// GetFilesByKeyword returns a set of schema.org JSON elements for datasets
// that match the keyword. This likely should be converted to a ?q= format.
func GetFilesByKeyword(request *restful.Request, response *restful.Response) {
keyword := request.PathParameter("keyword")
session, err := connectors.GetMongoCon()
if err != nil {
log.Printf("ERROR: %v", err)
}
defer session.Close()
// Optional. Switch the session to a monotonic behavior.
session.SetMode(mgo.Monotonic, true)
c := session.DB("test").C("schemaorg")
var results []structs.SchemaOrgMetadata
err = c.Find(bson.M{"$text": bson.M{"$search": keyword}}).All(&results)
if err != nil {
log.Printf("Error calling for GetFilesByKeyword: %v", err)
results = nil
}
resultSet, err := json.Marshal(results)
if err != nil {
log.Printf("ERROR: %v", err)
}
response.Write([]byte(resultSet))
}
func GetFileByName(request *restful.Request, response *restful.Response) {
filename := request.PathParameter("filename")
// call mongo and lookup the redirection to use...
session, err := connectors.GetMongoCon()
if err != nil {
log.Print(err)
}
defer session.Close()
// Optional. Switch the session to a monotonic behavior.
mongodb := session.DB("test")
// Get the file
file, _ := mongodb.GridFS("fs").Open(filename)
buf := make([]byte, file.Size())
fileBuf, err := file.Read(buf)
// Build the CSV header from the CSVW metadata (since we don't store it in the file)
c := mongodb.C("csvwmeta")
result := CSVWMeta{} // need this struct (it's everywhere. what can I do about that? move only ocdServices from ocdWeb?)
err = c.Find(bson.M{"dc_title": filename}).One(&result)
if err != nil {
log.Printf("URL lookup error: %v", err)
}
var buffer bytes.Buffer
// put the column heading in.. // todo.. this could be a switch in the URL that puts headers on or not.
for key, column := range result.TableSchema.Columns {
buffer.WriteString(fmt.Sprintf("%s", column.Name))
if key+1 < len(result.TableSchema.Columns) {
buffer.WriteString(fmt.Sprintf("\t"))
}
}
buffer.WriteString("\n")
// err = c.Find(bson.M{"measure": vars["measurements"], "leg": vars["leg"]}).One(&results)
if err != nil {
log.Printf("Error in GetFileByName: %v length %d", err, fileBuf)
}
fullPackage := buffer.String() + string(buf)
log.Printf("\n%s", fullPackage)
response.AddHeader("Content-Disposition", "inline; filename=\"ocdDataFile.csv\"")
response.Write([]byte(fullPackage)) // this seems a convoluted way to get this point.. cating a byte.buffer and []byte
}
func SampleInfo(request *restful.Request, response *restful.Response) {
session, err := connectors.GetMongoCon()
if err != nil {
log.Print(err)
}
defer session.Close()
// session.SetMode(mgo.Monotonic, true)
c := session.DB("test").C("csdco")
var results []Sample
err = c.Find(bson.M{}).All(&results) // change to only those with WKT entry? There are some without
if err != nil {
log.Printf("Error calling for all expeditions: %v", err)
}
}
func GetFileByUUID(request *restful.Request, response *restful.Response) {
UUID := request.PathParameter("UUID")
format := request.PathParameter("format")
URI := fmt.Sprintf("http://opencoredata.org/id/dataset/%s", UUID)
// call mongo and lookup the redirection to use...
session, err := connectors.GetMongoCon()
if err != nil {
log.Print(err)
}
defer session.Close()
// case switch this area (scoping a response for each one) on CSVMETA, SCHEMAORG, JSON (and CSV?)
switch format {
case "CSV":
c := session.DB("test").C("schemaorg")
result := SchemaOrgMetadata{} // need this struct (it's everywhere. what can I do about that? move only ocdServices from ocdWeb?)
err = c.Find(bson.M{"url": URI}).One(&result)
if err != nil {
log.Printf("URL lookup error: %v", err)
}
filename := result.Name // the file name
// can I just 303 now to the download? Perhaps I shouldn't in case some client don't follow
mongodb := session.DB("test")
file, _ := mongodb.GridFS("fs").Open(filename)
buf := make([]byte, file.Size())
fileBuf, err := file.Read(buf)
if err != nil {
log.Printf("Error calling aggregation_janusURLSet : %v length %d", err, fileBuf)
}
response.AddHeader("Content-Disposition", "inline; filename=\"ocdDataFile.csv\"")
response.Write(buf)
case "JSON":
c := session.DB("test").C("schemaorg")
result := SchemaOrgMetadata{} // need this struct (it's everywhere. what can I do about that? move only ocdServices from ocdWeb?)
err = c.Find(bson.M{"url": URI}).One(&result)
if err != nil {
log.Printf("URL lookup error: %v", err)
}
// context setting hack
// result.Context = ` "opencore": "http://opencoredata.org/voc/1/", "glview": "http://geolink.org/view/1/", "schema": "http://schema.org/"`
result.Context = "http://schema.org"
jsonldtext, _ := json.MarshalIndent(result, "", " ") // results as embeddale JSON-LD
if err != nil {
log.Printf("Error calling in GetFileBuyUUID : %v ", err)
}
response.Write(jsonldtext)
case "DATACITE": // case "Datacite": // ref: https://golang.org/src/encoding/xml/example_test.go
c := session.DB("test").C("schemaorg")
result := SchemaOrgMetadata{} // need this struct (it's everywhere. what can I do about that? move only ocdServices from ocdWeb?)
err = c.Find(bson.M{"url": URI}).One(&result)
if err != nil {
log.Printf("URL lookup error: %v", err)
}
xmltext, _ := xml.MarshalIndent(result, "", " ") // results as XML
if err != nil {
log.Printf("Error calling in GetFileBuyUUID : %v ", err)
}
response.Write(xmltext)
case "CSVW":
c := session.DB("test").C("csvwmeta")
result := CSVWMeta{} // need this struct (it's everywhere. what can I do about that? move only ocdServices from ocdWeb?)
err = c.Find(bson.M{"url": URI}).One(&result)
if err != nil {
log.Printf("URL lookup error: %v", err)
}
// result.Context = ` "opencore": "http://opencoredata.org/voc/1/", "glview": "http://geolink.org/view/1/", "schema": "http://schema.org/"`
// needs to be: "@context": ["http://www.w3.org/ns/csvw", {"@language": "en"}],
result.Context = "http://www.w3.org/ns/csvw"
jsonldtext, _ := json.MarshalIndent(result, "", " ") // results as embeddale CSVW JSON-LD
if err != nil {
log.Printf("Error calling in GetFileBuyUUID : %v ", err)
}
response.Write(jsonldtext)
}
}