blob: 9afa5c2669a8c924f8eeafcd55a33c12600fd553 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
|
=begin
* Name: feature.rb
* Description: Feature shims
* Author: Andreas Maunz <andreas@maunz.de>
* Date: 10/2012
=end
module OpenTox
# Shims for the feature class
class Feature
# Load a feature from URI
# @param [String] Feature URI
# @return [OpenTox::Feature] Feature object with the full data
def self.find(uri, subjectid=nil)
return nil unless uri
f = OpenTox::Feature.new uri, subjectid
f.get
f
end
# Load or create a feature given its title and metadata
# Create it if: a) not present, or b) present, but differs in metadata
# Newly created features are stored at the backend
# @param[String] title Feature title
# @param[Hash] metadata Feature metadata
# @return [OpenTox::Feature] Feature object with the full data, or nil
def self.find_by_title(title, metadata)
metadata[RDF.type] = [] unless metadata[RDF.type]
metadata[RDF.type] << RDF::OT.Feature unless metadata[RDF.type].include?(RDF::OT.Feature)
metadata[RDF::DC.title] = title unless (metadata[RDF::DC.title])
feature = feature_new = OpenTox::Feature.new(File.join($feature[:uri], SecureRandom.uuid), @subjectid)
feature_new.metadata = metadata
sparql = "SELECT DISTINCT ?feature WHERE { ?feature <#{RDF.type}> <#{RDF::OT['feature'.capitalize]}>. ?feature <#{RDF::DC.title}> '#{title.to_s}' }"
feature_uris = OpenTox::Backend::FourStore.query(sparql,"text/uri-list").split("\n")
features_equal = false # relevant also when no features found
feature_uris.each_with_index { |feature_uri,idx|
feature_existing = OpenTox::Feature.find(feature_uri, @subjectid)
if (feature_new.metadata.size+1 == feature_existing.metadata.size) # +1 due to title
features_equal = metadata.keys.collect { |predicate|
unless ( predicate == RDF::DC.title )
if feature_new[predicate].class == feature_existing[predicate].class
case feature_new[predicate].class.to_s
when "Array" then (feature_new[predicate].sort == feature_existing[predicate].sort)
else (feature_new[predicate] == feature_existing[predicate])
end
end
else
true
end
}.uniq == [true]
end
(feature=feature_existing and break) if features_equal
}
unless features_equal
feature_new.put
end
feature
end
# Find out feature type
# Classification takes precedence
# @return [String] Feature type
def feature_type
bad_request_error "rdf type of feature '#{@uri}' not set" unless self[RDF.type]
if self[RDF.type].include?(OT.NominalFeature)
"classification"
elsif self[RDF.type].include?(OT.NumericFeature)
"regression"
else
"unknown"
end
end
# Get accept values
# @param[String] Feature URI
# @return[Array] Accept values
def accept_values
accept_values = self[OT.acceptValue]
accept_values.sort if accept_values
accept_values
end
end
end
|
