org.glassfish.jaxb.runtime.CycleRecoverable Maven / Gradle / Ivy
/*
* 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 cn.lzgabel.jaxb.runtime;
import jakarta.xml.bind.Marshaller;
/**
* Optional interface that can be implemented by JAXB-bound objects
* to handle cycles in the object graph.
*
*
* As discussed in
* the users' guide, normally a cycle in the object graph causes the marshaller to report an error,
* and when an error is found, the JAXB RI recovers by cutting the cycle arbitrarily.
* This is not always a desired behavior.
*
*
* Implementing this interface allows user application to change this behavior.
*
* @since JAXB 2.1 EA2
* @author Kohsuke Kawaguchi
*/
public interface CycleRecoverable {
/**
* Called when a cycle is detected by the JAXB RI marshaller
* to nominate a new object to be marshalled instead.
*
* @param context
* This object is provided by the JAXB RI to inform
* the object about the marshalling process that's going on.
*
*
* @return
* the object to be marshalled instead of {@code this} object.
* Or return null to indicate that the JAXB RI should behave
* just like when your object does not implement {@link CycleRecoverable}
* (IOW, cut the cycle arbitrarily and try to go on.)
*/
Object onCycleDetected(Context context);
/**
* This interface is implemented by the JAXB RI to provide
* information about the on-going marshalling process.
*
*
* We may add more methods in the future, so please do not
* implement this interface in your application.
*/
public interface Context {
/**
* Returns the marshaller object that's doing the marshalling.
*
* @return
* always non-null.
*/
Marshaller getMarshaller();
}
}