Jeremy Tregunna
c2c97f67a8
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Go Tests / Run Tests (1.24.2) (push) Failing after 15m7s
68 lines
1.6 KiB
Go
68 lines
1.6 KiB
Go
package sstable
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// No imports needed
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// IteratorAdapter adapts an sstable.Iterator to the common Iterator interface
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type IteratorAdapter struct {
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iter *Iterator
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}
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// NewIteratorAdapter creates a new adapter for an sstable iterator
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func NewIteratorAdapter(iter *Iterator) *IteratorAdapter {
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return &IteratorAdapter{iter: iter}
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}
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// SeekToFirst positions the iterator at the first key
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func (a *IteratorAdapter) SeekToFirst() {
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a.iter.SeekToFirst()
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}
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// SeekToLast positions the iterator at the last key
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func (a *IteratorAdapter) SeekToLast() {
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a.iter.SeekToLast()
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}
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// Seek positions the iterator at the first key >= target
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func (a *IteratorAdapter) Seek(target []byte) bool {
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return a.iter.Seek(target)
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}
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// Next advances the iterator to the next key
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func (a *IteratorAdapter) Next() bool {
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return a.iter.Next()
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}
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// Key returns the current key
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func (a *IteratorAdapter) Key() []byte {
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if !a.Valid() {
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return nil
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}
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return a.iter.Key()
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}
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// Value returns the current value
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func (a *IteratorAdapter) Value() []byte {
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if !a.Valid() {
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return nil
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}
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return a.iter.Value()
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}
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// Valid returns true if the iterator is positioned at a valid entry
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func (a *IteratorAdapter) Valid() bool {
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return a.iter != nil && a.iter.Valid()
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}
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// IsTombstone returns true if the current entry is a deletion marker
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func (a *IteratorAdapter) IsTombstone() bool {
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return a.Valid() && a.iter.IsTombstone()
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}
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// SequenceNumber returns the sequence number of the current entry
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func (a *IteratorAdapter) SequenceNumber() uint64 {
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if !a.Valid() {
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return 0
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}
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return a.iter.SequenceNumber()
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}
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