39 lines
1.3 KiB
Java
39 lines
1.3 KiB
Java
/*
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* Copyright (c) 2015-present, Parse, LLC.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*/
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package com.parse;
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import java.util.List;
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import bolts.Continuation;
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import bolts.Task;
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/**
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* {@code AbstractParseQueryController} is an abstract implementation of
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* {@link ParseQueryController}, which implements {@link ParseQueryController#getFirstAsync}.
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*/
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/** package */ abstract class AbstractQueryController implements ParseQueryController {
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@Override
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public <T extends ParseObject> Task<T> getFirstAsync(ParseQuery.State<T> state, ParseUser user,
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Task<Void> cancellationToken) {
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return findAsync(state, user, cancellationToken).continueWith(new Continuation<List<T>, T>() {
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@Override
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public T then(Task<List<T>> task) throws Exception {
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if (task.isFaulted()) {
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throw task.getError();
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}
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if (task.getResult() != null && task.getResult().size() > 0) {
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return task.getResult().get(0);
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}
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throw new ParseException(ParseException.OBJECT_NOT_FOUND, "no results found for query");
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}
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});
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}
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}
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