Package org.neo4j.gds.core.compression.packed

Class InlinedHeadPackedTailPacker

java.lang.Object

org.neo4j.gds.core.compression.packed.InlinedHeadPackedTailPacker

public final class InlinedHeadPackedTailPacker
extends java.lang.Object

Compresses values in blocks of AdjacencyPacking.BLOCK_SIZE using bit-packing.

This strategy compressed the first (usually largest) value separately from the rest of the values and leaves a 0-value in at the first index. It uses var-length encoding and writes the encoded value after the header, preceding the data.

If a block to compress has less than AdjacencyPacking.BLOCK_SIZE values, this strategy uses a loop-based packing approach to compress the values in that block.

Method Summary

Modifier and Type	Method	Description
static long	compress(AdjacencyListBuilder.Allocator<Address> allocator, AdjacencyListBuilder.Slice<Address> slice, long[] values, int length, org.neo4j.gds.core.Aggregation aggregation, org.apache.commons.lang3.mutable.MutableInt degree, MemoryTracker memoryTracker)
static long	compressWithProperties(AdjacencyListBuilder.Allocator<Address> allocator, AdjacencyListBuilder.Slice<Address> slice, long[] values, int length, MemoryTracker memoryTracker)

Methods inherited from class java.lang.Object

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

Method Detail

compress

public static long compress(AdjacencyListBuilder.Allocator<Address> allocator,
                            AdjacencyListBuilder.Slice<Address> slice,
                            long[] values,
                            int length,
                            org.neo4j.gds.core.Aggregation aggregation,
                            org.apache.commons.lang3.mutable.MutableInt degree,
                            MemoryTracker memoryTracker)

compressWithProperties

public static long compressWithProperties(AdjacencyListBuilder.Allocator<Address> allocator,
                                          AdjacencyListBuilder.Slice<Address> slice,
                                          long[] values,
                                          int length,
                                          MemoryTracker memoryTracker)