Showing posts from October, 2017

Build React Native App (4) - Redux, Jest, and NativeBase

From this blog, typescript feature will be added. There are couple of ways to implement static type checking like; flow from facebook, PropTypes and Typescript.Typescript is well integrated with Visual Studio Code and supports better linter, error messages, and intellisense.Reference siteGithub Sample Ex4Currnet versionD:\GitRepo\reactnative>npm --version 6.3.0 D:\GitRepo\reactnative>react-native --version react-native-cli: 2.0.1 react-native: n/a - not inside a React Native project directory D:\GitRepo\reactnative>yarn --version 1.9.4 Creating React Native App$ react-native init ex4 If you want to specify the version, add "--version 0.57.3" at the end.Add NativeBase to React Native$ npm install native-base --save ... + native-base@2.8.1 added 71 packages from 42 contributors, removed 50 packages, updated 829 packages and audited 34989 packages in 138.542s found 0 vulnerabilities $ $ yarn yarn install v1.9.4 warning package-lock.json found. Your project contains l…

How to populate list of dropdown from PowerApp

IntroducitonTo show the list of dropdown, the data should be defined in advance by static or from somewhere such as DB or rest.Collect, Clear, and ClearCollect functionThere are three functions in Powerapp related to defining and clearing dataCollect: This will add list to existing data whenever it is called.Clear: Reset dataClearCollect: This is combination of Clear and Collect. This will reset existing data and will add new valueDefining data for dropdownAdd dropdown to the canvasClick advanced from propertiesDefine list of data at "OnSelect" functionClearCollect(ItemDropdownList, "Item1", "Item2", "Item3") Link the List to dropdown list from "Items" TextboxItemDropdownList Dropdown resultSummaryThis is most simple way to show dropdown list and if you use UpdateContext or other functions, you can poplulate data from REST API.

Running Spring Boot as Windows Service

Download windows service wrapperGo to below site and download latest versionSpring Boot Windows Wrapper Tool LinkSpring Boot Window Wrapper Github linkYoutube VideoComming soonCreate XML file for the servicexml sample file <service> <id>SpringSerivce</id> <name>SpringSerivce</name> <description>Running Spring Boot from Windows Service</description> <env name="SPRINGSERVICE_HOME" value="%BASE%"/> <executable>java</executable> <arguments>-Xrs -Xmx256m -jar "%BASE%\SpringService.jar" --httpPort=8080</arguments> <logmode>rotate</logmode> </service> Rename downloaded fileThe original filename will be winsw.exe to SpringService.exe fileMake sure that xml file and the renmaed executable file is at the same locationRegister as Windows ServiceOpen terminal promptSpringSerivce.exe install Go to windows service and start it.Summa…

Convert CSV to Java Obejct with Spring(1) - Comma or Tab delimiter with OpenCSV

IntroductionSpring batch provides tools to load csv, but I need really simple solution to load CSV to import some of data. From this tutorial, I will show you how to load CSV file to Java Object List.ToolsSpring STSJavaOpenCSVReferenceOpen CSVYoutube videoOpenCSV Annotation and Mapping StrategyThis statement came from OpenCSV manaulThe most powerful mechanism opencsv has for reading and writing CSV files involves defining beans that the fields of the CSV file can be mapped to and from, and annotating the fields of these beans so opencsv can do the rest. In brief, these annotations are:CsvBindByName: Maps a bean field to a field in the CSV file based on the name of the header for that field in the CSV input.CsvBindByPosition: Maps a bean field to a field in the CSV file based on the numerical position of the field in the CSV input.CsvCustomBindByName: The same as CsvBindByName, but must provide its own data conversion class.CsvCustomBindByPosition: The same as CsvBindByPosition, but mu…