development merged, git links in FAQ.md fixed1.4.0

1 files changed, 33 insertions, 0 deletions

diff --git a/lib/dataset.rb b/lib/dataset.rb
new file mode 100644
index 0000000..51407ca
--- /dev/null
+++ b/lib/dataset.rb
@@ -0,0 +1,33 @@
+# Get all datasets
+get "/api/dataset/?" do
+  datasets = Dataset.all #.limit(100)
+  case @accept
+  when "application/json"
+    list = datasets.collect{|dataset| uri("/api/dataset/#{dataset.id}")}.to_json
+    return list
+  else
+    halt 400, "Mime type #{@accept} is not supported."
+  end
+end
+
+# Get a dataset
+get "/api/dataset/:id/?" do
+  dataset = Dataset.find :id => params[:id]
+  halt 400, "Dataset with id: #{params[:id]} not found." unless dataset
+  case @accept
+  when "text/csv", "application/csv"
+    return File.read dataset.source
+  else
+    bad_request_error "Mime type #{@accept} is not supported."
+  end
+end
+
+# Get a dataset attribute. One of compounds, nanoparticles, substances, features 
+get "/api/dataset/:id/:attribute/?" do
+  dataset = Dataset.find :id => params[:id]
+  halt 400,  "Dataset with id: #{params[:id]} not found." unless dataset
+  attribs = ["compounds", "nanoparticles", "substances", "features"]
+  return "Attribute '#{params[:attribute]}' is not available. Choose one of #{attribs.join(', ')}." unless attribs.include? params[:attribute]
+  out = dataset.send("#{params[:attribute]}")
+  return out.to_json
+end