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Full book data

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This commit is contained in:
Meutel 2016-12-31 15:33:09 +01:00
parent 2c5026c469
commit c399fece1e
3 changed files with 177 additions and 30 deletions
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135
db.c
View File

@ -30,6 +30,7 @@
enum stmt {
STMT_BOOK,
STMT_BOOK_AUTHORS,
STMT_BOOKS,
STMT_BOOKS_COUNT,
STMT_BOOKS_AUTHORS,
@ -38,13 +39,31 @@ enum stmt {
static const char *const stmts[STMT__MAX] = {
/* STMT_BOOK */
"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 = ?",
"SELECT books.id AS id,title, series_index, series.name AS series_name, series.id AS series_id, \
timestamp,pubdate, isbn,lccn,path,uuid,has_cover, \
languages.lang_code,format,uncompressed_size,data.name AS data_name, publishers.name AS pubname FROM books \
LEFT OUTER JOIN books_languages_link ON books_languages_link.book = books.id \
LEFT OUTER JOIN languages ON languages.id = books_languages_link.lang_code \
LEFT OUTER JOIN data ON data.book = books.id \
LEFT OUTER JOIN books_series_link ON books.id = books_series_link.book \
LEFT OUTER JOIN series ON series.id = books_series_link.series \
LEFT OUTER JOIN books_publishers_link ON books.id = books_publishers_link.book \
LEFT OUTER JOIN publishers ON publishers.id = books_publishers_link.publisher \
WHERE books.id = ?",
/* STMT_BOOK_AUTHORS */
"SELECT authors.id, authors.name, books_authors_link.book as book \
FROM authors, books_authors_link WHERE books_authors_link.author = authors.id \
AND books_authors_link.book = ?",
/* STMT_BOOKS */
"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 ORDER BY id LIMIT ? OFFSET ?",
"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 ORDER BY id LIMIT ? OFFSET ?",
/* STMT_BOOKS_COUNT */
"SELECT count(id) FROM books",
/* STMT_BOOKS_AUTHORS */
"SELECT authors.id, authors.name, books_authors_link.book as book FROM authors, books_authors_link WHERE books_authors_link.author = authors.id AND books_authors_link.book IN ( SELECT id FROM books ORDER BY id LIMIT ? OFFSET ?)",
"SELECT authors.id, authors.name, books_authors_link.book as book \
FROM authors, books_authors_link WHERE books_authors_link.author = authors.id \
AND books_authors_link.book IN ( SELECT id FROM books ORDER BY id LIMIT ? OFFSET ?)",
};
/*
@ -97,6 +116,8 @@ db_book_free(Book *p)
void
db_book_adv_free(BookAdv *p)
{
if (NULL == p)
return;
db_book_unfill(&p->b);
for (size_t i = 0; i < p->asize; i++) {
db_author_unfill(p->a[i]);
@ -104,6 +125,34 @@ db_book_adv_free(BookAdv *p)
free(p);
}
void
db_book_full_unfill(BookFull *p)
{
if (NULL == p)
return;
free(p->isbn);
free(p->lccn);
free(p->path);
free(p->uuid);
free(p->lang);
free(p->format);
free(p->dataname);
free(p->publisher);
}
void
db_book_full_free(BookFull *p)
{
if (NULL == p)
return;
db_book_unfill(&p->ba.b);
for (size_t i = 0; i < p->ba.asize; i++) {
db_author_unfill(p->ba.a[i]);
}
db_book_full_unfill(p);
free(p);
}
static void
db_book_fill(Book *book, struct ksqlstmt *stmt)
{
@ -136,6 +185,27 @@ db_books_count(struct kreq *r)
return(count);
}
static void
db_assign_book_authors(struct bookauth *list)
{
struct bookauth *item = NULL;
struct bookauth *p = NULL;
p = list;
while (NULL != p) {
if (NULL != p->b && NULL == p->b->a && p->b->asize > 0) {
p->b->a = kcalloc(p->b->asize, sizeof(Author));
p->b->asize = 0; // use as counter for insert
}
p->b->a[p->b->asize] = p->a;// add author
p->b->asize++;
item = p;
p = p->p;
free(item);
}
}
int
db_books_load(struct kreq *r, BookAdv **books, int limit, int offset)
{
@ -184,28 +254,22 @@ db_books_load(struct kreq *r, BookAdv **books, int limit, int offset)
}
// assign authors to books
while (NULL != p) {
if (NULL != p->b && NULL == p->b->a && p->b->asize > 0) {
p->b->a = kcalloc(p->b->asize, sizeof(Author));
p->b->asize = 0; // use as counter for insert
}
p->b->a[p->b->asize] = p->a;// add author
p->b->asize++;
item = p;
p = p->p;
free(item);
}
db_assign_book_authors(p);
ksql_stmt_free(stmt);
return count;
}
Book *
BookFull *
db_book_load(struct kreq *r, int64_t id)
{
struct ksqlstmt *stmt;
Book *book;
struct bookauth *p = NULL;
struct bookauth *item = NULL;
BookFull *book;
fputs(stmts[STMT_BOOK], stderr);
ksql_stmt_alloc(r->arg, &stmt,
stmts[STMT_BOOK],
STMT_BOOK);
@ -214,9 +278,44 @@ db_book_load(struct kreq *r, int64_t id)
ksql_stmt_free(stmt);
return(NULL);
}
book = kcalloc(1, sizeof(Book));
db_book_fill(book, stmt);
fputs("stmt ok", stderr);
book = kcalloc(1, sizeof(BookFull));
db_book_fill(&book->ba.b, stmt);
book->timestamp = ksql_stmt_int(stmt, 5);
book->pubdate = ksql_stmt_int(stmt, 6);
book->isbn = kstrdup(ksql_stmt_str(stmt, 7));
book->lccn = kstrdup(ksql_stmt_str(stmt, 8));
book->path = kstrdup(ksql_stmt_str(stmt, 9));
book->uuid = kstrdup(ksql_stmt_str(stmt, 10));
book->has_cover = ksql_stmt_int(stmt, 11);
book->lang = kstrdup(ksql_stmt_str(stmt, 12));
book->format = kstrdup(ksql_stmt_str(stmt, 13));
book->dataname = kstrdup(ksql_stmt_str(stmt, 14));
book->unz_size = ksql_stmt_int(stmt, 15);
book->publisher = kstrdup(ksql_stmt_str(stmt, 16));
ksql_stmt_free(stmt);
ksql_stmt_alloc(r->arg, &stmt,
stmts[STMT_BOOK_AUTHORS],
STMT_BOOK_AUTHORS);
ksql_bind_int(stmt, 0, id);
while (KSQL_ROW == ksql_stmt_step(stmt)) {
item = kcalloc(1, sizeof(struct bookauth));
item->a = kcalloc(1, sizeof(Author));
item->a->id = ksql_stmt_int(stmt, 0);
item->a->name = kstrdup(ksql_stmt_str(stmt, 1));
item->b = &book->ba;
item->b->asize++;
item->p = p;
p = item;
}
// assign authors to book
db_assign_book_authors(p);
ksql_stmt_free(stmt);
return book;
}

20
extern.h
View File

@ -57,13 +57,31 @@ typedef struct
// TODO tags
} BookAdv;
typedef struct
{
BookAdv ba;
int64_t timestamp;
int64_t pubdate;
char *isbn;
char *lccn;
char *path;
char *uuid;
int64_t has_cover;
char *lang;
char *format;
char *dataname;
int64_t unz_size;
char *publisher;
} BookFull;
__BEGIN_DECLS
Book *db_book_load(struct kreq *r, int64_t id);
BookFull *db_book_load(struct kreq *r, int64_t id);
int db_books_load(struct kreq *r, BookAdv **books, int limit, int offset);
int db_books_count(struct kreq *r);
void db_book_free(Book *p);
void db_book_adv_free(BookAdv *p);
void db_book_full_free(BookFull *p);
void db_series_free(Series *p);

52
main.c
View File

@ -127,13 +127,49 @@ putbook(struct kjsonreq *req, Book *b)
}
}
static void
putauthors(struct kjsonreq *req, BookAdv *b)
{
if (b->asize > 0) {
kjson_arrayp_open(req, "authors");
for (size_t j=0; j<b->asize; j++) {
putauthor(req, b->a[j]);
kjson_obj_close(req);
}
kjson_array_close(req);
}
}
static void
putbookfull(struct kjsonreq *req, BookFull *b)
{
char tsstr[30];
char pubdatestr[30];
putbook(req, &b->ba.b);
kutil_epoch2str(b->timestamp, tsstr, sizeof(tsstr));
kutil_epoch2str(b->pubdate, pubdatestr, sizeof(pubdatestr));
kjson_putstringp(req, "timestamp", tsstr);
kjson_putstringp(req, "pubdate", pubdatestr);
kjson_putstringp(req, "isbn", b->isbn);
kjson_putstringp(req, "lccn", b->lccn);
kjson_putstringp(req, "path", b->path);
kjson_putstringp(req, "uuid", b->uuid);
kjson_putboolp(req, "has_cover", b->has_cover);
kjson_putstringp(req, "lang", b->lang);
kjson_putstringp(req, "format", b->format);
kjson_putstringp(req, "data", b->dataname);
kjson_putintp(req, "uncompressed_size", b->unz_size);
kjson_putstringp(req, "publisher", b->publisher);
}
static void
sendbooks(struct kreq *r)
{
struct kjsonreq req;
const char *errid;
int64_t id = -1;
Book *b = NULL;
BookFull *b = NULL;
int res, i = 0, page = 1, per = 20;
if (NULL != r->fieldmap[KEY_PAGE])
@ -152,9 +188,10 @@ sendbooks(struct kreq *r)
if (id >= 0 && NULL == b) {
puterror(&req, "Unknown book");
} else if (NULL != b) {
putbook(&req, b);
putbookfull(&req, b);
putauthors(&req, &b->ba);
kjson_obj_close(&req);
db_book_free(b);
db_book_full_free(b);
} else {
kjson_array_open(&req);
BookAdv **books = kcalloc(per, sizeof(BookAdv));
@ -162,14 +199,7 @@ sendbooks(struct kreq *r)
while (i < res) {
Book b = books[i]->b;
putbook(&req, &b);
if (books[i]->asize > 0) {
kjson_arrayp_open(&req, "authors");
for (size_t j=0; j<books[i]->asize; j++) {
putauthor(&req, books[i]->a[j]);
kjson_obj_close(&req);
}
kjson_array_close(&req);
}
putauthors(&req, books[i]);
kjson_obj_close(&req);
db_book_adv_free(books[i]);
i++;