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- package json
- import (
- "github.com/goccy/go-json/internal/encoder"
- )
- type (
- // FieldQuery you can dynamically filter the fields in the structure by creating a FieldQuery,
- // adding it to context.Context using SetFieldQueryToContext and then passing it to MarshalContext.
- // This is a type-safe operation, so it is faster than filtering using map[string]interface{}.
- FieldQuery = encoder.FieldQuery
- FieldQueryString = encoder.FieldQueryString
- )
- var (
- // FieldQueryFromContext get current FieldQuery from context.Context.
- FieldQueryFromContext = encoder.FieldQueryFromContext
- // SetFieldQueryToContext set current FieldQuery to context.Context.
- SetFieldQueryToContext = encoder.SetFieldQueryToContext
- )
- // BuildFieldQuery builds FieldQuery by fieldName or sub field query.
- // First, specify the field name that you want to keep in structure type.
- // If the field you want to keep is a structure type, by creating a sub field query using BuildSubFieldQuery,
- // you can select the fields you want to keep in the structure.
- // This description can be written recursively.
- func BuildFieldQuery(fields ...FieldQueryString) (*FieldQuery, error) {
- query, err := Marshal(fields)
- if err != nil {
- return nil, err
- }
- return FieldQueryString(query).Build()
- }
- // BuildSubFieldQuery builds sub field query.
- func BuildSubFieldQuery(name string) *SubFieldQuery {
- return &SubFieldQuery{name: name}
- }
- type SubFieldQuery struct {
- name string
- }
- func (q *SubFieldQuery) Fields(fields ...FieldQueryString) FieldQueryString {
- query, _ := Marshal(map[string][]FieldQueryString{q.name: fields})
- return FieldQueryString(query)
- }
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