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java.lang.Object org.apache.lucene.search.suggest.Sort
public final class Sort
On-disk sorting of byte arrays. Each byte array (entry) is a composed of the following fields:
sort(File, File)
Nested Class Summary | |
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static class |
Sort.BufferSize
A bit more descriptive unit for constructors. |
static class |
Sort.ByteSequencesReader
Utility class to read length-prefixed byte[] entries from an input. |
static class |
Sort.ByteSequencesWriter
Utility class to emit length-prefixed byte[] entries to an output stream for sorting. |
class |
Sort.SortInfo
Sort info (debugging mostly). |
Field Summary | |
---|---|
static long |
ABSOLUTE_MIN_SORT_BUFFER_SIZE
Absolute minimum required buffer size for sorting. |
static Comparator<BytesRef> |
DEFAULT_COMPARATOR
Default comparator: sorts in binary (codepoint) order |
static long |
GB
Convenience constant for gigabytes |
static int |
MAX_TEMPFILES
Maximum number of temporary files before doing an intermediate merge. |
static long |
MB
Convenience constant for megabytes |
static long |
MIN_BUFFER_SIZE_MB
Minimum recommended buffer size for sorting. |
Constructor Summary | |
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Sort()
Defaults constructor. |
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Sort(Comparator<BytesRef> comparator)
Defaults constructor with a custom comparator. |
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Sort(Comparator<BytesRef> comparator,
Sort.BufferSize ramBufferSize,
File tempDirectory,
int maxTempfiles)
All-details constructor. |
Method Summary | |
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static File |
defaultTempDir()
Returns the default temporary directory. |
Comparator<BytesRef> |
getComparator()
Returns the comparator in use to sort entries |
Sort.SortInfo |
sort(File input,
File output)
Sort input to output, explicit hint for the buffer size. |
protected File |
sortPartition(int len)
Sort a single partition in-memory. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
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public static final long MB
public static final long GB
public static final long MIN_BUFFER_SIZE_MB
public static final long ABSOLUTE_MIN_SORT_BUFFER_SIZE
public static final int MAX_TEMPFILES
public static final Comparator<BytesRef> DEFAULT_COMPARATOR
Constructor Detail |
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public Sort() throws IOException
IOException
defaultTempDir()
,
Sort.BufferSize.automatic()
public Sort(Comparator<BytesRef> comparator) throws IOException
IOException
defaultTempDir()
,
Sort.BufferSize.automatic()
public Sort(Comparator<BytesRef> comparator, Sort.BufferSize ramBufferSize, File tempDirectory, int maxTempfiles)
Method Detail |
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public Sort.SortInfo sort(File input, File output) throws IOException
IOException
public static File defaultTempDir() throws IOException
IOException
protected File sortPartition(int len) throws IOException
IOException
public Comparator<BytesRef> getComparator()
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