1 files changed, 67 insertions, 0 deletions
diff --git a/lib/validation.rb b/lib/validation.rb
new file mode 100644
index 0000000..031b9e1
--- /dev/null
+++ b/lib/validation.rb
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+# All available validation types
+VALIDATION_TYPES = ["repeatedcrossvalidation", "leaveoneout", "crossvalidation", "regressioncrossvalidation"]
+
+# Get a list of ayll possible validation types
+# @param [Header] Accept one of text/uri-list, application/json
+# @return [text/uri-list] URI list of all validation types
+get "/api/validation/?" do
+  uri_list = VALIDATION_TYPES.collect{|validationtype| uri("/validation/#{validationtype}")}
+  case @accept
+  when "text/uri-list"
+    return uri_list.join("\n") + "\n"
+  when "application/json"
+    return uri_list.to_json
+  else
+    halt 400, "Mime type #{@accept} is not supported."
+  end
+end
+
+# Get a list of all validations 
+# @param [Header] Accept one of text/uri-list, application/json
+# @param [Path] Validationtype One of "repeatedcrossvalidation", "leaveoneout", "crossvalidation", "regressioncrossvalidation"
+# @return [text/uri-list] list of all validations of a validation type
+get "/api/validation/:validationtype/?" do
+  halt 400, "There is no such validation type as: #{params[:validationtype]}" unless VALIDATION_TYPES.include? params[:validationtype]
+  case params[:validationtype]
+  when "repeatedcrossvalidation"
+    validations = Validation::RepeatedCrossValidation.all
+  when "leaveoneout"
+    validations = Validation::LeaveOneOut.all
+  when "crossvalidation"
+    validations = Validation::CrossValidation.all
+  when "regressioncrossvalidation"
+    validations = Validation::RegressionCrossValidation.all
+  end
+
+  case @accept
+  when "text/uri-list"
+    uri_list = validations.collect{|validation| uri("/api/validation/#{params[:validationtype]}/#{validation.id}")}
+    return uri_list.join("\n") + "\n"
+  when "application/json"
+    validations = JSON.parse validations.to_json
+    validations.each_index do |idx|
+      validations[idx][:URI] = uri("/api/validation/#{params[:validationtype]}/#{validations[idx]["_id"]["$oid"]}")
+    end
+    return validations.to_json
+  else
+    halt 400, "Mime type #{@accept} is not supported."
+  end
+end
+
+# Get validation representation
+get "/api/validation/:validationtype/:id/?" do
+  halt 400, "There is no such validation type as: #{params[:validationtype]}" unless VALIDATION_TYPES.include? params[:validationtype]
+  case params[:validationtype]
+  when "repeatedcrossvalidation"
+    validation = Validation::RepeatedCrossValidation.find params[:id]
+  when "leaveoneout"
+    validation = Validation::LeaveOneOut.find params[:id]
+  when "crossvalidation"
+    validation = Validation::CrossValidation.find params[:id]
+  when "regressioncrossvalidation"
+    validation = Validation::RegressionCrossValidation.find params[:id]
+  end
+
+  halt 404, "#{params[:validationtype]} with id: #{params[:id]} not found." unless validation
+  return validation.to_json
+end