37 lines
686 B
Go
37 lines
686 B
Go
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package qb
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import (
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"bytes"
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"fmt"
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"strings"
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"time"
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)
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type expr interface {
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// WriteCql writes a CQL representation of the expr to a buffer and returns
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// slice of parameter names.
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WriteCql(cql *bytes.Buffer) (names []string)
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}
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type using struct {
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timestamp time.Time
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ttl time.Duration
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}
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func (u using) WriteCql(cql *bytes.Buffer) (names []string) {
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var v []string
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if !u.timestamp.IsZero() {
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v = append(v, fmt.Sprint("TIMESTAMP ", u.timestamp.UnixNano()/1000))
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}
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if u.ttl != 0 {
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v = append(v, fmt.Sprint("TTL ", int(u.ttl.Seconds())))
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}
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if len(v) > 0 {
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cql.WriteString("USING ")
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cql.WriteString(strings.Join(v, ","))
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cql.WriteString(" ")
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}
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return
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}
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