Re: Large Object
От | Toby Doig |
---|---|
Тема | Re: Large Object |
Дата | |
Msg-id | 20030904152543.V34499@plum.flirble.org обсуждение исходный текст |
Ответ на | Large Object (Andreas Bauer <buki@gmx.net>) |
Список | pgsql-jdbc |
you did commit the transaction aftwards, right? dat.db.commit(); On Thu, 4 Sep 2003, Andreas Bauer wrote: > Hi, > > I don't want to annoy anyone, but I just can't write a large object. > Code: > File file = null; > FileInputStream fis = null; > try{file = new File("c:/testen/test.pdf"); > fis = new FileInputStream(file);}catch(Exception e){e.printStackTrace();} > try{ > dat.openDB(); > dat.db.setAutoCommit(false); > PreparedStatement ps = dat.db.prepareStatement("INSERT INTO blob_test VALUES > (?, ?)"); > ps.setString(1, file.getName()); > ps.setBinaryStream(2, fis, (int)file.length()); > ps.executeUpdate(); > System.out.println(ps.toString()); // shows: INSERT INTO blob_test VALUES > ('test.pdf, 390368) > ps.close();}catch(Exception e){e.printStackTrace();} > fis.close(); > > The table looks like this: > > CREATE TABLE blob_test ( > name varchar(35), > pdf oid > ); > > Some further questions. How can this funny number in the insert-statement > represent a > binary file? Is it right, that the file lying somewhere on the harddisk can > be written with > this setBinaryStream-command into a db lying on a server? > > Thanks in advance for any hint. > > Andi > > -- > COMPUTERBILD 15/03: Premium-e-mail-Dienste im Test > -------------------------------------------------- > 1. GMX TopMail - Platz 1 und Testsieger! > 2. GMX ProMail - Platz 2 und Preis-Qualitätssieger! > 3. Arcor - 4. web.de - 5. T-Online - 6. freenet.de - 7. daybyday - 8. e-Post > > > ---------------------------(end of broadcast)--------------------------- > TIP 8: explain analyze is your friend >
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