com.pervasive.datarush.tokens.record

Class RecordToIDMap.WriteAccessor

java.lang.Object

com.pervasive.datarush.tokens.record.RecordToIDMap.WriteAccessor

Enclosing class:

RecordToIDMap

public abstract static class RecordToIDMap.WriteAccessor
extends Object

An accessor for building the map.

NOTE: From a thread safety standpoint, it is unsafe to have multiple WriteAccessors in different threads that reference a single RecordToIDMap.

Method Summary

Modifier and Type	Method and Description
abstract void	commit() Commits the current value to the location returned by getOrCreateID in the event of a cache flush.
abstract int	getOrCreateID() Returns the ID corresponding to the current record, allocating a new ID if not found.

Methods inherited from class java.lang.Object

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

Method Detail

getOrCreateID

public abstract int getOrCreateID()

Returns the ID corresponding to the current record, allocating a new ID if not found. If this is an LRU WriteAccessor, this will return a value equal to -(id+1) in the event that there is no more room in the cache, where id is the id of the LRU item.

Returns:

the ID corresponding to the current record or a new id if not found.

commit

public abstract void commit()

Commits the current value to the location returned by getOrCreateID in the event of a cache flush. Has no effect if this is not an LRU cache.