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Add ScanType command to Scan with 'type' option

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As of version 6.0 you can use this 'type' option to ask SCAN to only
return objects that match a given type, allowing you to
iterate through the database looking for keys of a specific type.
This commit is contained in:
Leandro Forain
2021-01-08 16:36:20 -03:00
parent b3e0aa270a
commit c2351b491a
3 changed files with 57 additions and 0 deletions
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17
commands.go
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@ -141,6 +141,7 @@ type Cmdable interface {
BitField(ctx context.Context, key string, args ...interface{}) *IntSliceCmd
Scan(ctx context.Context, cursor uint64, match string, count int64) *ScanCmd
ScanType(ctx context.Context, cursor uint64, match string, count int64, keyType string) *ScanCmd
SScan(ctx context.Context, key string, cursor uint64, match string, count int64) *ScanCmd
HScan(ctx context.Context, key string, cursor uint64, match string, count int64) *ScanCmd
ZScan(ctx context.Context, key string, cursor uint64, match string, count int64) *ScanCmd
@ -965,6 +966,22 @@ func (c cmdable) Scan(ctx context.Context, cursor uint64, match string, count in
return cmd
}
func (c cmdable) ScanType(ctx context.Context, cursor uint64, match string, count int64, keyType string) *ScanCmd {
args := []interface{}{"scan", cursor}
if match != "" {
args = append(args, "match", match)
}
if count > 0 {
args = append(args, "count", count)
}
if keyType != "" {
args = append(args, "type", keyType)
}
cmd := NewScanCmd(ctx, c, args...)
_ = c(ctx, cmd)
return cmd
}
func (c cmdable) SScan(ctx context.Context, key string, cursor uint64, match string, count int64) *ScanCmd {
args := []interface{}{"sscan", key, cursor}
if match != "" {