PostgresSQLImplementation.h

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00001 /*
00002  *    Copyright 2004-2006 Intel Corporation
00003  * 
00004  *    Licensed under the Apache License, Version 2.0 (the "License");
00005  *    you may not use this file except in compliance with the License.
00006  *    You may obtain a copy of the License at
00007  * 
00008  *        http://www.apache.org/licenses/LICENSE-2.0
00009  * 
00010  *    Unless required by applicable law or agreed to in writing, software
00011  *    distributed under the License is distributed on an "AS IS" BASIS,
00012  *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00013  *    See the License for the specific language governing permissions and
00014  *    limitations under the License.
00015  */
00016 
00017 #ifndef _POSTGRES_SQL_IMPLEMENTATION_H_
00018 #define _POSTGRES_SQL_IMPLEMENTATION_H_
00019 
00020 #include <libpq-fe.h>
00021 #include <oasys/debug/Log.h>
00022 #include <oasys/serialize/SQLImplementation.h>
00023 
00024 namespace dtn {
00025 
00029 class PostgresSQLImplementation : public oasys::SQLImplementation, public oasys::Logger {
00030 public:
00031     PostgresSQLImplementation();
00032     
00035     int connect(const char* dbname);
00036     int close();
00037     bool has_table(const char* tablename);
00038     int exec_query(const char* query);
00039     int num_tuples();
00040     const char* get_value(int tuple_no, int field_no);
00041 //    size_t get_value_length(int tuple_no, int field_no);
00042     
00043 
00044     const char* escape_string(const char* from);
00045     const u_char* escape_binary(const u_char* from, int from_length);
00046     const u_char* unescape_binary(const u_char* from);
00047   
00049 
00050 private:
00051     PGconn* db_;                
00052     PGresult* query_result_;    
00053 };
00054 } // namespace dtn
00055 
00056 #endif /* _POSTGRES_SQL_IMPLEMENTATION_H_ */

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