org.snmp4j.agent.mo.MOMutableRow2PC Maven / Gradle / Ivy
/*_############################################################################
_##
_## SNMP4J-Agent 2 - MOMutableRow2PC.java
_##
_## Copyright (C) 2005-2014 Frank Fock (SNMP4J.org)
_##
_## Licensed under the Apache License, Version 2.0 (the "License");
_## you may not use this file except in compliance with the License.
_## You may obtain a copy of the License at
_##
_## http://www.apache.org/licenses/LICENSE-2.0
_##
_## Unless required by applicable law or agreed to in writing, software
_## distributed under the License is distributed on an "AS IS" BASIS,
_## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
_## See the License for the specific language governing permissions and
_## limitations under the License.
_##
_##########################################################################*/
package org.snmp4j.agent.mo;
import org.snmp4j.agent.mo.DefaultMOTable.*;
import org.snmp4j.agent.request.*;
/**
* The MOMutableRow2PC interface adds support for 2-Phase-Commit
* to mutable table rows.
*
* @author Frank Fock
* @version 1.0
*/
public interface MOMutableRow2PC extends MOMutableTableRow {
/**
* Prepares a row for changes described by the supplied change set. If the
* modification cannot be successfully prepared, the error status of the
* supplied subRequest should be set to the appropriate error
* status value.
*
* This method is called only once per modified row.
* @param subRequest
* the sub-request that triggered the row change and that can be used
* to deny the commit phase by setting its error status.
* @param changeSet
* a MOTableRow instance that represents the state of the row if all
* changes have been applied successfully.
*/
void prepareRow(SubRequest subRequest, MOTableRow changeSet);
/**
* Prepares changing a single column.
* @param subRequest
* the sub-request that corresponds to the column change. This object
* can be used to deny the commit phase by setting its error status.
* @param changeSet
* a MOTableRow instance that represents the state of the row if all
* changes have been applied successfully.
* @param column
* the column index of the column to be changed.
*/
void prepare(SubRequest subRequest, MOTableRow changeSet, int column);
/**
* Commits changes to single column.
* @param subRequest
* the sub-request that corresponds to the column change. This object
* can be used to deny the commit phase and triggering the undo phase
* by setting its error status.
* @param changeSet
* a MOTableRow instance that represents the state of the row if all
* changes have been applied successfully.
* @param column
* the column index of the column to be changed.
*/
void commit(SubRequest subRequest, MOTableRow changeSet, int column);
/**
* Commits a row as described by the supplied change set. If the
* modification cannot be successfully committed, the error status of the
* supplied subRequest should be set to
* commitFailed. Setting this error should be avoided under
* any circumstances.
*
* This method is called only once per modified row.
* @param subRequest
* the sub-request that triggered the row change and that can be used
* to trigger the undo phase by setting its error status.
* @param changeSet
* a MOTableRow instance that represents the state of the row if all
* changes have been applied successfully.
*/
void commitRow(SubRequest subRequest, MOTableRow changeSet);
/**
* Cleanups resources holds for changes to a single column.
* @param subRequest
* the sub-request that corresponds to the column change.
* @param column
* the column index of the changed column.
*/
void cleanup(SubRequest subRequest, int column);
/**
* Cleans up resources for a row.
*
* This method is called only once per modified row.
* @param request
* the sub-request that triggered the row change.
* @param changeSet
* a MOTableRow instance that represents the state of the row if all
* changes have been applied successfully.
*/
void cleanupRow(SubRequest request, ChangeSet changeSet);
/**
* Undos the changes to a single column.
* @param subRequest
* the sub-request that corresponds to the column change.
* @param column
* the column index of the changed column.
*/
void undo(SubRequest subRequest, int column);
/**
* Undos changes to a row.
*
* This method is called only once per modified row.
* @param request
* the sub-request that triggered the row change.
* @param changeSet
* a MOTableRow instance that represents the state of the row if all
* changes have been applied successfully.
*/
void undoRow(SubRequest request, ChangeSet changeSet);
}