//Index returns a list of italian cities, filtered by the prefix header and the maximum
//number returned controlled by the max parameter.
func (STATELESS *ItalianCitiesResource) Index(headers map[string]string,
qp map[string]string) (string, *seven5.Error) {
result := []*ItalianCity{}
prefix, hasPrefix := headers["Prefix"] //note the capital is always there on headers
maxStr, hasMax := qp["max"]
var max int
var err error
if hasMax {
if max, err = strconv.Atoi(maxStr); err != nil {
return seven5.BadRequest(fmt.Sprintf("can't undestand max parameter %s", maxStr))
}
}
for _, v := range cityData {
if hasPrefix && !strings.HasPrefix(string(v.Name), prefix) {
continue
}
result = append(result, v)
if hasMax && len(result) == max {
break
}
}
return seven5.JsonResult(result, true)
}
//given an id, find the object it referencs and return JSON for it. This ignores
//the query parameters but understands the header 'Round' for rounding pop figures to
//100K boundaries.
func (STATELESS *ItalianCityResource) Find(id seven5.Id, hdrs map[string]string,
query map[string]string) (string, *seven5.Error) {
r, hasRound := hdrs["Round"] //note the capital is always there on headers
n := int64(id)
if n < 0 || n >= int64(len(cityData)) {
return seven5.BadRequest(fmt.Sprintf("id must be from 0 to %d", len(cityData)-1))
}
pop := cityData[id].Population
if hasRound && strings.ToLower(r) == "true" {
excess := cityData[id].Population % 100000
pop -= excess
if excess >= 50000 {
pop += 100000
}
}
data := cityData[id]
forClient := &ItalianCity{data.Id, data.Name, pop, data.Province, data.Location}
return seven5.JsonResult(forClient, true)
}