com.liferay.portlet.documentlibrary.util.comparator.RepositoryModelModifiedDateComparator.java Source code

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Here is the source code for com.liferay.portlet.documentlibrary.util.comparator.RepositoryModelModifiedDateComparator.java

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/* ./liferay-liferay-portal-b66e4b4/portal-service/src/com/liferay/portlet/documentlibrary/util/comparator/RepositoryModelModifiedDateComparator.java */
/**
 * 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.portlet.documentlibrary.util.comparator;

import com.liferay.portal.kernel.repository.model.FileEntry;
import com.liferay.portal.kernel.repository.model.Folder;
import com.liferay.portal.kernel.util.DateUtil;
import com.liferay.portal.kernel.util.OrderByComparator;
import com.liferay.portlet.documentlibrary.model.DLFileEntry;
import com.liferay.portlet.documentlibrary.model.DLFileShortcut;
import com.liferay.portlet.documentlibrary.model.DLFolder;

import java.util.Date;

/**
 * @author Brian Wing Shun Chan
 * @author Alexander Chow
 */
public class RepositoryModelModifiedDateComparator<T> extends OrderByComparator<T> {

    public static final String ORDER_BY_ASC = "modifiedDate ASC";

    public static final String ORDER_BY_DESC = "modifiedDate DESC";

    public static final String[] ORDER_BY_FIELDS = { "modifiedDate" };

    public RepositoryModelModifiedDateComparator() {
        this(false);
    }

    public RepositoryModelModifiedDateComparator(boolean ascending) {
        _ascending = ascending;
    }

    @Override
    public int compare(T t1, T t2) {
        Date modifiedDate1 = getModifiedDate(t1);
        Date modifiedDate2 = getModifiedDate(t2);

        int value = DateUtil.compareTo(modifiedDate1, modifiedDate2);

        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;
    }

    protected Date getModifiedDate(Object obj) {
        if (obj instanceof DLFileEntry) {
            DLFileEntry dlFileEntry = (DLFileEntry) obj;

            return dlFileEntry.getModifiedDate();
        } else if (obj instanceof DLFileShortcut) {
            DLFileShortcut dlFileShortcut = (DLFileShortcut) obj;

            return dlFileShortcut.getModifiedDate();
        } else if (obj instanceof DLFolder) {
            DLFolder dlFolder = (DLFolder) obj;

            return dlFolder.getModifiedDate();
        } else if (obj instanceof FileEntry) {
            FileEntry fileEntry = (FileEntry) obj;

            return fileEntry.getModifiedDate();
        } else {
            Folder folder = (Folder) obj;

            return folder.getModifiedDate();
        }
    }

    private final boolean _ascending;

}