{"id":121,"date":"2011-07-22T09:18:44","date_gmt":"2011-07-22T08:18:44","guid":{"rendered":"http:\/\/iamwcew\/blog\/?p=121"},"modified":"2011-07-22T09:18:44","modified_gmt":"2011-07-22T08:18:44","slug":"121","status":"publish","type":"post","link":"https:\/\/gpmfactory.com\/index.php\/2011\/07\/22\/121\/","title":{"rendered":"Gestion des photos dans le task Flow User profile"},"content":{"rendered":"

Voici quelques observations concernant la gestion des photos li\u00e9es au task Flow User Profile (WebCenter).<\/p>\n

Lorsqu’une photo est t\u00e9l\u00e9charg\u00e9e \u00e0 partir du User profile task Flow<\/em>, celle-ci est enregistr\u00e9e, \u00e0 la fois dans le r\u00e9f\u00e9rentiel de WebCenter mais aussi dans l’annuaire LDAP.<\/p>\n

Au niveau du r\u00e9f\u00e9rentiel, l’image est enregistr\u00e9e dans son format original, puis fait l’objet de la cr\u00e9ation de deux variantes, l’une au format LARGE, et l’autre au format SMALL, chacune avec un coefficient de r\u00e9duction appropri\u00e9. C’est la table WC_PEOPLE_CONN_PROFILE_PHOTO<\/span> qui constitue le container de stockage<\/p>\n

Le format LARGE est utilis\u00e9 dans l’affichage du user profile<\/em>, tandis que le format SMALL est utilis\u00e9 pour la repr\u00e9sentation du user<\/em> dans le r\u00e9sum\u00e9 de son profile<\/em>. Il existe d’autres cat\u00e9gories de taille (MEDIUM, INCON32) qui peuvent \u00eatre construites \u00e0 la vol\u00e9e si, par exemple, une action de l’utilisateur en entraine la n\u00e9cessit\u00e9. Par exemple, si un utilisateur ajoute un commentaire sur l’activity stream<\/em>, sa photo apparaitra en regard de son commentaire. Ici, c’est le format ICON32 qui est utilis\u00e9, et qui aura \u00e9t\u00e9 pr\u00e9alablement cr\u00e9\u00e9 \u00e0 la vol\u00e9e, puis stock\u00e9 dans la table.<\/p>\n

A propos de l’annuaire LDAP il semble que, \u00e0 l’issue d’un t\u00e9l\u00e9chargement depuis le Task Flow<\/em>, la photo soit syst\u00e9matiquement enregistr\u00e9e dans l’annuaire dans l’attribut jpegPhoto<\/span>. C’est le format original<\/em> qui est retenu. Comme OVD intercepte les requ\u00eates LDAP, il suffira de neutraliser l’\u00e9criture de cet attribut.<\/p>\n

A titre d’exemple, les valeurs de tailles suivantes on \u00e9t\u00e9 observ\u00e9es dans la table\u00a0:<\/p>\n

\n\n\n\n\n\n\n<\/colgroup>\n\n\n\n\n\n\n
Echantillon<\/td>\n\n

Taille Originale (Ko)<\/p>\n<\/td>\n

\n

Taille LARGE
\n(Ko)<\/p>\n<\/td>\n

\n

Taille SMALL
\n(Ko)<\/p>\n<\/td>\n

\n

Taille ICON32
\n(Ko)<\/p>\n<\/td>\n<\/tr>\n

Sample1.png<\/td>\n5,89<\/td>\n57<\/td>\n7<\/td>\n<\/td>\n<\/tr>\n
Sample2.jpg<\/td>\n1100<\/td>\n10<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
Sample3.jpg<\/td>\n169<\/td>\n19<\/td>\n3<\/td>\n<\/td>\n<\/tr>\n
Sample4.jpg<\/td>\n408<\/td>\n83<\/td>\n7,8<\/td>\n3<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

 <\/p>\n

On constate que les coefficients de r\u00e9duction sont extr\u00eamement variables d’un \u00e9chantillon \u00e0 l’autre. Dans le cas du premier, la taille apr\u00e8s conversion est plus importante parce qu’il y a eu un agrandissement de la taille. En effet, les photos sont syst\u00e9matiquement caibr\u00e9es \u00e0 une largeur de 200px environ.
\nVoici une estimation de l’espace disque qui sera n\u00e9cessaire pour le stockage des photos, en fonction d’hypoth\u00e8ses sur le format et la taille individuelle des photos t\u00e9l\u00e9charg\u00e9es.<\/p>\n

 <\/p>\n

\n\n\n\n\n\n\n\n\n\n\n<\/colgroup>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
ESTIMATION TAILLE DISQUE POUR STOCKER LES PHOTOS du USER PROFILE<\/span><\/td>\n<\/tr>\n
20\/07\/2011 – V0.1<\/span><\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
\u00a0<\/strong><\/span><\/td>\nCoef reduction \/
\nOriginal<\/strong><\/span><\/td>\n		\n

Format & Taille de la photo<\/strong><\/span><\/p>\n<\/td>\n<\/tr>\n

\u00a0<\/strong><\/span><\/td>\n\u00a0<\/span><\/td>\nBMP 1M<\/span><\/td>\nJPEG 5Mo<\/span><\/td>\nJPEG 3Mo<\/span><\/td>\nJPEG 200K<\/span><\/td>\n<\/tr>\n
Proportion \/ tranche<\/strong><\/span><\/td>\n\u00a0<\/span><\/td>\n\n

5%<\/span><\/p>\n<\/td>\n

\n

20%<\/span><\/p>\n<\/td>\n

\n

60%<\/span><\/p>\n<\/td>\n

\n

15%<\/span><\/p>\n<\/td>\n<\/tr>\n

Original (en octets)<\/strong><\/span><\/td>\n\u00a0<\/span><\/td>\n\n

1 000 000<\/span><\/p>\n<\/td>\n

\n

5 000 000<\/span><\/p>\n<\/td>\n

\n

3 000 000<\/span><\/p>\n<\/td>\n

\n

200 000<\/span><\/p>\n<\/td>\n<\/tr>\n

Large (en octets)<\/strong><\/span><\/td>\n\n

10<\/span><\/p>\n<\/td>\n

\n

100 000<\/span><\/p>\n<\/td>\n

\n

500 000<\/span><\/p>\n<\/td>\n

\n

300 000<\/span><\/p>\n<\/td>\n

\n

20 000<\/span><\/p>\n<\/td>\n<\/tr>\n

Small (en octets)<\/strong><\/span><\/td>\n\n

20<\/span><\/p>\n<\/td>\n

\n

50 000<\/span><\/p>\n<\/td>\n

\n

250 000<\/span><\/p>\n<\/td>\n

\n

150 000<\/span><\/p>\n<\/td>\n

\n

10 000<\/span><\/p>\n<\/td>\n<\/tr>\n

Total<\/strong><\/span><\/td>\n\u00a0<\/span><\/td>\n\n

1 150 000<\/span><\/p>\n<\/td>\n

\n

5 750 000<\/span><\/p>\n<\/td>\n

\n

3 450 000<\/span><\/p>\n<\/td>\n

\n

230 000<\/span><\/p>\n<\/td>\n<\/tr>\n

Nb users cible:<\/strong><\/span><\/td>\n\n

100 000<\/span><\/p>\n<\/td>\n

\u00a0<\/span><\/td>\n\u00a0<\/span><\/td>\n\u00a0<\/span><\/td>\n\u00a0<\/span><\/td>\n<\/tr>\n
Nb users \/ tranche<\/strong><\/span><\/td>\n\u00a0<\/span><\/td>\n\n

5 000<\/span><\/p>\n<\/td>\n

\n

20 000<\/span><\/p>\n<\/td>\n

\n

60 000<\/span><\/p>\n<\/td>\n

\n

15 000<\/span><\/p>\n<\/td>\n<\/tr>\n

Taille \/ cat\u00e9gorie<\/strong><\/span><\/td>\n\u00a0<\/span><\/td>\n\n

5,75<\/span><\/p>\n<\/td>\n

\n

115,00<\/span><\/p>\n<\/td>\n

\n

207,00<\/span><\/p>\n<\/td>\n

\n

3,45<\/span><\/p>\n<\/td>\n<\/tr>\n

Taille Totale en Go<\/strong><\/span><\/td>\n\n

331,20<\/strong><\/span><\/p>\n<\/td>\n

\u00a0<\/span><\/td>\n\u00a0<\/span><\/td>\n\u00a0<\/span><\/td>\n\u00a0<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

 <\/p>\n

 <\/p>\n

Remarque\u00a0: Il faudra intervenir sur les caract\u00e9ristiques des segments database utilis\u00e9es par la table, et ne pas laisser les valeurs par d\u00e9faut<\/strong>.<\/p>\n","protected":false},"excerpt":{"rendered":"

Voici quelques observations concernant la gestion des photos li\u00e9es au task Flow User Profile (WebCenter). Lorsqu’une photo est t\u00e9l\u00e9charg\u00e9e \u00e0 partir du User profile…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20],"tags":[53,58,81,108],"ppma_author":[150],"class_list":["post-121","post","type-post","status-publish","format-standard","hentry","category-white-paper","tag-etude-2","tag-image","tag-profile","tag-webcenter"],"authors":[{"term_id":150,"user_id":1,"is_guest":0,"slug":"admin8700","display_name":"Patrick","avatar_url":"https:\/\/secure.gravatar.com\/avatar\/209d5ed69b74d288390621ab4c1d3773?s=96&d=mm&r=g","0":null,"1":"","2":"","3":"","4":"","5":"","6":"","7":"","8":""}],"_links":{"self":[{"href":"https:\/\/gpmfactory.com\/index.php\/wp-json\/wp\/v2\/posts\/121","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gpmfactory.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gpmfactory.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gpmfactory.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/gpmfactory.com\/index.php\/wp-json\/wp\/v2\/comments?post=121"}],"version-history":[{"count":0,"href":"https:\/\/gpmfactory.com\/index.php\/wp-json\/wp\/v2\/posts\/121\/revisions"}],"wp:attachment":[{"href":"https:\/\/gpmfactory.com\/index.php\/wp-json\/wp\/v2\/media?parent=121"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gpmfactory.com\/index.php\/wp-json\/wp\/v2\/categories?post=121"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gpmfactory.com\/index.php\/wp-json\/wp\/v2\/tags?post=121"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/gpmfactory.com\/index.php\/wp-json\/wp\/v2\/ppma_author?post=121"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}