Example usage for java.util.concurrent ConcurrentSkipListMap values

Introduction

In this page you can find the example usage for java.util.concurrent ConcurrentSkipListMap values.

Prototype

Values values

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Document

Lazily initialized values collection

Usage

From source file:com.doctor.other.concurrent_hash_map_based_table.ConcurrentHashMapBasedTable.java

public List<T> get(final String rowKey, final String columnKey) {
    Preconditions.checkState(StringUtils.isNotBlank(rowKey), "rowKey is blank");
    Preconditions.checkState(StringUtils.isNotBlank(columnKey), "columnKey is blank");

    ConcurrentHashMap<String, ConcurrentSkipListMap<String, ConcurrentSet<T>>> row = table.get(rowKey);
    if (row == null) {
        return Arrays.asList();
    }//from   ww w.j ava 2  s  .  c o m

    ConcurrentSkipListMap<String, ConcurrentSet<T>> column = row.get(columnKey);
    if (column == null) {
        return Arrays.asList();
    }

    return column.values().parallelStream().flatMap(v -> v.parallelStream()).collect(Collectors.toList());
}

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From source file:com.doctor.other.concurrent_hash_map_based_table.ConcurrentHashMapBasedTable.java

public Long getSumForRowColumnKey(final String rowKey, final String columnKey) {
    if (StringUtils.isBlank(rowKey) || StringUtils.isBlank(columnKey)) {
        return Long.valueOf(0L);
    }/*w ww . j  ava  2s . c o  m*/

    ConcurrentHashMap<String, ConcurrentSkipListMap<String, ConcurrentSet<T>>> row = table.get(rowKey);
    if (row == null) {
        return Long.valueOf(0L);
    }

    ConcurrentSkipListMap<String, ConcurrentSet<T>> column = row.get(columnKey);
    if (column == null) {
        return Long.valueOf(0L);
    }

    return column.values().parallelStream().mapToLong(k -> k.size()).sum();
}

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