java.lang.Object
org.apache.lucene.util.fst.OffHeapFSTStore
- All Implemented Interfaces:
Accountable
,FSTReader
Provides off heap storage of finite state machine (FST), using underlying index input instead of
byte store on heap
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Field Summary
FieldsModifier and TypeFieldDescriptionprivate static final long
private final IndexInput
private final long
private final long
Fields inherited from interface org.apache.lucene.util.Accountable
NULL_ACCOUNTABLE
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionGet the reverse BytesReader for this FSTlong
Return the memory usage of this object in bytes.long
size()
void
writeTo
(DataOutput out) Write this FST to another DataOutputMethods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
Methods inherited from interface org.apache.lucene.util.Accountable
getChildResources
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Field Details
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BASE_RAM_BYTES_USED
private static final long BASE_RAM_BYTES_USED -
in
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offset
private final long offset -
numBytes
private final long numBytes
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Constructor Details
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OffHeapFSTStore
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Method Details
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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.- Specified by:
ramBytesUsed
in interfaceAccountable
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size
public long size() -
getReverseBytesReader
Description copied from interface:FSTReader
Get the reverse BytesReader for this FST- Specified by:
getReverseBytesReader
in interfaceFSTReader
- Returns:
- the reverse BytesReader
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writeTo
Description copied from interface:FSTReader
Write this FST to another DataOutput- Specified by:
writeTo
in interfaceFSTReader
- Parameters:
out
- the DataOutput- Throws:
IOException
- if exception occurred during writing
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