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1 /* |
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2 * Copyright 2004-2006 Intel Corporation |
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3 * |
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4 * Licensed under the Apache License, Version 2.0 (the "License"); |
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5 * you may not use this file except in compliance with the License. |
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6 * You may obtain a copy of the License at |
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7 * |
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8 * http://www.apache.org/licenses/LICENSE-2.0 |
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9 * |
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10 * Unless required by applicable law or agreed to in writing, software |
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11 * distributed under the License is distributed on an "AS IS" BASIS, |
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12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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13 * See the License for the specific language governing permissions and |
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14 * limitations under the License. |
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15 */ |
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16 |
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17 #ifndef _POSTGRES_SQL_IMPLEMENTATION_H_ |
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18 #define _POSTGRES_SQL_IMPLEMENTATION_H_ |
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19 |
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20 #include <libpq-fe.h> |
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21 #include <oasys/debug/Log.h> |
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22 #include <oasys/serialize/SQLImplementation.h> |
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23 |
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24 namespace dtn { |
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25 |
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26 /** |
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27 * Postgres based implementation of SQL database. |
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28 */ |
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29 class PostgresSQLImplementation : public oasys::SQLImplementation, public oasys::Logger { |
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30 public: |
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31 PostgresSQLImplementation(); |
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32 |
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33 ///@{ |
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34 /// Virtual functions inherited from SQLImplementation |
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35 int connect(const char* dbname); |
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36 int close(); |
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37 bool has_table(const char* tablename); |
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38 int exec_query(const char* query); |
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39 int num_tuples(); |
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40 const char* get_value(int tuple_no, int field_no); |
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41 // size_t get_value_length(int tuple_no, int field_no); |
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42 |
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43 |
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44 const char* escape_string(const char* from); |
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45 const u_char* escape_binary(const u_char* from, int from_length); |
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46 const u_char* unescape_binary(const u_char* from); |
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47 |
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48 ///@} |
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49 |
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50 private: |
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51 PGconn* db_; ///< the db connection |
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52 PGresult* query_result_; /// result of the last query performed |
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53 }; |
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54 } // namespace dtn |
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55 |
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56 #endif /* _POSTGRES_SQL_IMPLEMENTATION_H_ */ |