com.liferay.journal.util.comparator.ArticleIDComparator 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.journal.util.comparator;
import com.liferay.journal.model.JournalArticle;
import com.liferay.portal.kernel.util.OrderByComparator;
import com.liferay.portal.kernel.util.StringUtil;
/**
* @author Brian Wing Shun Chan
*/
public class ArticleIDComparator extends OrderByComparator {
public static final String ORDER_BY_ASC =
"JournalArticle.articleId ASC, JournalArticle.version ASC";
public static final String ORDER_BY_DESC =
"JournalArticle.articleId DESC, JournalArticle.version DESC";
public static final String[] ORDER_BY_FIELDS = {"articleId", "version"};
public ArticleIDComparator() {
this(false);
}
public ArticleIDComparator(boolean ascending) {
_ascending = ascending;
}
@Override
public int compare(JournalArticle article1, JournalArticle article2) {
String articleId1 = StringUtil.toLowerCase(article1.getArticleId());
String articleId2 = StringUtil.toLowerCase(article2.getArticleId());
int value = articleId1.compareTo(articleId2);
if (value == 0) {
if (article1.getVersion() < article2.getVersion()) {
value = -1;
}
else if (article1.getVersion() > article2.getVersion()) {
value = 1;
}
}
if (_ascending) {
return value;
}
else {
return -value;
}
}
@Override
public String getOrderBy() {
if (_ascending) {
return ORDER_BY_ASC;
}
else {
return ORDER_BY_DESC;
}
}
@Override
public String[] getOrderByFields() {
return ORDER_BY_FIELDS;
}
@Override
public boolean isAscending() {
return _ascending;
}
private final boolean _ascending;
}