func (p *ParseClass) resolvePointer(ctx context.Context, r resolver.Resolver, field *graphql.Field) (interface{}, error) {
fieldName := field.Name
fieldInfo := p.class.Fields[fieldName]
pc, err := NewParseClass(p.client, fieldInfo.TargetClass, p.schema)
if err != nil {
return nil, err
}
// only resolve if we can obtain the objectId
data, ok := p.Data[fieldName]
if !ok {
return nil, nil
}
asMap, ok := data.(map[string]interface{})
if !ok {
return nil, nil
}
oid := asMap["objectId"]
if oid == nil {
return nil, nil
}
objectID, ok := oid.(string)
if !ok {
return nil, nil
}
if t, ok := tracer.FromContext(ctx); ok {
t.IncQueries(1)
}
err = pc.client.GetClass(fieldInfo.TargetClass, objectID, &pc.Data)
return pc, err
}
// ServeHTTP provides an entrypoint into a graphql executor. It pulls the query from
// the 'q' GET parameter.
func (h *ExecutorHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "application/json")
w.Header().Set("Access-Control-Allow-Origin", "*")
w.Header().Set("Access-Control-Allow-Headers", r.Header.Get("Access-Control-Request-Headers"))
if r.Method == "OPTIONS" {
w.WriteHeader(200)
return
}
//TODO(tmc): reject non-GET/OPTIONS requests
q := r.URL.Query().Get("q")
log.Println("query:", q)
operation, err := parser.ParseOperation([]byte(q))
if err != nil {
log.Println("error parsing:", err)
writeErr(w, err)
return
}
// if err := h.validator.Validate(operation); err != nil { writeErr(w, err); return }
ctx := context.Background()
if r.Header.Get("X-Trace-ID") != "" {
t, err := tracer.FromRequest(r)
if err == nil {
ctx = tracer.NewContext(ctx, t)
}
}
ctx = context.WithValue(ctx, "http_request", r)
if r.Header.Get("X-GraphQL-Only-Parse") == "1" {
writeJSONIndent(w, operation, " ")
return
}
data, err := h.executor.HandleOperation(ctx, operation)
result := Result{Data: data}
if err != nil {
w.WriteHeader(400)
result.Error = &Error{Message: err.Error()}
}
if t, ok := tracer.FromContext(ctx); ok {
t.Done()
result.Trace = t
}
writeJSONIndent(w, result, " ")
}
func (p *ParseClass) get(ctx context.Context, r resolver.Resolver, f *graphql.Field) (interface{}, error) {
var results []map[string]interface{}
// TODO(tmc): handle overlap between special fields and user defined fields on a class elegantly
whereClause := make(map[string]interface{})
for _, a := range f.Arguments {
// only populate where clause if the field isn't in out special field list
if !specialFieldsSet[a.Name] {
whereClause[a.Name] = a.Value
}
}
if explicitWhere, ok := f.Arguments.Get("where"); ok {
asMap, ok := explicitWhere.(map[string]interface{})
if !ok {
return nil, fmt.Errorf("explicit where fields must be maps, got '%T'", explicitWhere)
}
whereClause = asMap
}
whereJSON, err := json.Marshal(whereClause)
if err != nil {
return nil, err
}
// limit
limit := DefaultLimit
if l, ok := f.Arguments.Get("limit"); ok {
if lim, ok := l.(int); ok {
limit = lim
} else {
return nil, fmt.Errorf("'limit' argument should be an integer. Got %#v", l)
}
}
// order
order := ""
if o, ok := f.Arguments.Get("order"); ok {
if orderStr, ok := o.(string); ok {
order = orderStr
} else {
return nil, fmt.Errorf("'order' argument should be a string. Got %#v", o)
}
}
spew.Dump("ORDER:", order, f.Arguments)
query := &parse.QueryOptions{
Where: string(whereJSON),
Limit: limit,
Order: order,
}
if t, ok := tracer.FromContext(ctx); ok {
t.IncQueries(1)
}
if err := p.client.QueryClass(p.class.ClassName, query, &results); err != nil {
return nil, err
}
typedResults := make([]*ParseClass, 0, len(results))
for _, r := range results {
pc, err := NewParseClass(p.client, p.class.ClassName, p.schema)
if err != nil {
return nil, err
}
pc.Data = r
typedResults = append(typedResults, pc)
}
return typedResults, err
}
