54 lines
1.1 KiB
Go
54 lines
1.1 KiB
Go
package scorch
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import (
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"bytes"
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"github.com/RoaringBitmap/roaring"
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"github.com/blevesearch/bleve/index"
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)
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type IndexSnapshotDocIDReader struct {
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snapshot *IndexSnapshot
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iterators []roaring.IntIterable
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segmentOffset int
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}
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func (i *IndexSnapshotDocIDReader) Next() (index.IndexInternalID, error) {
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for i.segmentOffset < len(i.iterators) {
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if !i.iterators[i.segmentOffset].HasNext() {
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i.segmentOffset++
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continue
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}
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next := i.iterators[i.segmentOffset].Next()
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// make segment number into global number by adding offset
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globalOffset := i.snapshot.offsets[i.segmentOffset]
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return docNumberToBytes(uint64(next) + globalOffset), nil
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}
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return nil, nil
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}
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func (i *IndexSnapshotDocIDReader) Advance(ID index.IndexInternalID) (index.IndexInternalID, error) {
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// FIXME do something better
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next, err := i.Next()
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if err != nil {
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return nil, err
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}
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if next == nil {
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return nil, nil
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}
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for bytes.Compare(next, ID) < 0 {
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next, err = i.Next()
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if err != nil {
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return nil, err
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}
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if next == nil {
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break
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}
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}
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return next, nil
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}
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func (i *IndexSnapshotDocIDReader) Close() error {
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return nil
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}
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