/
column.go
127 lines (109 loc) · 2.28 KB
/
column.go
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package hbase
import (
"bytes"
"io"
"log"
"github.com/c4pt0r/go-hbase/iohelper"
"github.com/cznic/exp/lldb"
)
type Column struct {
Family []byte
Qual []byte
}
func NewColumn(family, qual []byte) *Column {
return &Column{
Family: family,
Qual: qual,
}
}
func (c *Column) Write(w io.Writer) {
iohelper.WriteVarBytes(w, c.Family)
iohelper.WriteVarBytes(w, c.Qual)
}
func (c *Column) String() string {
b, err := lldb.EncodeScalars(c.Family, c.Qual)
if err != nil {
log.Fatal(err)
}
return string(b)
}
func (c *Column) ParseFromString(s string) {
pairs, err := lldb.DecodeScalars([]byte(s))
if err != nil {
log.Fatal(err)
}
c.Family = pairs[0].([]byte)
c.Qual = pairs[1].([]byte)
}
type ColumnCoordinate struct {
Table []byte
Row []byte
Column
}
func NewColumnCoordinate(table, row, family, qual []byte) *ColumnCoordinate {
return &ColumnCoordinate{
Table: table,
Row: row,
Column: Column{
Family: family,
Qual: qual,
},
}
}
func (c *ColumnCoordinate) Write(w io.Writer) {
iohelper.WriteVarBytes(w, c.Table)
iohelper.WriteVarBytes(w, c.Row)
c.Column.Write(w)
}
func (c *ColumnCoordinate) Equal(a *ColumnCoordinate) bool {
return bytes.Compare(c.Table, a.Table) == 0 &&
bytes.Compare(c.Row, a.Row) == 0 &&
bytes.Compare(c.Family, a.Family) == 0 &&
bytes.Compare(c.Qual, a.Qual) == 0
}
func (c *ColumnCoordinate) String() string {
b, err := lldb.EncodeScalars(c.Table, c.Row, c.Family, c.Qual)
if err != nil {
log.Fatal(err)
}
return string(b)
}
func (c *ColumnCoordinate) ParseFromString(s string) {
pairs, err := lldb.DecodeScalars([]byte(s))
if err != nil {
log.Fatal(err)
}
c.Table = pairs[0].([]byte)
c.Row = pairs[1].([]byte)
c.Family = pairs[2].([]byte)
c.Qual = pairs[3].([]byte)
}
func (c *ColumnCoordinate) ParseField(b iohelper.ByteMultiReader) error {
table, err := iohelper.ReadVarBytes(b)
if err != nil {
return err
}
c.Table = table
row, err := iohelper.ReadVarBytes(b)
if err != nil {
return err
}
c.Row = row
family, err := iohelper.ReadVarBytes(b)
if err != nil {
return err
}
c.Family = family
qual, err := iohelper.ReadVarBytes(b)
if err != nil {
return err
}
c.Qual = qual
return nil
}
func (c *ColumnCoordinate) GetColumn() *Column {
return &Column{
Family: c.Family,
Qual: c.Qual,
}
}