1 /* 2 * Copyright 2008 Google Inc. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 typedef struct DatabaseConnection DatabaseConnection; 17 18 /* Function that takes an SQL query string and sets results to an array of 19 * pointers with the result of the query. The value returned specifies the 20 * number of items in the returned array of results. The returned array of 21 * results are statically allocated and should not be deallocated using free() 22 */ 23 typedef unsigned int (*QueryDatabase)( 24 DatabaseConnection* const connection, const char * const query_string, 25 void *** const results); 26 27 // Connection to a database. 28 struct DatabaseConnection { 29 const char *url; 30 unsigned int port; 31 QueryDatabase query_database; 32 }; 33 34 // Connect to a database. 35 DatabaseConnection* connect_to_database(const char * const url, 36 const unsigned int port); 37 38
