Examples with Cell org.apache.cassandra.db.Cell used on opensource projects

Example 1 with Cell

use of org.apache.cassandra.db.Cell in project titan by thinkaurelius.

the class CassandraBinaryRecordReader method completeNextKV.

private KV completeNextKV() throws IOException {
    KV completedKV = null;
    boolean hasNext;
    do {
        hasNext = reader.nextKeyValue();
        if (!hasNext) {
            completedKV = incompleteKV;
            incompleteKV = null;
        } else {
            StaticArrayBuffer key = StaticArrayBuffer.of(reader.getCurrentKey());
            SortedMap<ByteBuffer, Cell> valueSortedMap = reader.getCurrentValue();
            List<Entry> entries = new ArrayList<>(valueSortedMap.size());
            for (Map.Entry<ByteBuffer, Cell> ent : valueSortedMap.entrySet()) {
                ByteBuffer col = ent.getKey();
                ByteBuffer val = ent.getValue().value();
                entries.add(StaticArrayEntry.of(StaticArrayBuffer.of(col), StaticArrayBuffer.of(val)));
            }
            if (null == incompleteKV) {
                // Initialization; this should happen just once in an instance's lifetime
                incompleteKV = new KV(key);
            } else if (!incompleteKV.key.equals(key)) {
                // The underlying Cassandra reader has just changed to a key we haven't seen yet
                // This implies that there will be no more entries for the prior key
                completedKV = incompleteKV;
                incompleteKV = new KV(key);
            }
            incompleteKV.addEntries(entries);
        }
    /* Loop ends when either
             * A) the cassandra reader ran out of data
             * or
             * B) the cassandra reader switched keys, thereby completing a KV */
    } while (hasNext && null == completedKV);
    return completedKV;
}

Example 2 with Cell

use of org.apache.cassandra.db.Cell in project janusgraph by JanusGraph.

the class CassandraBinaryRecordReader method completeNextKV.

private KV completeNextKV() throws IOException {
    KV completedKV = null;
    boolean hasNext;
    do {
        hasNext = reader.nextKeyValue();
        if (!hasNext) {
            completedKV = incompleteKV;
            incompleteKV = null;
        } else {
            StaticArrayBuffer key = StaticArrayBuffer.of(reader.getCurrentKey());
            SortedMap<ByteBuffer, Cell> valueSortedMap = reader.getCurrentValue();
            List<Entry> entries = new ArrayList<>(valueSortedMap.size());
            for (Map.Entry<ByteBuffer, Cell> ent : valueSortedMap.entrySet()) {
                ByteBuffer col = ent.getKey();
                ByteBuffer val = ent.getValue().value();
                entries.add(StaticArrayEntry.of(StaticArrayBuffer.of(col), StaticArrayBuffer.of(val)));
            }
            if (null == incompleteKV) {
                // Initialization; this should happen just once in an instance's lifetime
                incompleteKV = new KV(key);
            } else if (!incompleteKV.key.equals(key)) {
                // The underlying Cassandra reader has just changed to a key we haven't seen yet
                // This implies that there will be no more entries for the prior key
                completedKV = incompleteKV;
                incompleteKV = new KV(key);
            }
            incompleteKV.addEntries(entries);
        }
    /* Loop ends when either
             * A) the cassandra reader ran out of data
             * or
             * B) the cassandra reader switched keys, thereby completing a KV */
    } while (hasNext && null == completedKV);
    return completedKV;
}