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Showing posts from October, 2017

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

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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 site Github Sample Ex4 Currnet version D:\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. You...
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How to populate list of dropdown from PowerApp

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Introduciton To 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 function There are three functions in Powerapp related to defining and clearing data Collect: This will add list to existing data whenever it is called. Clear: Reset data ClearCollect: This is combination of Clear and Collect. This will reset existing data and will add new value Defining data for dropdown Add dropdown to the canvas Click advanced from properties Define list of data at "OnSelect" function ClearCollect(ItemDropdownList, "Item1", "Item2", "Item3") Link the List to dropdown list from "Items" Textbox ItemDropdownList Dropdown result Summary This is most simple way to show dropdown list and if you use UpdateContext or other functions, you can poplulate data from REST API.
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Running Spring Boot as Windows Service

Download windows service wrapper Go to below site and download latest version Spring Boot Windows Wrapper Tool Link Spring Boot Window Wrapper Github link Youtube Video Comming soon Create XML file for the service xml 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 file The original filename will be winsw.exe to SpringService.exe file Make sure that xml file and the renmaed executable file is at the same location Register as Windows Service Open terminal prompt SpringSerivce.exe install Go to windo...
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Convert CSV to Java Obejct with Spring(1) - Comma or Tab delimiter with OpenCSV

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Introduction Spring 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. Tools Spring STS Java OpenCSV Reference Open CSV Youtube video OpenCSV Annotation and Mapping Strategy This statement came from OpenCSV manaul The 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 s...
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