public RollupTask parseRollupTask(JsonObject rollupTask, String context)
throws BeanValidationException, QueryException {
RollupTask task = m_gson.fromJson(rollupTask.getAsJsonObject(), RollupTask.class);
validateObject(task);
JsonArray rollups = rollupTask.getAsJsonObject().getAsJsonArray("rollups");
if (rollups != null) {
for (int j = 0; j < rollups.size(); j++) {
JsonObject rollupObject = rollups.get(j).getAsJsonObject();
Rollup rollup = m_gson.fromJson(rollupObject, Rollup.class);
context = context + "rollup[" + j + "]";
validateObject(rollup, context);
JsonObject queryObject = rollupObject.getAsJsonObject("query");
List<QueryMetric> queries = parseQueryMetric(queryObject, context);
for (int k = 0; k < queries.size(); k++) {
QueryMetric query = queries.get(k);
context += ".query[" + k + "]";
validateHasRangeAggregator(query, context);
// Add aggregators needed for rollups
SaveAsAggregator saveAsAggregator =
(SaveAsAggregator) m_aggregatorFactory.createAggregator("save_as");
saveAsAggregator.setMetricName(rollup.getSaveAs());
TrimAggregator trimAggregator =
(TrimAggregator) m_aggregatorFactory.createAggregator("trim");
trimAggregator.setTrim(TrimAggregator.Trim.LAST);
query.addAggregator(saveAsAggregator);
query.addAggregator(trimAggregator);
}
rollup.addQueries(queries);
task.addRollup(rollup);
}
}
return task;
}