Initial Jack import.

Change-Id: I953cf0a520195a7187d791b2885848ad0d5a9b43

1 files changed, 86 insertions, 0 deletions

diff --git a/guava/src/com/google/common/util/concurrent/ForwardingService.java b/guava/src/com/google/common/util/concurrent/ForwardingService.java
new file mode 100644
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+++ b/guava/src/com/google/common/util/concurrent/ForwardingService.java
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+/*
+ * Copyright (C) 2009 The Guava Authors
+ *
+ * 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.common.util.concurrent;
+
+import com.google.common.annotations.Beta;
+import com.google.common.collect.ForwardingObject;
+
+import java.util.concurrent.Executor;
+
+/**
+ * A {@link Service} that forwards all method calls to another service.
+ *
+ * @author Chris Nokleberg
+ * @since 1.0
+ */
+@Beta
+public abstract class ForwardingService extends ForwardingObject
+    implements Service {
+
+  /** Constructor for use by subclasses. */
+  protected ForwardingService() {}
+
+  @Override protected abstract Service delegate();
+
+  @Override public ListenableFuture<State> start() {
+    return delegate().start();
+  }
+
+  @Override public State state() {
+    return delegate().state();
+  }
+
+  @Override public ListenableFuture<State> stop() {
+    return delegate().stop();
+  }
+
+  @Override public State startAndWait() {
+    return delegate().startAndWait();
+  }
+
+  @Override public State stopAndWait() {
+    return delegate().stopAndWait();
+  }
+
+  @Override public boolean isRunning() {
+    return delegate().isRunning();
+  }
+
+  @Override public void addListener(Listener listener, Executor executor) {
+    delegate().addListener(listener, executor);
+  }
+
+  /**
+   * A sensible default implementation of {@link #startAndWait()}, in terms of
+   * {@link #start}. If you override {@link #start}, you may wish to override
+   * {@link #startAndWait()} to forward to this implementation.
+   * @since 9.0
+   */
+  protected State standardStartAndWait() {
+    return Futures.getUnchecked(start());
+  }
+
+  /**
+   * A sensible default implementation of {@link #stopAndWait()}, in terms of
+   * {@link #stop}. If you override {@link #stop}, you may wish to override
+   * {@link #stopAndWait()} to forward to this implementation.
+   * @since 9.0
+   */
+  protected State standardStopAndWait() {
+    return Futures.getUnchecked(stop());
+  }
+}