Class IVecReader

java.lang.Object

io.nosqlbench.virtdata.library.ivecfvec.IVecReader

All Implemented Interfaces:

LongFunction<int[]>

public class IVecReader
extends Object
implements LongFunction<int[]>

Reads ivec files with random access, using the input to specify the record number. This is used for testing with generated KNN test data which is uniform in dimensions and neighborhood size. While it is possible to specify different dimensioned vectors per record, this is not supported, since this function honors the pure-function behavior of other NB binding functions. This requires uniform record structure for random access.

Constructor Summary

Constructors

Constructor	Description
IVecReader(String pathname)	Read the ivec file, determining the record size from the first record.
IVecReader(String pathname, int expectedDimensions, int recordLimit)

Method Summary

Modifier and Type	Method	Description
int[]	apply(long value)

Methods inherited from class java.lang.Object

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

Constructor Details

IVecReader

public IVecReader(String pathname)

Read the ivec file, determining the record size from the first record.

Parameters:

pathname - The location of the ivec file

IVecReader

public IVecReader(String pathname,
 int expectedDimensions,
 int recordLimit)

Method Details

apply

public int[] apply(long value)

Specified by:

apply in interface LongFunction<int[]>