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72 lines
2.3 KiB
C++
72 lines
2.3 KiB
C++
/* -------------------------------------------------------------------------- */
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/* Copyright 2002-2020, OpenNebula Project, OpenNebula Systems */
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/* */
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/* Licensed under the Apache License, Version 2.0 (the "License"); you may */
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/* not use this file except in compliance with the License. You may obtain */
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/* a copy of the License at */
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/* */
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/* http://www.apache.org/licenses/LICENSE-2.0 */
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/* */
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/* Unless required by applicable law or agreed to in writing, software */
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/* distributed under the License is distributed on an "AS IS" BASIS, */
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/* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. */
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/* See the License for the specific language governing permissions and */
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/* limitations under the License. */
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/* -------------------------------------------------------------------------- */
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#ifndef OBJECT_SQL_H_
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#define OBJECT_SQL_H_
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#include "Callbackable.h"
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#include "SqlDB.h"
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/**
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* ObjectSQL class. Provides a SQL backend interface, it should be implemented
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* by persistent objects.
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*/
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class ObjectSQL : public Callbackable
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{
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public:
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ObjectSQL() = default;
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virtual ~ObjectSQL() = default;
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protected:
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/**
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* Reads the ObjectSQL (identified with its OID) from the database.
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* @param db pointer to the db
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* @return 0 on success
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*/
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virtual int select(
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SqlDB * db) = 0;
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/**
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* Writes the ObjectSQL in the database.
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* @param db pointer to the db
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* @return 0 on success
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*/
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virtual int insert(
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SqlDB * db,
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std::string& error_str) = 0;
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/**
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* Updates the ObjectSQL in the database.
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* @param db pointer to the db
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* @return 0 on success
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*/
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virtual int update(
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SqlDB * db) = 0;
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/**
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* Removes the ObjectSQL from the database.
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* @param db pointer to the db
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* @return 0 on success
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*/
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virtual int drop(
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SqlDB * db) = 0;
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};
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#endif /*OBJECT_SQL_H_*/
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