Repository: maven-resolver Updated Branches: refs/heads/MNG-6007 [created] 8bd8c539d
http://git-wip-us.apache.org/repos/asf/maven-resolver/blob/3a1b8ae0/maven-resolver-api/src/main/java/org/eclipse/aether/resolution/VersionResolutionException.java ---------------------------------------------------------------------- diff --git a/maven-resolver-api/src/main/java/org/eclipse/aether/resolution/VersionResolutionException.java b/maven-resolver-api/src/main/java/org/eclipse/aether/resolution/VersionResolutionException.java new file mode 100644 index 0000000..1aca861 --- /dev/null +++ b/maven-resolver-api/src/main/java/org/eclipse/aether/resolution/VersionResolutionException.java @@ -0,0 +1,105 @@ +package org.eclipse.aether.resolution; + +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you 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. + */ + +import org.eclipse.aether.RepositoryException; + +/** + * Thrown in case of an unresolvable metaversion. + */ +public class VersionResolutionException + extends RepositoryException +{ + + private final transient VersionResult result; + + /** + * Creates a new exception with the specified result. + * + * @param result The version result at the point the exception occurred, may be {@code null}. + */ + public VersionResolutionException( VersionResult result ) + { + super( getMessage( result ), getCause( result ) ); + this.result = result; + } + + private static String getMessage( VersionResult result ) + { + StringBuilder buffer = new StringBuilder( 256 ); + buffer.append( "Failed to resolve version" ); + if ( result != null ) + { + buffer.append( " for " ).append( result.getRequest().getArtifact() ); + if ( !result.getExceptions().isEmpty() ) + { + buffer.append( ": " ).append( result.getExceptions().iterator().next().getMessage() ); + } + } + return buffer.toString(); + } + + private static Throwable getCause( VersionResult result ) + { + Throwable cause = null; + if ( result != null && !result.getExceptions().isEmpty() ) + { + cause = result.getExceptions().get( 0 ); + } + return cause; + } + + /** + * Creates a new exception with the specified result and detail message. + * + * @param result The version result at the point the exception occurred, may be {@code null}. + * @param message The detail message, may be {@code null}. + */ + public VersionResolutionException( VersionResult result, String message ) + { + super( message, getCause( result ) ); + this.result = result; + } + + /** + * Creates a new exception with the specified result, detail message and cause. + * + * @param result The version 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 VersionResolutionException( VersionResult result, String message, Throwable cause ) + { + super( message, cause ); + this.result = result; + } + + /** + * Gets the version 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 version result or {@code null} if unknown. + */ + public VersionResult getResult() + { + return result; + } + +}
