forked from ironsweet/golucene
/
output.go
105 lines (88 loc) · 2.17 KB
/
output.go
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package store
import (
"github.com/gzg1984/golucene/core/util"
"io"
)
/*
Wrap IndexOutput to allow coding in flow style without worrying about
error check. If error happens in the middle, following calls are just
ignored.
*/
type IndexOutputStream struct {
err error
out IndexOutput
}
func Stream(out IndexOutput) *IndexOutputStream {
return &IndexOutputStream{out: out}
}
func (ios *IndexOutputStream) WriteString(s string) *IndexOutputStream {
if ios.err == nil {
ios.err = ios.out.WriteString(s)
}
return ios
}
func (ios *IndexOutputStream) WriteInt(i int32) *IndexOutputStream {
if ios.err == nil {
ios.err = ios.out.WriteInt(i)
}
return ios
}
func (ios *IndexOutputStream) WriteVInt(i int32) *IndexOutputStream {
if ios.err == nil {
ios.err = ios.out.WriteVInt(i)
}
return ios
}
func (ios *IndexOutputStream) WriteLong(l int64) *IndexOutputStream {
if ios.err == nil {
ios.err = ios.out.WriteLong(l)
}
return ios
}
func (ios *IndexOutputStream) WriteByte(b byte) *IndexOutputStream {
if ios.err == nil {
ios.err = ios.out.WriteByte(b)
}
return ios
}
func (ios *IndexOutputStream) WriteBytes(b []byte) *IndexOutputStream {
if ios.err == nil {
ios.err = ios.out.WriteBytes(b)
}
return ios
}
func (ios *IndexOutputStream) WriteStringStringMap(m map[string]string) *IndexOutputStream {
if ios.err == nil {
ios.err = ios.out.WriteStringStringMap(m)
}
return ios
}
func (ios *IndexOutputStream) WriteStringSet(m map[string]bool) *IndexOutputStream {
if ios.err == nil {
ios.err = ios.out.WriteStringSet(m)
}
return ios
}
func (ios *IndexOutputStream) Close() error {
return ios.err
}
// store/IndexOutput.java
type IndexOutput interface {
io.Closer
util.DataOutput
// Forces any buffered output to be written.
// Flush() error
// Returns the current position in this file, where the next write will occur.
FilePointer() int64
// Returns the current checksum of bytes written so far
Checksum() int64
}
type IndexOutputImpl struct {
*util.DataOutputImpl
}
func NewIndexOutput(part util.DataWriter) *IndexOutputImpl {
return &IndexOutputImpl{util.NewDataOutput(part)}
}
// func (out *IndexOutputImpl) SetLength(length int64) error {
// return nil
// }