com.liferay.portal.kernel.util.PrimitiveLongList Maven / Gradle / Ivy
/**
* Copyright (c) 2000-present Liferay, Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or modify it under
* the terms of the GNU Lesser General Public License as published by the Free
* Software Foundation; either version 2.1 of the License, or (at your option)
* any later version.
*
* This library 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 Lesser General Public License for more
* details.
*/
package com.liferay.portal.kernel.util;
/**
* @author Michael C. Han
*/
public class PrimitiveLongList {
public PrimitiveLongList() {
_elements = new long[10];
}
public PrimitiveLongList(int capacity) {
_elements = new long[capacity];
}
public void add(long value) {
_checkCapacity(_elementsSize + 1);
_elements[_elementsSize++] = value;
}
public void addAll(long[] values) {
_checkCapacity(_elementsSize + values.length);
System.arraycopy(values, 0, _elements, _elementsSize, values.length);
_elementsSize += values.length;
}
public long[] getArray() {
_trim();
return _elements;
}
public int size() {
return _elementsSize;
}
private void _checkCapacity(int minSize) {
int oldSize = _elements.length;
if (minSize > oldSize) {
long[] previousElements = _elements;
int newCapacity = (oldSize * 3) / 2 + 1;
if (newCapacity < minSize) {
newCapacity = minSize;
}
_elements = new long[newCapacity];
System.arraycopy(previousElements, 0, _elements, 0, _elementsSize);
}
}
private void _trim() {
int oldSize = _elements.length;
if (_elementsSize < oldSize) {
long[] previousElements = _elements;
_elements = new long[_elementsSize];
System.arraycopy(previousElements, 0, _elements, 0, _elementsSize);
}
}
private long[] _elements;
private int _elementsSize;
}