groovy.lang.Grab Maven / Gradle / Ivy
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* 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.
*/
package groovy.lang;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
/**
* Used to grab the referenced artifact and its dependencies and make it available on the Classpath.
*
* Some examples:
*
* {@code @Grab}(group='commons-lang', module='commons-lang', version='2.4')
* import org.apache.commons.lang.WordUtils
* println "Hello ${WordUtils.capitalize('world')}"
*
* Or using the compact Gradle-inspired syntax:
*
* {@code @Grab}('commons-lang:commons-lang:2.4')
* import org.apache.commons.lang.WordUtils
* println "Hello ${WordUtils.capitalize('world')}"
*
* or the same thing again using the Ivy-inspired syntax variant:
*
* {@code @Grab}('commons-lang#commons-lang;2.4')
* import org.apache.commons.lang.WordUtils
* println "Hello ${WordUtils.capitalize('world')}"
*
* Further information such as where artifacts are downloaded to, how to add additional resolvers,
* how to customise artifact resolution etc., can be found on the Grape documentation page:
* http://groovy-lang.org/grape.html.
*/
@Retention(RetentionPolicy.SOURCE)
@Target({
ElementType.CONSTRUCTOR,
ElementType.FIELD,
ElementType.LOCAL_VARIABLE,
ElementType.METHOD,
ElementType.PARAMETER,
ElementType.TYPE})
public @interface Grab {
/**
* The organisation or group, e.g.: "org.apache.ant". A non-empty value is required unless value() is used.
*/
String group() default "";
/**
* The module or artifact, e.g.: "ant-junit". A non-empty value is required unless value() is used.
*/
String module() default "";
/**
* The revision or version, e.g.: "1.7.1". A non-empty value is required unless value() is used.
*/
String version() default "";
/**
* The classifier if in use, e.g.: "jdk14"
*/
String classifier() default "";
/**
* Defaults to {@code true} but set to {@code false} if you don't want transitive dependencies also to be downloaded.
* You may then need additional {@code @Grab} statements for any required dependencies.
*/
boolean transitive() default true;
/**
* Defaults to {@code false} but set to {@code true} to indicate to the underlying Ivy conflict manager that this
* dependency should be forced to the given revision. Otherwise, depending on the conflict manager in play, a later
* compatible version might be used instead.
*/
boolean force() default false;
/**
* Defaults to {@code false} but set to {@code true} if the dependency artifacts may change without a corresponding
* revision change. Not normally recommended but may be useful for certain kinds of snapshot artifacts.
* May reduce the amount of underlying Ivy caching. Proper behavior may be dependent on the resolver in use.
*/
boolean changing() default false;
/**
* The configuration if in use (normally only used by internal ivy repositories).
* One or more comma separated values with or without square brackets,
* e.g. for hibernate you might have "default,proxool,oscache" or "[default,dbcp,swarmcache]".
* This last hibernate example assumes you have set up such configurations in your local Ivy repo
* and have changed your grape config (using grapeConfig.xml) or the {@code @GrabConfig} annotation
* to point to that repo.
*/
String conf() default "";
/**
* The extension of the artifact (normally safe to leave at default value of "jar" but other values like "zip"
* are sometimes useful).
*/
String ext() default "";
/**
* The type of the artifact (normally safe to leave at default value of "jar" but other values like "sources" and "javadoc" are sometimes useful).
* But see also the "classifier" attribute which is also sometimes used for "sources" and "javadoc".
*/
String type() default "";
/**
* Allows a more compact convenience form in one of two formats with optional appended attributes.
* Must not be used if group(), module() or version() are used.
*
* You can choose either format but not mix-n-match:
* {@code group:module:version:classifier@ext} (where only group and module are required)
* {@code group#module;version[confs]} (where only group and module are required and confs,
* if used, is one or more comma separated configuration names)
* In addition, you can add any valid Ivy attributes at the end of your string value using
* semi-colon separated name = value pairs, e.g.:
* {@code @Grab('junit:junit:*;transitive=false')}
* {@code @Grab('group=junit;module=junit;version=4.8.2;classifier=javadoc')}
*/
String value() default "";
/**
* By default, when a {@code @Grab} annotation is used, a {@code Grape.grab()} call is added
* to the static initializers of the class the annotatable node appears in.
* If you wish to disable this, add {@code initClass=false} to the annotation.
*/
boolean initClass() default true;
}
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