jstorm-core/src/main/java/storm/trident/planner/processor/FreshCollector.java

/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package storm.trident.planner.processor;

import java.util.List;
import storm.trident.operation.TridentCollector;
import storm.trident.planner.ProcessorContext;
import storm.trident.planner.TupleReceiver;
import storm.trident.tuple.TridentTuple;
import storm.trident.tuple.TridentTuple.Factory;
import storm.trident.tuple.TridentTupleView.FreshOutputFactory;

public class FreshCollector implements TridentCollector {
    FreshOutputFactory _factory;
    TridentContext _triContext;
    ProcessorContext context;

    public FreshCollector(TridentContext context) {
        _triContext = context;
        _factory = new FreshOutputFactory(context.getSelfOutputFields());
    }

    public void setContext(ProcessorContext pc) {
        this.context = pc;
    }

    @Override
    public void emit(List<Object> values) {
        TridentTuple toEmit = _factory.create(values);
        for (TupleReceiver r : _triContext.getReceivers()) {
            r.execute(context, _triContext.getOutStreamId(), toEmit);
        }
    }

    @Override
    public void reportError(Throwable t) {
        _triContext.getDelegateCollector().reportError(t);
    }

    public Factory getOutputFactory() {
        return _factory;
    }
}