mirror of
https://github.com/google/nomulus.git
synced 2025-05-01 04:27:51 +02:00
5012893c1d
This change renames directories in preparation for the great package rename. The repository is now in a broken state because the code itself hasn't been updated. However this should ensure that git correctly preserves history for each file.
54 lines
1.6 KiB
Java
54 lines
1.6 KiB
Java
// Copyright 2016 The Domain Registry Authors. All Rights Reserved.
|
|
//
|
|
// 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.domain.registry.mapreduce.inputs;
|
|
|
|
import com.google.appengine.tools.mapreduce.Input;
|
|
import com.google.appengine.tools.mapreduce.InputReader;
|
|
import com.google.common.collect.ImmutableList;
|
|
|
|
import java.util.List;
|
|
import java.util.NoSuchElementException;
|
|
|
|
/** An input that returns a single {@code null} value. */
|
|
public class NullInput<T> extends Input<T> {
|
|
|
|
private static final long serialVersionUID = 1816836937031979851L;
|
|
|
|
private static final class NullReader<T> extends InputReader<T> {
|
|
|
|
private static final long serialVersionUID = -8176201363578913125L;
|
|
|
|
boolean read = false;
|
|
|
|
@Override
|
|
public T next() throws NoSuchElementException {
|
|
if (read) {
|
|
throw new NoSuchElementException();
|
|
}
|
|
read = true;
|
|
return null;
|
|
}
|
|
|
|
@Override
|
|
public Double getProgress() {
|
|
return read ? 1.0 : 0.0;
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public List<? extends InputReader<T>> createReaders() {
|
|
return ImmutableList.of(new NullReader<T>());
|
|
}
|
|
}
|