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.accounting.rule.serialization; import java.lang.reflect.Type; import java.util.ArrayList; import java.util.List; import java.util.Map; import java.util.Set; import org.apache.commons.lang.StringUtils; import com.gst.accounting.rule.api.AccountingRuleJsonInputParams; import com.gst.infrastructure.core.data.ApiParameterError; import com.gst.infrastructure.core.data.DataValidatorBuilder; import com.gst.infrastructure.core.exception.InvalidJsonException; import com.gst.infrastructure.core.exception.PlatformApiDataValidationException; import com.gst.infrastructure.core.serialization.FromJsonHelper; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Component; import org.springframework.util.ObjectUtils; import com.google.gson.JsonElement; import com.google.gson.reflect.TypeToken; @Component public class AccountingRuleCommandFromApiJsonDeserializer { /** * The parameters supported for this command. */ private final Set<String> supportedParameters = AccountingRuleJsonInputParams.getAllValues(); private final FromJsonHelper fromApiJsonHelper; @Autowired public AccountingRuleCommandFromApiJsonDeserializer(final FromJsonHelper fromApiJsonHelper) { this.fromApiJsonHelper = fromApiJsonHelper; } public void validateForCreate(final String json) { if (StringUtils.isBlank(json)) { throw new InvalidJsonException(); } final Type typeOfMap = new TypeToken<Map<String, Object>>() { }.getType(); this.fromApiJsonHelper.checkForUnsupportedParameters(typeOfMap, json, this.supportedParameters); final List<ApiParameterError> dataValidationErrors = new ArrayList<>(); final DataValidatorBuilder baseDataValidator = new DataValidatorBuilder(dataValidationErrors) .resource("AccountingRule"); final JsonElement element = this.fromApiJsonHelper.parse(json); final Long accountToDebitId = this.fromApiJsonHelper .extractLongNamed(AccountingRuleJsonInputParams.ACCOUNT_TO_DEBIT.getValue(), element); baseDataValidator.reset().parameter(AccountingRuleJsonInputParams.ACCOUNT_TO_DEBIT.getValue()) .value(accountToDebitId).ignoreIfNull().integerGreaterThanZero(); final Long accountToCreditId = this.fromApiJsonHelper .extractLongNamed(AccountingRuleJsonInputParams.ACCOUNT_TO_CREDIT.getValue(), element); baseDataValidator.reset().parameter(AccountingRuleJsonInputParams.ACCOUNT_TO_CREDIT.getValue()) .value(accountToCreditId).ignoreIfNull().integerGreaterThanZero(); final Long officeId = this.fromApiJsonHelper .extractLongNamed(AccountingRuleJsonInputParams.OFFICE_ID.getValue(), element); baseDataValidator.reset().parameter(AccountingRuleJsonInputParams.OFFICE_ID.getValue()).value(officeId) .notNull().integerGreaterThanZero(); final String name = this.fromApiJsonHelper.extractStringNamed(AccountingRuleJsonInputParams.NAME.getValue(), element); baseDataValidator.reset().parameter(AccountingRuleJsonInputParams.NAME.getValue()).value(name).notBlank() .notExceedingLengthOf(100); final String description = this.fromApiJsonHelper .extractStringNamed(AccountingRuleJsonInputParams.DESCRIPTION.getValue(), element); baseDataValidator.reset().parameter(AccountingRuleJsonInputParams.DESCRIPTION.getValue()).value(description) .ignoreIfNull().notExceedingLengthOf(500); final String[] creditTags = this.fromApiJsonHelper .extractArrayNamed(AccountingRuleJsonInputParams.CREDIT_ACCOUNT_TAGS.getValue(), element); baseDataValidator.reset().parameter(AccountingRuleJsonInputParams.CREDIT_ACCOUNT_TAGS.getValue()) .value(creditTags).ignoreIfNull().arrayNotEmpty(); validateCreditOrDebitTagArray(creditTags, baseDataValidator, AccountingRuleJsonInputParams.CREDIT_ACCOUNT_TAGS.getValue()); final String[] debitTags = this.fromApiJsonHelper .extractArrayNamed(AccountingRuleJsonInputParams.DEBIT_ACCOUNT_TAGS.getValue(), element); baseDataValidator.reset().parameter(AccountingRuleJsonInputParams.DEBIT_ACCOUNT_TAGS.getValue()) .value(debitTags).ignoreIfNull().arrayNotEmpty(); validateCreditOrDebitTagArray(debitTags, baseDataValidator, AccountingRuleJsonInputParams.DEBIT_ACCOUNT_TAGS.getValue()); if (creditTags == null && accountToCreditId == null) { final String creditTag = AccountingRuleJsonInputParams.CREDIT_ACCOUNT_TAGS.getValue(); final String creditAccount = AccountingRuleJsonInputParams.ACCOUNT_TO_CREDIT.getValue(); final StringBuilder validationErrorCode = new StringBuilder("validation.msg.").append(creditAccount) .append(".or.").append(creditTag).append(".required"); final StringBuilder defaultUserMessage = new StringBuilder("The parameter ").append(creditAccount) .append(" or").append(creditTag).append(" required"); final ApiParameterError error = ApiParameterError.parameterError(validationErrorCode.toString(), defaultUserMessage.toString(), creditAccount + "," + creditTag, new Object[] { creditAccount, creditTag }); dataValidationErrors.add(error); } if (debitTags == null && accountToDebitId == null) { final String debitTag = AccountingRuleJsonInputParams.DEBIT_ACCOUNT_TAGS.getValue(); final String debitAccount = AccountingRuleJsonInputParams.ACCOUNT_TO_DEBIT.getValue(); final StringBuilder validationErrorCode = new StringBuilder("validation.msg.").append(debitAccount) .append(".or.").append(debitTag).append(".required"); final StringBuilder defaultUserMessage = new StringBuilder("The parameter ").append(debitAccount) .append(" or").append(debitTag).append(" required"); final ApiParameterError error = ApiParameterError.parameterError(validationErrorCode.toString(), defaultUserMessage.toString(), debitAccount + "," + debitTag, new Object[] { debitAccount, debitTag }); dataValidationErrors.add(error); } final String allowMultipleCredits = this.fromApiJsonHelper.extractStringNamed( AccountingRuleJsonInputParams.ALLOW_MULTIPLE_CREDIT_ENTRIES.getValue(), element); baseDataValidator.reset().parameter(AccountingRuleJsonInputParams.ALLOW_MULTIPLE_CREDIT_ENTRIES.getValue()) .value(allowMultipleCredits).ignoreIfNull().notBlank(); final Boolean allowMultipleCreditEntries = this.fromApiJsonHelper.extractBooleanNamed( AccountingRuleJsonInputParams.ALLOW_MULTIPLE_CREDIT_ENTRIES.getValue(), element); baseDataValidator.reset().parameter(AccountingRuleJsonInputParams.ALLOW_MULTIPLE_CREDIT_ENTRIES.getValue()) .value(allowMultipleCreditEntries).ignoreIfNull(); final String allowMultipleDebits = this.fromApiJsonHelper .extractStringNamed(AccountingRuleJsonInputParams.ALLOW_MULTIPLE_DEBIT_ENTRIES.getValue(), element); baseDataValidator.reset().parameter(AccountingRuleJsonInputParams.ALLOW_MULTIPLE_DEBIT_ENTRIES.getValue()) .value(allowMultipleDebits).ignoreIfNull().notBlank(); final Boolean allowMultipleDebitEntries = this.fromApiJsonHelper.extractBooleanNamed( AccountingRuleJsonInputParams.ALLOW_MULTIPLE_DEBIT_ENTRIES.getValue(), element); baseDataValidator.reset().parameter(AccountingRuleJsonInputParams.ALLOW_MULTIPLE_DEBIT_ENTRIES.getValue()) .value(allowMultipleDebitEntries).ignoreIfNull(); throwExceptionIfValidationWarningsExist(dataValidationErrors); } private void throwExceptionIfValidationWarningsExist(final List<ApiParameterError> dataValidationErrors) { if (!dataValidationErrors.isEmpty()) { throw new PlatformApiDataValidationException(dataValidationErrors); } } public void validateCreditOrDebitTagArray(final String[] creditOrDebitTagArray, final DataValidatorBuilder baseDataValidator, final String parameter) { if (creditOrDebitTagArray != null && !ObjectUtils.isEmpty(creditOrDebitTagArray)) { for (final String tag : creditOrDebitTagArray) { baseDataValidator.reset().parameter(parameter).value(tag).ignoreIfNull().notBlank() .longGreaterThanZero(); } } } public void validateForUpdate(final String json) { if (StringUtils.isBlank(json)) { throw new InvalidJsonException(); } final Type typeOfMap = new TypeToken<Map<String, Object>>() { }.getType(); this.fromApiJsonHelper.checkForUnsupportedParameters(typeOfMap, json, this.supportedParameters); final List<ApiParameterError> dataValidationErrors = new ArrayList<>(); final DataValidatorBuilder baseDataValidator = new DataValidatorBuilder(dataValidationErrors) .resource("AccountingRule"); final JsonElement element = this.fromApiJsonHelper.parse(json); final Long accountToDebitId = this.fromApiJsonHelper .extractLongNamed(AccountingRuleJsonInputParams.ACCOUNT_TO_DEBIT.getValue(), element); baseDataValidator.reset().parameter(AccountingRuleJsonInputParams.ACCOUNT_TO_DEBIT.getValue()) .value(accountToDebitId).ignoreIfNull().notBlank().integerGreaterThanZero(); final Long accountToCreditId = this.fromApiJsonHelper .extractLongNamed(AccountingRuleJsonInputParams.ACCOUNT_TO_CREDIT.getValue(), element); baseDataValidator.reset().parameter(AccountingRuleJsonInputParams.ACCOUNT_TO_CREDIT.getValue()) .value(accountToCreditId).ignoreIfNull().notBlank().integerGreaterThanZero(); final Long officeId = this.fromApiJsonHelper .extractLongNamed(AccountingRuleJsonInputParams.OFFICE_ID.getValue(), element); baseDataValidator.reset().parameter(AccountingRuleJsonInputParams.OFFICE_ID.getValue()).value(officeId) .ignoreIfNull().integerGreaterThanZero(); final String name = this.fromApiJsonHelper.extractStringNamed(AccountingRuleJsonInputParams.NAME.getValue(), element); baseDataValidator.reset().parameter(AccountingRuleJsonInputParams.NAME.getValue()).value(name) .ignoreIfNull().notBlank().notExceedingLengthOf(100); final String description = this.fromApiJsonHelper .extractStringNamed(AccountingRuleJsonInputParams.DESCRIPTION.getValue(), element); baseDataValidator.reset().parameter(AccountingRuleJsonInputParams.DESCRIPTION.getValue()).value(description) .ignoreIfNull().notExceedingLengthOf(500); final String[] creditTags = this.fromApiJsonHelper .extractArrayNamed(AccountingRuleJsonInputParams.CREDIT_ACCOUNT_TAGS.getValue(), element); baseDataValidator.reset().parameter(AccountingRuleJsonInputParams.CREDIT_ACCOUNT_TAGS.getValue()) .value(creditTags).ignoreIfNull().arrayNotEmpty(); validateCreditOrDebitTagArray(creditTags, baseDataValidator, AccountingRuleJsonInputParams.CREDIT_ACCOUNT_TAGS.getValue()); final String[] debitTags = this.fromApiJsonHelper .extractArrayNamed(AccountingRuleJsonInputParams.DEBIT_ACCOUNT_TAGS.getValue(), element); baseDataValidator.reset().parameter(AccountingRuleJsonInputParams.DEBIT_ACCOUNT_TAGS.getValue()) .value(debitTags).ignoreIfNull().arrayNotEmpty(); validateCreditOrDebitTagArray(debitTags, baseDataValidator, AccountingRuleJsonInputParams.DEBIT_ACCOUNT_TAGS.getValue()); final String allowMultipleCredits = this.fromApiJsonHelper.extractStringNamed( AccountingRuleJsonInputParams.ALLOW_MULTIPLE_CREDIT_ENTRIES.getValue(), element); baseDataValidator.reset().parameter(AccountingRuleJsonInputParams.ALLOW_MULTIPLE_CREDIT_ENTRIES.getValue()) .value(allowMultipleCredits).ignoreIfNull().notBlank(); final Boolean allowMultipleCreditEntries = this.fromApiJsonHelper.extractBooleanNamed( AccountingRuleJsonInputParams.ALLOW_MULTIPLE_CREDIT_ENTRIES.getValue(), element); baseDataValidator.reset().parameter(AccountingRuleJsonInputParams.ALLOW_MULTIPLE_CREDIT_ENTRIES.getValue()) .value(allowMultipleCreditEntries).ignoreIfNull(); final String allowMultipleDebits = this.fromApiJsonHelper .extractStringNamed(AccountingRuleJsonInputParams.ALLOW_MULTIPLE_DEBIT_ENTRIES.getValue(), element); baseDataValidator.reset().parameter(AccountingRuleJsonInputParams.ALLOW_MULTIPLE_DEBIT_ENTRIES.getValue()) .value(allowMultipleDebits).ignoreIfNull().notBlank(); final Boolean allowMultipleDebitEntries = this.fromApiJsonHelper.extractBooleanNamed( AccountingRuleJsonInputParams.ALLOW_MULTIPLE_DEBIT_ENTRIES.getValue(), element); baseDataValidator.reset().parameter(AccountingRuleJsonInputParams.ALLOW_MULTIPLE_DEBIT_ENTRIES.getValue()) .value(allowMultipleDebitEntries).ignoreIfNull(); throwExceptionIfValidationWarningsExist(dataValidationErrors); } }