91 lines
1.5 KiB
Go
91 lines
1.5 KiB
Go
// +build forestdb
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package goforestdb
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import (
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"github.com/couchbaselabs/goforestdb"
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)
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type ForestDBIterator struct {
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store *ForestDBStore
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valid bool
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curr *forestdb.Doc
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iter *forestdb.Iterator
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}
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func newForestDBIterator(store *ForestDBStore) *ForestDBIterator {
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rv := ForestDBIterator{
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store: store,
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}
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return &rv
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}
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func (f *ForestDBIterator) SeekFirst() {
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if f.iter != nil {
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f.iter.Close()
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f.iter = nil
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}
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var err error
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f.iter, err = f.store.db.IteratorInit([]byte{}, nil, forestdb.ITR_NONE)
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if err != nil {
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f.valid = false
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return
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}
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f.valid = true
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f.Next()
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}
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func (f *ForestDBIterator) Seek(key []byte) {
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if f.iter != nil {
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f.iter.Close()
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f.iter = nil
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}
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var err error
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f.iter, err = f.store.db.IteratorInit(key, nil, forestdb.ITR_NONE)
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if err != nil {
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f.valid = false
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return
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}
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f.valid = true
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f.Next()
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}
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func (f *ForestDBIterator) Next() {
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var err error
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f.curr, err = f.iter.Next()
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if err != nil {
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f.valid = false
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}
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}
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func (f *ForestDBIterator) Current() ([]byte, []byte, bool) {
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if f.valid {
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return f.Key(), f.Value(), true
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}
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return nil, nil, false
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}
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func (f *ForestDBIterator) Key() []byte {
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if f.valid && f.curr != nil {
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return f.curr.Key()
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}
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return nil
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}
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func (f *ForestDBIterator) Value() []byte {
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if f.valid && f.curr != nil {
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return f.curr.Body()
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}
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return nil
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}
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func (f *ForestDBIterator) Valid() bool {
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return f.valid
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}
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func (f *ForestDBIterator) Close() {
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f.valid = false
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f.iter.Close()
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f.iter = nil
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}
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