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Fix ancient error in large objects usage example: overwrite() subroutine
was opening with INV_READ flag and then writing. Prior to 8.1 the backend did not reject this, but now it does.
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@ -1,5 +1,5 @@
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<!--
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$PostgreSQL: pgsql/doc/src/sgml/lobj.sgml,v 1.37 2005/06/13 02:26:46 tgl Exp $
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$PostgreSQL: pgsql/doc/src/sgml/lobj.sgml,v 1.38 2006/03/02 21:49:09 tgl Exp $
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-->
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<chapter id="largeObjects">
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@ -527,7 +527,7 @@ overwrite(PGconn *conn, Oid lobjId, int start, int len)
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int nwritten;
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int i;
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lobj_fd = lo_open(conn, lobjId, INV_READ);
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lobj_fd = lo_open(conn, lobjId, INV_WRITE);
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if (lobj_fd < 0)
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{
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fprintf(stderr, "can't open large object %d\n",
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@ -553,7 +553,8 @@ overwrite(PGconn *conn, Oid lobjId, int start, int len)
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}
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/*
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* exportFile * export large object "lobjOid" to file "out_filename"
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* exportFile
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* export large object "lobjOid" to file "out_filename"
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*
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*/
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void
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@ -566,7 +567,7 @@ exportFile(PGconn *conn, Oid lobjId, char *filename)
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int fd;
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/*
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* create an inversion "object"
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* open the large object
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*/
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lobj_fd = lo_open(conn, lobjId, INV_READ);
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if (lobj_fd < 0)
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@ -586,7 +587,7 @@ exportFile(PGconn *conn, Oid lobjId, char *filename)
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}
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/*
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* read in from the Unix file and write to the inversion file
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* read in from the inversion file and write to the Unix file
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*/
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while ((nbytes = lo_read(conn, lobj_fd, buf, BUFSIZE)) > 0)
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{
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@ -8,7 +8,7 @@
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*
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*
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* IDENTIFICATION
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* $PostgreSQL: pgsql/src/test/examples/testlo.c,v 1.25 2004/12/31 22:03:58 pgsql Exp $
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* $PostgreSQL: pgsql/src/test/examples/testlo.c,v 1.26 2006/03/02 21:49:09 tgl Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -113,7 +113,7 @@ overwrite(PGconn *conn, Oid lobjId, int start, int len)
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int nwritten;
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int i;
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lobj_fd = lo_open(conn, lobjId, INV_READ);
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lobj_fd = lo_open(conn, lobjId, INV_WRITE);
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if (lobj_fd < 0)
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fprintf(stderr, "can't open large object %u", lobjId);
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@ -156,7 +156,7 @@ exportFile(PGconn *conn, Oid lobjId, char *filename)
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int fd;
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/*
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* create an inversion "object"
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* open the large object
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*/
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lobj_fd = lo_open(conn, lobjId, INV_READ);
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if (lobj_fd < 0)
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@ -173,7 +173,7 @@ exportFile(PGconn *conn, Oid lobjId, char *filename)
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}
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/*
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* read in from the Unix file and write to the inversion file
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* read in from the inversion file and write to the Unix file
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*/
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while ((nbytes = lo_read(conn, lobj_fd, buf, BUFSIZE)) > 0)
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{
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