/* Copyright (C) SYSTAP, LLC DBA Blazegraph 2006-2016. All rights reserved. Contact: SYSTAP, LLC DBA Blazegraph 2501 Calvert ST NW #106 Washington, DC 20008 licenses@blazegraph.com This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; version 2 of the License. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ /* * Created on Jun 20, 2008 */ package com.bigdata.relation.accesspath; /** * An unsynchronized buffer backed by a fixed capacity array that migrates * references onto the caller's buffer (which is normally thread-safe) using * {@link IBuffer#add(int)}. * <p> * <strong>This implementation is NOT thread-safe.</strong> * * @author <a href="mailto:thompsonbry@users.sourceforge.net">Bryan Thompson</a> * @version $Id$ */ public class UnsynchronizedArrayBuffer<E> extends AbstractUnsynchronizedArrayBuffer<E> { /** * The buffer onto which chunks are evicted by {@link #overflow()}. */ private final IBuffer<E[]> target; /** * @param target * The target buffer onto which the elements will be flushed. * @param cls * The component type of the backing array. * @param capacity * The capacity of the backing buffer. */ public UnsynchronizedArrayBuffer(final IBuffer<E[]> target, final Class<? extends E> cls, final int capacity) { this(target, capacity, cls, null/* filter */); } /** * @param target * The target buffer onto which chunks of elements will be * flushed. * @param cls * The component type of the backing array. * @param capacity * The capacity of the backing buffer. * @param filter * Filter to keep elements out of the buffer (optional). */ public UnsynchronizedArrayBuffer(final IBuffer<E[]> target, final int capacity, final Class<? extends E> cls, final IElementFilter<E> filter) { super(capacity, cls, filter); if (target == null) throw new IllegalArgumentException(); this.target = target; } /** Add the chunk to the target buffer. */ final protected void handleChunk(final E[] chunk) { target.add(chunk); } }