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/* Copyright 2016 Software Freedom Conservancy Inc.
*
* This software is licensed under the GNU Lesser General Public License
* (version 2.1 or later). See the COPYING file in this distribution.
*/
public struct FaceLocationID {
public const int64 INVALID = -1;
public int64 id;
public FaceLocationID(int64 id = INVALID) {
this.id = id;
}
public bool is_invalid() {
return (id == INVALID);
}
public bool is_valid() {
return (id != INVALID);
}
}
public class FaceLocationRow {
public FaceLocationID face_location_id;
public FaceID face_id;
public PhotoID photo_id;
public string geometry;
}
public class FaceLocationTable : DatabaseTable {
private static FaceLocationTable instance = null;
private FaceLocationTable() {
set_table_name("FaceLocationTable");
Sqlite.Statement stmt;
int res = db.prepare_v2("CREATE TABLE IF NOT EXISTS "
+ "FaceLocationTable "
+ "("
+ "id INTEGER NOT NULL PRIMARY KEY, "
+ "face_id INTEGER NOT NULL, "
+ "photo_id INTEGER NOT NULL, "
+ "geometry TEXT"
+ ")", -1, out stmt);
assert(res == Sqlite.OK);
res = stmt.step();
if (res != Sqlite.DONE)
fatal("create FaceLocationTable", res);
}
public static FaceLocationTable get_instance() {
if (instance == null)
instance = new FaceLocationTable();
return instance;
}
public FaceLocationRow add(FaceID face_id, PhotoID photo_id, string geometry) throws DatabaseError {
Sqlite.Statement stmt;
int res = db.prepare_v2(
"INSERT INTO FaceLocationTable (face_id, photo_id, geometry) VALUES (?, ?, ?)",
-1, out stmt);
assert(res == Sqlite.OK);
res = stmt.bind_int64(1, face_id.id);
assert(res == Sqlite.OK);
res = stmt.bind_int64(2, photo_id.id);
assert(res == Sqlite.OK);
res = stmt.bind_text(3, geometry);
assert(res == Sqlite.OK);
res = stmt.step();
if (res != Sqlite.DONE)
throw_error("FaceLocationTable.add", res);
FaceLocationRow row = new FaceLocationRow();
row.face_location_id = FaceLocationID(db.last_insert_rowid());
row.face_id = face_id;
row.photo_id = photo_id;
row.geometry = geometry;
return row;
}
public Gee.List<FaceLocationRow?> get_all_rows() throws DatabaseError {
Sqlite.Statement stmt;
int res = db.prepare_v2(
"SELECT id, face_id, photo_id, geometry FROM FaceLocationTable",
-1, out stmt);
assert(res == Sqlite.OK);
Gee.List<FaceLocationRow?> rows = new Gee.ArrayList<FaceLocationRow?>();
for (;;) {
res = stmt.step();
if (res == Sqlite.DONE)
break;
else if (res != Sqlite.ROW)
throw_error("FaceLocationTable.get_all_rows", res);
// res == Sqlite.ROW
FaceLocationRow row = new FaceLocationRow();
row.face_location_id = FaceLocationID(stmt.column_int64(0));
row.face_id = FaceID(stmt.column_int64(1));
row.photo_id = PhotoID(stmt.column_int64(2));
row.geometry = stmt.column_text(3);
rows.add(row);
}
return rows;
}
public Gee.ArrayList<string> get_face_source_ids(FaceID face_id) {
Sqlite.Statement stmt;
int res = db.prepare_v2(
"SELECT photo_id FROM FaceLocationTable WHERE face_id = ?",
-1, out stmt);
assert(res == Sqlite.OK);
res = stmt.bind_int64(1, face_id.id);
assert(res == Sqlite.OK);
Gee.ArrayList<string> result = new Gee.ArrayList<string>();
for(;;) {
res = stmt.step();
if (res == Sqlite.DONE) {
break;
} else if (res != Sqlite.ROW) {
fatal("get_face_source_ids", res);
break;
}
result.add(PhotoID.upgrade_photo_id_to_source_id(PhotoID(stmt.column_int64(0))));
}
return result;
}
public string? get_face_source_serialized_geometry(Face face, MediaSource source)
throws DatabaseError {
Sqlite.Statement stmt;
int res = db.prepare_v2(
"SELECT geometry FROM FaceLocationTable WHERE face_id=? AND photo_id=?",
-1, out stmt);
assert(res == Sqlite.OK);
res = stmt.bind_int64(1, face.get_instance_id());
assert(res == Sqlite.OK);
res = stmt.bind_int64(2, ((Photo) source).get_instance_id());
assert(res == Sqlite.OK);
res = stmt.step();
if (res == Sqlite.DONE)
return null;
else if (res != Sqlite.ROW)
throw_error("FaceLocationTable.get_face_source_serialized_geometry", res);
return stmt.column_text(0);
}
public void remove_face_from_source(FaceID face_id, PhotoID photo_id) throws DatabaseError {
Sqlite.Statement stmt;
int res = db.prepare_v2(
"DELETE FROM FaceLocationTable WHERE face_id=? AND photo_id=?",
-1, out stmt);
assert(res == Sqlite.OK);
res = stmt.bind_int64(1, face_id.id);
assert(res == Sqlite.OK);
res = stmt.bind_int64(2, photo_id.id);
assert(res == Sqlite.OK);
res = stmt.step();
if (res != Sqlite.DONE)
throw_error("FaceLocationTable.remove_face_from_source", res);
}
public void update_face_location_serialized_geometry(FaceLocation face_location)
throws DatabaseError {
Sqlite.Statement stmt;
int res = db.prepare_v2("UPDATE FaceLocationTable SET geometry=? WHERE id=?", -1, out stmt);
assert(res == Sqlite.OK);
res = stmt.bind_text(1, face_location.get_serialized_geometry());
assert(res == Sqlite.OK);
res = stmt.bind_int64(2, face_location.get_face_location_id().id);
assert(res == Sqlite.OK);
res = stmt.step();
if (res != Sqlite.DONE)
throw_error("FaceLocationTable.update_face_location_serialized_geometry", res);
}
}
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