org.jboss.logging.annotations.Signature Maven / Gradle / Ivy
/*
* JBoss, Home of Professional Open Source.
*
* Copyright 2016 Red Hat, Inc., and individual contributors
* as indicated by the @author tags.
*
* 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.jboss.logging.annotations;
import static java.lang.annotation.ElementType.METHOD;
import static java.lang.annotation.RetentionPolicy.CLASS;
import java.lang.annotation.Documented;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;
/**
* Specifies the exact signature to use when creating a {@link Throwable} return type.
*
*
* Given the following exception and message bundle interface method the {@code InvalidIntValueException(final RuntimeException cause, final String msg, final int value)}
* constructor would be used.
*
*
*
* public class InvalidIntValueException extends RuntimeException {
* private final RuntimeException causeAsRuntime;
* private final int value;
* public InvalidIntValueException(final Throwable cause, final String msg, final int value) {
* super(msg, cause);
* causeAsRuntime = new RuntimeException(cause);
* this.value = value;
* }
*
* public InvalidIntValueException(final RuntimeException cause, final String msg, final int value) {
* super(msg, cause);
* causeAsRuntime = cause;
* this.value = value;
* }
* public InvalidIntValueException(final RuntimeException cause, final String msg, final Integer value) {
* super(msg, cause);
* causeAsRuntime = cause;
* this.value = value;
* }
* }
*
*
*
*
*
* @Message("Invalid value %d")
* @Signature(causeIndex = 0, messageIndex = 1, value = {RuntimeException.class, String.class, int.class}
* InvalidIntValueException invalidValue(@Cause RuntimeException cause, @Param int value);
*
*
*
*
* @author James R. Perkins
*/
@Retention(CLASS)
@Target(METHOD)
@Documented
public @interface Signature {
/**
* An array of types matching the exact signature to use for the exception being created.
*
* @return an array of types used to find the signature
*/
Class[] value();
/**
* The index for the {@linkplain Cause cause} of the exception being created. A value of less than zero assumes
* there is no cause parameter in the constructor. A {@link Cause} annotation can still be used and the
* {@link Throwable#initCause(Throwable)} will be used to initialize the cause of the exception.
*
* @return the index for the cause parameter
*/
int causeIndex() default -1;
/**
* The index for the message. This is the formatted messaged from the {@link Message#value()}. This is a required
* value defaulting to 0 which would be the first parameter.
*
* @return the index for the message parameter
*/
int messageIndex() default 0;
}