public abstract class LiveFieldValues<T> extends Object implements ReferenceManager.RefreshListener, Closeable
NOTE: you must ensure the same id is never updated at the same time by two threads, because in this case you cannot in general know which thread "won".
Constructor and Description |
---|
LiveFieldValues(ReferenceManager<IndexSearcher> mgr,
T missingValue) |
Modifier and Type | Method and Description |
---|---|
void |
add(String id,
T value)
Call this after you've successfully added a document
to the index, to record what value you just set the
field to.
|
void |
afterRefresh(boolean didRefresh)
Called after the attempted refresh; if the refresh
did open a new reference then didRefresh will be true
and
ReferenceManager.acquire() is guaranteed to return the new
reference. |
void |
beforeRefresh()
Called right before a refresh attempt starts.
|
void |
close() |
void |
delete(String id)
Call this after you've successfully deleted a document
from the index.
|
T |
get(String id)
Returns the current value for this id, or null if the
id isn't in the index or was deleted.
|
protected abstract T |
lookupFromSearcher(IndexSearcher s,
String id)
This is called when the id/value was already flushed & opened
in an NRT IndexSearcher.
|
int |
size()
Returns the [approximate] number of id/value pairs
buffered in RAM.
|
public LiveFieldValues(ReferenceManager<IndexSearcher> mgr, T missingValue)
public void beforeRefresh() throws IOException
ReferenceManager.RefreshListener
beforeRefresh
in interface ReferenceManager.RefreshListener
IOException
public void afterRefresh(boolean didRefresh) throws IOException
ReferenceManager.RefreshListener
ReferenceManager.acquire()
is guaranteed to return the new
reference.afterRefresh
in interface ReferenceManager.RefreshListener
IOException
public void add(String id, T value)
public void delete(String id)
public int size()
public T get(String id) throws IOException
IOException
protected abstract T lookupFromSearcher(IndexSearcher s, String id) throws IOException
IOException
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