Tutorial: Upload from Java, Download from JavaScript

This tutorial.describes how a simple unit of data, the text 'Hello, Java!' can be uploaded from a Java application and retrieved with a JavaScript application.  Upload from Java This section lists all steps required to create a small application that store the text 'Hello, World' in the Appjangle cloud database. Step 1: Download Client Libraries … Continue reading Tutorial: Upload from Java, Download from JavaScript

Jangle Java: Upload & Load Data

This tutorial illustrates in a few simple steps how to upload and download data from a Java application into the appjangle platform. You can find the source code of the completed steps 2 & 3 on github: T_JangleJavaShort_Upload.java U_JangleJavaShort_Load.java Step 1: Link Client Libraries To upload data to appjangle from a Java application, the onedb … Continue reading Jangle Java: Upload & Load Data

Jangle Java: Synchronization

This tutorial is a continutation of the 'Jangle Java: Upload & Load' tutorial. Make sure to follow the steps of this tutorial first before doing this one. This tutorial shows the synchronization capabilities of the appjangle Java client. In particular, the well known producer-consumer scenario is applied on the simple pizza parlor data defined in … Continue reading Jangle Java: Synchronization

Threads in GWT?

While it is widely reported that Google Web Toolkit does not support Java Threads and multi-threading, a number of aspects of concurrent applications can be emulated in GWT's single thread JavaScript world. The particular features that are relatively easy to emulate are: Timers Background Execution Locks 'Thread-safe' Collections An important theme in my implementation of … Continue reading Threads in GWT?

onedb 0.0.3: Client API and Documentation Updated

A new version for the onedb client libraries (0.0.3) is now available for direct download or as maven dependency. The new versions will work with any API key obtained from http://www.onedb.de. onedb Java Test Toolkit: onedb Java Client: onedb release repository (in <project>): API Improvments This release primarily implements feedback from Michael received by email … Continue reading onedb 0.0.3: Client API and Documentation Updated

A Practical Guide on Node Types in onedb

onedb is at its heart a cloud-based platform to connect pieces of information from various applications. These 'pieces of information' are represented and accessed in various ways in the onedb API. The article "onedb Architecture and Design" provides a conceptual definition of most ways in which these 'pieces of information' are represented and the article … Continue reading A Practical Guide on Node Types in onedb

onedb Tutorial: Getting Started and First Steps

onedb is the database engine at the heart of the appjangle platform. This tutorial gives an overview of a number of capabilities of the onedb engine. The following topics are discussed in this tutorial: Part I: Set Up Getting an API key Download the client library Linking the client library (eclipse or maven) Initializing onedb … Continue reading onedb Tutorial: Getting Started and First Steps