import com.datatorrent.api.DefaultInputPort; //导入依赖的package包/类
/**
 * This is a utility method which is used to attach the output port of an {@link EmbeddableQueryInfoProvider} to the input port
 * of the encapsulating {@link AppData.Store}.
 * @param <T> The type of data emitted by the {@link EmbeddableQueryInfoProvider}'s output port and received by the
 * {@link AppData.Store}'s input port.
 * @param outputPort The output port of the {@link EmbeddableQueryInfoProvider} which is being used by an {@link AppData.Store}.
 * @param inputPort The input port of the {@link AppData.Store} which is using an {@link EmbeddableQueryInfoProvider}.
 */
public static <T> void attachOutputPortToInputPort(DefaultOutputPort<T> outputPort, final DefaultInputPort<T> inputPort)
{
  outputPort.setSink(new Sink<Object>()
  {
    @Override
    @SuppressWarnings("unchecked")
    public void put(Object tuple)
    {
      LOG.debug("processing tuple");
      inputPort.process((T)tuple);
    }

    @Override
    public int getCount(boolean reset)
    {
      return 0;
    }

  });
}
 

import com.datatorrent.api.DefaultInputPort; //导入依赖的package包/类
public void setInput(DefaultInputPort input)
{
  this.input = input;
}