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/*
* Copyright (c) 1997, 2019 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.ws.api.server;
import com.sun.istack.NotNull;
import com.sun.istack.Nullable;
/**
* Resolves relative references among {@link SDDocument}s.
*
*
* This interface is implemented by the caller of
* {@link SDDocument#writeTo} method so
* that the {@link SDDocument} can correctly produce references
* to other documents.
*
*
* This mechanism allows the user of {@link WSEndpoint} to
* assign logical URLs to each {@link SDDocument} (which is often
* necessarily done in a transport-dependent way), and then
* serve description documents.
*
*
*
*
Usage Example 1
*
* HTTP servlet transport chose to expose those metadata documents
* to HTTP GET requests where each {@link SDDocument} is identified
* by a simple query string "?ID". (HTTP servlet transport
* assigns such IDs by itself.)
*
*
* In this nameing scheme, when {@link SDDocument} X refers to
* {@link SDDocument} Y, it can put a reference as "?IDofY".
* By implementing {@link DocumentAddressResolver} it can do so.
*
* @author Kohsuke Kawaguchi
*/
public interface DocumentAddressResolver {
/**
* Produces a relative reference from one document to another.
*
* @param current
* The document that is being generated.
* @param referenced
* The document that is referenced.
* @return
* The reference to be put inside {@code current} to refer to
* {@code referenced}. This can be a relative URL as well as
* an absolute. If null is returned, then the {@link SDDocument}
* will produce a "implicit reference" (for example, <xs:import>
* without the @schemaLocation attribute, etc).
*/
@Nullable String getRelativeAddressFor(@NotNull SDDocument current, @NotNull SDDocument referenced);
}