com.liferay.portlet.documentlibrary.service.impl.DLFileVersionLocalServiceImpl.java Source code

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Here is the source code for com.liferay.portlet.documentlibrary.service.impl.DLFileVersionLocalServiceImpl.java

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/**
 * Copyright (c) 2000-2012 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.service.impl;

import com.liferay.portal.kernel.exception.PortalException;
import com.liferay.portal.kernel.exception.SystemException;
import com.liferay.portal.kernel.util.ListUtil;
import com.liferay.portal.kernel.workflow.WorkflowConstants;
import com.liferay.portlet.documentlibrary.NoSuchFileVersionException;
import com.liferay.portlet.documentlibrary.model.DLFileEntryConstants;
import com.liferay.portlet.documentlibrary.model.DLFileVersion;
import com.liferay.portlet.documentlibrary.service.base.DLFileVersionLocalServiceBaseImpl;
import com.liferay.portlet.documentlibrary.util.comparator.FileVersionVersionComparator;

import java.util.Collections;
import java.util.List;

/**
 * @author Brian Wing Shun Chan
 */
public class DLFileVersionLocalServiceImpl extends DLFileVersionLocalServiceBaseImpl {

    public DLFileVersion getFileVersion(long fileVersionId) throws PortalException, SystemException {

        return dlFileVersionPersistence.findByPrimaryKey(fileVersionId);
    }

    public DLFileVersion getFileVersion(long fileEntryId, String version) throws PortalException, SystemException {

        return dlFileVersionPersistence.findByF_V(fileEntryId, version);
    }

    public List<DLFileVersion> getFileVersions(long fileEntryId, int status) throws SystemException {

        if (status == WorkflowConstants.STATUS_ANY) {
            return dlFileVersionPersistence.findByFileEntryId(fileEntryId);
        } else {
            return dlFileVersionPersistence.findByF_S(fileEntryId, status);
        }
    }

    public DLFileVersion getLatestFileVersion(long fileEntryId, boolean excludeWorkingCopy)
            throws PortalException, SystemException {

        List<DLFileVersion> dlFileVersions = dlFileVersionPersistence.findByFileEntryId(fileEntryId);

        if (dlFileVersions.isEmpty()) {
            throw new NoSuchFileVersionException("No file versions found for fileEntryId " + fileEntryId);
        }

        dlFileVersions = ListUtil.copy(dlFileVersions);

        Collections.sort(dlFileVersions, new FileVersionVersionComparator());

        DLFileVersion dlFileVersion = dlFileVersions.get(0);

        String version = dlFileVersion.getVersion();

        if (excludeWorkingCopy && version.equals(DLFileEntryConstants.PRIVATE_WORKING_COPY_VERSION)) {

            return dlFileVersions.get(1);
        }

        return dlFileVersion;
    }

    public DLFileVersion getLatestFileVersion(long userId, long fileEntryId)
            throws PortalException, SystemException {

        boolean excludeWorkingCopy = true;

        if (dlFileEntryLocalService.isFileEntryCheckedOut(fileEntryId)) {
            excludeWorkingCopy = !dlFileEntryLocalService.hasFileEntryLock(userId, fileEntryId);
        }

        return getLatestFileVersion(fileEntryId, excludeWorkingCopy);
    }

}