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// Copyright 2015-2019 SWIM.AI inc.
//
// Licensed 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 swim.api.downlink;

import swim.api.ref.SwimRef;
import swim.dataflow.RecordModel;
import swim.dataflow.Transmuter;
import swim.structure.Record;

final class DownlinkTransmuter extends Transmuter {
  final SwimRef swim;

  DownlinkTransmuter(SwimRef swim) {
    this.swim = swim;
  }

  @Override
  public Record transmute(RecordModel model) {
    if ("link".equals(model.tag())) {
      final DownlinkStreamlet streamlet = new DownlinkStreamlet(this.swim, model);
      streamlet.compile();
      return streamlet;
    }
    return model;
  }
}