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sqlfmt.go
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sqlfmt.go
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package schema
type QueryAppender interface {
AppendQuery(fmter Formatter, b []byte) ([]byte, error)
}
type ColumnsAppender interface {
AppendColumns(fmter Formatter, b []byte) ([]byte, error)
}
//------------------------------------------------------------------------------
// Safe represents a safe SQL query.
type Safe string
var _ QueryAppender = (*Safe)(nil)
func (s Safe) AppendQuery(fmter Formatter, b []byte) ([]byte, error) {
return append(b, s...), nil
}
//------------------------------------------------------------------------------
// Ident represents a SQL identifier, for example, table or column name.
type Ident string
var _ QueryAppender = (*Ident)(nil)
func (s Ident) AppendQuery(fmter Formatter, b []byte) ([]byte, error) {
return fmter.AppendIdent(b, string(s)), nil
}
//------------------------------------------------------------------------------
type QueryWithArgs struct {
Query string
Args []interface{}
}
var _ QueryAppender = QueryWithArgs{}
func SafeQuery(query string, args []interface{}) QueryWithArgs {
if query != "" && args == nil {
args = make([]interface{}, 0)
}
return QueryWithArgs{Query: query, Args: args}
}
func UnsafeIdent(ident string) QueryWithArgs {
return QueryWithArgs{Query: ident}
}
func (q QueryWithArgs) IsZero() bool {
return q.Query == "" && q.Args == nil
}
func (q QueryWithArgs) AppendQuery(fmter Formatter, b []byte) ([]byte, error) {
if q.Args == nil {
return fmter.AppendIdent(b, q.Query), nil
}
return fmter.AppendQuery(b, q.Query, q.Args...), nil
}
//------------------------------------------------------------------------------
type QueryWithSep struct {
QueryWithArgs
Sep string
}
func SafeQueryWithSep(query string, args []interface{}, sep string) QueryWithSep {
return QueryWithSep{
QueryWithArgs: SafeQuery(query, args),
Sep: sep,
}
}