Work in progress

server.go

@@ -36,7 +36,7 @@ import (
 var db *sql.DB
 
 func executeQuery(rw http.ResponseWriter, req *http.Request) {
-	var request jsonRequest
+	var request jsonQueryRequest
 	if err := json.NewDecoder(req.Body).Decode(&request); err != nil {
 		http.Error(rw, err.Error(), http.StatusInternalServerError)
 		return
@@ -49,6 +49,9 @@ func executeQuery(rw http.ResponseWriter, req *http.Request) {
 	}
 
 	context := queryContext{geo, convertFeatures(request.Profile), request.WalkingDist}
+	entries := getRecords(context)
+
+	foundEntries := findRecords(entries, featureMap(request.Features), request.MinScore)
 
 	// function runQuery(query, callback) {
 	//     query.profile  = fixupProfile(query.profile);

types.go

@@ -35,7 +35,7 @@ type jsonGeo struct {
 	Valid     bool    `json:"valid"`
 }
 
-type jsonRequest struct {
+type jsonQueryRequest struct {
 	Features    jsonFeatureMap `json:"features"`
 	Geo         *jsonGeo       `json:"geo"`
 	HintSteps   int            `json:"hintSteps"`
@@ -46,6 +46,38 @@ type jsonRequest struct {
 	WalkingDist float64        `json:"walkingDist"`
 }
 
+type jsonColumn struct {
+	Hints []jsonProjection `json:"hints"`
+	Steps int              `json:"steps"`
+	Value float64          `json:"value"`
+}
+
+type jsonProjection struct {
+	Sample float64   `json:"sample"`
+	Stats  jsonStats `json:"stats"`
+}
+
+type jsonStats struct {
+	Compatibility float64 `json:"compatibility"`
+	Count         int     `json:"count"`
+}
+
+type jsonRecord struct {
+	Name           string  `json:"name"`
+	Score          float64 `json:"score"`
+	DistanceToUser float64 `json:"distanceToUser"`
+	DistanceToStn  float64 `json:"distanceToStn"`
+	ClosestStn     string  `json:"closestStn"`
+	AccessCount    int     `json:"accessCount"`
+	Id             int     `json:"id"`
+}
+
+type jsonQueryResponse struct {
+	Columns map[string]jsonColumn `json:"columns"`
+	Count   int                   `json:"count"`
+	Items   []jsonRecord          `json:"items"`
+}
+
 type jsonCategory struct {
 	Description string `json:"description"`
 	Id          int    `json:"id"`
@@ -97,6 +129,7 @@ type geoContext struct {
 
 type record struct {
 	accessCount    int
+	closestStn     string
 	compatibility  float64
 	distanceToStn  float64
 	distanceToUser float64
@@ -105,6 +138,7 @@ type record struct {
 	id             int
 	name           string
 	score          float64
+	url            string
 }
 
 type records []record

util.go

@@ -78,14 +78,15 @@ func stepRange(bounds queryBounds, steps int, callback func(float64)) {
 	}
 }
 
-func findRecords(entries records, features featureMap, minScore float64) {
+func findRecords(entries records, features featureMap, minScore float64) records {
-	var foundRecords records
+	var foundEntries records
 
 	walkMatches(entries, features, minScore, func(record record, score float64) {
-		foundRecords = append(foundRecords, record)
+		foundEntries = append(foundEntries, record)
 	})
 
-	sort.Sort(foundRecords)
+	sort.Sort(foundEntries)
+	return foundEntries
 }
 
 func project(entries records, features featureMap, featureName string, minScore float64, bounds queryBounds, steps int) []queryProjection {
@@ -191,3 +192,33 @@ func computeRecordPopularity(entries records, context queryContext) {
 		record.features["compatibility"] = compatibility
 	}
 }
+
+func getRecords(context queryContext) records {
+	rows, err := db.Query("SELECT name, url, delicious, accomodating, affordable, atmospheric, latitude, longitude, distanceToStn, closestStn, accessCount, id FROM reviews")
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	var entries []record
+	for rows.Next() {
+		var name, url, closestStn string
+		var delicious, accomodating, affordable, atmospheric, latitude, longitude, distanceToStn float64
+		var accessCount, id int
+
+		rows.Scan(&name, &url, &delicious, &accomodating, &affordable, &atmospheric, &latitude, &longitude, &distanceToStn, &closestStn, &accessCount, &id)
+
+		entry := record{name: name, url: url, distanceToStn: distanceToStn, closestStn: closestStn, accessCount: accessCount, id: id}
+		entry.features["delicious"] = delicious
+		entry.features["accomodating"] = accomodating
+		entry.features["affordable"] = affordable
+		entry.features["atmospheric"] = atmospheric
+		entry.geo = geoContext{latitude, longitude}
+
+		entries = append(entries, entry)
+	}
+	if err := rows.Err(); err != nil {
+		log.Fatal(err)
+	}
+
+	return entries
+}