1 files changed, 87 insertions, 0 deletions
diff --git a/bundles/org.eclipse.osgi.util/src/org/osgi/util/promise/FailedPromiseImpl.java b/bundles/org.eclipse.osgi.util/src/org/osgi/util/promise/FailedPromiseImpl.java
new file mode 100644
index 000000000..b2e757f45
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+++ b/bundles/org.eclipse.osgi.util/src/org/osgi/util/promise/FailedPromiseImpl.java
@@ -0,0 +1,87 @@
+/*
+ * Copyright (c) OSGi Alliance (2017). 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 org.osgi.util.promise;
+
+import static java.util.Objects.requireNonNull;
+
+import java.lang.reflect.InvocationTargetException;
+
+/**
+ * Failed Promise implementation.
+ * <p>
+ * This class is not used directly by clients. Clients should use
+ * {@link PromiseFactory#failed(Throwable)} to create a failed {@link Promise}.
+ * 
+ * @param <T> The result type associated with the Promise.
+ * @since 1.1
+ * @ThreadSafe
+ * @author $Id$
+ */
+final class FailedPromiseImpl<T> extends PromiseImpl<T> {
+	/**
+	 * The failure of this failed Promise.
+	 */
+	private final Throwable	fail;
+
+	/**
+	 * Initialize this failed Promise.
+	 * 
+	 * @param fail The failure of this failed Promise. Must not be {@code null}.
+	 * @param factory The factory to use for callbacks and scheduled operations.
+	 */
+	FailedPromiseImpl(Throwable fail, PromiseFactory factory) {
+		super(factory);
+		this.fail = requireNonNull(fail);
+	}
+
+	/**
+	 * {@inheritDoc}
+	 */
+	@Override
+	public boolean isDone() {
+		return true;
+	}
+
+	/**
+	 * {@inheritDoc}
+	 */
+	@Override
+	public T getValue() throws InvocationTargetException {
+		throw new InvocationTargetException(fail);
+	}
+
+	/**
+	 * {@inheritDoc}
+	 */
+	@Override
+	public Throwable getFailure() {
+		return fail;
+	}
+
+	/**
+	 * Return a holder of the result of this PromiseImpl.
+	 */
+	@Override
+	Result<T> collect() {
+		return new Result<T>(fail);
+	}
+
+	@Override
+	public String toString() {
+		return super.toString() + "[failed: " + fail + "]";
+	}
+}