Java Long2LongMap类代码示例

import it.unimi.dsi.fastutil.longs.Long2LongMap; //导入依赖的package包/类
private int pickUpSampling(long seconds, long start, int last, Long2LongMap buckets) {
    if (seconds < start) {
        return 1;
    }
    long sample = 0;
    for (Long2LongMap.Entry e : buckets.long2LongEntrySet()) {
        if (seconds < e.getLongKey()) {
            sample = e.getLongValue();
            break;
        }
    }
    if (sample == 0) {
        return last;
    }
    return (int) sample;
}
 

import it.unimi.dsi.fastutil.longs.Long2LongMap; //导入依赖的package包/类
private long computeNewLabel(Node node) {
	// Count the frequency of labels at neighbours of the current node
	labelCounts.clear();
	labelCounts.defaultReturnValue(0L);
	for (Relationship relationship : node.getRelationships(EDGE, Direction.BOTH)) {
		long otherLabel = labels.get(relationship.getOtherNode(node));
		labelCounts.put(otherLabel, labelCounts.get(otherLabel) + 1);
	}

	// Find the most frequent label with the lowest id
	long bestLabel = labels.get(node);
	long bestFrequency = 0;
	for (Long2LongMap.Entry labelFrequencyPair : labelCounts.long2LongEntrySet()) {
		long nextLabel = labelFrequencyPair.getLongKey();
		long nextFrequency = labelFrequencyPair.getLongValue();
		if (nextFrequency > bestFrequency) {
			bestLabel = nextLabel;
			bestFrequency = nextFrequency;
		} else if (nextFrequency == bestFrequency && nextLabel < bestLabel) {
			bestLabel = nextLabel;
		}
	}
	return bestLabel;
}
 

import it.unimi.dsi.fastutil.longs.Long2LongMap; //导入依赖的package包/类
protected long getMostFrequentLabel(Node node) {
	Long2LongMap commMap = new Long2LongOpenHashMap();
       Iterable<Relationship> relationships = relType == null ? node.getRelationships() : node.getRelationships(relType);

       for (Relationship r : relationships) {
           Node other = r.getOtherNode(node);
		long otherCommunity = (long) other.getProperty(attName);
		// commMap.put(other.getId(), otherCommunity);	WRONG
		long count = commMap.getOrDefault(otherCommunity, 0L);
		commMap.put(otherCommunity, count+1);
	}

	long mostFrequentLabel = -1;
	long mostFrequentLabelCount = -1;
	for( Entry<Long, Long> e : commMap.entrySet() ) {
		if( e.getValue() > mostFrequentLabelCount ) {
			mostFrequentLabelCount = e.getValue();
			mostFrequentLabel = e.getKey();
		}
	}
	return mostFrequentLabel;
}
 

import it.unimi.dsi.fastutil.longs.Long2LongMap; //导入依赖的package包/类
@Override
public boolean contains(long address) {
    if (indexedMemoryAccessChecker != null) {
        int result = indexedMemoryAccessChecker.isAllocated(address);
        if (result == IndexedMemoryAccessChecker.ALLOCATED) {
            return true;
        } else if (result == IndexedMemoryAccessChecker.NOT_ALLOCATED) {
            return false;
        }
        // Not indexed, so check over allocated memories
    }
    Long2LongMap.Entry entry = allocatedMemories.tailMap(address).long2LongEntrySet().first();
    if (entry == null) {
        return false;
    }
    long startAddress = entry.getLongKey();
    long endAddress = startAddress + entry.getLongValue();
    return address >= startAddress && address <= endAddress;
}
 

import it.unimi.dsi.fastutil.longs.Long2LongMap; //导入依赖的package包/类
@Override
public void uploadGraph(Graph graph) throws Exception {
	LOG.info("Importing graph \"{}\" into a Neo4j database", graph.getName());

	String databasePath = Paths.get(dbPath, graph.getName()).toString();

	InputStream propertiesStream = getClass().getResourceAsStream(PROPERTIES_PATH);
	Map<String, String> properties = MapUtil.load(propertiesStream);
	BatchInserter inserter = BatchInserters.inserter(databasePath, properties);

	LOG.debug("- Inserting vertices");

	Long2LongMap vertexIdMap = new Long2LongOpenHashMap((int)graph.getNumberOfVertices());
	try (BufferedReader vertexData = new BufferedReader(new FileReader(graph.getVertexFilePath()))) {
		Map<String, Object> propertiesCache = new HashMap<>(1, 1.0f);
		for (String vertexLine = vertexData.readLine(); vertexLine != null; vertexLine = vertexData.readLine()) {
			if (vertexLine.isEmpty()) {
				continue;
			}

			long vertexId = Long.parseLong(vertexLine);
			propertiesCache.put(ID_PROPERTY, vertexId);
			long internalVertexId = inserter.createNode(propertiesCache, (Label)Vertex);
			vertexIdMap.put(vertexId, internalVertexId);
		}
	}

	LOG.debug("- Inserting edges");

	try (BufferedReader edgeData = new BufferedReader(new FileReader(graph.getEdgeFilePath()))) {
		for (String edgeLine = edgeData.readLine(); edgeLine != null; edgeLine = edgeData.readLine()) {
			if (edgeLine.isEmpty()) {
				continue;
			}

			String[] edgeLineChunks = edgeLine.split(" ");
			if (edgeLineChunks.length != 2) {
				throw new IOException("Invalid data found in edge list: \"" + edgeLine + "\"");
			}

			inserter.createRelationship(vertexIdMap.get(Long.parseLong(edgeLineChunks[0])),
					vertexIdMap.get(Long.parseLong(edgeLineChunks[1])), EDGE, null);
		}
	}

	inserter.createDeferredSchemaIndex(Vertex).on(ID_PROPERTY).create();

	inserter.shutdown();

	LOG.debug("- Graph \"{}\" imported successfully", graph.getName());
}
 

import it.unimi.dsi.fastutil.longs.Long2LongMap; //导入依赖的package包/类
@Override
public Coder getCoder(final Long2LongMap frequencies) {
	assert Longs.min(frequencies.values().toLongArray()) > 0;
	return new Coder(Fast.length(Longs.max(frequencies.keySet().toLongArray())));
}
 

import it.unimi.dsi.fastutil.longs.Long2LongMap; //导入依赖的package包/类
public Long2LongMap getResult() {
	return this.componentsMap;
}
 

import it.unimi.dsi.fastutil.longs.Long2LongMap; //导入依赖的package包/类
public Long2LongMap getNode2CommunityMap() {
    return node2CommunityMap;
}
 

import it.unimi.dsi.fastutil.longs.Long2LongMap; //导入依赖的package包/类
@Override
public Long2LongMap getResult() {
    return lp.getResult();
}
 

import it.unimi.dsi.fastutil.longs.Long2LongMap; //导入依赖的package包/类
@Override
public Long2LongMap getResult() {
	return communityMap;
}
 

import it.unimi.dsi.fastutil.longs.Long2LongMap; //导入依赖的package包/类
@Override
public Long2LongMap getResult() {
    return this.triangleMap;
}