src/java.naming/share/classes/javax/naming/spi/Resolver.java

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package javax.naming.spi;

import javax.naming.Context;
import javax.naming.Name;
import javax.naming.NamingException;

/**
  * This interface represents an "intermediate context" for name resolution.
  *<p>
  * The Resolver interface contains methods that are implemented by contexts
  * that do not support subtypes of Context, but which can act as
  * intermediate contexts for resolution purposes.
  *<p>
  * A {@code Name} parameter passed to any method is owned
  * by the caller.  The service provider will not modify the object
  * or keep a reference to it.
  * A {@code ResolveResult} object returned by any
  * method is owned by the caller.  The caller may subsequently modify it;
  * the service provider may not.
  *
  * @author Rosanna Lee
  * @author Scott Seligman
  * @since 1.3
  */

public interface Resolver {

    /**
     * Partially resolves a name.  Stops at the first
     * context that is an instance of a given subtype of
     * <code>Context</code>.
     *
     * @param name
     *          the name to resolve
     * @param contextType
     *          the type of object to resolve.  This should
     *          be a subtype of <code>Context</code>.
     * @return  the object that was found, along with the unresolved
     *          suffix of <code>name</code>.  Cannot be null.
     *
     * @throws  javax.naming.NotContextException
     *          if no context of the appropriate type is found
     * @throws  NamingException if a naming exception was encountered
     *
     * @see #resolveToClass(String, Class)
     */
    public ResolveResult resolveToClass(Name name,
                                        Class<? extends Context> contextType)
            throws NamingException;

    /**
     * Partially resolves a name.
     * See {@link #resolveToClass(Name, Class)} for details.
     *
     * @param name
     *          the name to resolve
     * @param contextType
     *          the type of object to resolve.  This should
     *          be a subtype of <code>Context</code>.
     * @return  the object that was found, along with the unresolved
     *          suffix of <code>name</code>.  Cannot be null.
     *
     * @throws  javax.naming.NotContextException
     *          if no context of the appropriate type is found
     * @throws  NamingException if a naming exception was encountered
     */
    public ResolveResult resolveToClass(String name,
                                        Class<? extends Context> contextType)
            throws NamingException;
};