// first init for table,
// create data and pk directories and default files.
func (t *Table) firstInit() (e error) {
// create directory
e = os.MkdirAll(t.directory, os.ModePerm)
if e != nil {
return
}
// init data chunk
dir := path.Join(t.directory, "_data")
if t.Chunk, e = col.NewChunk(dir, "data", ".dat", 1000, t.Object.DataType); e != nil {
return
}
// init pk
dir = path.Join(t.directory, "_pk")
if t.Pk, e = col.NewPk(dir, t.Object.PkAuto); e != nil {
return
}
return
}
// init table.
// if first run, create chunk and pk.
// otherwise, read chunk data and pk data.
func (t *Table) init() (e error) {
if !com.IsDir(t.directory) {
e = t.firstInit()
return
}
// read pk file
dir := path.Join(t.directory, "_pk")
if t.Pk, e = col.NewPk(dir, t.Object.PkAuto); e != nil {
return
}
// read chunk file
dir = path.Join(t.directory, "_data")
if t.Chunk, e = col.NewChunk(dir, "data", ".dat", 1000, t.Object.DataType); e != nil {
return
}
// read last chunk as default
e = t.Chunk.ReadCursorFile(t.Pk.GetLastCursor(), true)
return
}