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.teller.serialization; import java.lang.reflect.Type; import java.math.BigDecimal; import java.util.ArrayList; import java.util.Arrays; import java.util.HashSet; import java.util.List; import java.util.Map; import java.util.Set; import org.apache.commons.lang.StringUtils; import org.joda.time.LocalDate; 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.organisation.teller.exception.InvalidDateInputException; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Component; import com.google.gson.JsonElement; import com.google.gson.reflect.TypeToken; /** * Deserializer of JSON for Teller API. */ @Component public final class TellerCommandFromApiJsonDeserializer { /** * The parameters supported for this command. */ private final Set<String> supportedParameters = new HashSet<>( Arrays.asList("officeId", "name", "description", "startDate", "endDate", "status", "dateFormat", "locale", "isFullDay", "staffId", "hourStartTime", "minStartTime", "hourEndTime", "minEndTime", "txnAmount", "txnDate", "txnNote", "entityType", "entityId", "currencyCode")); private final FromJsonHelper fromApiJsonHelper; @Autowired public TellerCommandFromApiJsonDeserializer(final FromJsonHelper fromApiJsonHelper) { this.fromApiJsonHelper = fromApiJsonHelper; } public void validateForCreateAndUpdateTeller(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("teller"); final JsonElement element = this.fromApiJsonHelper.parse(json); final Long officeId = this.fromApiJsonHelper.extractLongNamed("officeId", element); baseDataValidator.reset().parameter("officeId").value(officeId).notNull().integerGreaterThanZero(); final String name = this.fromApiJsonHelper.extractStringNamed("name", element); baseDataValidator.reset().parameter("name").value(name).notBlank().notExceedingLengthOf(50); final String description = this.fromApiJsonHelper.extractStringNamed("description", element); baseDataValidator.reset().parameter("description").value(description).notExceedingLengthOf(100); final LocalDate startDate = this.fromApiJsonHelper.extractLocalDateNamed("startDate", element); baseDataValidator.reset().parameter("startDate").value(startDate).notNull(); final LocalDate endDate = this.fromApiJsonHelper.extractLocalDateNamed("endDate", element); baseDataValidator.reset().parameter("endDate").value(endDate).ignoreIfNull(); final String status = this.fromApiJsonHelper.extractStringNamed("status", element); baseDataValidator.reset().parameter("status").value(status).notBlank().notExceedingLengthOf(50); if (endDate != null) { if (endDate.isBefore(startDate)) { throw new InvalidDateInputException(startDate.toString(), endDate.toString()); } } throwExceptionIfValidationWarningsExist(dataValidationErrors); } private void throwExceptionIfValidationWarningsExist(final List<ApiParameterError> dataValidationErrors) { if (!dataValidationErrors.isEmpty()) { throw new PlatformApiDataValidationException("validation.msg.validation.errors.exist", "Validation errors exist.", dataValidationErrors); } } public void validateForAllocateCashier(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("teller"); final JsonElement element = this.fromApiJsonHelper.parse(json); final Long staffId = this.fromApiJsonHelper.extractLongNamed("staffId", element); baseDataValidator.reset().parameter("staffId").value(staffId).notNull().integerGreaterThanZero(); final String description = this.fromApiJsonHelper.extractStringNamed("description", element); baseDataValidator.reset().parameter("description").value(description).notExceedingLengthOf(100); final LocalDate startDate = this.fromApiJsonHelper.extractLocalDateNamed("startDate", element); baseDataValidator.reset().parameter("startDate").value(startDate).notNull(); final LocalDate endDate = this.fromApiJsonHelper.extractLocalDateNamed("endDate", element); baseDataValidator.reset().parameter("endDate").value(endDate).notNull(); final Boolean isFullDay = this.fromApiJsonHelper.extractBooleanNamed("isFullDay", element); baseDataValidator.reset().parameter("isFullDay").value(isFullDay).notNull(); if (!isFullDay) { final String hourStartTime = this.fromApiJsonHelper.extractStringNamed("hourStartTime", element); baseDataValidator.reset().parameter("startTime").value(hourStartTime).notBlank(); final String minStartTime = this.fromApiJsonHelper.extractStringNamed("minStartTime", element); baseDataValidator.reset().parameter("startTime").value(minStartTime).notBlank(); final String hourEndTime = this.fromApiJsonHelper.extractStringNamed("hourEndTime", element); baseDataValidator.reset().parameter("hourEndTime").value(hourEndTime).notBlank(); final String minEndTime = this.fromApiJsonHelper.extractStringNamed("minEndTime", element); baseDataValidator.reset().parameter("minEndTime").value(minEndTime).notBlank(); } throwExceptionIfValidationWarningsExist(dataValidationErrors); } public void validateForCashTxnForCashier(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("teller"); final JsonElement element = this.fromApiJsonHelper.parse(json); final BigDecimal txnAmount = this.fromApiJsonHelper.extractBigDecimalWithLocaleNamed("txnAmount", element); baseDataValidator.reset().parameter("txnAmount").value(txnAmount).notNull(); final LocalDate txnDate = this.fromApiJsonHelper.extractLocalDateNamed("txnDate", element); baseDataValidator.reset().parameter("txnDate").value(txnDate).notNull(); final String txnNote = this.fromApiJsonHelper.extractStringNamed("txnNote", element); baseDataValidator.reset().parameter("txnNote").value(txnNote).notExceedingLengthOf(200); final String currencyCode = this.fromApiJsonHelper.extractStringNamed("currencyCode", element); baseDataValidator.reset().parameter("currencyCode").value(currencyCode).notExceedingLengthOf(3); } }