benweidig

ext.mainClass = "com.example.Main"

import java.nio.file.Files
import java.nio.file.Paths

task shellScript(type: Jar) {

    // Create fat Jar
    doFirst {
        from {

benweidig

#!/usr/bin/env bash

# Author: Benjamin Weidig <ben@netzgut.net>
# Version: 1 (2017-02-19)

# A helper shell script for starting a Docker container in a more flexible way.
# A container might not start if all the linked containers or ports are not
# available, so now we are able to specify optional resources.
# This script is used at Netzgut to start desktop applications with Docker.

benweidig

@Core
@Contribute(JavaScriptStack.class)
public static void overrideJquery(OrderedConfiguration<StackExtension> conf) {
    conf.override("jquery-library", StackExtension.library("classpath:META-INF/assets/jquery/jquery-3.3.1.min.js"));
}

@Contribute(ModuleManager.class)
public static void contributeModuleManager(MappedConfiguration<String, JavaScriptModuleConfiguration> conf,
                                           @Inject @Symbol(SymbolConstants.PRODUCTION_MODE) boolean productionMode,
                                           AssetSource assetSource) {

benweidig

Build Tapestry 5.5 from source with Eclipse Photon and Java 9 in a Docker container

To have a constant and easy reproducible dev environment we're using Eclipse in a Docker container.

Build Container

1. Save Dockerfile and docker-entrypoint.sh somewhere in the same folder
2. Run docker build -t desktop/eclipse:tapestry . in that folder
3. Wait...

Preprare for Container run

benweidig

let name: String? = articles?.first?.author?.name

benweidig

let name: String = articles?.first?.author?.name ?? "n/a"

benweidig

// Case 1: We know there's a value
Optional<String> withValue = Optional.of("definitly a string");

// Case 2: We 're not sure
Optional<String> maybeValue = Optional.ofNullable(null);

// Case 3: We're sure there's no value
Optional<String> noValue = Optional.empty();

benweidig

Optional<String> withValue = Optional.of("definitly a string");
if (withValue.isPresent()) {
    System.out.println("There's definitly something there!");
}

Optional<String> noValue = Optional.empty();
if (noValue.isPresent() == false) {
    System.out.println("No, nothing...");
}

benweidig

Optional<String> withValue = Optional.of("definitly a string");
String s1 = withValue.get();

Optional<String> noValue = Optional.empty();
String s2 = noValue.get();
//          ^^^^^^^^^^^^^ this throws NoSuchElementException!

benweidig

String result = this.buildResult();
if (result == null) {
    return "n/a";
}

return result.toUpperCase();