public final class DirectWriter extends Object
DirectReader
.
Unlike PackedInts, it optimizes for read i/o operations and supports > 2B values. Example usage:
int bitsPerValue = DirectWriter.bitsRequired(100); // values up to and including 100 IndexOutput output = dir.createOutput("packed", IOContext.DEFAULT); DirectWriter writer = DirectWriter.getInstance(output, numberOfValues, bitsPerValue); for (int i = 0; i < numberOfValues; i++) { writer.add(value); } writer.finish(); output.close();
DirectReader
Modifier and Type | Method and Description |
---|---|
void |
add(long l)
Adds a value to this writer
|
static int |
bitsRequired(long maxValue)
Returns how many bits are required to hold values up
to and including maxValue
|
void |
finish()
finishes writing
|
static DirectWriter |
getInstance(IndexOutput output,
long numValues,
int bitsPerValue)
Returns an instance suitable for encoding
numValues using bitsPerValue |
static int |
unsignedBitsRequired(long maxValue)
Returns how many bits are required to hold values up
to and including maxValue, interpreted as an unsigned value.
|
public void add(long l) throws IOException
IOException
public void finish() throws IOException
IOException
public static DirectWriter getInstance(IndexOutput output, long numValues, int bitsPerValue)
numValues
using bitsPerValue
public static int bitsRequired(long maxValue)
maxValue
- the maximum value that should be representable.PackedInts.bitsRequired(long)
public static int unsignedBitsRequired(long maxValue)
maxValue
- the maximum value that should be representable.PackedInts.unsignedBitsRequired(long)
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