Method buildQueriesAsync

src/core/TSQuery.java:237–267

Compiles the TSQuery into an array of Query objects for execution. If the user has not set a down sampler explicitly, and they don't want millisecond resolution, then we set the down sampler to 1 second to handle situations where storage may have multiple data points per second. @param tsdb The tsdb

(final TSDB tsdb)

   * @since 2.2
   */
  public Deferred<Query[]> buildQueriesAsync(final TSDB tsdb) {
    final Query[] tsdb_queries = new Query[queries.size()];
    
    final List<Deferred<Object>> deferreds =
        new ArrayList<Deferred<Object>>(queries.size());
    for (int i = 0; i < queries.size(); i++) {
      Query query = tsdb.newQuery();
      Deferred<Object> resolution = query.configureFromQuery(this, i);

      if (query.needsSplitting() && (query instanceof TsdbQuery)) {
        query = new SplitRollupQuery(tsdb, (TsdbQuery) query, resolution);
        resolution = query.configureFromQuery(this, i);
      }
      deferreds.add(resolution);

      tsdb_queries[i] = query;
    }
    
    class GroupFinished implements Callback<Query[], ArrayList<Object>> {
      @Override
      public Query[] call(final ArrayList<Object> deferreds) {
        return tsdb_queries;
      }
      @Override
      public String toString() {
        return "Query compile group callback";
      }
    }
    
    return Deferred.group(deferreds).addCallback(new GroupFinished());
  }
  
  public String toString() {
    final StringBuilder buf = new StringBuilder();