/*
* The MIT License
*
* Copyright (c) 2004-2009, Sun Microsystems, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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package hudson.cli.declarative;
import hudson.cli.CLICommand;
import hudson.model.Hudson;
import org.jvnet.hudson.annotation_indexer.Indexed;
import org.kohsuke.args4j.CmdLineException;
import java.lang.annotation.Documented;
import static java.lang.annotation.ElementType.METHOD;
import java.lang.annotation.Retention;
import static java.lang.annotation.RetentionPolicy.RUNTIME;
import java.lang.annotation.Target;
/**
* Annotates a resolver method that binds a portion of the command line arguments and parameters
* to an instance whose {@link CLIMethod} is invoked for the final processing.
*
* <p>
* Hudson uses the return type of the resolver method
* to pick the resolver method to use, of all the resolver methods it discovers. That is,
* if Hudson is looking to find an instance of type <tt>T</tt> for the current command, it first
* looks for the resolver method whose return type is <tt>T</tt>, then it checks for the base type of <tt>T</tt>,
* and so on.
*
* <p>
* If the chosen resolver method is an instance method on type <tt>S</tt>, the "parent resolver" is then
* located to resolve an instance of type 'S'. This process repeats until a static resolver method is discovered
* (since most of Hudson's model objects are anchored to the root {@link Hudson} object, normally that would become
* the top-most resolver method.)
*
* <p>
* Parameters of the resolver method receives the same parameter/argument injections that {@link CLIMethod}s receive.
* Parameters and arguments consumed by the resolver will not be visible to {@link CLIMethod}s.
*
* <p>
* The resolver method shall never return null — it should instead indicate a failure by throwing
* {@link CmdLineException}.
*
* @author Kohsuke Kawaguchi
* @see CLICommand
* @since 1.321
*/
@Indexed
@Retention(RUNTIME)
@Target({METHOD})
@Documented
public @interface CLIResolver {
}