I'm trying to map tabular data into RDF using RML mapping.
I've figured out how to define and use prefixes for rr:constant definitions as indicated with the <<--- arrows in the code below. I've also figured out how to map column values using rr:template, as indicated with the <<<<<< arrow in the same code.
#prefix rr: <http://www.w3.org/ns/r2rml#>.
#prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>.
#prefix ex: <http://example.org/>.
[...]
:map_001 rr:predicateObjectMap [
rr:predicate rdf:type; # <<---
rr:objectMap [
rr:constant ex:MyClass; # <<---
rr:termType rr:IRI
]
];
rr:predicateObjectMap [
rr:predicate ex:myPredicate; # <<---
rr:objectMap [
rr:template "http://example.org/{some_column}" # <<<<<<
]
].
My question is: is it possible to somehow use prefixes in rr:template definitions, in order to not have to explicitly write the complete base URI? For example, I'd like to do something like what is shown below, although this clearly doesn't work:
:map_001 rr:predicateObjectMap [
rr:predicate ex:myPredicate;
rr:objectMap [
rr:template ex:"{some_column}" # <<--- DOESN'T WORK!
]
].
Is there any syntax for this, or is it simply not possible?
I applied the GREL expression "value.split(/a/)" to some cells:
abcdef -> [ "", "bcdef" ]
bcdefa -> [ "bcdef" ]
badef -> [ "b", "def" ]
I can't understand why the first cell gives me a "" element in the resulting table. Is it a bug?
Thanks!
I don't know Java enough to comment on the source code for this function, but according to one of the developers of Open Refine this behavior is normal (edit : More details in Owen's comment, below). This is why there are other functions to split a string.
value.smartSplit(/a/), for example, gives a more consistent result when sep is at the begining or at the end of the string:
row value value.smartSplit(/a/)
1. abcdef [ "", "bcdef" ]
2. bcdefa [ "bcdef", "" ]
3. badef [ "b", "def" ]
This is the same result as using partition() with the omitfragment = true option enabled:
row value value.partition(/a/, true)
1. abcdef [ "", "bcdef" ]
2. bcdefa [ "bcdef", "" ]
3. badef [ "b", "def" ]
A simple example:
If I type #"w" in style "area" how do I get an #"z"? (ex. "qwerty ww" -> "qzerty zz")
As you want the conversion on the fly, you can either modify R3-GUI before loading. So load r3-gui.r3 down to your local directory. Then you add the line if key == #"w" [key: #"z"] to the function do-text-key, so it looks like
do-text-key: funct [
"Process text face keyboard events."
face [object!]
event [event! object!]
key
] [
text-key-map/face: face
text-key-map/shift?: find event/flags 'shift
if no-edit: not tag-face? face 'edit [
key: any [select/skip text-key-map/no-edit key 2 key]
]
either char? key [
if key == #"w" [key: #"z"]
text-key-map/key: key
switch/default key bind text-key-map/chars 'event [
unless no-edit [
insert-text-face face key
]
]
] [
if find event/flags 'control [
key: any [select text-key-map/control key key]
]
text-key-map/key: key
switch/default key text-key-map/words [return event]
]
none
]
Probably the official way would be to use on-key wih Rebol3
load-gui
view [
a: area on-key [ ; arg: event
if arg/type = 'key [
if arg/key == #"w" [arg/key: #"z"]
]
do-actor/style face 'on-key arg face/style
]
]
And finally a way to do this with Rebol2 on the fly
key-event: func [face event] [
if event/type = 'key [
if all [event/key = #"w" ] [
append a/text #"z"
focus a
view w
return false
]
]
event
]
insert-event-func :key-event
view w: layout [
a: area
]
After reading some files of r3-gui (text-caret.r3, text-cursor.r3, text-edit.r3, text-keys.r3, text.r3) and the editor, I found a solution that allows me to insert not only a character but also string:
do %r3-gui.r3
insertText-moveCursor-updateFace: func [
face
string
n-move
][
insert-text-face face string
move-cursor face 'left n-move false
update-text-caret face
see-caret face
show-later face
]
i-m-u: :insertText-moveCursor-updateFace
view [
area on-key [
either arg/type = 'key [
switch/default arg/key [
#"w" [i-m-u face/names/text-box "z" 0]
#"[" [i-m-u face/names/text-box "[]" 1]
#"$" [i-m-u face/names/text-box "func [] []" 4]
] [
;switch/default
do-actor/style face 'on-key arg face/style
]
] [
;arg/type != 'key
do-actor/style face 'on-key arg face/style
]
]
]
Area is a compound styles. It is composed of a text-box and a scroller. They are contained in face/names.
it sure seems that there's no easy way to do this ... how can i ensure that certain fields in my multi match query going to actually be boosted correctly so that exact matches show up at the top?
i honestly seem to have tried this a multitude of ways, but maybe someone knows the answer ...
in my movie and music database, i'm trying to search multiple fields at once, but ensure that exact matches make it to the top and that certain fields such as title and artist name have more boost.
here's the main portion of my query...
"query": {
"bool": {
"should": [
{
"multi_match": {
"type": "phrase_prefix",
"query": "brave",
"max_expansions": 10,
"fields": [
"title^3",
"artists.name^2",
"starring.name^2",
"credits.name",
"tracks^0.1"
]
}
}
],
"minimum_number_should_match": 1
}
}
as you see, the query is 'brave'. it just so happens there's a movie called brave. perfect, i want it at the top - since not only is it an exact match, but the match is in the title. however, there's a popular song called 'brave' from sara bareilles which ends up on top. why?
i've tried every analyzer known to man, custom and otherwise, and i've tried changing the 'type' parameter to every other permutation (phrase, best_fields, cross_fields, most_fields), and it just doesn't seem to honor the fact that i'm effectively trying to either promote 'title' and 'artists.name' and 'starring.name' and DEMOTE 'tracks'.
is there any way i can ensure all exact matches show up at the top (especially in title, etc) followed by expansions, etc?
any suggestions would be helpful.
EDIT
the analyzer i'm currently using which seems to work better than others is a custom one i call 'nameAnalyzer' which is made up of a 'lowercase' filter and 'keyword' tokenizer only.
here's some example documents in the order in which they're appearing in the results:
fields": {
"title": [
"Brave"
],
"credits.name": [
"Kelly MacDonald",
"Emma Thompson",
"Billy Connolly",
"Julie Walters",
"Kevin McKidd",
"Craig Ferguson",
"Robbie Coltrane"
],
"starring.name": [
"Emma Thompson",
"Julie Walters",
"Billy Connolly",
"Kevin Mckidd",
"Kelly Macdonald"
]
,
fields": {
"credits.name": [
"Hilary Weeks",
"Scott Wiley",
"Sarah Sample",
"Debra Fotheringham",
"Dustin Christensen",
"Russ Dixon"
],
"title": [
"Say Love"
],
"artists.name": [
"Hilary Weeks"
],
"tracks": [
"Say Love",
"Another Second Chance",
"It's A Good Day",
"Brave",
"I Found Me",
"Hero",
"Tell Me",
"Where I Am",
"Better Promises",
"Even When"
]
,
fields": {
"title": [
"Brave Little Toaster"
],
"credits.name": [
"Randy Bennett",
"Jim Jackman",
"Randy Cook",
"Judy Toll",
"Jon Lovitz",
"Tim Stack",
"Timothy E. Day",
"Thurl Ravenscroft",
"Deanna Oliver",
"Phil Hartman",
"Jonathon Benair",
"Joe Ranft"
],
"starring.name": [
"Jon Lovitz",
"Thurl Ravenscroft",
"Tim Stack",
"Timothy E. Day",
"Deanna Oliver"
]
},
"fields": {
"title": [
"Braveheart"
],
"credits.name": [
"Bernard Horsfall",
"Martin Dempsey",
"James Robinson",
"Robert Paterson",
"Alan Tall",
"Rupert Vansittart",
"Donal Gibson",
"Malcolm Tierney",
"Sandy Nelson",
"Sean Lawlor"
],
"starring.name": [
"Brendan Gleeson",
"Sophie Marceau",
"Mel Gibson",
"Patrick Mcgoohan",
"Catherine Mccormack"
]
}
maybe someone knows why the second title ... (in this case not sara bareilles as i said before, but) Hillary Weeks - who has a track called 'brave' ... why is it before title 'braveheart' and 'brave little toaster'?
EDIT AGAIN
to further complicate the situation, what if i had a 'rank' field that was a part of my document? i'm finding it very difficult to add that to my _score field using a script score function...
"functions": [
{
"script_score": {
"script": "_score * 1/ doc['rank'].value"
}
}
]
I'm trying to add a field to a layout after it has been viewed
view/no-wait m: [field "hello"]
insert tail m 'field
insert tail m "hello"
update-face m
** Script error: update-face does not allow block! for its face argument
I want to update the whole layout, not just the field or some part of it. If I try to use
view m, it opens a new window. Do I just have to un-view it and then view again?
You can use the LAYOUT function in R3-GUI as well. See the example below:
view/no-wait m: layout [field "hello"]
;We need to get the BACKDROP container which is first sub-face in the WINDOW face
m: first faces? m
append-content m [
field "world"
]
do-events
Ofcourse there are also other ways how to handle layout content dynamically.
Try this example from Richard
REBOL [
Title: "Layouts example #20"
Author: "Richard Smolak"
Version: "$Id: layouts-20.r3 852 2010-10-07 13:28:26Z cyphre $"
]
stylize [
tbox: hpanel [
about: "Simple rectangular box."
facets: [
init-hint: 200x200
min-hint: 0x0
max-hint: guie/max-pair
break-after: 1
]
options: [
init-hint: [pair!]
]
actors: [
on-make: [
append face/options [
content: [
button "hello" on-action [print "hello"]
button "world" on-action [print "hello"]
]
]
do-actor/style face 'on-make none 'hpanel
]
]
draw: [
pen red
fill-pen blue
box 0x0 (viewport-box/bottom-right - 1)
]
]
]
view [
test: tbox
button "clear"
on-action [
clear-content test
]
button "set"
on-action [
set-content test [
button "test"
field "the best"
]
]
button "insert"
on-action [
insert-content test bind/set probe reduce [to-set-word copy/part random "abcdefgh" 2 'button join "button #" 1 + length? test/gob] 'system
]
button "append"
on-action [
append-content test reduce ['button join "button #" 1 + length? test/gob]
]
button "remove 2 faces at pos 3"
on-action [
remove-content/pos/part test 3 2
]
]
so the words you're looking for are append-content and insert-content which take a face and a block as parameters where the block contains the definition of another face.
I don't know view yet, but I have a hint. The first line sets "m" to the block [field "hello"]. Check to see what "update-face" expects...