// NewWriter create new initialized table writer.
func NewWriter(w desc.Writer, o opt.OptionsGetter) *Writer {
t := &Writer{w: w, o: o, cmp: o.GetComparer()}
// Creating blocks
t.data = block.NewWriter(o.GetBlockRestartInterval())
t.index = block.NewWriter(1)
filter := o.GetFilter()
if filter != nil {
t.filter = block.NewFilterWriter(filter)
t.filter.Generate(0)
}
t.lblock = new(bInfo)
return t
}
// Finish finalize the table. No Add(), Flush() or Finish() is possible
// beyond this, doing so will raise panic.
func (t *Writer) Finish() (err error) {
if t.closed {
panic("operation on closed table writer")
}
err = t.Flush()
if err != nil {
return
}
t.closed = true
// Write filter block
fi := new(bInfo)
if t.filter != nil {
err = t.write(t.filter.Finish(), fi, true)
if err != nil {
return
}
}
// Write meta block
meta := block.NewWriter(t.o.GetBlockRestartInterval())
if t.filter != nil {
filter := t.o.GetFilter()
key := []byte("filter." + filter.Name())
meta.Add(key, fi.encode())
}
mb := new(bInfo)
err = t.write(meta.Finish(), mb, false)
if err != nil {
return
}
// Write index block
if t.pindex {
suc := t.cmp.Successor(t.lkey)
t.index.Add(suc, t.lblock.encode())
t.pindex = false
}
ib := new(bInfo)
err = t.write(t.index.Finish(), ib, false)
if err != nil {
return
}
// Write footer
var n int
n, err = writeFooter(t.w, mb, ib)
if err != nil {
return
}
t.off += n
return
}
func (p *stConstructor_Block) init(t *testing.T, ho *stHarnessOpt) error {
p.t = t
p.bw = block.NewWriter(3)
return nil
}
