assertTrue(crawlinginfopage.isExistNextPage());
        crawlinginfopage.setPageSize(0);
        assertEquals(25, crawlinginfopage.getPageSize());
        crawlinginfopage.setPageSize(999);
        assertEquals(999, crawlinginfopage.getPageSize());
        crawlinginfopage.setCurrentPageNumber(0);
        assertEquals(1, crawlinginfopage.getCurrentPageNumber());
        crawlinginfopage.setCurrentPageNumber(999);

        boostdocpager.setExistNextPage(true);
        assertTrue(boostdocpager.isExistNextPage());
        boostdocpager.setPageSize(0);
        assertEquals(25, boostdocpager.getPageSize());
        boostdocpager.setPageSize(999);
        assertEquals(999, boostdocpager.getPageSize());
        boostdocpager.setCurrentPageNumber(0);
        assertEquals(1, boostdocpager.getCurrentPageNumber());
        boostdocpager.setCurrentPageNumber(999);

        assertTrue(charmappingpager.isExistNextPage());
        charmappingpager.setPageSize(0);
        assertEquals(25, charmappingpager.getPageSize());
        charmappingpager.setPageSize(999);
        assertEquals(999, charmappingpager.getPageSize());
        charmappingpager.setCurrentPageNumber(0);
        assertEquals(1, charmappingpager.getCurrentPageNumber());
        charmappingpager.setCurrentPageNumber(999);

        assertEquals(20, itemList1.getPageSize());

        final PagingList<StemmerOverrideItem> itemList2 = stemmerOverrideFile.selectList(2, 2);
        assertEquals(1, itemList2.size());
        assertEquals(3, itemList2.getAllRecordCount());
        assertEquals(2, itemList2.getCurrentPageNumber());
        assertEquals(2, itemList2.getPageSize());

        assertTrue(accesstokenpager.isExistNextPage());
        accesstokenpager.setPageSize(0);
        assertEquals(25, accesstokenpager.getPageSize());
        accesstokenpager.setPageSize(999);
        assertEquals(999, accesstokenpager.getPageSize());
        accesstokenpager.setCurrentPageNumber(0);
        assertEquals(1, accesstokenpager.getCurrentPageNumber());
        accesstokenpager.setCurrentPageNumber(999);

        badwordpager.setExistNextPage(true);
        assertTrue(badwordpager.isExistNextPage());
        badwordpager.setPageSize(0);
        assertEquals(25, badwordpager.getPageSize());
        badwordpager.setPageSize(999);
        assertEquals(999, badwordpager.getPageSize());
        badwordpager.setCurrentPageNumber(0);
        assertEquals(1, badwordpager.getCurrentPageNumber());
        badwordpager.setCurrentPageNumber(999);

        assertTrue(dataconfigpager.isExistNextPage());
        dataconfigpager.setPageSize(0);
        assertEquals(25, dataconfigpager.getPageSize());
        dataconfigpager.setPageSize(999);
        assertEquals(999, dataconfigpager.getPageSize());
        dataconfigpager.setCurrentPageNumber(0);
        assertEquals(1, dataconfigpager.getCurrentPageNumber());
        dataconfigpager.setCurrentPageNumber(999);

        assertTrue(duplicatehostpager.isExistNextPage());
        duplicatehostpager.setPageSize(0);
        assertEquals(25, duplicatehostpager.getPageSize());
        duplicatehostpager.setPageSize(999);
        assertEquals(999, duplicatehostpager.getPageSize());
        duplicatehostpager.setCurrentPageNumber(0);
        assertEquals(1, duplicatehostpager.getCurrentPageNumber());

        return getStemmerOverrideFile(dictId).map(file -> {
            final int pageSize = stemmerOvberridePager.getPageSize();
            final PagingList<StemmerOverrideItem> stemmerOvberrideList =
                    file.selectList((stemmerOvberridePager.getCurrentPageNumber() - 1) * pageSize, pageSize);

            // update pager

    public List<CharMappingItem> getCharMappingList(final String dictId, final CharMappingPager charMappingPager) {
        return getCharMappingFile(dictId).map(file -> {
            final int pageSize = charMappingPager.getPageSize();
            final PagingList<CharMappingItem> charMappingList =
                    file.selectList((charMappingPager.getCurrentPageNumber() - 1) * pageSize, pageSize);

            // update pager