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61 lines
2.2 KiB
C++
61 lines
2.2 KiB
C++
/* -------------------------------------------------------------------------- */
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/* Copyright 2002-2014, OpenNebula Project (OpenNebula.org), C12G Labs */
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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 SQL_DB_H_
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#define SQL_DB_H_
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#include <sstream>
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#include "Callbackable.h"
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using namespace std;
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/**
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* SqlDB class.Provides an abstract interface to implement a SQL backend
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*/
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class SqlDB
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{
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public:
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SqlDB(){};
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virtual ~SqlDB(){};
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/**
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* Performs a DB transaction
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* @param sql_cmd the SQL command
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* @param callbak function to execute on each data returned
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* @param quiet True to log errors with DDEBUG level instead of ERROR
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* @return 0 on success
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*/
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virtual int exec(ostringstream& cmd, Callbackable* obj=0, bool quiet=false) = 0;
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/**
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* This function returns a legal SQL string that can be used in an SQL
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* statement.
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* @param str the string to be escaped
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* @return a valid SQL string or NULL in case of failure
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*/
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virtual char * escape_str(const string& str) = 0;
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/**
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* Frees a previously scaped string
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* @param str pointer to the str
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*/
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virtual void free_str(char * str) = 0;
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};
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#endif /*SQL_DB_H_*/
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