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.organisation.provisioning.serialization; 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.PlatformApiDataValidationException; import com.gst.infrastructure.core.serialization.FromJsonHelper; import com.gst.organisation.provisioning.constants.ProvisioningCriteriaConstants; import com.gst.organisation.provisioning.exception.ProvisioningCriteriaCannotBeCreatedException; 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 ProvisioningCriteriaDefinitionJsonDeserializer implements ProvisioningCriteriaConstants { private final FromJsonHelper fromApiJsonHelper; @Autowired public ProvisioningCriteriaDefinitionJsonDeserializer(final FromJsonHelper fromApiJsonHelper) { this.fromApiJsonHelper = fromApiJsonHelper; } public void validateForCreate(final String json) { if (StringUtils.isBlank(json)) { throw new ProvisioningCriteriaCannotBeCreatedException( "error.msg.provisioningcriteria.cannot.be.created", "criterianame, loanproducts[], provisioningcriteria[] params are missing in the request"); } final Type typeOfMap = new TypeToken<Map<String, Object>>() { }.getType(); this.fromApiJsonHelper.checkForUnsupportedParameters(typeOfMap, json, supportedParametersForCreate); final List<ApiParameterError> dataValidationErrors = new ArrayList<>(); final DataValidatorBuilder baseDataValidator = new DataValidatorBuilder(dataValidationErrors) .resource("provisioningcriteria"); final JsonElement element = this.fromApiJsonHelper.parse(json); final Locale locale = this.fromApiJsonHelper.extractLocaleParameter(element.getAsJsonObject()); final String name = this.fromApiJsonHelper .extractStringNamed(ProvisioningCriteriaConstants.JSON_CRITERIANAME_PARAM, element); baseDataValidator.reset().parameter(ProvisioningCriteriaConstants.JSON_CRITERIANAME_PARAM).value(name) .notBlank().notExceedingLengthOf(200); // if the param present, then we should have the loan product ids. If // not we will load all loan products if (this.fromApiJsonHelper.parameterExists(ProvisioningCriteriaConstants.JSON_LOANPRODUCTS_PARAM, element)) { JsonArray jsonloanProducts = this.fromApiJsonHelper .extractJsonArrayNamed(ProvisioningCriteriaConstants.JSON_LOANPRODUCTS_PARAM, element); baseDataValidator.reset().parameter(ProvisioningCriteriaConstants.JSON_LOANPRODUCTS_PARAM) .value(jsonloanProducts).jsonArrayNotEmpty(); // check for unsupported params int i = 0; for (JsonElement obj : jsonloanProducts) { this.fromApiJsonHelper.checkForUnsupportedParameters(obj.getAsJsonObject(), loanProductSupportedParams); Long productId = this.fromApiJsonHelper.extractLongNamed("id", obj.getAsJsonObject()); baseDataValidator.reset().parameter(ProvisioningCriteriaConstants.JSON_LOANPRODUCTS_PARAM) .parameterAtIndexArray(ProvisioningCriteriaConstants.JSON_LOAN_PRODUCT_ID_PARAM, i + 1) .value(productId).notNull().longGreaterThanZero(); i++; } } if (this.fromApiJsonHelper .parameterExists(ProvisioningCriteriaConstants.JSON_PROVISIONING_DEFINITIONS_PARAM, element)) { JsonArray jsonProvisioningCriteria = this.fromApiJsonHelper.extractJsonArrayNamed( ProvisioningCriteriaConstants.JSON_PROVISIONING_DEFINITIONS_PARAM, element); baseDataValidator.reset().parameter(ProvisioningCriteriaConstants.JSON_PROVISIONING_DEFINITIONS_PARAM) .value(jsonProvisioningCriteria).jsonArrayNotEmpty(); for (int i = 0; i < jsonProvisioningCriteria.size(); i++) { JsonObject jsonObject = jsonProvisioningCriteria.get(i).getAsJsonObject(); this.fromApiJsonHelper.checkForUnsupportedParameters(jsonObject, provisioningcriteriaSupportedParams); final Long categoryId = this.fromApiJsonHelper .extractLongNamed(ProvisioningCriteriaConstants.JSON_CATEOGRYID_PARAM, jsonObject); baseDataValidator.reset() .parameter(ProvisioningCriteriaConstants.JSON_PROVISIONING_DEFINITIONS_PARAM) .parameterAtIndexArray(ProvisioningCriteriaConstants.JSON_CATEOGRYID_PARAM, i + 1) .value(categoryId).notNull().longGreaterThanZero(); Long minimumAge = this.fromApiJsonHelper .extractLongNamed(ProvisioningCriteriaConstants.JSON_MINIMUM_AGE_PARAM, jsonObject); baseDataValidator.reset().parameter(ProvisioningCriteriaConstants.JSON_MINIMUM_AGE_PARAM) .parameterAtIndexArray(ProvisioningCriteriaConstants.JSON_MINIMUM_AGE_PARAM, i + 1) .value(minimumAge).notNull().longZeroOrGreater(); Long maximumAge = this.fromApiJsonHelper .extractLongNamed(ProvisioningCriteriaConstants.JSON_MAXIMUM_AGE_PARAM, jsonObject); baseDataValidator.reset().parameter(ProvisioningCriteriaConstants.JSON_MAXIMUM_AGE_PARAM) .parameterAtIndexArray(ProvisioningCriteriaConstants.JSON_MAXIMUM_AGE_PARAM, i + 1) .value(maximumAge).notNull().longGreaterThanNumber( ProvisioningCriteriaConstants.JSON_MINIMUM_AGE_PARAM, minimumAge, (i + 1)); BigDecimal provisioningpercentage = this.fromApiJsonHelper.extractBigDecimalNamed( ProvisioningCriteriaConstants.JSON_PROVISIONING_PERCENTAGE_PARAM, jsonObject, locale); baseDataValidator.reset() .parameter(ProvisioningCriteriaConstants.JSON_PROVISIONING_PERCENTAGE_PARAM) .parameterAtIndexArray(ProvisioningCriteriaConstants.JSON_PROVISIONING_PERCENTAGE_PARAM, i + 1) .value(provisioningpercentage).notNull().zeroOrPositiveAmount(); Long liabilityAccountId = this.fromApiJsonHelper .extractLongNamed(ProvisioningCriteriaConstants.JSON_LIABILITY_ACCOUNT_PARAM, jsonObject); baseDataValidator.reset().parameter(ProvisioningCriteriaConstants.JSON_LIABILITY_ACCOUNT_PARAM) .parameterAtIndexArray(ProvisioningCriteriaConstants.JSON_LIABILITY_ACCOUNT_PARAM, i + 1) .value(liabilityAccountId).notNull().longGreaterThanZero(); Long expenseAccountId = this.fromApiJsonHelper .extractLongNamed(ProvisioningCriteriaConstants.JSON_EXPENSE_ACCOUNT_PARAM, jsonObject); baseDataValidator.reset().parameter(ProvisioningCriteriaConstants.JSON_EXPENSE_ACCOUNT_PARAM) .parameterAtIndexArray(ProvisioningCriteriaConstants.JSON_EXPENSE_ACCOUNT_PARAM, i + 1) .value(expenseAccountId).notNull().longGreaterThanZero(); } } else { baseDataValidator.reset().parameter(ProvisioningCriteriaConstants.JSON_PROVISIONING_DEFINITIONS_PARAM) .jsonArrayNotEmpty(); } if (!dataValidationErrors.isEmpty()) { throw new PlatformApiDataValidationException(dataValidationErrors); } } public void validateForUpdate(final String json) { if (StringUtils.isBlank(json)) { throw new ProvisioningCriteriaCannotBeCreatedException( "error.msg.provisioningcriteria.cannot.be.updated", "update params are missing in the request"); } final Type typeOfMap = new TypeToken<Map<String, Object>>() { }.getType(); this.fromApiJsonHelper.checkForUnsupportedParameters(typeOfMap, json, supportedParametersForUpdate); final List<ApiParameterError> dataValidationErrors = new ArrayList<>(); final DataValidatorBuilder baseDataValidator = new DataValidatorBuilder(dataValidationErrors) .resource("provisioningcriteria"); final JsonElement element = this.fromApiJsonHelper.parse(json); final Locale locale = this.fromApiJsonHelper.extractLocaleParameter(element.getAsJsonObject()); if (this.fromApiJsonHelper.parameterExists(ProvisioningCriteriaConstants.JSON_CRITERIANAME_PARAM, element)) { final String name = this.fromApiJsonHelper .extractStringNamed(ProvisioningCriteriaConstants.JSON_CRITERIANAME_PARAM, element); baseDataValidator.reset().parameter(ProvisioningCriteriaConstants.JSON_CRITERIANAME_PARAM).value(name) .notBlank().notExceedingLengthOf(200); } // if the param present, then we should have the loan product ids. If // not we will load all loan products if (this.fromApiJsonHelper.parameterExists(ProvisioningCriteriaConstants.JSON_LOANPRODUCTS_PARAM, element)) { JsonArray jsonloanProducts = this.fromApiJsonHelper .extractJsonArrayNamed(ProvisioningCriteriaConstants.JSON_LOANPRODUCTS_PARAM, element); baseDataValidator.reset().parameter(ProvisioningCriteriaConstants.JSON_LOANPRODUCTS_PARAM) .value(jsonloanProducts).jsonArrayNotEmpty(); // check for unsupported params int i = 0; for (JsonElement obj : jsonloanProducts) { Long productId = this.fromApiJsonHelper.extractLongNamed("id", obj.getAsJsonObject()); baseDataValidator.reset().parameter(ProvisioningCriteriaConstants.JSON_LOANPRODUCTS_PARAM) .parameterAtIndexArray(ProvisioningCriteriaConstants.JSON_LOAN_PRODUCT_ID_PARAM, i + 1) .value(productId).notNull().longGreaterThanZero(); i++; } } if (this.fromApiJsonHelper .parameterExists(ProvisioningCriteriaConstants.JSON_PROVISIONING_DEFINITIONS_PARAM, element)) { JsonArray jsonProvisioningCriteria = this.fromApiJsonHelper.extractJsonArrayNamed( ProvisioningCriteriaConstants.JSON_PROVISIONING_DEFINITIONS_PARAM, element); baseDataValidator.reset().parameter(ProvisioningCriteriaConstants.JSON_PROVISIONING_DEFINITIONS_PARAM) .value(jsonProvisioningCriteria).jsonArrayNotEmpty(); for (int i = 0; i < jsonProvisioningCriteria.size(); i++) { // check for unsupported params JsonObject jsonObject = jsonProvisioningCriteria.get(i).getAsJsonObject(); final Long categoryId = this.fromApiJsonHelper .extractLongNamed(ProvisioningCriteriaConstants.JSON_CATEOGRYID_PARAM, jsonObject); baseDataValidator.reset() .parameter(ProvisioningCriteriaConstants.JSON_PROVISIONING_DEFINITIONS_PARAM) .parameterAtIndexArray(ProvisioningCriteriaConstants.JSON_CATEOGRYID_PARAM, i + 1) .value(categoryId).notNull().longGreaterThanZero(); Long minimumAge = this.fromApiJsonHelper .extractLongNamed(ProvisioningCriteriaConstants.JSON_MINIMUM_AGE_PARAM, jsonObject); baseDataValidator.reset() .parameter(ProvisioningCriteriaConstants.JSON_PROVISIONING_DEFINITIONS_PARAM) .parameterAtIndexArray(ProvisioningCriteriaConstants.JSON_MINIMUM_AGE_PARAM, i + 1) .value(minimumAge).notNull().longZeroOrGreater(); Long maximumAge = this.fromApiJsonHelper .extractLongNamed(ProvisioningCriteriaConstants.JSON_MAXIMUM_AGE_PARAM, jsonObject); baseDataValidator.reset().parameter(ProvisioningCriteriaConstants.JSON_MAXIMUM_AGE_PARAM) .parameterAtIndexArray(ProvisioningCriteriaConstants.JSON_MAXIMUM_AGE_PARAM, i + 1) .value(maximumAge).notNull().longGreaterThanNumber( ProvisioningCriteriaConstants.JSON_MINIMUM_AGE_PARAM, minimumAge, (i + 1)); BigDecimal provisioningpercentage = this.fromApiJsonHelper.extractBigDecimalNamed( ProvisioningCriteriaConstants.JSON_PROVISIONING_PERCENTAGE_PARAM, jsonObject, locale); baseDataValidator.reset() .parameter(ProvisioningCriteriaConstants.JSON_PROVISIONING_DEFINITIONS_PARAM) .parameterAtIndexArray(ProvisioningCriteriaConstants.JSON_PROVISIONING_PERCENTAGE_PARAM, i + 1) .value(provisioningpercentage).notNull().zeroOrPositiveAmount(); Long liabilityAccountId = this.fromApiJsonHelper .extractLongNamed(ProvisioningCriteriaConstants.JSON_LIABILITY_ACCOUNT_PARAM, jsonObject); baseDataValidator.reset() .parameter(ProvisioningCriteriaConstants.JSON_PROVISIONING_DEFINITIONS_PARAM) .parameterAtIndexArray(ProvisioningCriteriaConstants.JSON_LIABILITY_ACCOUNT_PARAM, i + 1) .value(liabilityAccountId).notNull().longGreaterThanZero(); Long expenseAccountId = this.fromApiJsonHelper .extractLongNamed(ProvisioningCriteriaConstants.JSON_EXPENSE_ACCOUNT_PARAM, jsonObject); baseDataValidator.reset() .parameter(ProvisioningCriteriaConstants.JSON_PROVISIONING_DEFINITIONS_PARAM) .parameterAtIndexArray(ProvisioningCriteriaConstants.JSON_EXPENSE_ACCOUNT_PARAM, i + 1) .value(expenseAccountId).notNull().longGreaterThanZero(); } } if (!dataValidationErrors.isEmpty()) { throw new PlatformApiDataValidationException(dataValidationErrors); } } }