Example usage for com.liferay.portal.kernel.dao.search SearchPaginationUtil calculateStartAndEnd

Introduction

In this page you can find the example usage for com.liferay.portal.kernel.dao.search SearchPaginationUtil calculateStartAndEnd.

Prototype

public static int[] calculateStartAndEnd(int start, int end, int total) 

Source Link

Usage

From source file:com.liferay.trash.service.impl.TrashEntryServiceImpl.java

License:Open Source License

/**
 * Returns a range of all the trash entries matching the group ID.
 *
 * @param  groupId the primary key of the group
 * @param  className the class name of the entity
 * @param  start the lower bound of the range of trash entries to return
 * @param  end the upper bound of the range of trash entries to return (not
 *         inclusive)//from ww w .  j a v a2s  .c o  m
 * @param  obc the comparator to order the trash entries (optionally
 *         <code>null</code>)
 * @return the range of matching trash entries ordered by comparator
 *         <code>obc</code>
 */
@Override
public TrashEntryList getEntries(long groupId, String className, int start, int end,
        OrderByComparator<TrashEntry> obc) throws PrincipalException {

    TrashEntryList trashEntriesList = new TrashEntryList();

    int entriesCount = trashEntryPersistence.countByGroupId(groupId);

    boolean approximate = false;

    if (entriesCount > PropsValues.TRASH_SEARCH_LIMIT) {
        approximate = true;
    }

    trashEntriesList.setApproximate(approximate);

    List<TrashEntry> entries = null;

    if (Validator.isNotNull(className)) {
        long classNameId = classNameLocalService.getClassNameId(className);

        entries = trashEntryPersistence.findByG_C(groupId, classNameId, 0, end + PropsValues.TRASH_SEARCH_LIMIT,
                obc);
    } else {
        entries = trashEntryPersistence.findByGroupId(groupId, 0, end + PropsValues.TRASH_SEARCH_LIMIT, obc);
    }

    List<TrashEntry> filteredEntries = filterEntries(entries);

    int total = filteredEntries.size();

    if ((start == QueryUtil.ALL_POS) && (end == QueryUtil.ALL_POS)) {
        start = 0;
        end = total;
    }

    int[] startAndEnd = SearchPaginationUtil.calculateStartAndEnd(start, end, total);

    start = startAndEnd[0];
    end = startAndEnd[1];

    filteredEntries = filteredEntries.subList(start, end);

    trashEntriesList.setArray(TrashEntrySoap.toSoapModels(filteredEntries));

    trashEntriesList.setCount(total);
    trashEntriesList.setOriginalTrashEntries(filteredEntries);

    return trashEntriesList;
}

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