Package com.illumon.iris.db.tables.appendable.symbolmanagers

Class BoundedAppendableSymbolManager<STRING_LIKE_TYPE>

java.lang.Object

com.illumon.iris.db.tables.appendable.symbolmanagers.AppendableSymbolManager<STRING_LIKE_TYPE>

com.illumon.iris.db.tables.appendable.symbolmanagers.BoundedAppendableSymbolManager<STRING_LIKE_TYPE>

All Implemented Interfaces:

BufferedAppendable, SymbolManager<STRING_LIKE_TYPE>

public class BoundedAppendableSymbolManager<STRING_LIKE_TYPE>
extends AppendableSymbolManager<STRING_LIKE_TYPE>

A symbol manager that manages a bounded number of cached mappings, with least-recently-added replacement.

Constructor Summary

Constructors

Constructor	Description
BoundedAppendableSymbolManager(BufferedAppendableColumn<STRING_LIKE_TYPE> symbolsColumn, int maximumCachedMappings, Table existingSymbols)

Method Summary

Modifier and Type	Method	Description
void	close()	Flush all appended data to the underlying store, release any resources held, and force all appended data to be persisted to permanent storage.
void	doneAppending()	See BufferedAppendableColumn.doneAppending() for reference.
int	getSymbolId(STRING_LIKE_TYPE symbol)	Get an integer identifier for value.
void	release()	Release any resources held.

Methods inherited from class com.illumon.iris.db.tables.appendable.symbolmanagers.AppendableSymbolManager

ensureFileExists, flush, force, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface com.illumon.iris.db.tables.appendable.BufferedAppendable

maybeForce, prepareCheckpoint

Constructor Details

BoundedAppendableSymbolManager

public BoundedAppendableSymbolManager(@NotNull
 BufferedAppendableColumn<STRING_LIKE_TYPE> symbolsColumn,
 int maximumCachedMappings,
 @Nullable
 Table existingSymbols)

Method Details

getSymbolId

public int getSymbolId(@NotNull
 STRING_LIKE_TYPE symbol)

Description copied from interface: SymbolManager

Get an integer identifier for value. Implementations must guarantee that id to value mappings are one:one or many:one.

Parameters:

symbol - The value to map

Returns:

An integer identifier for value

doneAppending

public void doneAppending()

Description copied from class: AppendableSymbolManager

See BufferedAppendableColumn.doneAppending() for reference.

Overrides:

doneAppending in class AppendableSymbolManager<STRING_LIKE_TYPE>

close

public void close()

Description copied from interface: BufferedAppendable

Flush all appended data to the underlying store, release any resources held, and force all appended data to be persisted to permanent storage. This should be the final access to this appendable (if successful) with the exception of any asynchronous BufferedAppendable.force() operations. A BufferedAppendable.release() is appropriate afterwards, especially on error.

Specified by:

close in interface BufferedAppendable

Overrides:

close in class AppendableSymbolManager<STRING_LIKE_TYPE>

release

public void release()

Description copied from interface: BufferedAppendable

Release any resources held. Called after an error in preparation for termination. For external callers, this should be done as the final access to this column with the exception of any asynchronous BufferedAppendable.force() operations.

Specified by:

release in interface BufferedAppendable

Overrides:

release in class AppendableSymbolManager<STRING_LIKE_TYPE>