/**
* 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.knowledge.base.util.comparator;
import com.liferay.knowledge.base.model.KBArticle;
import com.liferay.knowledge.base.model.KBFolder;
import com.liferay.portal.kernel.util.OrderByComparator;
/**
* @author Roberto Díaz
*/
public class KBObjectsTitleComparator<T> extends OrderByComparator<T> {
public static final String ORDER_BY_ASC = "title ASC";
public static final String ORDER_BY_DESC = "title DESC";
public static final String[] ORDER_BY_FIELDS = {"title"};
public static final String ORDER_BY_MODEL_ASC =
"modelFolder DESC, title ASC";
public static final String ORDER_BY_MODEL_DESC =
"modelFolder DESC, title DESC";
public KBObjectsTitleComparator() {
this(false, false);
}
public KBObjectsTitleComparator(boolean ascending) {
this(ascending, false);
}
public KBObjectsTitleComparator(boolean ascending, boolean orderByModel) {
_ascending = ascending;
_orderByModel = orderByModel;
}
@Override
public int compare(T t1, T t2) {
int value = 0;
String title1 = getTitle(t1);
String title2 = getTitle(t2);
if (_orderByModel) {
if ((t1 instanceof KBFolder) && (t2 instanceof KBFolder)) {
title1.compareToIgnoreCase(title2);
}
else if (t1 instanceof KBFolder) {
value = -1;
}
else if (t2 instanceof KBFolder) {
value = 1;
}
else {
title1.compareToIgnoreCase(title2);
}
}
else {
value = title1.compareToIgnoreCase(title2);
}
if (_ascending) {
return value;
}
else {
return -value;
}
}
@Override
public String getOrderBy() {
if (_orderByModel) {
if (_ascending) {
return ORDER_BY_MODEL_ASC;
}
else {
return ORDER_BY_MODEL_DESC;
}
}
else {
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;
}
protected String getTitle(Object obj) {
if (obj instanceof KBArticle) {
KBArticle kbArticle = (KBArticle)obj;
return kbArticle.getTitle();
}
else {
KBFolder kbFolder = (KBFolder)obj;
return kbFolder.getName();
}
}
private final boolean _ascending;
private final boolean _orderByModel;
}