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Link program for bit data
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‎bit-link-program-sample/README.md‎

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Bit Link to Program Sample
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This sample shows how you can use the JCICSX API to LINK to a CICS Program, passing through a CHAR container, and returning BIT data as the output of the Program.

‎bit-link-program-sample/pom.xml‎

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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<groupId>com.ibm.cics</groupId>
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<artifactId>bit-link-program-sample</artifactId>
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<version>0.0.1-SNAPSHOT</version>
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<packaging>war</packaging>
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<dependencies>
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<dependency>
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<groupId>javax.servlet</groupId>
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<artifactId>javax.servlet-api</artifactId>
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<version>3.1.0</version>
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<scope>provided</scope>
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</dependency>
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<dependency>
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<groupId>javax.annotation</groupId>
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<artifactId>jsr250-api</artifactId>
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<version>1.0</version>
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<scope>provided</scope>
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</dependency>
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<dependency>
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<!-- <groupId>com.ibm.cics</groupId>
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<artifactId>com.ibm.cics.jcicsx</artifactId> -->
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<groupId>com.ibm.cics.exec-cics-http</groupId>
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<artifactId>jcicsx-http-client</artifactId>
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<version>0.0.8-SNAPSHOT</version>
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</dependency>
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</dependencies>
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<build>
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<pluginManagement>
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<plugins>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-war-plugin</artifactId>
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<version>3.2.2</version>
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<configuration>
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<failOnMissingWebXml>false</failOnMissingWebXml>
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</configuration>
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</plugin>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-compiler-plugin</artifactId>
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<configuration>
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<source>1.8</source>
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<target>1.8</target>
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</configuration>
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</plugin>
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</plugins>
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</pluginManagement>
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</build>
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</project>

‎bit-link-program-sample/src/main/java/sample/SampleServlet.java‎

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package sample;
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import java.io.IOException;
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import java.text.MessageFormat;
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import javax.servlet.ServletException;
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import javax.servlet.annotation.WebServlet;
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import javax.servlet.http.HttpServlet;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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import com.ibm.cics.jcicsx.CICSConditionException;
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import com.ibm.cics.jcicsx.CICSContext;
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/**
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* A sample servlet to demonstrate how to use JCICSX to LINK to a CICS Program, passing through CHAR data and receiving BIT data
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*/
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@WebServlet("/SampleServlet")
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public class SampleServlet extends HttpServlet {
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private static final long serialVersionUID = 1L;
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/**
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* Name of the program to invoke.
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*/
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private static final String PROG_NAME = "PROG";
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/**
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* Name of the channel to use.
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*/
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private static final String CHANNEL = "CHAN";
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/**
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* Name of the container used to send data to the target program.
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*/
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private static final String INPUT_CONTAINER = "INPUTDATA";
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/**
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* Name of the container which will contain the response from the target program.
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*/
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private static final String OUTPUT_CONTAINER = "OUTPUTCONT";
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/**
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* Data to place in the container to be sent to the target program.
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*/
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private static final String INPUTSTRING = "Hello from Java";
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/**
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* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
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*/
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@Override
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protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
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response.setContentType("text/html");
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response.getWriter().print("Hello world!");
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// Message to emit as the response
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byte[] resultStr = null;
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// Gets the current CICS Context for the environment we're running in
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CICSContext task = CICSContext.getCICSContext();
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try {
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// Create a reference to the Program we will invoke and specify the channel
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// Don't syncpoint between remote links, this is the default
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// Link to the program with an input container, containing the input string of "Hello from Java"
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// Get the output from the Program as a byte array
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resultStr = task.createProgramLinkerWithChannel(PROG_NAME, CHANNEL)
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.setSyncOnReturn(false)
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.setStringInput(INPUT_CONTAINER, INPUTSTRING)
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.link()
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.getBytesOutput(OUTPUT_CONTAINER);
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String msg;
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if (resultStr != null) {
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// Format the final message
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msg = MessageFormat.format("Returned from link to {0} with response data {1}",
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PROG_NAME, resultStr);
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}
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else {
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// Missing response container
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msg = MessageFormat.format("Returned from link to {0} with no data", PROG_NAME);
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}
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// Print the final message
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response.getWriter().println(msg);
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} catch (CICSConditionException e) {
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response.getWriter().println("An exception has occured" +
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"\nRESP: " + e.getResp2() +
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"\nRESP2: " + e.getResp2() +
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"\nMessage: " + e.getMessage());
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}
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}
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}

‎bit-link-program-sample/src/main/webapp/WEB-INF/web.xml‎

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<?xml version="1.0" encoding="UTF-8"?>
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<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" version="3.1">
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<login-config>
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<auth-method>CLIENT-CERT</auth-method>
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</login-config>
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</web-app>

‎bit-link-program-sample/src/main/webapp/images/cics.png‎

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‎bit-link-program-sample/src/main/webapp/index.html‎

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<!DOCTYPE html>
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<html>
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<head>
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<title>Java Web Starter Application</title>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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<link rel="stylesheet" href="style.css" />
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</head>
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<body>
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<table>
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<tr>
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<td style='width: 30%;'>
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<img class = "newappIcon" src='images/cics.png'>
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</td>
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<td>
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<!-- The message comes from /SampleServlet -->
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<h1 id = "message"></h1>
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<p class='description'></p> Thanks for creating a <span class="blue">Liberty for Java Starter Application</span>.
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</td>
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</tr>
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</table>
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<!-- Call SampleServlet to get the message -->
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<script type="text/javascript" src="index.js"></script>
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</body>
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</html>

‎bit-link-program-sample/src/main/webapp/index.js‎

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// index.js
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// request message on server
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//Calls SampleServlet to get the message
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xhrGet("SampleServlet", function(responseText){
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// add to document
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var mytitle = document.getElementById('message');
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mytitle.innerHTML = responseText;
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}, function(err){
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console.log(err);
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});
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//utilities
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function createXHR(){
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if(typeof XMLHttpRequest != 'undefined'){
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return new XMLHttpRequest();
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}else{
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try{
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return new ActiveXObject('Msxml2.XMLHTTP');
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}catch(e){
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try{
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return new ActiveXObject('Microsoft.XMLHTTP');
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}catch(e){}
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}
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}
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return null;
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}
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function xhrGet(url, callback, errback){
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var xhr = new createXHR();
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xhr.open("GET", url, true);
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xhr.onreadystatechange = function(){
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if(xhr.readyState == 4){
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if(xhr.status == 200){
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callback(xhr.responseText);
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}else{
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errback('service not available');
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}
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}
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};
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xhr.timeout = 3000;
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xhr.ontimeout = errback;
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xhr.send();
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}
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function parseJson(str){
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return window.JSON ? JSON.parse(str) : eval('(' + str + ')');
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}
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function prettyJson(str){
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// If browser does not have JSON utilities, just print the raw string value.
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return window.JSON ? JSON.stringify(JSON.parse(str), null, ' ') : str;
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}

‎bit-link-program-sample/src/main/webapp/style.css‎

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/* style.css
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* This file provides css styles.
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*/
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body,html {
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background-color: #3b4b54; width : 100%;
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height: 100%;
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margin: 0 auto;
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font-family: "HelveticaNeue-Light", "Helvetica Neue Light", "Helvetica Neue", Helvetica, Arial, "Lucida Grande", sans-serif;
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color: #ffffff;
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}
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a {
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text-decoration: none;
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color: #00aed1;
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}
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a:hover {
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text-decoration: underline;
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}
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.newappIcon {
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padding-top: 10%;
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display: block;
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margin: 0 auto;
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padding-bottom: 2em;
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max-width:200px;
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}
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h1 {
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font-weight: bold;
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font-size: 2em;
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}
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.leftHalf {
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float: left;
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background-color: #26343f;
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width: 45%;
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height: 100%;
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}
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.rightHalf {
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float: right;
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width: 55%;
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background-color: #313f4a;
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height: 100%;
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overflow:auto;
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}
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.description {
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padding-left: 50px;
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padding-right: 50px;
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text-align: center;
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font-size: 1.2em;
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}
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.blue {
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color: #00aed1;
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}
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table {
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table-layout: fixed;
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width: 800px;
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margin: 0 auto;
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word-wrap: break-word;
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padding-top:10%;
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}
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th {
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border-bottom: 1px solid #000;
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}
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th, td {
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text-align: left;
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padding: 2px 20px;
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}
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.env-var {
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text-align: right;
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border-right: 1px solid #000;
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width: 30%;
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}
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pre {
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padding: 0;
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margin: 0;
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}

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