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40 lines
825 B
Go
40 lines
825 B
Go
package zset
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import (
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"github.com/nalgeon/redka/internal/parser"
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"github.com/nalgeon/redka/internal/redis"
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)
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// Returns the count of members in a sorted set that have scores within a range.
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// ZCOUNT key min max
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// https://redis.io/commands/zcount
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type ZCount struct {
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redis.BaseCmd
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key string
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min float64
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max float64
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}
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func ParseZCount(b redis.BaseCmd) (*ZCount, error) {
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cmd := &ZCount{BaseCmd: b}
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err := parser.New(
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parser.String(&cmd.key),
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parser.Float(&cmd.min),
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parser.Float(&cmd.max),
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).Required(3).Run(cmd.Args())
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if err != nil {
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return nil, err
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}
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return cmd, nil
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}
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func (cmd *ZCount) Run(w redis.Writer, red redis.Redka) (any, error) {
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n, err := red.ZSet().Count(cmd.key, cmd.min, cmd.max)
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if err != nil {
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w.WriteError(cmd.Error(err))
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return nil, err
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}
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w.WriteInt(n)
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return n, nil
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}
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