AuthorGrouping string // unique rendering of the author's name, used for internal grouping
AuthorReading string // reading order of author's name, e.g. "Charles Dickens"
AuthorSort string // sort order of author's name, e.g. "Dickens, Charles"
+ CoverId int // index into EFS table for cover, if there is one
DDC string // Dewey Decimal Classification
Description string // Back cover / inside flap blurb, describing the book
Genre string // e.g. "adventure", "historical", "mystery", "romance", "sf" (Science Fiction)
return g_db
}
+func niVal(ni sql.NullInt64) int {
+ if ni.Valid {
+ return int(ni.Int64)
+ }
+ return 0
+}
+
func nsVal(ns sql.NullString) string {
if ns.Valid {
return ns.String
}
func queryBooksByIds(ids []int) []Book {
- query := `SELECT s.age,a.grouping,a.reading,a.sort,c.ddc,b.description,s.genre,c.lcc,s.descr,b.title,b.volume
+ query := `SELECT s.age,a.grouping,a.reading,a.sort,b.cover,c.ddc,b.description,s.genre,c.lcc,s.descr,b.title,b.volume
FROM Authors a
INNER JOIN Books b ON a.id=b.author
LEFT OUTER JOIN Classifications c ON c.id=b.classification
row := ps.QueryRow(id)
var age, grouping, reading, sort, ddc, description, genre, lcc, name, title, volume sql.NullString
+ var cover sql.NullInt64
- err = row.Scan(&age, &grouping, &reading, &sort, &ddc, &description, &genre, &lcc, &name, &title, &volume)
+ err = row.Scan(&age, &grouping, &reading, &sort, &cover, &ddc, &description, &genre, &lcc, &name, &title, &volume)
if err != nil {
report("Error: Failed to read book:" + strconv.Itoa(id) + ":", err)
} else {
b.AuthorGrouping = nsVal(grouping)
b.AuthorReading = nsVal(reading)
b.AuthorSort = nsVal(sort)
+ b.CoverId = niVal(cover)
b.DDC = nsVal(ddc)
b.Description = nsVal(description)
b.Genre = nsVal(genre)
return res
}
+func queryBookPathById(id int) (string) {
+ query := "SELECT b.path FROM Books b WHERE b.id=$1"
+
+ ps, err := getDb().Prepare(query)
+ if nil != err {
+ report("Failed to Prepare query: " + query, err)
+ return ""
+ }
+ defer ps.Close()
+
+ row := ps.QueryRow(id)
+ var path sql.NullString
+ err = row.Scan(&path)
+ if nil != err {
+ report(fmt.Sprintf("Failed to retrieve path for book id %v: ", id), err)
+ return ""
+ }
+
+ return nsVal(path)
+}
+
func queryIds(criteria []SearchTerm) []int {
+ fmt.Println("queryIds():", criteria)
+
query := "SELECT b.id FROM Books b" +
" INNER JOIN Authors a ON a.id=b.author" +
- " LEFT OUTER JOIN Series s ON s.id=b.series"
+ " LEFT OUTER JOIN Series s ON s.id=b.series"
args := make([]interface{}, len(criteria))
args[i] = criterion.Text
}
+ query += " ORDER BY b.path"
+
res := []int{}
ps, err := getDb().Prepare(query)
}
defer rows.Close()
- for rows.Next(); rows.Next(); {
+ for rows.Next() {
var id int
rows.Scan(&id)
res = append(res, id)
return res
}
+func queryMimeTypeByEfsId(efsId int) string {
+ const query = "SELECT mimeType FROM Efs WHERE id=$1"
+
+ ps, err := getDb().Prepare(query)
+ if nil != err {
+ report("Failed to Prepare query: " + query, err)
+ return ""
+ }
+ defer ps.Close()
+
+ row := ps.QueryRow(efsId)
+ var mimeType sql.NullString
+ err = row.Scan(&mimeType)
+ if nil != err {
+ report(fmt.Sprintf("Failed to retrieve mimeType for id %v: ", efsId), err)
+ return ""
+ }
+
+ return nsVal(mimeType)
+}
+
func report(msg string, err error) {
fmt.Println("Error: " + msg, err)
}