1 /** 2 * Copyright (C) 2006 Google Inc. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.google.inject; 18 19 import static com.google.common.base.Preconditions.checkArgument; 20 21 import com.google.common.collect.ImmutableSet; 22 import com.google.inject.internal.Errors; 23 import com.google.inject.spi.Message; 24 25 import java.util.Collection; 26 27 /** 28 * Indicates that there was a runtime failure while providing an instance. 29 * 30 * @author kevinb@google.com (Kevin Bourrillion) 31 * @author jessewilson@google.com (Jesse Wilson) 32 * @since 2.0 33 */ 34 public final class ProvisionException extends RuntimeException { 35 36 private final ImmutableSet<Message> messages; 37 38 /** Creates a ProvisionException containing {@code messages}. */ ProvisionException(Iterable<Message> messages)39 public ProvisionException(Iterable<Message> messages) { 40 this.messages = ImmutableSet.copyOf(messages); 41 checkArgument(!this.messages.isEmpty()); 42 initCause(Errors.getOnlyCause(this.messages)); 43 } 44 ProvisionException(String message, Throwable cause)45 public ProvisionException(String message, Throwable cause) { 46 super(cause); 47 this.messages = ImmutableSet.of(new Message(message, cause)); 48 } 49 ProvisionException(String message)50 public ProvisionException(String message) { 51 this.messages = ImmutableSet.of(new Message(message)); 52 } 53 54 /** Returns messages for the errors that caused this exception. */ getErrorMessages()55 public Collection<Message> getErrorMessages() { 56 return messages; 57 } 58 getMessage()59 @Override public String getMessage() { 60 return Errors.format("Unable to provision, see the following errors", messages); 61 } 62 63 private static final long serialVersionUID = 0; 64 } 65