org.apache.lucene.util
Class RollingBuffer<T extends RollingBuffer.Resettable>
java.lang.Object
org.apache.lucene.util.RollingBuffer<T>
public abstract class RollingBuffer<T extends RollingBuffer.Resettable>
- extends Object
Acts like forever growing T[], but internally uses a
circular buffer to reuse instances of T.
- NOTE: This API is for internal purposes only and might change in incompatible ways in the next release.
Method Summary |
void |
freeBefore(int pos)
|
T |
get(int pos)
Get T instance for this absolute position;
this is allowed to be arbitrarily far "in the
future" but cannot be before the last freeBefore. |
int |
getMaxPos()
Returns the maximum position looked up, or -1 if no
position has been looked up sinc reset/init. |
protected abstract T |
newInstance()
|
void |
reset()
|
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
RollingBuffer
public RollingBuffer()
newInstance
protected abstract T newInstance()
reset
public void reset()
get
public T get(int pos)
- Get T instance for this absolute position;
this is allowed to be arbitrarily far "in the
future" but cannot be before the last freeBefore.
getMaxPos
public int getMaxPos()
- Returns the maximum position looked up, or -1 if no
position has been looked up sinc reset/init.
freeBefore
public void freeBefore(int pos)
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