+/*******************************************************************************
+ * Copyright (c) 2010, 2014 Sonatype, Inc.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ * Sonatype, Inc. - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.aether.resolution;
+
+import org.eclipse.aether.RepositoryException;
+
+/**
+ * Thrown in case of a unresolvable dependencies.
+ */
+public class DependencyResolutionException
+ extends RepositoryException
+{
+
+ private final transient DependencyResult result;
+
+ /**
+ * Creates a new exception with the specified result and cause.
+ *
+ * @param result The dependency result at the point the exception occurred, may be {@code null}.
+ * @param cause The exception that caused this one, may be {@code null}.
+ */
+ public DependencyResolutionException( DependencyResult result, Throwable cause )
+ {
+ super( getMessage( cause ), cause );
+ this.result = result;
+ }
+
+ /**
+ * Creates a new exception with the specified result, detail message and cause.
+ *
+ * @param result The dependency result at the point the exception occurred, may be {@code null}.
+ * @param message The detail message, may be {@code null}.
+ * @param cause The exception that caused this one, may be {@code null}.
+ */
+ public DependencyResolutionException( DependencyResult result, String message, Throwable cause )
+ {
+ super( message, cause );
+ this.result = result;
+ }
+
+ private static String getMessage( Throwable cause )
+ {
+ String msg = null;
+ if ( cause != null )
+ {
+ msg = cause.getMessage();
+ }
+ if ( msg == null || msg.length() <= 0 )
+ {
+ msg = "Could not resolve transitive dependencies";
+ }
+ return msg;
+ }
+
+ /**
+ * Gets the dependency result at the point the exception occurred. Despite being incomplete, callers might want to
+ * use this result to fail gracefully and continue their operation with whatever interim data has been gathered.
+ *
+ * @return The dependency result or {@code null} if unknown.
+ */
+ public DependencyResult getResult()
+ {
+ return result;
+ }
+
+}