Java tutorial
/* * eGov SmartCity eGovernance suite aims to improve the internal efficiency,transparency, * accountability and the service delivery of the government organizations. * * Copyright (C) 2017 eGovernments Foundation * * The updated version of eGov suite of products as by eGovernments Foundation * is available at http://www.egovernments.org * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * any later version. * * This program 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 General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see http://www.gnu.org/licenses/ or * http://www.gnu.org/licenses/gpl.html . * * In addition to the terms of the GPL license to be adhered to in using this * program, the following additional terms are to be complied with: * * 1) All versions of this program, verbatim or modified must carry this * Legal Notice. * Further, all user interfaces, including but not limited to citizen facing interfaces, * Urban Local Bodies interfaces, dashboards, mobile applications, of the program and any * derived works should carry eGovernments Foundation logo on the top right corner. * * For the logo, please refer http://egovernments.org/html/logo/egov_logo.png. * For any further queries on attribution, including queries on brand guidelines, * please contact contact@egovernments.org * * 2) Any misrepresentation of the origin of the material is prohibited. It * is required that all modified versions of this material be marked in * reasonable ways as different from the original version. * * 3) This license does not grant any rights to any user of the program * with regards to rights under trademark law for use of the trade names * or trademarks of eGovernments Foundation. * * In case of any queries, you can reach eGovernments Foundation at contact@egovernments.org. * */ package org.egov.ptis.web.controller.masters.taxrates; import java.math.BigDecimal; import java.util.ArrayList; import java.util.List; import java.util.Map; import javax.servlet.http.HttpServletRequest; import org.apache.commons.lang3.StringUtils; import org.egov.demand.bean.DemandReasonDetailsBean; import org.egov.demand.model.EgDemandReasonDetails; import org.egov.infra.admin.master.entity.AppConfigValues; import org.egov.ptis.master.service.TaxRatesService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.ui.Model; import org.springframework.web.bind.annotation.ModelAttribute; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import org.springframework.web.servlet.mvc.support.RedirectAttributes; @Controller @RequestMapping(value = "/taxrates") public class TaxRatesController { private final TaxRatesService taxRatesService; private static final String TAXRATE_VIEW = "taxRates-view"; private static final String TAXRATE_EDIT = "taxrates-edit"; private static final String GENERAL_TAX_RESD = "GEN_TAX_RESD"; private static final String GENERAL_TAX_NONRESD = "GEN_TAX_NR"; private static final String EDUCATIONAL_TAX = "EDU_TAX"; private static final String REDIRECT_URL = "redirect:/taxrates/appconfig/edit"; private static final String REDIRECT_VIEW_URL = "redirect:/taxrates/appconfig/view"; private static final String MESSAGE = "message"; private static final String TOTAL_TAX_RESD = "TOT_RESD_TAX"; private static final String TOTAL_TAX_NONRESD = "TOT_NR_RESD_TAX"; private static final String TAX_RATES_FORM = "taxRatesForm"; @Autowired public TaxRatesController(final TaxRatesService taxRatesService) { this.taxRatesService = taxRatesService; } @ModelAttribute public AppConfigValues taxRatesModel() { return new AppConfigValues(); } @RequestMapping(value = "/appconfig/view", method = RequestMethod.GET) public String showAppConfigTaxRates(final Model model) { final Map<String, Double> taxRatesMap = taxRatesService.getTaxDetails(); model.addAttribute("taxRates", taxRatesMap); return TAXRATE_VIEW; } @RequestMapping(value = "/appconfig/edit", method = RequestMethod.GET) public String viewTaxRates(final Model model) { final Map<String, Double> taxRatesMap = taxRatesService.getTaxDetails(); model.addAttribute("taxRates", taxRatesMap); return TAXRATE_EDIT; } @RequestMapping(value = "/appconfig/edit", method = RequestMethod.POST) public String saveAppConfigTaxRates(@ModelAttribute final DemandReasonDetailsBean taxRatesForm, final Model model, final HttpServletRequest request, final RedirectAttributes redirectAttributes) { final String resTaxValue = request.getParameter("General Tax Residential-value"); final String nonResTaxValue = request.getParameter("General Tax Non Residential-value"); final String eduTax = request.getParameter("Education Tax-value"); if (StringUtils.isNotBlank(resTaxValue) && StringUtils.isNotBlank(nonResTaxValue) && StringUtils.isNotBlank(eduTax) && validateTaxValues(resTaxValue, nonResTaxValue, eduTax)) { final StringBuilder newTaxStr = new StringBuilder(); final AppConfigValues appConfigValue = taxRatesService.getAllTaxRates().get(0); final String[] rows = appConfigValue.getValue().split("\n"); for (final String row : rows) { final String[] value = row.split("="); if (GENERAL_TAX_RESD.equalsIgnoreCase(value[0])) newTaxStr.append("GEN_TAX_RESD=" + resTaxValue + "\n"); else if (GENERAL_TAX_NONRESD.equalsIgnoreCase(value[0])) newTaxStr.append("GEN_TAX_NR=" + nonResTaxValue + "\n"); else if (EDUCATIONAL_TAX.equalsIgnoreCase(value[0])) newTaxStr.append("EDU_TAX=" + eduTax + "\n"); else newTaxStr.append(rows[rows.length - 1] == row ? value[0] + "=" + value[1] : value[0] + "=" + value[1] + "\n"); } if (StringUtils.isNotBlank(newTaxStr)) { appConfigValue.setValue(newTaxStr.toString()); taxRatesService.updateTaxRateAppconfig(appConfigValue); redirectAttributes.addFlashAttribute(MESSAGE, "msg.update.taxrates"); } return REDIRECT_VIEW_URL; } else { redirectAttributes.addFlashAttribute(MESSAGE, "msg.taxrate.invalid"); return REDIRECT_URL; } } @RequestMapping(value = "/view", method = RequestMethod.GET) public String showTaxRates(final Model model) { DemandReasonDetailsBean taxRatesForm = new DemandReasonDetailsBean(); List<EgDemandReasonDetails> taxRates = taxRatesService.getTaxRates(); model.addAttribute("VLT_LIB_DETAILS", taxRatesService.getVltAndLibPercentage(taxRates)); taxRatesForm.setDemandReasonDetails(taxRatesService.excludeOldTaxHeads(taxRates)); model.addAttribute(TAX_RATES_FORM, taxRatesForm); addTotalTaxHeadsToModel(model); return "taxrates-view"; } @RequestMapping(value = "/edit", method = RequestMethod.GET) public String taxRatesEditView(final Model model) { DemandReasonDetailsBean taxRatesForm = new DemandReasonDetailsBean(); List<EgDemandReasonDetails> egDemandReasonDetails = taxRatesService.getTaxRates(); taxRatesForm.setDemandReasonDetails(taxRatesService.excludeOldTaxHeads(egDemandReasonDetails)); model.addAttribute("taxRatesForm", taxRatesForm); addTotalTaxHeadsToModel(model); return "taxrates-editview"; } @RequestMapping(value = "/edit", method = RequestMethod.POST) public String saveTaxRates(@ModelAttribute final DemandReasonDetailsBean taxRatesForm, final Model model, final HttpServletRequest request, final RedirectAttributes redirectAttributes) { EgDemandReasonDetails existingDemandReasonDetails; for (EgDemandReasonDetails egDemandReasonDetail : taxRatesForm.getDemandReasonDetails()) { existingDemandReasonDetails = taxRatesService.getDemandReasonDetailsById(egDemandReasonDetail.getId()); existingDemandReasonDetails.setPercentage(egDemandReasonDetail.getPercentage()); taxRatesService.updateTaxRates(existingDemandReasonDetails); } redirectAttributes.addFlashAttribute(MESSAGE, "msg.update.taxrates"); return "redirect:/taxrates/view"; } private Boolean validateTaxValues(final String newRsdTax, final String newNonRsdTax, final String newEduTax) { boolean isValid = true; final AppConfigValues appConfigValue = taxRatesService.getAllTaxRates().get(0); final String[] rows = appConfigValue.getValue().split("\n"); for (final String row : rows) { final String[] value = row.split("="); if (GENERAL_TAX_RESD.equalsIgnoreCase(value[0]) && new BigDecimal(newRsdTax).compareTo(new BigDecimal(value[1])) < 0 || GENERAL_TAX_NONRESD.equalsIgnoreCase(value[0]) && new BigDecimal(newNonRsdTax).compareTo(new BigDecimal(value[1])) < 0 || EDUCATIONAL_TAX.equalsIgnoreCase(value[0]) && new BigDecimal(newEduTax).compareTo(new BigDecimal(value[1])) < 0) isValid = false; } return isValid; } @SuppressWarnings("unused") private Boolean validate(final DemandReasonDetailsBean taxRatesForm, final Model model, final HttpServletRequest request) { EgDemandReasonDetails existingDemandReasonDetails; BigDecimal netResdPercentage = BigDecimal.ZERO; BigDecimal netNonResdPercentage = BigDecimal.ZERO; List<EgDemandReasonDetails> updatedTaxRatesForm = new ArrayList<>(); for (EgDemandReasonDetails egDemandReasonDetail : taxRatesForm.getDemandReasonDetails()) { existingDemandReasonDetails = taxRatesService.getDemandReasonDetailsById(egDemandReasonDetail.getId()); existingDemandReasonDetails.setPercentage(egDemandReasonDetail.getPercentage()); updatedTaxRatesForm.add(existingDemandReasonDetails); if (existingDemandReasonDetails.getEgDemandReasonMaster().getReasonMaster().endsWith("Non Residential")) netNonResdPercentage = netNonResdPercentage.add(existingDemandReasonDetails.getPercentage()); else netResdPercentage = netResdPercentage.add(existingDemandReasonDetails.getPercentage()); } if (new BigDecimal(request.getParameter("genTaxResd")).compareTo(netResdPercentage) != 0) { taxRatesForm.setDemandReasonDetails(updatedTaxRatesForm); model.addAttribute(MESSAGE, "msg.taxrate.resd.valid"); model.addAttribute(TAX_RATES_FORM, taxRatesForm); addTotalTaxHeadsToModel(model); return false; } else if (new BigDecimal(request.getParameter("genTaxNonResd")).compareTo(netNonResdPercentage) != 0) { taxRatesForm.setDemandReasonDetails(updatedTaxRatesForm); model.addAttribute(MESSAGE, "msg.taxrate.nresd.valid"); model.addAttribute(TAX_RATES_FORM, taxRatesForm); addTotalTaxHeadsToModel(model); return false; } return true; } private void addTotalTaxHeadsToModel(Model model) { BigDecimal totRsdTax = BigDecimal.ZERO; BigDecimal totNRsdTax = BigDecimal.ZERO; BigDecimal eduTax = BigDecimal.ZERO; for (EgDemandReasonDetails drd : taxRatesService.getTaxRates()) { if (drd.getEgDemandReasonMaster().getCode().equals(TOTAL_TAX_RESD)) totRsdTax = drd.getPercentage(); if (drd.getEgDemandReasonMaster().getCode().equals(TOTAL_TAX_NONRESD)) totNRsdTax = drd.getPercentage(); if (drd.getEgDemandReasonMaster().getCode().equals(EDUCATIONAL_TAX)) eduTax = drd.getPercentage(); } totRsdTax = totRsdTax.add(eduTax); totNRsdTax = totNRsdTax.add(eduTax); model.addAttribute("genTaxResd", totRsdTax.setScale(2, BigDecimal.ROUND_CEILING)); model.addAttribute("genTaxNonResd", totNRsdTax.setScale(2, BigDecimal.ROUND_CEILING)); } }