Class LegacyPacked64
- java.lang.Object
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- org.apache.lucene.util.packed.PackedInts.Reader
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- org.apache.lucene.backward_codecs.packed.LegacyPacked64
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- All Implemented Interfaces:
Accountable
class LegacyPacked64 extends PackedInts.Reader
Immutable version ofPacked64
which is constructed from am existingDataInput
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Field Summary
Fields Modifier and Type Field Description protected int
bitsPerValue
bits per value.(package private) static int
BLOCK_BITS
(package private) static int
BLOCK_SIZE
private long[]
blocks
Values are stores contiguously in the blocks array.private int
bpvMinusBlockSize
Optimization: Saves one lookup inget(int)
.private long
maskRight
A right-aligned mask of width BitsPerValue used byget(int)
.(package private) static int
MOD_MASK
protected int
valueCount
number of values-
Fields inherited from interface org.apache.lucene.util.Accountable
NULL_ACCOUNTABLE
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Constructor Summary
Constructors Constructor Description LegacyPacked64(int packedIntsVersion, DataInput in, int valueCount, int bitsPerValue)
Creates an array with content retrieved from the given DataInput.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description long
get(int index)
Get the long at the given index.int
get(int index, long[] arr, int off, int len)
Bulk get: read at least one and at mostlen
longs starting fromindex
intoarr[off:off+len]
and return the actual number of values that have been read.long
ramBytesUsed()
Return the memory usage of this object in bytes.int
size()
java.lang.String
toString()
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Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
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Methods inherited from interface org.apache.lucene.util.Accountable
getChildResources
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Field Detail
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BLOCK_SIZE
static final int BLOCK_SIZE
- See Also:
- Constant Field Values
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BLOCK_BITS
static final int BLOCK_BITS
- See Also:
- Constant Field Values
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MOD_MASK
static final int MOD_MASK
- See Also:
- Constant Field Values
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blocks
private final long[] blocks
Values are stores contiguously in the blocks array.
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maskRight
private final long maskRight
A right-aligned mask of width BitsPerValue used byget(int)
.
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bpvMinusBlockSize
private final int bpvMinusBlockSize
Optimization: Saves one lookup inget(int)
.
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valueCount
protected final int valueCount
number of values
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bitsPerValue
protected final int bitsPerValue
bits per value.
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Constructor Detail
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LegacyPacked64
public LegacyPacked64(int packedIntsVersion, DataInput in, int valueCount, int bitsPerValue) throws java.io.IOException
Creates an array with content retrieved from the given DataInput.- Parameters:
in
- a DataInput, positioned at the start of Packed64-content.valueCount
- the number of elements.bitsPerValue
- the number of bits available for any given value.- Throws:
java.io.IOException
- if the values for the backing array could not be retrieved.
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Method Detail
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size
public final int size()
- Specified by:
size
in classPackedInts.Reader
- Returns:
- the number of values.
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get
public long get(int index)
Description copied from class:PackedInts.Reader
Get the long at the given index. Behavior is undefined for out-of-range indices.- Specified by:
get
in classPackedInts.Reader
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get
public int get(int index, long[] arr, int off, int len)
Description copied from class:PackedInts.Reader
Bulk get: read at least one and at mostlen
longs starting fromindex
intoarr[off:off+len]
and return the actual number of values that have been read.- Overrides:
get
in classPackedInts.Reader
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toString
public java.lang.String toString()
- Overrides:
toString
in classjava.lang.Object
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ramBytesUsed
public long ramBytesUsed()
Description copied from interface:Accountable
Return the memory usage of this object in bytes. Negative values are illegal.
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