1 package org.apache.maven.plugins.annotations; 2 3 /* 4 * Licensed to the Apache Software Foundation (ASF) under one 5 * or more contributor license agreements. See the NOTICE file 6 * distributed with this work for additional information 7 * regarding copyright ownership. The ASF licenses this file 8 * to you under the Apache License, Version 2.0 (the 9 * "License"); you may not use this file except in compliance 10 * with the License. You may obtain a copy of the License at 11 * 12 * http://www.apache.org/licenses/LICENSE-2.0 13 * 14 * Unless required by applicable law or agreed to in writing, 15 * software distributed under the License is distributed on an 16 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 17 * KIND, either express or implied. See the License for the 18 * specific language governing permissions and limitations 19 * under the License. 20 */ 21 22 import java.lang.annotation.Documented; 23 import java.lang.annotation.ElementType; 24 import java.lang.annotation.Inherited; 25 import java.lang.annotation.Retention; 26 import java.lang.annotation.RetentionPolicy; 27 import java.lang.annotation.Target; 28 29 /** 30 * Used to configure your Mojo parameters to be injected by 31 * <a href="/ref/current/maven-core/apidocs/org/apache/maven/plugin/MavenPluginManager.html"> 32 * <code>MavenPluginManager.getConfiguredMojo(...)</code></a>. 33 * 34 * @author Olivier Lamy 35 * @since 3.0 36 */ 37 @Documented 38 @Retention( RetentionPolicy.CLASS ) 39 @Target( { ElementType.FIELD } ) 40 @Inherited 41 public @interface Parameter 42 { 43 /** 44 * alias supported to get parameter value. 45 * @return the alias 46 */ 47 String alias() default ""; 48 49 /** 50 * Property to use to retrieve a value. Can come from <code>-D</code> execution, setting properties or pom properties. 51 * @return property name 52 */ 53 String property() default ""; 54 55 /** 56 * parameter default value, eventually containing <code>${...}</code> expressions which will be interpreted at 57 * inject time: see 58 * <a href="/ref/current/maven-core/apidocs/org/apache/maven/plugin/PluginParameterExpressionEvaluator.html"> 59 * PluginParameterExpressionEvaluator</a>. 60 * @return the default value 61 */ 62 String defaultValue() default ""; 63 64 /** 65 * is the parameter required? 66 * @return <code>true</code> if the Mojo should fail when the parameter cannot be injected 67 */ 68 boolean required() default false; 69 70 /** 71 * Specifies that this parameter cannot be configured directly by the user (as in the case of POM-specified 72 * configuration). This is useful when you want to force the user to use common POM elements rather than plugin 73 * configurations, as in the case where you want to use the artifact's final name as a parameter. In this case, you 74 * want the user to modify <code><build><finalName/></build></code> rather than specifying a value 75 * for finalName directly in the plugin configuration section. It is also useful to ensure that - for example - a 76 * List-typed parameter which expects items of type Artifact doesn't get a List full of Strings. 77 * 78 * @return <code>true</code> if the user should not be allowed to configure the parameter directly 79 */ 80 boolean readonly() default false; 81 }