/
query_encoder.go
105 lines (83 loc) · 2.22 KB
/
query_encoder.go
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package protocol
import (
"fmt"
"net/url"
)
// QueryMapEncoder builds a query string.
type QueryMapEncoder struct {
Prefix string
Query url.Values
Err error
}
// List will return a new QueryListEncoder.
func (e *QueryMapEncoder) List(k string) ListEncoder {
if len(e.Prefix) > 0 {
k = e.Prefix + k
}
return &QueryListEncoder{k, e.Query, nil}
}
// Map will return a new QueryMapEncoder.
func (e *QueryMapEncoder) Map(k string) MapEncoder {
if len(e.Prefix) > 0 {
k = e.Prefix + k
}
return &QueryMapEncoder{k, e.Query, nil}
}
// Start does nothing.
func (e *QueryMapEncoder) Start() {}
// End does nothing.
func (e *QueryMapEncoder) End() {}
// MapSetValue adds a single value to the query.
func (e *QueryMapEncoder) MapSetValue(k string, v ValueMarshaler) {
if e.Err != nil {
return
}
str, err := v.MarshalValue()
if err != nil {
e.Err = err
return
}
if len(e.Prefix) > 0 {
k = e.Prefix + k
}
e.Query.Add(k, str)
}
// MapSetFields Is not implemented, query map of map is undefined.
func (e *QueryMapEncoder) MapSetFields(k string, m FieldMarshaler) {
e.Err = fmt.Errorf("query map encoder MapSetFields not supported, %s", e.Prefix)
}
// QueryListEncoder will encode list values nested into a query key.
type QueryListEncoder struct {
Key string
Query url.Values
Err error
}
// List will return a new QueryListEncoder.
func (e *QueryListEncoder) List() ListEncoder {
return &QueryListEncoder{e.Key, e.Query, nil}
}
// Start does nothing for the query protocol.
func (e *QueryListEncoder) Start() {}
// End does nothing for the query protocol.
func (e *QueryListEncoder) End() {}
// Map will return a new QueryMapEncoder.
func (e *QueryListEncoder) Map() MapEncoder {
k := e.Key
return &QueryMapEncoder{k, e.Query, nil}
}
// ListAddValue encodes an individual list value into the querystring.
func (e *QueryListEncoder) ListAddValue(v ValueMarshaler) {
if e.Err != nil {
return
}
str, err := v.MarshalValue()
if err != nil {
e.Err = err
return
}
e.Query.Add(e.Key, str)
}
// ListAddFields Is not implemented, query list of FieldMarshaler is undefined.
func (e *QueryListEncoder) ListAddFields(m FieldMarshaler) {
e.Err = fmt.Errorf("query list encoder ListAddFields not supported, %s", e.Key)
}