| /* |
| * Copyright 2001-2005 The Apache Software Foundation. |
| * |
| * 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.apache.logging.log4j.catalog.api.annotation; |
| |
| import org.springframework.context.annotation.Conditional; |
| |
| import java.lang.annotation.ElementType; |
| import java.lang.annotation.Retention; |
| import java.lang.annotation.RetentionPolicy; |
| import java.lang.annotation.Target; |
| |
| /** |
| * Prevents a bean from being created unless a property exists. |
| */ |
| @Retention(RetentionPolicy.RUNTIME) |
| @Target({ElementType.TYPE, ElementType.METHOD}) |
| @Conditional(value = PropertyExistsCondition.class) |
| public @interface ConditionOnPropertyExists { |
| /** |
| * The name of the property to test for existence. |
| * @return The property name. |
| */ |
| String value(); |
| } |