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Diffstat (limited to 'src/main/java/com/android/volley/toolbox/RequestFuture.java')
-rw-r--r--src/main/java/com/android/volley/toolbox/RequestFuture.java159
1 files changed, 0 insertions, 159 deletions
diff --git a/src/main/java/com/android/volley/toolbox/RequestFuture.java b/src/main/java/com/android/volley/toolbox/RequestFuture.java
deleted file mode 100644
index f9cbce2..0000000
--- a/src/main/java/com/android/volley/toolbox/RequestFuture.java
+++ /dev/null
@@ -1,159 +0,0 @@
-/*
- * Copyright (C) 2011 The Android Open Source Project
- *
- * 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.android.volley.toolbox;
-
-import android.os.SystemClock;
-import com.android.volley.Request;
-import com.android.volley.Response;
-import com.android.volley.VolleyError;
-import java.util.concurrent.ExecutionException;
-import java.util.concurrent.Future;
-import java.util.concurrent.TimeUnit;
-import java.util.concurrent.TimeoutException;
-
-/**
- * A Future that represents a Volley request.
- *
- * <p>Used by providing as your response and error listeners. For example:
- *
- * <pre>
- * RequestFuture&lt;JSONObject&gt; future = RequestFuture.newFuture();
- * MyRequest request = new MyRequest(URL, future, future);
- *
- * // If you want to be able to cancel the request:
- * future.setRequest(requestQueue.add(request));
- *
- * // Otherwise:
- * requestQueue.add(request);
- *
- * try {
- * JSONObject response = future.get();
- * // do something with response
- * } catch (InterruptedException e) {
- * // handle the error
- * } catch (ExecutionException e) {
- * // handle the error
- * }
- * </pre>
- *
- * @param <T> The type of parsed response this future expects.
- */
-public class RequestFuture<T> implements Future<T>, Response.Listener<T>, Response.ErrorListener {
- private Request<?> mRequest;
- private boolean mResultReceived = false;
- private T mResult;
- private VolleyError mException;
-
- public static <E> RequestFuture<E> newFuture() {
- return new RequestFuture<>();
- }
-
- private RequestFuture() {}
-
- public void setRequest(Request<?> request) {
- mRequest = request;
- }
-
- @Override
- public synchronized boolean cancel(boolean mayInterruptIfRunning) {
- if (mRequest == null) {
- return false;
- }
-
- if (!isDone()) {
- mRequest.cancel();
- return true;
- } else {
- return false;
- }
- }
-
- @Override
- public T get() throws InterruptedException, ExecutionException {
- try {
- return doGet(/* timeoutMs= */ null);
- } catch (TimeoutException e) {
- throw new AssertionError(e);
- }
- }
-
- @Override
- public T get(long timeout, TimeUnit unit)
- throws InterruptedException, ExecutionException, TimeoutException {
- return doGet(TimeUnit.MILLISECONDS.convert(timeout, unit));
- }
-
- private synchronized T doGet(Long timeoutMs)
- throws InterruptedException, ExecutionException, TimeoutException {
- if (mException != null) {
- throw new ExecutionException(mException);
- }
-
- if (mResultReceived) {
- return mResult;
- }
-
- if (timeoutMs == null) {
- while (!isDone()) {
- wait(0);
- }
- } else if (timeoutMs > 0) {
- long nowMs = SystemClock.uptimeMillis();
- long deadlineMs = nowMs + timeoutMs;
- while (!isDone() && nowMs < deadlineMs) {
- wait(deadlineMs - nowMs);
- nowMs = SystemClock.uptimeMillis();
- }
- }
-
- if (mException != null) {
- throw new ExecutionException(mException);
- }
-
- if (!mResultReceived) {
- throw new TimeoutException();
- }
-
- return mResult;
- }
-
- @Override
- public boolean isCancelled() {
- if (mRequest == null) {
- return false;
- }
- return mRequest.isCanceled();
- }
-
- @Override
- public synchronized boolean isDone() {
- return mResultReceived || mException != null || isCancelled();
- }
-
- @Override
- public synchronized void onResponse(T response) {
- mResultReceived = true;
- mResult = response;
- notifyAll();
- }
-
- @Override
- public synchronized void onErrorResponse(VolleyError error) {
- mException = error;
- notifyAll();
- }
-}