, created);
            for (int i = 0; i < mapSize; i++) {
                String key = input.readString();
                Registration reg = kryo.readClass(input);
                Object value;
                if (reg.getType() == NavigableMap.class) {
                    value = new RevisionedMapSerializer(kryo).read(kryo, input, Map.class);
                } else {
                    value = kryo.readObject(input, reg.getType());
                }
                doc.put(key, value);
            }

            //Seal the doc once all changes done
            doc.seal();

            return doc;
        }
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                                       int maxCacheAge) {
        if (collection != Collection.NODES) {
            return findUncached(collection, key);
        }
        CacheValue cacheKey = new StringValue(key);
        NodeDocument doc;
        if (maxCacheAge > 0) {
            // first try without lock
            doc = nodesCache.getIfPresent(cacheKey);
            if (doc != null) {
                if (maxCacheAge == Integer.MAX_VALUE ||
                        System.currentTimeMillis() - doc.getCreated() < maxCacheAge) {
                    if (doc == NodeDocument.NULL) {
                        return null;
                    }
                    return (T) doc;
                }
            }
        }
        try {
            Lock lock = getAndLock(key);
            try {
                if (maxCacheAge == 0) {
                    invalidateCache(collection, key);
                }
                while (true) {
                    doc = nodesCache.get(cacheKey, new Callable<NodeDocument>() {
                        @Override
                        public NodeDocument call() throws Exception {
                            NodeDocument doc = (NodeDocument) findUncached(collection, key);
                            if (doc == null) {
                                doc = NodeDocument.NULL;
                            }
                            return doc;
                        }
                    });
                    if (maxCacheAge == 0 || maxCacheAge == Integer.MAX_VALUE) {
                        break;
                    }
                    if (System.currentTimeMillis() - doc.getCreated() < maxCacheAge) {
                        break;
                    }
                    // too old: invalidate, try again
                    invalidateCache(collection, key);
                }
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                    Lock lock = getAndLock(id);
                    CacheValue cacheKey = new StringValue(id);
                    try {
                        // do not overwrite document in cache if the
                        // existing one in the cache is newer
                        NodeDocument cached = nodesCache.getIfPresent(cacheKey);
                        if (cached != null && cached != NodeDocument.NULL) {
                            // check mod count
                            Number cachedModCount = cached.getModCount();
                            Number modCount = doc.getModCount();
                            if (cachedModCount == null || modCount == null) {
                                throw new IllegalStateException(
                                        "Missing " + Document.MOD_COUNT);
                            }
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                                                   @Nullable T oldDoc,
                                                   @Nonnull UpdateOp updateOp) {
        // cache the new document
        if (collection == Collection.NODES) {
            CacheValue key = new StringValue(updateOp.getId());
            NodeDocument newDoc = (NodeDocument) collection.newDocument(this);
            if (oldDoc != null) {
                // we can only update the cache based on the oldDoc if we
                // still have the oldDoc in the cache, otherwise we may
                // update the cache with an outdated document
                NodeDocument cached = nodesCache.getIfPresent(key);
                if (cached == null) {
                    // cannot use oldDoc to update cache
                    return;
                }
                oldDoc.deepCopy(newDoc);
            }
            UpdateUtils.applyChanges(newDoc, updateOp, comparator);
            newDoc.seal();

            NodeDocument cached = addToCache(newDoc);
            if (cached == newDoc) {
                // successful
                return;
            }
            if (oldDoc == null) {
                // this is an insert and some other thread was quicker
                // loading it into the cache -> return now
                return;
            }
            // this is an update (oldDoc != null)
            if (Objects.equal(cached.getModCount(), oldDoc.getModCount())) {
                nodesCache.put(key, newDoc);
            } else {
                // the cache entry was modified by some other thread in
                // the meantime. the updated cache entry may or may not
                // include this update. we cannot just apply our update
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    public <T extends Document> T find(final Collection<T> collection, final String id, int maxCacheAge) {
        if (collection != Collection.NODES) {
            return readDocument(collection, id);
        } else {
            CacheValue cacheKey = new StringValue(id);
            NodeDocument doc;
            if (maxCacheAge > 0) {
                // first try without lock
                doc = nodesCache.getIfPresent(cacheKey);
                if (doc != null) {
                    if (maxCacheAge == Integer.MAX_VALUE || System.currentTimeMillis() - doc.getCreated() < maxCacheAge) {
                        return castAsT(unwrap(doc));
                    }
                }
            }
            try {
                Lock lock = getAndLock(id);
                try {
                    if (maxCacheAge == 0) {
                        invalidateCache(collection, id);
                    }
                    while (true) {
                        doc = nodesCache.get(cacheKey, new Callable<NodeDocument>() {
                            @Override
                            public NodeDocument call() throws Exception {
                                NodeDocument doc = (NodeDocument) readDocument(collection, id);
                                if (doc != null) {
                                    doc.seal();
                                }
                                return wrap(doc);
                            }
                        });
                        if (maxCacheAge == 0 || maxCacheAge == Integer.MAX_VALUE) {
                            break;
                        }
                        if (System.currentTimeMillis() - doc.getCreated() < maxCacheAge) {
                            break;
                        }
                        // too old: invalidate, try again
                        invalidateCache(collection, id);
                    }
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