org.apache.lucene.index
Class SortedBytesMergeUtils

java.lang.Object
  org.apache.lucene.index.SortedBytesMergeUtils

public final class SortedBytesMergeUtils
extends Object

Utility class for merging SortedBytes DocValues instances.

NOTE: This API is for internal purposes only and might change in incompatible ways in the next release.

Nested Class Summary

static interface	SortedBytesMergeUtils.BytesRefConsumer Implementation of this interface consume the merged bytes with their corresponding ordinal and byte offset.
static class	SortedBytesMergeUtils.IndexOutputBytesRefConsumer A simple SortedBytesMergeUtils.BytesRefConsumer that writes the merged BytesRef instances sequentially to an IndexOutput.
static class	SortedBytesMergeUtils.MergeContext Encapsulates contextual information about the merge.
static class	SortedBytesMergeUtils.SortedSourceSlice SortedBytesMergeUtils.SortedSourceSlice represents a single DocValues.SortedSource merge candidate.

Method Summary

static List<SortedBytesMergeUtils.SortedSourceSlice>	buildSlices(int[] docBases, MergeState.DocMap[] docMaps, DocValues[] docValues, SortedBytesMergeUtils.MergeContext ctx) Creates the SortedBytesMergeUtils.SortedSourceSlices for merging.
static SortedBytesMergeUtils.MergeContext	init(DocValues.Type type, DocValues[] docValues, Comparator<BytesRef> comp, int mergeDocCount) Creates the SortedBytesMergeUtils.MergeContext necessary for merging the ordinals.
static int	mergeRecords(SortedBytesMergeUtils.MergeContext ctx, SortedBytesMergeUtils.BytesRefConsumer consumer, List<SortedBytesMergeUtils.SortedSourceSlice> slices) Does the "real work" of merging the slices and computing the ord mapping.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

init

public static SortedBytesMergeUtils.MergeContext init(DocValues.Type type,
                                                      DocValues[] docValues,
                                                      Comparator<BytesRef> comp,
                                                      int mergeDocCount)

Creates the SortedBytesMergeUtils.MergeContext necessary for merging the ordinals.

buildSlices

public static List<SortedBytesMergeUtils.SortedSourceSlice> buildSlices(int[] docBases,
                                                                        MergeState.DocMap[] docMaps,
                                                                        DocValues[] docValues,
                                                                        SortedBytesMergeUtils.MergeContext ctx)
                                                                 throws IOException

Creates the SortedBytesMergeUtils.SortedSourceSlices for merging.

Throws:

IOException

mergeRecords

public static int mergeRecords(SortedBytesMergeUtils.MergeContext ctx,
                               SortedBytesMergeUtils.BytesRefConsumer consumer,
                               List<SortedBytesMergeUtils.SortedSourceSlice> slices)
                        throws IOException

Does the "real work" of merging the slices and computing the ord mapping.

Throws:

IOException