meutel/bouquins-bchs
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typedef book, series, authors

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This commit is contained in:
Meutel 2016-12-30 10:10:55 +01:00
parent dcff9e437c
commit a28be1c39f
3 changed files with 56 additions and 19 deletions
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25
db.c
View File

@ -29,29 +29,31 @@
#include "extern.h"
enum stmt {
STMT_BOOK,
STMT_BOOKS,
STMT__MAX
STMT_BOOK,
STMT_BOOKS,
STMT__MAX
};
static const char *const stmts[STMT__MAX] = {
/* STMT_BOOK */
"SELECT books.id AS id,title FROM books WHERE books.id = ?",
"SELECT books.id AS id,title,series_index,name as series_name,series.id AS series_id FROM books LEFT OUTER JOIN books_series_link ON books.id = books_series_link.book LEFT OUTER JOIN series ON series.id = books_series_link.series WHERE books.id = ?",
/* STMT_BOOKS */
"SELECT books.id AS id,title FROM books LIMIT ?",
};
void
db_book_free(struct book *b)
db_book_free(Book *b)
{
if (NULL == b)
return;
free(b->title);
//TODO free series
free(b->s.name);
free(b);
}
int
db_books_load(struct kreq *r, struct book **books, int limit)
db_books_load(struct kreq *r, Book **books, int limit)
{
if (limit < 0) {
return 0;
@ -63,7 +65,7 @@ db_books_load(struct kreq *r, struct book **books, int limit)
STMT_BOOKS);
ksql_bind_int(stmt, 0, limit);
while (KSQL_ROW == ksql_stmt_step(stmt)) {
books[i] = kcalloc(1, sizeof(struct book));
books[i] = kcalloc(1, sizeof(Book));
books[i]->id = ksql_stmt_int(stmt, 0);
books[i]->title = kstrdup(ksql_stmt_str(stmt, 1));
i++;
@ -72,11 +74,11 @@ db_books_load(struct kreq *r, struct book **books, int limit)
return i;
}
struct book *
Book *
db_book_load(struct kreq *r, int64_t id)
{
struct ksqlstmt *stmt;
struct book *book;
Book *book;
ksql_stmt_alloc(r->arg, &stmt,
stmts[STMT_BOOK],
STMT_BOOK);
@ -85,9 +87,12 @@ db_book_load(struct kreq *r, int64_t id)
ksql_stmt_free(stmt);
return(NULL);
}
book = kcalloc(1, sizeof(struct book));
book = kcalloc(1, sizeof(Book));
book->id = ksql_stmt_int(stmt, 0);
book->title = kstrdup(ksql_stmt_str(stmt, 1));
book->s_idx = ksql_stmt_int(stmt, 2);
book->s.name = kstrdup(ksql_stmt_str(stmt, 3));
book->s.id = ksql_stmt_int(stmt, 4);
ksql_stmt_free(stmt);
return book;
}

44
extern.h
View File

@ -18,18 +18,50 @@
#define EXTERN_H
/*
* A book.
* A book series.
*/
struct book {
int64_t id; /* unique identifier */
typedef struct
{
int64_t id;
char *name;
} Series;
/*
* A book. Generic data.
*/
typedef struct
{
int64_t id;
char *title;
int s_idx; /* series index */
Series s;
} Book;
/*
* An author.
*/
typedef struct
{
int64_t id;
char *name;
} Author;
/*
* A book. Advanced data: authors, tags.
*/
struct book_adv
{
Book b;
size_t autsize;
Author *authors;
// TODO tags
};
__BEGIN_DECLS
struct book * db_book_load(struct kreq *r, int64_t id);
int db_books_load(struct kreq *r, struct book **books, int limit);
void db_book_free(struct book *b);
Book *db_book_load(struct kreq *r, int64_t id);
int db_books_load(struct kreq *r, Book **books, int limit);
void db_book_free(Book *b); // TODO series
void db_close(struct kreq *);
int db_open(struct kreq *, const char *);

6
main.c
View File

@ -95,7 +95,7 @@ puterror(struct kjsonreq *req, char *message)
}
void
putbook(struct kjsonreq *req, struct book *b)
putbook(struct kjsonreq *req, Book *b)
{
kjson_obj_open(req);
kjson_putintp(req, "id", b->id);
@ -109,7 +109,7 @@ sendbooks(struct kreq *r)
struct kjsonreq req;
const char *errid;
int64_t id = -1;
struct book *b = NULL;
Book *b = NULL;
int res, i = 0;
if (NULL != r->fieldmap[KEY_ID])
@ -128,7 +128,7 @@ sendbooks(struct kreq *r)
db_book_free(b);
} else {
kjson_array_open(&req);
struct book **books = kcalloc(10, sizeof(struct book));
Book **books = kcalloc(10, sizeof(Book));
res = db_books_load(r, books, 10);
while (i < res) {
putbook(&req, books[i]);