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/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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package com.sun.jmx.snmp.agent;

import java.util.Enumeration;
import java.util.Vector;
import com.sun.jmx.snmp.SnmpVarBind;
import com.sun.jmx.snmp.SnmpStatusException;
import com.sun.jmx.snmp.SnmpOid;
// import com.sun.jmx.snmp.SnmpIndex;

/**
 * This interface models an SNMP sub request to be performed on a specific
 * SNMP MIB node. The node involved can be either an SNMP group, an SNMP table,
 * or an SNMP table entry (conceptual row). The conceptual row may or may not
 * already exist. If the row did not exist at the time when the request
 * was received, the <CODE>isNewEntry()</CODE> method will return <CODE>
 * true</CODE>.
 * <p>
 * Objects implementing this interface will be allocated by the SNMP engine.
 * You will never need to implement this interface. You will only use it.
 * </p>
 * <p><b>This API is a Sun Microsystems internal API  and is subject
 * to change without notice.</b></p>
 */
public interface SnmpMibSubRequest extends SnmpMibRequest {
    /**
     * Return the list of varbind to be handled by the SNMP MIB node.
     * <p>
     * <b>Note:</b> <ul>
     * <i>In case of SET operation, if this node is a table row which
     * contains a control variable (as identified by the table's
     * isRowStatus() method) the control variable will not
     * be included in this list: it will be obtained by calling
     * getRowStatusVarBind(). This will allow you to handle the control
     * variable specifically.</i><br>
     * You will never need to worry about this unless you need to
     * implement a non standard mechanism for handling row
     * creation and deletion.
     * </ul>
     * <p>
     * @return The elements of the enumeration are instances of
     *         {@link com.sun.jmx.snmp.SnmpVarBind}
     */
    @Override
    public Enumeration<SnmpVarBind> getElements();

    /**
     * Return the list of varbind to be handled by the SNMP MIB node.
     * <p>
     * <b>Note:</b> <ul>
     * <i>In case of SET operation, if this node is a table row which
     * contains a control variable (as identified by the table's
     * isRowStatus() method) the control variable will not
     * be included in this list: it will be obtained by calling
     * getRowStatusVarBind(). This will allow you to handle the control
     * variable specifically.</i><br>
     * You will never need to worry about this unless you need to
     * implement a non standard mechanism for handling row
     * creation and deletion.
     * </ul>
     * <p>
     * @return The elements of the vector are instances of
     *         {@link com.sun.jmx.snmp.SnmpVarBind}
     */
    @Override
    public Vector<SnmpVarBind> getSubList();

    /**
     * Return the part of the OID identifying the table entry involved.
     * <p>
     *
     * @return {@link com.sun.jmx.snmp.SnmpOid} or <CODE>null</CODE>
     *         if the request is not directed to an entry.
     */
    public SnmpOid     getEntryOid();

    /**
     * Indicate whether the entry involved is a new entry.
     * This method will return <CODE>true</CODE> if the entry was not
     * found when the request was processed. As a consequence, <CODE>
     * true</CODE> means that either the entry does not exist yet,
     * or it has been created while processing this request.
     * The result of this method is only significant when an entry
     * is involved.
     *
     * <p>
     * @return <CODE>true</CODE> If the entry did not exist,
     *  or <CODE>false</CODE> if the entry involved was found.
     */
    public boolean     isNewEntry();

    /**
     * Return the varbind that holds the RowStatus variable.
     * It corresponds to the varbind that was identified by
     * the <code>isRowStatus()</code> method generated by mibgen
     * on {@link com.sun.jmx.snmp.agent.SnmpMibTable} derivatives.
     * <ul><li>In SMIv2, it is the varbind which contains the columnar
     *         object implementing the RowStatus TEXTUAL-CONVENTION.</li>
     *      <li>In SMIv1 nothing special is generated</li>
     *      <ul>You may however subclass the generated table metadata
     *          class in order to provide your own implementation of
     *          isRowStatus(), getRowAction(), isRowReady() and
     *          setRowStatus()
     *          (see  {@link com.sun.jmx.snmp.agent.SnmpMibTable}).</ul>
     * </ul>
     * <p>
     * @return a varbind that serves to control the table modification.
     *         <code>null</code> means that no such varbind could be
     *         identified.<br>
     *         <b>Note:</b><i>The runtime will only try to identify
     *         the RowStatus varbind when processing an
     *         SNMP SET request. In this case, the identified
     *         varbind will not be included in the set of varbinds
     *         returned by getSubList() and getElements().
     *         </i>
     *
     **/
    public SnmpVarBind getRowStatusVarBind();

    /**
     * This method should be called when a status exception needs to
     * be raised for a given varbind of an SNMP GET request. This method
     * performs all the necessary conversions (SNMPv1 <=> SNMPv2) and
     * propagates the exception if needed:
     * If the version is SNMP v1, the exception is propagated.
     * If the version is SNMP v2, the exception is stored in the varbind.
     * This method also takes care of setting the correct value of the
     * index field.
     * <p>
     *
     * @param varbind The varbind for which the exception is
     *        registered. Note that this varbind <b>must</b> have
     *        been obtained from the enumeration returned by
     *        <CODE>getElements()</CODE>, or from the vector
     *        returned by <CODE>getSubList()</CODE>
     *
     * @param exception The exception to be registered for the given varbind.
     *
     */
    public void registerGetException(SnmpVarBind varbind,
                                     SnmpStatusException exception)
        throws SnmpStatusException;

    /**
     * This method should be called when a status exception needs to
     * be raised for a given varbind of an SNMP SET request. This method
     * performs all the necessary conversions (SNMPv1 <=> SNMPv2) and
     * propagates the exception if needed.
     * This method also takes care of setting the correct value of the
     * index field.
     * <p>
     *
     * @param varbind The varbind for which the exception is
     *        registered. Note that this varbind <b>must</b> have
     *        been obtained from the enumeration returned by
     *        <CODE>getElements()</CODE>, or from the vector
     *        returned by <CODE>getSubList()</CODE>
     *
     * @param exception The exception to be registered for the given varbind.
     *
     */
    public void registerSetException(SnmpVarBind varbind,
                                     SnmpStatusException exception)
        throws SnmpStatusException;

    /**

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