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package com.sun.xml.bind;

import javax.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. * Also see this related discussion. * * @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 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(); } }





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