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