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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
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package org.omg.CORBA.portable;


This interface provides a dispatching mechanism for an incoming call.
It is invoked by the ORB to dispatch a request to a servant.

/**
This interface provides a dispatching mechanism for an incoming call.
It is invoked by the ORB to dispatch a request to a servant.
*/

public interface InvokeHandler {
    
Invoked by the ORB to dispatch a request to the servant.
ORB passes the method name, an InputStream containing the
marshalled arguments, and a ResponseHandler which the servant
uses to construct a proper reply.
Only CORBA SystemException may be thrown by this method.
The method must return an OutputStream created by the
ResponseHandler which contains the marshalled reply.
A servant must not retain a reference to the ResponseHandler
beyond the lifetime of a method invocation.
Servant behaviour is defined as follows:

1. Determine correct method, and unmarshal parameters from
   InputStream.

2. Invoke method implementation.

3. If no user exception, create a normal reply using
   ResponseHandler.

4. If user exception occurred, create exception reply using
   ResponseHandler.

5. Marshal reply into OutputStream returned by
   ResponseHandler.

6. Return OutputStream to ORB.

Params:
  • method – The method name.
  • input – The InputStream containing the marshalled arguments.
  • handler – The ResponseHandler which the servant uses
to construct a proper reply
Throws:
  • SystemException – is thrown when invocation fails due to a CORBA system exception.
Returns:The OutputStream created by the
ResponseHandler which contains the marshalled reply
/**
     * Invoked by the ORB to dispatch a request to the servant.
     *
     * ORB passes the method name, an InputStream containing the
     * marshalled arguments, and a ResponseHandler which the servant
     * uses to construct a proper reply.
     *
     * Only CORBA SystemException may be thrown by this method.
     *
     * The method must return an OutputStream created by the
     * ResponseHandler which contains the marshalled reply.
     *
     * A servant must not retain a reference to the ResponseHandler
     * beyond the lifetime of a method invocation.
     *
     * Servant behaviour is defined as follows:
     * <p>1. Determine correct method, and unmarshal parameters from
     *    InputStream.
     * <p>2. Invoke method implementation.
     * <p>3. If no user exception, create a normal reply using
     *    ResponseHandler.
     * <p>4. If user exception occurred, create exception reply using
     *    ResponseHandler.
     * <p>5. Marshal reply into OutputStream returned by
     *    ResponseHandler.
     * <p>6. Return OutputStream to ORB.
     *
     * @param method The method name.
     * @param input The <code>InputStream</code> containing the marshalled arguments.
     * @param handler The <code>ResponseHandler</code> which the servant uses
     * to construct a proper reply
     * @return The <code>OutputStream</code> created by the
     * ResponseHandler which contains the marshalled reply
     * @throws SystemException is thrown when invocation fails due to a CORBA system exception.
     */

    OutputStream _invoke(String method, InputStream input,
                         ResponseHandler handler)
        throws org.omg.CORBA.SystemException;
}