1 /******************************************************************************* 2 * Copyright (c) 2010, 2014 Sonatype, Inc. 3 * All rights reserved. This program and the accompanying materials 4 * are made available under the terms of the Eclipse Public License v1.0 5 * which accompanies this distribution, and is available at 6 * http://www.eclipse.org/legal/epl-v10.html 7 * 8 * Contributors: 9 * Sonatype, Inc. - initial API and implementation 10 *******************************************************************************/ 11 package org.eclipse.aether.resolution; 12 13 import org.eclipse.aether.RepositoryException; 14 15 /** 16 * Thrown in case of an unreadable or unresolvable artifact descriptor. 17 */ 18 public class ArtifactDescriptorException 19 extends RepositoryException 20 { 21 22 private final transient ArtifactDescriptorResult result; 23 24 /** 25 * Creates a new exception with the specified result. 26 * 27 * @param result The descriptor result at the point the exception occurred, may be {@code null}. 28 */ 29 public ArtifactDescriptorException( ArtifactDescriptorResult result ) 30 { 31 super( "Failed to read artifact descriptor" 32 + ( result != null ? " for " + result.getRequest().getArtifact() : "" ), getCause( result ) ); 33 this.result = result; 34 } 35 36 /** 37 * Creates a new exception with the specified result and detail message. 38 * 39 * @param result The descriptor result at the point the exception occurred, may be {@code null}. 40 * @param message The detail message, may be {@code null}. 41 */ 42 public ArtifactDescriptorException( ArtifactDescriptorResult result, String message ) 43 { 44 super( message, getCause( result ) ); 45 this.result = result; 46 } 47 48 /** 49 * Creates a new exception with the specified result, detail message and cause. 50 * 51 * @param result The descriptor result at the point the exception occurred, may be {@code null}. 52 * @param message The detail message, may be {@code null}. 53 * @param cause The exception that caused this one, may be {@code null}. 54 */ 55 public ArtifactDescriptorException( ArtifactDescriptorResult result, String message, Throwable cause ) 56 { 57 super( message, cause ); 58 this.result = result; 59 } 60 61 /** 62 * Gets the descriptor result at the point the exception occurred. Despite being incomplete, callers might want to 63 * use this result to fail gracefully and continue their operation with whatever interim data has been gathered. 64 * 65 * @return The descriptor result or {@code null} if unknown. 66 */ 67 public ArtifactDescriptorResult getResult() 68 { 69 return result; 70 } 71 72 private static Throwable getCause( ArtifactDescriptorResult result ) 73 { 74 Throwable cause = null; 75 if ( result != null && !result.getExceptions().isEmpty() ) 76 { 77 cause = result.getExceptions().get( 0 ); 78 } 79 return cause; 80 } 81 82 }