Examples with ProjectionFactory org.apache.storm.trident.tuple.TridentTupleView.ProjectionFactory used on opensource projects

Example 11 with ProjectionFactory

use of org.apache.storm.trident.tuple.TridentTupleView.ProjectionFactory in project storm by apache.

the class ProjectedProcessor method prepare.

@Override
public void prepare(Map conf, TopologyContext context, TridentContext tridentContext) {
    if (tridentContext.getParentTupleFactories().size() != 1) {
        throw new RuntimeException("Projection processor can only have one parent");
    }
    _context = tridentContext;
    _factory = new ProjectionFactory(tridentContext.getParentTupleFactories().get(0), _projectFields);
}

Example 12 with ProjectionFactory

use of org.apache.storm.trident.tuple.TridentTupleView.ProjectionFactory in project storm by apache.

the class StateQueryProcessor method prepare.

@Override
public void prepare(Map<String, Object> conf, TopologyContext context, TridentContext tridentContext) {
    List<Factory> parents = tridentContext.getParentTupleFactories();
    if (parents.size() != 1) {
        throw new RuntimeException("State query operation can only have one parent");
    }
    this.context = tridentContext;
    state = (State) context.getTaskData(stateId);
    projection = new ProjectionFactory(parents.get(0), inputFields);
    collector = new AppendCollector(tridentContext);
    function.prepare(conf, new TridentOperationContext(context, projection));
}

Example 13 with ProjectionFactory

use of org.apache.storm.trident.tuple.TridentTupleView.ProjectionFactory in project storm by apache.

the class GroupedMultiReducerExecutor method execute.

@Override
public void execute(Map<TridentTuple, Object> state, int streamIndex, TridentTuple full, TridentCollector collector) {
    ProjectionFactory groupFactory = groupFactories.get(streamIndex);
    ProjectionFactory inputFactory = inputFactories.get(streamIndex);
    TridentTuple group = groupFactory.create(full);
    TridentTuple input = inputFactory.create(full);
    Object curr;
    if (!state.containsKey(group)) {
        curr = reducer.init(collector, group);
        state.put(group, curr);
    } else {
        curr = state.get(group);
    }
    reducer.execute(curr, streamIndex, group, input, collector);
}