Package org.apache.lucene.util.packed
Class DirectReader
- java.lang.Object
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- org.apache.lucene.util.packed.DirectReader
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public class DirectReader extends java.lang.Object
Retrieves an instance previously written byDirectWriter
Example usage:
int bitsPerValue = 100; IndexInput in = dir.openInput("packed", IOContext.DEFAULT); LongValues values = DirectReader.getInstance(in.randomAccessSlice(start, end), bitsPerValue); for (int i = 0; i < numValues; i++) { long value = values.get(i); }
- See Also:
DirectWriter
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Nested Class Summary
Nested Classes Modifier and Type Class Description (package private) static class
DirectReader.DirectPackedReader1
(package private) static class
DirectReader.DirectPackedReader12
(package private) static class
DirectReader.DirectPackedReader16
(package private) static class
DirectReader.DirectPackedReader2
(package private) static class
DirectReader.DirectPackedReader20
(package private) static class
DirectReader.DirectPackedReader24
(package private) static class
DirectReader.DirectPackedReader28
(package private) static class
DirectReader.DirectPackedReader32
(package private) static class
DirectReader.DirectPackedReader4
(package private) static class
DirectReader.DirectPackedReader40
(package private) static class
DirectReader.DirectPackedReader48
(package private) static class
DirectReader.DirectPackedReader56
(package private) static class
DirectReader.DirectPackedReader64
(package private) static class
DirectReader.DirectPackedReader8
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Field Summary
Fields Modifier and Type Field Description private static int
MERGE_BUFFER_MASK
(package private) static int
MERGE_BUFFER_SHIFT
private static int
MERGE_BUFFER_SIZE
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Constructor Summary
Constructors Constructor Description DirectReader()
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Method Summary
All Methods Static Methods Concrete Methods Modifier and Type Method Description static LongValues
getInstance(RandomAccessInput slice, int bitsPerValue)
Retrieves an instance from the specified slice written decodingbitsPerValue
for each valuestatic LongValues
getInstance(RandomAccessInput slice, int bitsPerValue, long offset)
Retrieves an instance from the specifiedoffset
of the given slice decodingbitsPerValue
for each valuestatic LongValues
getMergeInstance(RandomAccessInput slice, int bitsPerValue, long numValues)
Retrieves an instance that is specialized for merges and is typically faster at sequential access but slower at random access.static LongValues
getMergeInstance(RandomAccessInput slice, int bitsPerValue, long baseOffset, long numValues)
Retrieves an instance that is specialized for merges and is typically faster at sequential access.
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Field Detail
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MERGE_BUFFER_SHIFT
static final int MERGE_BUFFER_SHIFT
- See Also:
- Constant Field Values
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MERGE_BUFFER_SIZE
private static final int MERGE_BUFFER_SIZE
- See Also:
- Constant Field Values
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MERGE_BUFFER_MASK
private static final int MERGE_BUFFER_MASK
- See Also:
- Constant Field Values
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Method Detail
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getInstance
public static LongValues getInstance(RandomAccessInput slice, int bitsPerValue)
Retrieves an instance from the specified slice written decodingbitsPerValue
for each value
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getInstance
public static LongValues getInstance(RandomAccessInput slice, int bitsPerValue, long offset)
Retrieves an instance from the specifiedoffset
of the given slice decodingbitsPerValue
for each value
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getMergeInstance
public static LongValues getMergeInstance(RandomAccessInput slice, int bitsPerValue, long numValues)
Retrieves an instance that is specialized for merges and is typically faster at sequential access but slower at random access.
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getMergeInstance
public static LongValues getMergeInstance(RandomAccessInput slice, int bitsPerValue, long baseOffset, long numValues)
Retrieves an instance that is specialized for merges and is typically faster at sequential access.
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