Examples with MDSKey io.cdap.cdap.data2.dataset2.lib.table.MDSKey used on opensource projects

Example 96 with MDSKey

use of io.cdap.cdap.data2.dataset2.lib.table.MDSKey in project cdap by caskdata.

the class MetadataKey method extractMetadataKey.

static String extractMetadataKey(byte[] rowKey) {
    MDSKey.Splitter keySplitter = new MDSKey(rowKey).split();
    // The rowkey is
    // [rowPrefix][targetType][targetId][key] for value rows and
    // [rowPrefix][targetType][targetId][key][index] for value index rows
    // Skip rowPrefix
    keySplitter.skipBytes();
    // Skip targetType
    keySplitter.skipString();
    // targetId are key-value par so always in set of two. For value row we will end up with only string in end ([key])
    // and for index row we will have two strings in end ([key][index]).
    String key = null;
    while (keySplitter.hasRemaining()) {
        key = keySplitter.getString();
        if (keySplitter.hasRemaining()) {
            keySplitter.skipString();
        } else {
            break;
        }
    }
    return key;
}

Example 97 with MDSKey

use of io.cdap.cdap.data2.dataset2.lib.table.MDSKey in project cdap by caskdata.

the class MetadataKey method extractMetadataEntityFromKey.

static MetadataEntity extractMetadataEntityFromKey(byte[] rowKey) {
    MDSKey.Splitter keySplitter = new MDSKey(rowKey).split();
    // The rowkey is
    // [rowPrefix][targetType][targetId][key] for value rows and
    // [rowPrefix][targetType][targetId][key][index] for value index rows
    // so skip the first
    keySplitter.skipBytes();
    return getTargetIdIdFromKey(keySplitter);
}