/
ForwardingAsyncResultSet.java
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/
ForwardingAsyncResultSet.java
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/*
* Copyright 2020 Google LLC
*
* 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 com.google.cloud.spanner;
import com.google.api.core.ApiFuture;
import com.google.common.base.Function;
import com.google.common.base.Preconditions;
import java.util.List;
import java.util.concurrent.Executor;
/** Forwarding implementation of {@link AsyncResultSet} that forwards all calls to a delegate. */
public class ForwardingAsyncResultSet extends ForwardingResultSet implements AsyncResultSet {
final AsyncResultSet delegate;
public ForwardingAsyncResultSet(AsyncResultSet delegate) {
super(Preconditions.checkNotNull(delegate));
this.delegate = delegate;
}
@Override
public CursorState tryNext() throws SpannerException {
return delegate.tryNext();
}
@Override
public ApiFuture<Void> setCallback(Executor exec, ReadyCallback cb) {
return delegate.setCallback(exec, cb);
}
@Override
public void cancel() {
delegate.cancel();
}
@Override
public void resume() {
delegate.resume();
}
@Override
public <T> ApiFuture<List<T>> toListAsync(
Function<StructReader, T> transformer, Executor executor) {
return delegate.toListAsync(transformer, executor);
}
@Override
public <T> List<T> toList(Function<StructReader, T> transformer) throws SpannerException {
return delegate.toList(transformer);
}
}