Examples with TKeyValue org.apache.accumulo.core.dataImpl.thrift.TKeyValue used on opensource projects

Example 6 with TKeyValue

use of org.apache.accumulo.core.dataImpl.thrift.TKeyValue in project accumulo by apache.

the class Key method compress.

/**
 * Compresses a list of key/value pairs before sending them via thrift.
 *
 * @param param
 *          list of key/value pairs
 * @return list of Thrift key/value pairs
 */
public static List<TKeyValue> compress(List<? extends KeyValue> param) {
    List<TKeyValue> tkvl = Arrays.asList(new TKeyValue[param.size()]);
    if (!param.isEmpty())
        tkvl.set(0, new TKeyValue(param.get(0).getKey().toThrift(), ByteBuffer.wrap(param.get(0).getValue().get())));
    for (int i = param.size() - 1; i > 0; i--) {
        Key prevKey = param.get(i - 1).getKey();
        KeyValue kv = param.get(i);
        Key key = kv.getKey();
        TKey newKey = null;
        if (isEqual(prevKey.row, key.row)) {
            newKey = key.toThrift();
            newKey.row = null;
        }
        if (isEqual(prevKey.colFamily, key.colFamily)) {
            if (newKey == null)
                newKey = key.toThrift();
            newKey.colFamily = null;
        }
        if (isEqual(prevKey.colQualifier, key.colQualifier)) {
            if (newKey == null)
                newKey = key.toThrift();
            newKey.colQualifier = null;
        }
        if (isEqual(prevKey.colVisibility, key.colVisibility)) {
            if (newKey == null)
                newKey = key.toThrift();
            newKey.colVisibility = null;
        }
        if (newKey == null)
            newKey = key.toThrift();
        tkvl.set(i, new TKeyValue(newKey, ByteBuffer.wrap(kv.getValue().get())));
    }
    return tkvl;
}