Java tutorial
/** * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you under the Apache License, Version 2.0 (the * "License"); you may not use this file except in compliance * with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, * software distributed under the License is distributed on an * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * KIND, either express or implied. See the License for the * specific language governing permissions and limitations * under the License. */ package com.gst.portfolio.savings.service; import static com.gst.portfolio.savings.DepositsApiConstants.FIXED_DEPOSIT_PRODUCT_RESOURCE_NAME; import static com.gst.portfolio.savings.SavingsApiConstants.accountingRuleParamName; import static com.gst.portfolio.savings.SavingsApiConstants.chargesParamName; import static com.gst.portfolio.savings.SavingsApiConstants.taxGroupIdParamName; import java.util.ArrayList; import java.util.List; import java.util.Map; import java.util.Set; import javax.persistence.PersistenceException; import org.apache.commons.lang.exception.ExceptionUtils; import com.gst.accounting.producttoaccountmapping.service.ProductToGLAccountMappingWritePlatformService; import com.gst.infrastructure.core.api.JsonCommand; import com.gst.infrastructure.core.data.ApiParameterError; import com.gst.infrastructure.core.data.CommandProcessingResult; import com.gst.infrastructure.core.data.CommandProcessingResultBuilder; import com.gst.infrastructure.core.data.DataValidatorBuilder; import com.gst.infrastructure.core.exception.PlatformApiDataValidationException; import com.gst.infrastructure.core.exception.PlatformDataIntegrityException; import com.gst.infrastructure.security.service.PlatformSecurityContext; import com.gst.portfolio.charge.domain.Charge; import com.gst.portfolio.interestratechart.service.InterestRateChartAssembler; import com.gst.portfolio.savings.DepositAccountType; import com.gst.portfolio.savings.data.DepositProductDataValidator; import com.gst.portfolio.savings.domain.DepositProductAssembler; import com.gst.portfolio.savings.domain.FixedDepositProduct; import com.gst.portfolio.savings.domain.FixedDepositProductRepository; import com.gst.portfolio.savings.exception.FixedDepositProductNotFoundException; import com.gst.portfolio.tax.domain.TaxGroup; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.dao.DataAccessException; import org.springframework.stereotype.Service; import org.springframework.transaction.annotation.Transactional; @Service public class FixedDepositProductWritePlatformServiceJpaRepositoryImpl implements FixedDepositProductWritePlatformService { private final Logger logger; private final PlatformSecurityContext context; private final FixedDepositProductRepository fixedDepositProductRepository; private final DepositProductDataValidator fromApiJsonDataValidator; private final DepositProductAssembler depositProductAssembler; private final ProductToGLAccountMappingWritePlatformService accountMappingWritePlatformService; private final InterestRateChartAssembler chartAssembler; @Autowired public FixedDepositProductWritePlatformServiceJpaRepositoryImpl(final PlatformSecurityContext context, final FixedDepositProductRepository fixedDepositProductRepository, final DepositProductDataValidator fromApiJsonDataValidator, final DepositProductAssembler depositProductAssembler, final ProductToGLAccountMappingWritePlatformService accountMappingWritePlatformService, final InterestRateChartAssembler chartAssembler) { this.context = context; this.fixedDepositProductRepository = fixedDepositProductRepository; this.fromApiJsonDataValidator = fromApiJsonDataValidator; this.depositProductAssembler = depositProductAssembler; this.logger = LoggerFactory.getLogger(FixedDepositProductWritePlatformServiceJpaRepositoryImpl.class); this.accountMappingWritePlatformService = accountMappingWritePlatformService; this.chartAssembler = chartAssembler; } @Transactional @Override public CommandProcessingResult create(final JsonCommand command) { try { this.fromApiJsonDataValidator.validateForFixedDepositCreate(command.json()); final FixedDepositProduct product = this.depositProductAssembler.assembleFixedDepositProduct(command); this.fixedDepositProductRepository.save(product); // save accounting mappings this.accountMappingWritePlatformService.createSavingProductToGLAccountMapping(product.getId(), command, DepositAccountType.FIXED_DEPOSIT); return new CommandProcessingResultBuilder() // .withEntityId(product.getId()) // .build(); } catch (final DataAccessException e) { handleDataIntegrityIssues(command, e.getMostSpecificCause(), e); return CommandProcessingResult.empty(); } catch (final PersistenceException dve) { Throwable throwable = ExceptionUtils.getRootCause(dve.getCause()); handleDataIntegrityIssues(command, throwable, dve); return CommandProcessingResult.empty(); } } @Transactional @Override public CommandProcessingResult update(final Long productId, final JsonCommand command) { try { this.context.authenticatedUser(); this.fromApiJsonDataValidator.validateForFixedDepositUpdate(command.json()); final FixedDepositProduct product = this.fixedDepositProductRepository.findOne(productId); if (product == null) { throw new FixedDepositProductNotFoundException(productId); } product.setHelpers(this.chartAssembler); final Map<String, Object> changes = product.update(command); if (changes.containsKey(chargesParamName)) { final Set<Charge> savingsProductCharges = this.depositProductAssembler .assembleListOfSavingsProductCharges(command, product.currency().getCode()); final boolean updated = product.update(savingsProductCharges); if (!updated) { changes.remove(chargesParamName); } } if (changes.containsKey(taxGroupIdParamName)) { final TaxGroup taxGroup = this.depositProductAssembler.assembleTaxGroup(command); product.setTaxGroup(taxGroup); if (product.withHoldTax() && product.getTaxGroup() == null) { final List<ApiParameterError> dataValidationErrors = new ArrayList<>(); final DataValidatorBuilder baseDataValidator = new DataValidatorBuilder(dataValidationErrors) .resource(FIXED_DEPOSIT_PRODUCT_RESOURCE_NAME); final Long taxGroupId = null; baseDataValidator.reset().parameter(taxGroupIdParamName).value(taxGroupId).notBlank(); throw new PlatformApiDataValidationException(dataValidationErrors); } } // accounting related changes final boolean accountingTypeChanged = changes.containsKey(accountingRuleParamName); final Map<String, Object> accountingMappingChanges = this.accountMappingWritePlatformService .updateSavingsProductToGLAccountMapping(product.getId(), command, accountingTypeChanged, product.getAccountingType(), DepositAccountType.FIXED_DEPOSIT); changes.putAll(accountingMappingChanges); if (!changes.isEmpty()) { this.fixedDepositProductRepository.save(product); } return new CommandProcessingResultBuilder() // .withEntityId(product.getId()) // .with(changes).build(); } catch (final DataAccessException e) { handleDataIntegrityIssues(command, e.getMostSpecificCause(), e); return CommandProcessingResult.empty(); } catch (final PersistenceException dve) { Throwable throwable = ExceptionUtils.getRootCause(dve.getCause()); handleDataIntegrityIssues(command, throwable, dve); return CommandProcessingResult.empty(); } } @Transactional @Override public CommandProcessingResult delete(final Long productId) { this.context.authenticatedUser(); final FixedDepositProduct product = this.fixedDepositProductRepository.findOne(productId); if (product == null) { throw new FixedDepositProductNotFoundException(productId); } this.fixedDepositProductRepository.delete(product); return new CommandProcessingResultBuilder() // .withEntityId(product.getId()) // .build(); } /* * Guaranteed to throw an exception no matter what the data integrity issue * is. */ private void handleDataIntegrityIssues(final JsonCommand command, final Throwable realCause, final Exception dae) { if (realCause.getMessage().contains("sp_unq_name")) { final String name = command.stringValueOfParameterNamed("name"); throw new PlatformDataIntegrityException("error.msg.product.savings.duplicate.name", "Savings product with name `" + name + "` already exists", "name", name); } else if (realCause.getMessage().contains("sp_unq_short_name")) { final String shortName = command.stringValueOfParameterNamed("shortName"); throw new PlatformDataIntegrityException("error.msg.product.savings.duplicate.short.name", "Savings product with short name `" + shortName + "` already exists", "shortName", shortName); } logAsErrorUnexpectedDataIntegrityException(dae); throw new PlatformDataIntegrityException("error.msg.savingsproduct.unknown.data.integrity.issue", "Unknown data integrity issue with resource."); } private void logAsErrorUnexpectedDataIntegrityException(final Exception dae) { this.logger.error(dae.getMessage(), dae); } }