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/*
* Copyright (c) 1997, 2021 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Distribution License v. 1.0, which is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
package com.sun.xml.bind.v2.model.annotation;
import com.sun.xml.bind.v2.runtime.Location;
/**
* {@link Location} that is chained.
*
*
* {@link Locatable} forms a tree structure, where each {@link Locatable}
* points back to the upstream {@link Locatable}.
* For example, imagine {@link Locatable} X that points to a particular annotation,
* whose upstream is {@link Locatable} Y, which points to a particular method
* (on which the annotation is put), whose upstream is {@link Locatable} Z,
* which points to a particular class (in which the method is defined),
* whose upstream is {@link Locatable} W,
* which points to another class (which refers to the class Z), and so on.
*
*
* This chain will be turned into a list when we report the error to users.
* This allows them to know where the error happened
* and why that place became relevant.
*
* @author Kohsuke Kawaguchi
*/
public interface Locatable {
/**
* Gets the upstream {@link Location} information.
*
* @return
* can be null.
*/
Locatable getUpstream();
/**
* Gets the location object that this object points to.
*
* This operation could be inefficient and costly.
*/
Location getLocation();
}