Java tutorial
/* * eGov SmartCity eGovernance suite aims to improve the internal efficiency,transparency, * accountability and the service delivery of the government organizations. * * Copyright (C) 2018 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.tl.service; import org.egov.commons.CFinancialYear; import org.egov.commons.Installment; import org.egov.commons.dao.InstallmentDao; import org.egov.commons.service.CFinancialYearService; import org.egov.infra.admin.master.entity.Module; import org.egov.infra.admin.master.service.ModuleService; import org.egov.infra.config.core.EnvironmentSettings; import org.egov.infra.exception.ApplicationValidationException; import org.egov.infra.validation.exception.ValidationException; import org.egov.tl.entity.DemandGenerationLog; import org.egov.tl.entity.DemandGenerationLogDetail; import org.egov.tl.entity.TradeLicense; import org.egov.tl.entity.contracts.DemandGenerationRequest; import org.joda.time.DateTime; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.beans.factory.annotation.Qualifier; import org.springframework.stereotype.Service; import org.springframework.transaction.annotation.Propagation; import org.springframework.transaction.annotation.Transactional; import javax.persistence.EntityManager; import javax.persistence.PersistenceContext; import java.util.ArrayList; import java.util.Collection; import java.util.List; import static org.egov.infra.persistence.utils.PersistenceUtils.flushBatchUpdate; import static org.egov.tl.entity.enums.ProcessStatus.COMPLETED; import static org.egov.tl.entity.enums.ProcessStatus.INCOMPLETE; import static org.egov.tl.utils.Constants.TRADE_LICENSE; @Service @Transactional(readOnly = true) public class DemandGenerationService { private static final Logger LOGGER = LoggerFactory.getLogger(DemandGenerationService.class); private static final String SUCCESSFUL = "Successful"; private static final String ERROR_MSG = "Error occurred while generating demand for license {}"; @Autowired private DemandGenerationLogService demandGenerationLogService; @PersistenceContext private EntityManager entityManager; @Autowired private CFinancialYearService financialYearService; @Autowired private InstallmentDao installmentDao; @Autowired private ModuleService moduleService; @Autowired @Qualifier("tradeLicenseService") private TradeLicenseService licenseService; @Autowired private LicenseRenewalNotificationService renewalNotificationService; private int batchSize; @Autowired public DemandGenerationService(EnvironmentSettings environmentSettings) { this.batchSize = environmentSettings.getBatchUpdateSize(); } @Transactional public DemandGenerationLog getDemandGenerationLog(CFinancialYear financialYear) { DemandGenerationLog demandGenerationLog = demandGenerationLogService .getDemandGenerationLogByInstallmentYear(financialYear.getFinYearRange()); if (demandGenerationLog == null) demandGenerationLog = createDemandGenerationLog(financialYear); return demandGenerationLog; } @Transactional public DemandGenerationLog createDemandGenerationLog(CFinancialYear financialYear) { DemandGenerationLog previousDemandGenLog = demandGenerationLogService .getPreviousInstallmentDemandGenerationLog(financialYear.getFinYearRange()); if (previousDemandGenLog != null && previousDemandGenLog.getDemandGenerationStatus().equals(INCOMPLETE)) throw new ApplicationValidationException("TL-008"); if (!installmentYearValidForDemandGeneration(financialYear)) throw new ApplicationValidationException("TL-006"); return demandGenerationLogService.createDemandGenerationLog(financialYear.getFinYearRange()); } @Transactional public DemandGenerationLog updateDemandGenerationLog(CFinancialYear financialYear) { return demandGenerationLogService.completeDemandGenerationLog(demandGenerationLogService .getDemandGenerationLogByInstallmentYear(financialYear.getFinYearRange())); } @Transactional(propagation = Propagation.REQUIRES_NEW, timeout = 7200) public Collection<DemandGenerationLogDetail> generateDemand(DemandGenerationRequest demandGenerationRequest) { DemandGenerationLog demandGenerationLog = demandGenerationLogService .getDemandGenerationLogByInstallmentYear(demandGenerationRequest.getInstallmentYear()); List<DemandGenerationLogDetail> demandGenerationLogDetails = new ArrayList<>(); if (demandGenerationLog != null && !demandGenerationRequest.getLicenseIds().isEmpty()) { Module module = moduleService.getModuleByName(TRADE_LICENSE); CFinancialYear financialYear = financialYearService .getFinacialYearByYearRange(demandGenerationRequest.getInstallmentYear()); Installment installment = installmentDao.getInsatllmentByModuleForGivenDate(module, financialYear.getStartingDate()); int batchUpdateCount = 0; for (Long licenseId : demandGenerationRequest.getLicenseIds()) { TradeLicense license = licenseService.getLicenseById(licenseId); DemandGenerationLogDetail demandGenerationLogDetail = demandGenerationLogService .createOrGetDemandGenerationLogDetail(demandGenerationLog, license); try { if (!installment.equals(license.getCurrentDemand().getEgInstallmentMaster())) { licenseService.raiseDemand(license, module, installment); demandGenerationLogDetail.setDetail(SUCCESSFUL); renewalNotificationService.notifyLicenseRenewal(license, installment); } demandGenerationLogDetail.setStatus(COMPLETED); } catch (RuntimeException e) { LOGGER.warn(ERROR_MSG, license.getLicenseNumber(), e); demandGenerationLogService.updateDemandGenerationLogDetailOnException(demandGenerationLog, demandGenerationLogDetail, e); } flushBatchUpdate(entityManager, ++batchUpdateCount, batchSize); demandGenerationLogDetails.add(demandGenerationLogDetail); } } return demandGenerationLogDetails; } @Transactional public boolean generateLicenseDemand(Long licenseId) { boolean generationSuccess = true; try { TradeLicense license = licenseService.getLicenseById(licenseId); Installment installment = installmentDao.getInsatllmentByModuleForGivenDate( licenseService.getModuleName(), new DateTime().withMonthOfYear(4).withDayOfMonth(1).toDate()); licenseService.raiseDemand(license, licenseService.getModuleName(), installment); renewalNotificationService.notifyLicenseRenewal(license, installment); } catch (ValidationException e) { LOGGER.warn(ERROR_MSG, e); generationSuccess = false; } return generationSuccess; } private boolean installmentYearValidForDemandGeneration(CFinancialYear installmentYear) { DateTime currentDate = new DateTime(); DateTime startOfCalenderDate = new DateTime(installmentYear.getStartingDate()).monthOfYear() .withMinimumValue().dayOfMonth().withMinimumValue().withTimeAtStartOfDay(); DateTime endOfCalenderDate = startOfCalenderDate.monthOfYear().withMaximumValue().dayOfMonth() .withMaximumValue().millisOfDay().withMaximumValue(); return currentDate.isAfter(startOfCalenderDate) && currentDate.isBefore(endOfCalenderDate); } }