gitroast/vendor/github.com/pingcap/go-hbase/get.go

106 lines
2.1 KiB
Go

package hbase
import (
"strings"
pb "github.com/golang/protobuf/proto"
"github.com/juju/errors"
"github.com/pingcap/go-hbase/proto"
)
type Get struct {
Row []byte
Families set
FamilyQuals map[string]set
Versions int32
TsRangeFrom uint64
TsRangeTo uint64
}
func NewGet(row []byte) *Get {
return &Get{
Row: append([]byte(nil), row...),
Families: newSet(),
FamilyQuals: make(map[string]set),
Versions: 1,
}
}
func (g *Get) GetRow() []byte {
return g.Row
}
func (g *Get) AddString(famqual string) error {
parts := strings.Split(famqual, ":")
if len(parts) > 2 {
return errors.Errorf("Too many colons were found in the family:qualifier string. '%s'", famqual)
} else if len(parts) == 2 {
g.AddStringColumn(parts[0], parts[1])
} else {
g.AddStringFamily(famqual)
}
return nil
}
func (g *Get) AddColumn(family, qual []byte) *Get {
g.AddFamily(family)
g.FamilyQuals[string(family)].add(string(qual))
return g
}
func (g *Get) AddStringColumn(family, qual string) *Get {
return g.AddColumn([]byte(family), []byte(qual))
}
func (g *Get) AddFamily(family []byte) *Get {
g.Families.add(string(family))
if _, ok := g.FamilyQuals[string(family)]; !ok {
g.FamilyQuals[string(family)] = newSet()
}
return g
}
func (g *Get) AddStringFamily(family string) *Get {
return g.AddFamily([]byte(family))
}
func (g *Get) AddTimeRange(from uint64, to uint64) *Get {
g.TsRangeFrom = from
g.TsRangeTo = to
return g
}
func (g *Get) SetMaxVersion(maxVersion int32) *Get {
g.Versions = maxVersion
return g
}
func (g *Get) ToProto() pb.Message {
get := &proto.Get{
Row: g.Row,
}
if g.TsRangeFrom != 0 && g.TsRangeTo != 0 && g.TsRangeFrom <= g.TsRangeTo {
get.TimeRange = &proto.TimeRange{
From: pb.Uint64(g.TsRangeFrom),
To: pb.Uint64(g.TsRangeTo),
}
}
for v := range g.Families {
col := &proto.Column{
Family: []byte(v),
}
var quals [][]byte
for qual := range g.FamilyQuals[v] {
quals = append(quals, []byte(qual))
}
col.Qualifier = quals
get.Column = append(get.Column, col)
}
get.MaxVersions = pb.Uint32(uint32(g.Versions))
return get
}