nl.topicus.jdbc.shaded.com.google.api.gax.rpc.PagedCallable Maven / Gradle / Ivy

/*
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 * modification, are permitted provided that the following conditions are
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 *
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 * notice, this list of conditions and the following disclaimer.
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 * in the documentation and/or other materials provided with the
 * distribution.
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 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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package nl.topicus.jdbc.shaded.com.google.api.gax.rpc;

import nl.topicus.jdbc.shaded.com.google.api.core.ApiFuture;
import nl.topicus.jdbc.shaded.com.google.api.core.InternalApi;
import nl.topicus.jdbc.shaded.com.google.common.base.Preconditions;

/**
 * A UnaryCallable which provides page streaming functionality for unary calls.
 *
 * Public for technical reasons - for advanced usage.
 */
@InternalApi("For use by transport-specific implementations")
public class PagedCallable
    extends UnaryCallable {
  private final UnaryCallable callable;
  private final PagedListResponseFactory
      pagedListResponseFactory;

  public PagedCallable(
      UnaryCallable callable,
      PagedListResponseFactory pagedListResponseFactory) {
    this.callable = Preconditions.checkNotNull(callable);
    this.pagedListResponseFactory = pagedListResponseFactory;
  }

  @Override
  public String toString() {
    return String.format("paged(%s)", callable);
  }

  @Override
  public ApiFuture futureCall(RequestT request, ApiCallContext context) {
    ApiFuture futureResponse = callable.futureCall(request, context);
    return pagedListResponseFactory.getFuturePagedResponse(
        callable.withDefaultCallContext(context), request, context, futureResponse);
  }
}