From 9d97b1243a78e8703fefb2a1da2794a6434912c4 Mon Sep 17 00:00:00 2001
From: "Steinar H. Gunderson" <sesse@debian.org>
Date: Tue, 21 Aug 2007 07:12:06 +0200
Subject: [PATCH] Add model/lens fields to the images table, and make upgrade
 code to populate the fields. Also make update_image_info() populate them on
 new uploads etc.

The idea is to get rid of all SELECTs against exif_info, as EAV is quite evil
and is not needed in this case.
---
 perl/Sesse/pr0n/Common.pm | 21 +++++++++++++++++----
 sql/pr0n.sql              |  4 ++++
 sql/upgrade-v2.50.sql     | 15 +++++++++++++++
 3 files changed, 36 insertions(+), 4 deletions(-)

diff --git a/perl/Sesse/pr0n/Common.pm b/perl/Sesse/pr0n/Common.pm
index dcaf244..eff6fc1 100644
--- a/perl/Sesse/pr0n/Common.pm
+++ b/perl/Sesse/pr0n/Common.pm
@@ -244,10 +244,6 @@ sub update_image_info {
 	{
 		local $dbh->{AutoCommit} = 0;
 
-		$dbh->do('UPDATE images SET width=?, height=?, date=? WHERE id=?',
-			 undef, $width, $height, $datetime, $id)
-			or die "Couldn't update width/height in SQL: $!";
-
 		# EXIF information
 		$dbh->do('DELETE FROM exif_info WHERE image=?',
 			undef, $id)
@@ -262,6 +258,22 @@ sub update_image_info {
 				or die "Couldn't insert EXIF information in database: $!";
 		}
 
+		# Model/Lens
+		my $model = $exiftool->GetValue('Model', 'ValueConv');
+		my $lens = $exiftool->GetValue('Lens', 'ValueConv');
+		$lens = $exiftool->GetValue('LensSpec', 'ValueConv') if (!defined($lens));
+
+		$model =~ s/^\s*//;
+		$model =~ s/\s*$//;
+
+		$lens =~ s/^\s*//;
+		$lens =~ s/\s*$//;
+		
+		# Now update the main table with the information we've got
+		$dbh->do('UPDATE images SET width=?, height=?, date=?, model=?, lens=? WHERE id=?',
+			 undef, $width, $height, $datetime, $model, $lens, $id)
+			or die "Couldn't update width/height in SQL: $!";
+		
 		# Tags
 		my @tags = $exiftool->GetValue('Keywords', 'ValueConv');
 		$dbh->do('DELETE FROM tags WHERE image=?',
@@ -271,6 +283,7 @@ sub update_image_info {
 		$q = $dbh->prepare('INSERT INTO tags (image,tag) VALUES (?,?)')
 			or die "Couldn't prepare inserting tag information: $!";
 
+
 		for my $tag (@tags) {
 			$q->execute($id, guess_charset($tag))
 				or die "Couldn't insert tag information in database: $!";
diff --git a/sql/pr0n.sql b/sql/pr0n.sql
index 5fd04e7..d6af636 100644
--- a/sql/pr0n.sql
+++ b/sql/pr0n.sql
@@ -29,6 +29,8 @@ CREATE TABLE images (
     "date" timestamp without time zone,
     takenby character varying NOT NULL,
     selected boolean DEFAULT false,
+    model character varying,
+    lens character varying,
 
     FOREIGN KEY (vhost,event) REFERENCES events (vhost,event)
 );
@@ -71,6 +73,8 @@ CREATE TABLE users (
     vhost character varying NOT NULL
 );
 
+-- Mainly used for manual queries -- usually too slow to be very useful
+-- for web views in the long run.
 CREATE TABLE exif_info (
     image integer NOT NULL REFERENCES images (id) ON DELETE CASCADE,
     key varchar NOT NULL,
diff --git a/sql/upgrade-v2.50.sql b/sql/upgrade-v2.50.sql
index d59ee9e..99cc11d 100644
--- a/sql/upgrade-v2.50.sql
+++ b/sql/upgrade-v2.50.sql
@@ -31,3 +31,18 @@ ALTER TABLE deleted_images ALTER COLUMN width SET DEFAULT NULL;
 ALTER TABLE deleted_images ALTER COLUMN height SET DEFAULT NULL;
 UPDATE deleted_images SET width=NULL,height=NULL WHERE width=-1 OR height=-1;
 ALTER TABLE deleted_images ADD CONSTRAINT width_height_nullity CHECK ((width IS NULL) = (height IS NULL));
+
+-- model/lens denormalization (reduce usage of exif_info)
+ALTER TABLE images ADD COLUMN model varchar;
+ALTER TABLE images ADD COLUMN lens varchar;
+UPDATE images SET lens=COALESCE(
+    TRIM((
+        SELECT value FROM exif_info WHERE key='Lens' AND images.id=exif_info.image
+    )),
+    TRIM((
+        SELECT value FROM exif_info WHERE key='LensSpec' AND images.id=exif_info.image
+    ))
+), model=TRIM((
+    SELECT value FROM exif_info WHERE key='Model' AND images.id=exif_info.image
+));
+
-- 
2.39.2