Example usage for com.google.common.cache LoadingCache put

Introduction

In this page you can find the example usage for com.google.common.cache LoadingCache put.

Prototype

void put(K key, V value);

Source Link

Document

Associates value with key in this cache.

Usage

From source file:com.palantir.atlasdb.shell.AtlasShellConnection.java

public static AtlasShellConnection createAtlasShellConnection(final AtlasContext atlasContext) {
    LoadingCache<String, TableMetadata> metadataCache = CacheBuilder.newBuilder()
            .build(new CacheLoader<String, TableMetadata>() {
                @Override//from w w  w  .  jav  a  2 s .c  om
                public TableMetadata load(String tableName) throws Exception {
                    byte[] metadataBytes = atlasContext.getKeyValueService().getMetadataForTable(tableName);
                    if (metadataBytes == null || metadataBytes.length == 0) {
                        return new TableMetadata();
                    }
                    return TableMetadata.BYTES_HYDRATOR.hydrateFromBytes(metadataBytes);
                }
            });
    for (Entry<String, byte[]> e : atlasContext.getKeyValueService().getMetadataForTables().entrySet()) {
        if (e.getValue() == null || e.getValue().length == 0) {
            metadataCache.put(e.getKey(), new TableMetadata());
        } else {
            metadataCache.put(e.getKey(), TableMetadata.BYTES_HYDRATOR.hydrateFromBytes(e.getValue()));
        }
    }
    return new AtlasShellConnection(atlasContext.getKeyValueService(), atlasContext.getTransactionManager(),
            metadataCache);
}

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From source file:name.martingeisse.sql.cache.RowCacheGroup.java

/**
 * //from ww  w . j  a  v a  2 s  .c  o m
 */
@SuppressWarnings({ "unchecked", "rawtypes" })
private void distributeHelper(Wrapper wrapper, Function valueToKeyMapping, LoadingCache cache) {
    Object key = valueToKeyMapping.apply(wrapper.getValue());
    if (key != null) {
        cache.put(key, wrapper);
    }
}

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From source file:org.apache.rocketmq.console.task.DashboardCollectTask.java

private void writeFile(LoadingCache<String, List<String>> map, Map<String, List<String>> fileMap, File file)
        throws IOException {
    Map<String, List<String>> newMap = map.asMap();
    Map<String, List<String>> resultMap = Maps.newHashMap();
    if (fileMap.size() == 0) {
        resultMap = newMap;//ww w .j  a v a2 s .c o  m
    } else {
        for (Map.Entry<String, List<String>> entry : fileMap.entrySet()) {
            List<String> oldList = entry.getValue();
            List<String> newList = newMap.get(entry.getKey());
            resultMap.put(entry.getKey(), appendData(newList, oldList));
            if (newList == null || newList.size() == 0) {
                map.put(entry.getKey(), appendData(newList, oldList));
            }
        }

        for (Map.Entry<String, List<String>> entry : newMap.entrySet()) {
            List<String> oldList = fileMap.get(entry.getKey());
            if (oldList == null || oldList.size() == 0) {
                resultMap.put(entry.getKey(), entry.getValue());
            }
        }
    }
    Files.write(JsonUtil.obj2String(resultMap).getBytes(), file);
}

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