Examples with DataNode org.apache.zookeeper_voltpatches.server.DataNode used on opensource projects

Example 16 with DataNode

use of org.apache.zookeeper_voltpatches.server.DataNode in project voltdb by VoltDB.

the class DataTree method serializeNode.

/**
     * this method uses a stringbuilder to create a new path for children. This
     * is faster than string appends ( str1 + str2).
     *
     * @param oa
     *            OutputArchive to write to.
     * @param path
     *            a string builder.
     * @throws IOException
     * @throws InterruptedException
     */
void serializeNode(OutputArchive oa, StringBuilder path) throws IOException {
    String pathString = path.toString();
    DataNode node = getNode(pathString);
    if (node == null) {
        return;
    }
    String[] children = null;
    synchronized (node) {
        scount++;
        oa.writeString(pathString, "path");
        oa.writeRecord(node, "node");
        Set<String> childs = node.getChildren();
        if (childs != null) {
            children = childs.toArray(new String[childs.size()]);
        }
    }
    path.append('/');
    int off = path.length();
    if (children != null) {
        for (String child : children) {
            // since this is single buffer being resused
            // we need
            // to truncate the previous bytes of string.
            path.delete(off, Integer.MAX_VALUE);
            path.append(child);
            serializeNode(oa, path);
        }
    }
}