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/*-
* See the file LICENSE for redistribution information.
*
* Copyright (c) 2010 Oracle. All rights reserved.
*
*/
/*
* This file show a exmple of using bfile interface for OSL.
*/
#include <stdio.h>
#include <sqlite3.h>
#include <bfile.h>
#define CHECK_ERR \
if (rc != SQLITE_OK) { \
fprintf(stderr, " SQL error: %s\n", zErrMsg); \
sqlite3_free(zErrMsg); \
return -1; \
}
#define EXEC(sql) \
printf("\nRuning:\t%s\n",(sql)); \
rc = sqlite3_exec(db, (sql), NULL, 0, &zErrMsg); \
CHECK_ERR
#define QUERY(sql) \
printf("\nRuning:\t%s\n",(sql)); \
rc = sqlite3_prepare(db, (sql), -1, &pStmt, 0); \
if (rc != SQLITE_OK) { \
fprintf(stderr," SQL error: %d\n", rc); \
return -1; \
} \
printf("\tname\tphone \taddress \tphoto_path\n"); \
while (SQLITE_ROW == sqlite3_step(pStmt)) { \
const char *name = \
(const char *)sqlite3_column_text(pStmt, 0);\
const char *phone_num = \
(const char *)sqlite3_column_text(pStmt, 1);\
const char *address = \
(const char *)sqlite3_column_text(pStmt, 2);\
const char *photo_path = \
(const char *)sqlite3_column_text(pStmt, 3);\
printf("\t%s\t%s\t%s\t%s\n", name, phone_num, \
address, photo_path); \
}
#define cleandb(db) \
sqlite3_exec(db, \
"DELETE FROM BFILE_DIRECTORY WHERE alias='IMG';", NULL, \
0, &zErrMsg); \
sqlite3_exec(db, "DROP TABLE address_book;", NULL, 0, &zErrMsg);\
#define BUFF_SIZE 80
static int query_with_api(sqlite3* db, char * sql) {
int rc, len, i;
sqlite3_stmt *pStmt;
sqlite3_bfile *pBfile;
char *name, *phone_num, *address, buf[BUFF_SIZE];
off_t offset;
printf("\nRuning:\t%s with BFILE APIs\n",(sql));
rc = sqlite3_prepare(db, sql, -1, &pStmt, 0);
if (rc != SQLITE_OK) {
fprintf(stderr," SQL error: %d\n", rc);
return -1;
}
printf("\tname\tphone \taddress \n");
while (SQLITE_ROW == sqlite3_step(pStmt)) {
name = (char *)sqlite3_column_text(pStmt, 0);
phone_num = (char *)sqlite3_column_text(pStmt, 1);
address = (char *)sqlite3_column_text(pStmt, 2);
printf("\t%s\t%s\t%s\n", name, phone_num, address);
/* Bfile APIs */
sqlite3_column_bfile(pStmt, 3, &pBfile);
rc = sqlite3_bfile_open(pBfile);
if (rc != SQLITE_OK)
return -1;
offset = 0;
do {
rc = sqlite3_bfile_read(pBfile, buf, BUFF_SIZE,
offset, &len);
if (rc != SQLITE_OK)
return -1;
for (i = 0; i < len; i++)
putchar(buf[i]);
offset += len;
} while(len > 0);
printf("\n");
rc = sqlite3_bfile_close(pBfile);
if (rc != SQLITE_OK)
return -1;
rc = sqlite3_bfile_final(pBfile);
if (rc != SQLITE_OK)
return -1;
}
return 0;
}
int main(int argc, char **argv) {
sqlite3 *db;
sqlite3_stmt *pStmt;
char *zErrMsg = 0;
int rc;
rc = sqlite3_open("example.db", &db);
CHECK_ERR
sqlite3_enable_load_extension(db, 1);
rc = sqlite3_load_extension(db, "libbfile_ext.so", NULL, &zErrMsg);
CHECK_ERR
/* clean the database */
cleandb(db);
/* create directory alias */
//EXEC("INSERT INTO BFILE_DIRECTORY VALUES('IMG','./temp');")
EXEC("SELECT BFILE_CREATE_DIRECTORY('IMG', './temp');")
/* create a table with BFILE type column */
EXEC("CREATE TABLE address_book(name TEXT, phone_num TEXT, address TEXT, photo BFILE);")
/* insert */
EXEC("INSERT INTO address_book VALUES('Tony', '+861082798880', 'China Beijing', BFILE_NAME('IMG','Tony.jpg'));")
/* insert */
EXEC("INSERT INTO address_book VALUES('Rachel', '+861082798881', 'China Beijing', BFILE_NAME('IMG','Rachel.jpg'));")
/* insert */
EXEC("INSERT INTO address_book VALUES('Tracy', '+861082798882', 'China Beijing', BFILE_NAME('IMG','Tracy.jpg'));")
/* query */
QUERY("SELECT name, phone_num, address, BFILE_FULLPATH(photo) FROM address_book;")
rc = query_with_api(db, "SELECT name, phone_num, address, photo FROM address_book;");
if (rc) return -1;
/* update */
EXEC("UPDATE address_book SET photo = BFILE_NAME('IMG', 'Tony_new.jpg') where name = 'Tony';")
/* query */
QUERY("SELECT name, phone_num, address, BFILE_FULLPATH(photo) FROM address_book;")
rc = query_with_api(db, "SELECT name, phone_num, address, photo FROM address_book;");
if (rc) return -1;
/* update alias */
//EXEC("UPDATE BFILE_DIRECTORY SET PATH = './photo' WHERE ALIAS = 'IMG';");
EXEC("SELECT BFILE_REPLACE_DIRECTORY('IMG', './photo');")
/* query */
QUERY("SELECT name, phone_num, address, BFILE_FULLPATH(photo) FROM address_book;")
rc = query_with_api(db, "SELECT name, phone_num, address, photo FROM address_book;");
if (rc) return -1;
sqlite3_close(db);
return 0;
}
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