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.infrastructure.accountnumberformat.service; import java.util.LinkedHashMap; import java.util.Map; import javax.persistence.PersistenceException; import org.apache.commons.lang.exception.ExceptionUtils; import com.gst.infrastructure.accountnumberformat.data.AccountNumberFormatDataValidator; import com.gst.infrastructure.accountnumberformat.domain.AccountNumberFormat; import com.gst.infrastructure.accountnumberformat.domain.AccountNumberFormatEnumerations.AccountNumberPrefixType; import com.gst.infrastructure.accountnumberformat.domain.AccountNumberFormatRepositoryWrapper; import com.gst.infrastructure.accountnumberformat.domain.EntityAccountType; import com.gst.infrastructure.core.api.JsonCommand; import com.gst.infrastructure.core.data.CommandProcessingResult; import com.gst.infrastructure.core.data.CommandProcessingResultBuilder; import com.gst.infrastructure.core.exception.PlatformDataIntegrityException; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.dao.DataIntegrityViolationException; import org.springframework.stereotype.Service; import org.springframework.transaction.annotation.Transactional; @Service public class AccountNumberFormatWritePlatformServiceJpaRepositoryImpl implements AccountNumberFormatWritePlatformService { private final static Logger logger = LoggerFactory .getLogger(AccountNumberFormatWritePlatformServiceJpaRepositoryImpl.class); private final AccountNumberFormatRepositoryWrapper accountNumberFormatRepository; private final AccountNumberFormatDataValidator accountNumberFormatDataValidator; @Autowired AccountNumberFormatWritePlatformServiceJpaRepositoryImpl( final AccountNumberFormatRepositoryWrapper accountNumberFormatRepository, final AccountNumberFormatDataValidator accountNumberFormatDataValidator) { this.accountNumberFormatRepository = accountNumberFormatRepository; this.accountNumberFormatDataValidator = accountNumberFormatDataValidator; } @Override @Transactional public CommandProcessingResult createAccountNumberFormat(JsonCommand command) { try { this.accountNumberFormatDataValidator.validateForCreate(command.json()); final Integer accountTypeId = command .integerValueSansLocaleOfParameterNamed(AccountNumberFormatConstants.accountTypeParamName); final EntityAccountType entityAccountType = EntityAccountType.fromInt(accountTypeId); final Integer prefixTypeId = command .integerValueSansLocaleOfParameterNamed(AccountNumberFormatConstants.prefixTypeParamName); AccountNumberPrefixType accountNumberPrefixType = null; if (prefixTypeId != null) { accountNumberPrefixType = AccountNumberPrefixType.fromInt(prefixTypeId); } AccountNumberFormat accountNumberFormat = new AccountNumberFormat(entityAccountType, accountNumberPrefixType); this.accountNumberFormatRepository.save(accountNumberFormat); return new CommandProcessingResultBuilder() // .withEntityId(accountNumberFormat.getId()) // .build(); } catch (final DataIntegrityViolationException dve) { handleDataIntegrityIssues(command, dve.getMostSpecificCause(), dve); return CommandProcessingResult.empty(); } catch (final PersistenceException ee) { Throwable throwable = ExceptionUtils.getRootCause(ee.getCause()); handleDataIntegrityIssues(command, throwable, ee); return CommandProcessingResult.empty(); } } @Override @Transactional public CommandProcessingResult updateAccountNumberFormat(Long accountNumberFormatId, JsonCommand command) { try { final AccountNumberFormat accountNumberFormatForUpdate = this.accountNumberFormatRepository .findOneWithNotFoundDetection(accountNumberFormatId); EntityAccountType accountType = accountNumberFormatForUpdate.getAccountType(); this.accountNumberFormatDataValidator.validateForUpdate(command.json(), accountType); final Map<String, Object> actualChanges = new LinkedHashMap<>(9); if (command.isChangeInIntegerSansLocaleParameterNamed(AccountNumberFormatConstants.prefixTypeParamName, accountNumberFormatForUpdate.getPrefixEnum())) { final Integer newValue = command .integerValueSansLocaleOfParameterNamed(AccountNumberFormatConstants.prefixTypeParamName); final AccountNumberPrefixType accountNumberPrefixType = AccountNumberPrefixType.fromInt(newValue); actualChanges.put(AccountNumberFormatConstants.prefixTypeParamName, accountNumberPrefixType); accountNumberFormatForUpdate.setPrefix(accountNumberPrefixType); } if (!actualChanges.isEmpty()) { this.accountNumberFormatRepository.saveAndFlush(accountNumberFormatForUpdate); } return new CommandProcessingResultBuilder() // .withCommandId(command.commandId()) // .withEntityId(accountNumberFormatId) // .with(actualChanges) // .build(); } catch (final DataIntegrityViolationException dve) { handleDataIntegrityIssues(command, dve.getMostSpecificCause(), dve); return CommandProcessingResult.empty(); } catch (final PersistenceException ee) { Throwable throwable = ExceptionUtils.getRootCause(ee.getCause()); handleDataIntegrityIssues(command, throwable, ee); return CommandProcessingResult.empty(); } } @Override @Transactional public CommandProcessingResult deleteAccountNumberFormat(Long accountNumberFormatId) { AccountNumberFormat accountNumberFormat = this.accountNumberFormatRepository .findOneWithNotFoundDetection(accountNumberFormatId); this.accountNumberFormatRepository.delete(accountNumberFormat); return new CommandProcessingResultBuilder() // .withEntityId(accountNumberFormatId) // .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 dve) { if (realCause.getMessage().contains(AccountNumberFormatConstants.ACCOUNT_TYPE_UNIQUE_CONSTRAINT_NAME)) { final Integer accountTypeId = command .integerValueSansLocaleOfParameterNamed(AccountNumberFormatConstants.accountTypeParamName); final EntityAccountType entityAccountType = EntityAccountType.fromInt(accountTypeId); throw new PlatformDataIntegrityException(AccountNumberFormatConstants.EXCEPTION_DUPLICATE_ACCOUNT_TYPE, "Account Format preferences for Account type `" + entityAccountType.getCode() + "` already exists", "externalId", entityAccountType.getValue(), entityAccountType.getCode()); } logger.error(dve.getMessage(), dve); throw new PlatformDataIntegrityException("error.msg.account.number.format.unknown.data.integrity.issue", "Unknown data integrity issue with resource."); } }