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.interestratechart.data; import static com.gst.portfolio.interestratechart.InterestRateChartSlabApiConstants.INTERESTRATE_CHART_SLAB_CREATE_REQUEST_DATA_PARAMETERS; import static com.gst.portfolio.interestratechart.InterestRateChartSlabApiConstants.INTERESTRATE_CHART_SLAB_RESOURCE_NAME; import static com.gst.portfolio.interestratechart.InterestRateChartSlabApiConstants.INTERESTRATE_CHART_SLAB_UPDATE_REQUEST_DATA_PARAMETERS; import static com.gst.portfolio.interestratechart.InterestRateChartSlabApiConstants.amountRangeFromParamName; import static com.gst.portfolio.interestratechart.InterestRateChartSlabApiConstants.amountRangeToParamName; import static com.gst.portfolio.interestratechart.InterestRateChartSlabApiConstants.annualInterestRateParamName; import static com.gst.portfolio.interestratechart.InterestRateChartSlabApiConstants.currencyCodeParamName; import static com.gst.portfolio.interestratechart.InterestRateChartSlabApiConstants.descriptionParamName; import static com.gst.portfolio.interestratechart.InterestRateChartSlabApiConstants.fromPeriodParamName; import static com.gst.portfolio.interestratechart.InterestRateChartSlabApiConstants.incentivesParamName; import static com.gst.portfolio.interestratechart.InterestRateChartSlabApiConstants.periodTypeParamName; import static com.gst.portfolio.interestratechart.InterestRateChartSlabApiConstants.toPeriodParamName; import java.lang.reflect.Type; import java.math.BigDecimal; import java.util.ArrayList; import java.util.List; import java.util.Locale; import java.util.Map; import org.apache.commons.lang.StringUtils; 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 com.gst.portfolio.common.domain.PeriodFrequencyType; import com.gst.portfolio.interestratechart.InterestIncentiveApiConstants; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Component; import com.google.gson.JsonArray; import com.google.gson.JsonElement; import com.google.gson.JsonObject; import com.google.gson.reflect.TypeToken; @Component public class InterestRateChartSlabDataValidator { private final FromJsonHelper fromApiJsonHelper; private final InterestIncentiveDataValidator interestIncentiveDataValidator; @Autowired public InterestRateChartSlabDataValidator(final FromJsonHelper fromApiJsonHelper, final InterestIncentiveDataValidator interestIncentiveDataValidator) { this.fromApiJsonHelper = fromApiJsonHelper; this.interestIncentiveDataValidator = interestIncentiveDataValidator; } public void validateCreate(final String json) { if (StringUtils.isBlank(json)) { throw new InvalidJsonException(); } final Type typeOfMap = new TypeToken<Map<String, Object>>() { }.getType(); this.fromApiJsonHelper.checkForUnsupportedParameters(typeOfMap, json, INTERESTRATE_CHART_SLAB_CREATE_REQUEST_DATA_PARAMETERS); final List<ApiParameterError> dataValidationErrors = new ArrayList<>(); final DataValidatorBuilder baseDataValidator = new DataValidatorBuilder(dataValidationErrors) .resource(INTERESTRATE_CHART_SLAB_RESOURCE_NAME); final JsonElement element = this.fromApiJsonHelper.parse(json); final JsonObject objectElement = element.getAsJsonObject(); final Locale locale = this.fromApiJsonHelper.extractLocaleParameter(objectElement); final String currencyCode = this.fromApiJsonHelper.extractStringNamed(currencyCodeParamName, element); baseDataValidator.reset().parameter(currencyCodeParamName).value(currencyCode).notBlank() .notExceedingLengthOf(3); final Boolean isPrimaryGroupingByAmount = null; validateChartSlabsCreate(element, baseDataValidator, locale, isPrimaryGroupingByAmount); throwExceptionIfValidationWarningsExist(dataValidationErrors); } public void validateChartSlabsCreate(final JsonElement element, final DataValidatorBuilder baseDataValidator, final Locale locale, final Boolean isPrimaryGroupingByAmount) { if (this.fromApiJsonHelper.parameterExists(descriptionParamName, element)) { final String description = this.fromApiJsonHelper.extractStringNamed(descriptionParamName, element); baseDataValidator.reset().parameter(descriptionParamName).value(description).notNull(); } final Integer periodType = this.fromApiJsonHelper.extractIntegerNamed(periodTypeParamName, element, locale); if (this.fromApiJsonHelper.parameterExists(periodTypeParamName, element)) { baseDataValidator.reset().parameter(periodTypeParamName).value(periodType) .isOneOfTheseValues(PeriodFrequencyType.integerValues()); } Integer toPeriod = null; final Integer fromPeriod = this.fromApiJsonHelper.extractIntegerNamed(fromPeriodParamName, element, locale); if (this.fromApiJsonHelper.parameterExists(fromPeriodParamName, element)) { baseDataValidator.reset().parameter(fromPeriodParamName).value(fromPeriod).integerZeroOrGreater(); } if ((isPrimaryGroupingByAmount != null && !isPrimaryGroupingByAmount) || (periodType != null || fromPeriod != null)) { baseDataValidator.reset().parameter(periodTypeParamName).value(periodType).notNull(); baseDataValidator.reset().parameter(fromPeriodParamName).value(fromPeriod).notNull(); } if (this.fromApiJsonHelper.parameterExists(toPeriodParamName, element)) { toPeriod = this.fromApiJsonHelper.extractIntegerNamed(toPeriodParamName, element, locale); baseDataValidator.reset().parameter(toPeriodParamName).value(toPeriod).integerGreaterThanZero(); } if (fromPeriod != null && toPeriod != null) { if (fromPeriod > toPeriod) { baseDataValidator.parameter(fromPeriodParamName).value(fromPeriod) .failWithCode("fromperiod.greater.than.to.period"); } } final BigDecimal amountRangeFrom = this.fromApiJsonHelper.extractBigDecimalNamed(amountRangeFromParamName, element, locale); final BigDecimal amountRangeTo = this.fromApiJsonHelper.extractBigDecimalNamed(amountRangeToParamName, element, locale); if (this.fromApiJsonHelper.parameterExists(amountRangeFromParamName, element)) { baseDataValidator.reset().parameter(amountRangeFromParamName).value(amountRangeFrom) .zeroOrPositiveAmount(); if (isPrimaryGroupingByAmount != null && isPrimaryGroupingByAmount) { baseDataValidator.reset().parameter(amountRangeFromParamName).value(amountRangeFrom).notNull(); } } if (this.fromApiJsonHelper.parameterExists(amountRangeToParamName, element)) { baseDataValidator.reset().parameter(amountRangeToParamName).value(amountRangeTo).positiveAmount(); } if (amountRangeFrom == null && fromPeriod == null) { baseDataValidator.failWithCodeNoParameterAddedToErrorCode("fromperiod.or.amountRangeFrom.required"); } if (amountRangeFrom != null && amountRangeTo != null) { if (amountRangeFrom.compareTo(amountRangeTo) > 1) { baseDataValidator.parameter(amountRangeFromParamName).value(fromPeriod) .failWithCode("from.amount.greater.than.to.amount"); } } final BigDecimal annualInterestRate = this.fromApiJsonHelper .extractBigDecimalNamed(annualInterestRateParamName, element, locale); baseDataValidator.reset().parameter(annualInterestRateParamName).value(annualInterestRate).notNull() .zeroOrPositiveAmount(); validateIncentives(element, baseDataValidator, locale); } public void validateUpdate(final String json) { if (StringUtils.isBlank(json)) { throw new InvalidJsonException(); } final Type typeOfMap = new TypeToken<Map<String, Object>>() { }.getType(); this.fromApiJsonHelper.checkForUnsupportedParameters(typeOfMap, json, INTERESTRATE_CHART_SLAB_UPDATE_REQUEST_DATA_PARAMETERS); final List<ApiParameterError> dataValidationErrors = new ArrayList<>(); final DataValidatorBuilder baseDataValidator = new DataValidatorBuilder(dataValidationErrors) .resource(INTERESTRATE_CHART_SLAB_RESOURCE_NAME); final JsonElement element = this.fromApiJsonHelper.parse(json); final JsonObject objectElement = element.getAsJsonObject(); final Locale locale = this.fromApiJsonHelper.extractLocaleParameter(objectElement); final Boolean isPrimaryGroupingByAmount = null; validateChartSlabsUpdate(element, baseDataValidator, locale, isPrimaryGroupingByAmount); throwExceptionIfValidationWarningsExist(dataValidationErrors); } public void validateChartSlabsUpdate(final JsonElement element, final DataValidatorBuilder baseDataValidator, final Locale locale, final Boolean isPrimaryGroupingByAmount) { if (this.fromApiJsonHelper.parameterExists(descriptionParamName, element)) { final String description = this.fromApiJsonHelper.extractStringNamed(descriptionParamName, element); baseDataValidator.reset().parameter(descriptionParamName).value(description).ignoreIfNull(); } if (this.fromApiJsonHelper.parameterExists(periodTypeParamName, element)) { final Integer periodType = this.fromApiJsonHelper.extractIntegerNamed(periodTypeParamName, element, locale); baseDataValidator.reset().parameter(periodTypeParamName).value(periodType) .isOneOfTheseValues(PeriodFrequencyType.integerValues()); if (isPrimaryGroupingByAmount != null && !isPrimaryGroupingByAmount) { baseDataValidator.reset().parameter(periodTypeParamName).value(periodType).notNull(); } } Integer fromPeriod = null; Integer toPeriod = null; if (this.fromApiJsonHelper.parameterExists(fromPeriodParamName, element)) { fromPeriod = this.fromApiJsonHelper.extractIntegerNamed(fromPeriodParamName, element, locale); baseDataValidator.reset().parameter(fromPeriodParamName).value(fromPeriod).integerZeroOrGreater(); if (isPrimaryGroupingByAmount != null && !isPrimaryGroupingByAmount) { baseDataValidator.reset().parameter(fromPeriodParamName).value(fromPeriod).notNull(); } } if (this.fromApiJsonHelper.parameterExists(toPeriodParamName, element)) { toPeriod = this.fromApiJsonHelper.extractIntegerNamed(toPeriodParamName, element, locale); baseDataValidator.reset().parameter(toPeriodParamName).value(toPeriod).integerGreaterThanZero(); } if (fromPeriod != null && toPeriod != null) { if (fromPeriod > toPeriod) { baseDataValidator.parameter(fromPeriodParamName).value(fromPeriod) .failWithCode("fromperiod.greater.than.toperiod"); } } BigDecimal amountRangeFrom = null; BigDecimal amountRangeTo = null; if (this.fromApiJsonHelper.parameterExists(amountRangeFromParamName, element)) { amountRangeFrom = this.fromApiJsonHelper.extractBigDecimalNamed(amountRangeFromParamName, element, locale); baseDataValidator.reset().parameter(amountRangeFromParamName).value(amountRangeFrom) .zeroOrPositiveAmount(); if (isPrimaryGroupingByAmount != null && isPrimaryGroupingByAmount) { baseDataValidator.reset().parameter(amountRangeFromParamName).value(amountRangeFrom).notNull(); } } if (this.fromApiJsonHelper.parameterExists(amountRangeToParamName, element)) { amountRangeTo = this.fromApiJsonHelper.extractBigDecimalNamed(amountRangeToParamName, element, locale); baseDataValidator.reset().parameter(amountRangeToParamName).value(amountRangeTo).positiveAmount(); } if (amountRangeFrom != null && amountRangeTo != null) { if (amountRangeFrom.compareTo(amountRangeTo) > 1) { baseDataValidator.parameter(fromPeriodParamName).value(fromPeriod) .failWithCode("fromperiod.greater.than.toperiod"); } } if (this.fromApiJsonHelper.parameterExists(annualInterestRateParamName, element)) { final BigDecimal annualInterestRate = this.fromApiJsonHelper .extractBigDecimalNamed(annualInterestRateParamName, element, locale); baseDataValidator.reset().parameter(annualInterestRateParamName).value(annualInterestRate).notNull() .zeroOrPositiveAmount(); } if (this.fromApiJsonHelper.parameterExists(currencyCodeParamName, element)) { final String currencyCode = this.fromApiJsonHelper.extractStringNamed(currencyCodeParamName, element); baseDataValidator.reset().parameter(currencyCodeParamName).value(currencyCode).notBlank() .notExceedingLengthOf(3); } validateIncentives(element, baseDataValidator, locale); } private void throwExceptionIfValidationWarningsExist(final List<ApiParameterError> dataValidationErrors) { if (!dataValidationErrors.isEmpty()) { throw new PlatformApiDataValidationException(dataValidationErrors); } } private void validateIncentives(JsonElement element, DataValidatorBuilder baseDataValidator, final Locale locale) { if (element.isJsonObject()) { final JsonObject topLevelJsonElement = element.getAsJsonObject(); if (topLevelJsonElement.has(incentivesParamName) && topLevelJsonElement.get(incentivesParamName).isJsonArray()) { final JsonArray array = topLevelJsonElement.get(incentivesParamName).getAsJsonArray(); for (int i = 0; i < array.size(); i++) { final JsonObject incentiveElement = array.get(i).getAsJsonObject(); if (this.fromApiJsonHelper.parameterExists(InterestIncentiveApiConstants.idParamName, incentiveElement)) { final Long id = this.fromApiJsonHelper .extractLongNamed(InterestIncentiveApiConstants.idParamName, incentiveElement); baseDataValidator.reset().parameter(InterestIncentiveApiConstants.idParamName).value(id) .notNull().integerGreaterThanZero(); this.interestIncentiveDataValidator.validateIncentiveUpdate(incentiveElement, baseDataValidator, locale); } else { this.interestIncentiveDataValidator.validateIncentiveCreate(incentiveElement, baseDataValidator, locale); } } } } } }