| /* |
| * Copyright 2009-2010 by The Regents of the University of California |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * you may obtain a copy of the License from |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package edu.uci.ics.hyracks.storage.am.rtree.impls; |
| |
| import edu.uci.ics.hyracks.storage.am.common.ophelpers.IntArrayList; |
| import edu.uci.ics.hyracks.storage.am.common.ophelpers.LongArrayList; |
| |
| public class PathList { |
| private IntArrayList pageIds; |
| private LongArrayList pageLsns; |
| private IntArrayList pageIndexes; |
| |
| public PathList(int initialCapacity, int growth) { |
| pageIds = new IntArrayList(initialCapacity, growth); |
| pageLsns = new LongArrayList(initialCapacity, growth); |
| pageIndexes = new IntArrayList(initialCapacity, growth); |
| } |
| |
| public int size() { |
| return pageIds.size(); |
| } |
| |
| public int first() { |
| return pageIds.first(); |
| } |
| |
| public void add(int pageId, long pageLsn, int pageIndex) { |
| pageIds.add(pageId); |
| pageLsns.add(pageLsn); |
| pageIndexes.add(pageIndex); |
| } |
| |
| public void addFirst(int pageId, long pageLsn, int pageIndex) { |
| pageIds.addFirst(pageId); |
| pageLsns.addFirst(pageLsn); |
| pageIndexes.addFirst(pageIndex); |
| } |
| |
| public int getFirstPageId() { |
| return pageIds.getFirst(); |
| } |
| |
| public long getFirstPageLsn() { |
| return pageLsns.getFirst(); |
| } |
| |
| public int getFirstPageIndex() { |
| return pageIndexes.getFirst(); |
| } |
| |
| public int getLastPageId() { |
| return pageIds.getLast(); |
| } |
| |
| public long getLastPageLsn() { |
| return pageLsns.getLast(); |
| } |
| |
| public int getLastPageIndex() { |
| return pageIndexes.getLast(); |
| } |
| |
| public int getPageId(int i) { |
| return pageIds.get(i); |
| } |
| |
| public long getPageLsn(int i) { |
| return pageLsns.get(i); |
| } |
| |
| public int getPageIndex(int i) { |
| return pageIndexes.get(i); |
| } |
| |
| public void setPageLsn(int i, long pageLsn) { |
| pageLsns.set(i, pageLsn); |
| } |
| |
| public void moveFirst() { |
| pageIds.moveFirst(); |
| pageLsns.moveFirst(); |
| pageIndexes.moveFirst(); |
| } |
| |
| public void moveLast() { |
| pageIds.removeLast(); |
| pageLsns.removeLast(); |
| pageIndexes.removeLast(); |
| } |
| |
| public boolean isLast() { |
| return pageIds.isLast(); |
| } |
| |
| public void clear() { |
| pageIds.clear(); |
| pageLsns.clear(); |
| pageIndexes.clear(); |
| } |
| |
| public boolean isEmpty() { |
| return pageIds.isEmpty(); |
| } |
| } |