Building Desktop Applications with Java. Eric Bader Vishal Agarwal

Transcription

1 Building Desktop Applications with Java Eric Bader Vishal Agarwal

2 Introductions Who are we? Core Engine Java dev team members. Who are you? ArcGIS Desktop developers/users? MapObjects Java users? Current ArcGIS Engine developers? Target Platforms?

3 Agenda Overview Key Features Coarse grain Developer components Working with Swing Custom Commands and Tools What s s new in 9.2

4 Overview of ArcGIS Engine Java Java SDK for developing cross platform desktop GIS Applications. Collection of numerous java objects called arcobjects and tools for mapping, visualization, data management and GIS analysis. Create stand alone GIS apps or Embed GIS functions in existing J2SE applications

5 Some User Applications

6 Architecture Java Visual Beans and utilities ArcObjects Java Proxy Objects Windows / Solaris / Linux

7 ArcGIS Engine Functionality 2D and 3D visualization Read all supported ESRI data formats including the geodatabases. Map authoring (create and edit MXD) ArcGIS level cartography Geo-coding, query, analysis. Simple editing (shp( and pgdb) With Extensions: Multi user editing, Spatial, 3D and Network analysis

8 Java Beans Drag and Drop development MapBean PageLayoutBean ToolbarBean TOCBean ReaderBean SceneBean GlobeBean

9 Tools and Commands More than100 tools and commands included. Utility classes to help you create own custom Tools

10 Things to Note Post Install Initialization EngineInitializer - initializevisualbeans Licensing AoInitialize initialize() AND checkoutextension() Shutting Down AoInitialize

11 Why use Proxy Classes? They are only for getting a handle to the underlying object Polygon polygon = new Polygon(); NOT IPolygon polygon = new PolygonProxy(); IEnvelope e = geom.getenvelope(); ITopologicalOperator topo = new ITopologicalOperatorProxy(e); topo.buffer(4.0);

12 Bridge and GEN Interfaces Certain ArcObjects do not work properly in Java, we create GEN Interfaces: These are created to substitute the un-compatible interfaces Ex. IEnvelopeGEN replaces IEnvelope. BRIDGE Interfaces: For the more basic GIS service, to reduce the overhead. Ex. IGeometryBridge

13 ArcObjects and Swing Tips or Pop-ups don t t work properly? JPopupMenu.setLightWeightPopupEnabled Application Freezes? Use 9.1 SP1 Use Event Dispatcher thread javax.swing.swingutilities.invokelat er(new Runnable(){ public void run(){ //Code Here }});

14 Events and Drawing Don t t add Java Event listeners to the Beans Each Bean has its own event Listener Don t t use the Java.awt.Graphics or Graphics2D to draw grpahics not supported Use GraphicsContainer of ActiveView Several Tools are available. You need BMP images for your graphic elements Use the Graphics draw phase to refresh the map Partial Refresh

15 Special to Java Methods take output as parameters: IBasicMap basicmap [] = {null}; ILayer layer [] = {null}; Object other [] = {null}; int itemtype [] = {0}; Object pindex [] = {null }; toc.hittest(e.getx(), (), e.gety(), itemtype, basicmap,, layer, pindex, other);

16 Custom Commands and Tools BaseCommand & BaseTool as helper classes Key Methods oncreate() and the Constructor Use HookHelper Use isenabled() to maintain the state Use Swing worker thread to invoke Swing components. You cannot use JToolBar with our tools.

17 Summary Runtime Overview Initialization and licensing Coarse grained components Working with Swing Events and Animation Custom Commands and Tools

18 ArcGIS 9.2 Features

19 What s s new in 9.2 Ready-to-use Out-of-the-Box Improve Stability API Improvements New Packages and Extensions File GDB New Visual Components New Help System and samples IDE Integration Support for JDK 1.5 ArcGIS Desktop is Java Enabled

20 API Improvements Support for Casting and InstanceOf No QI or Proxy calls Hand Crafted Geo-Processing API Javadoc improvements No unnecessary constructors, methods

21 New Visual Beans Shared Code! New Controls and Commands Symbology Control Several new tools Identify, measure, editing New Visual Beans for RAD Attribute Table Query Selection Selection by Location Symbology Buffer

22 Samples Reflect API improvements Better Structure Easy to navigate HTML Readme Easier to Run Executable Jars Simple Import into IDEs

23 Java Help System A central repository for all help content Better Structure Easier to get started Several New docs Scenarios Deployment Using IDEs FAQ

24 Geo-processing and Tracking Refined API Tool Generator Support for models written in ArcGIS Desktop Supporting Documents Samples Developer Scenario How to consume custom Routing model How to Track events and time windows

25 IDE Integration ArcGIS Eclipse Plug-ins Java Help System Samples Templates Code shortcuts Geo-Processing Tool Generator Local update site

26 Summary ArcGIS Engine Better API 100% Pure Java experience Performance and stability improvements Better user experience: IDE Integration + Help System + samples More holistic approach for solving GIS Problems Out of box components and extended samples.

27 Developer Resources Engine Developer Kit includes Help System Developer Documentation Sample Code Detailed Object Model Diagrams Utilities and Tools For Additional Support: EDN User Forum:

28 Thanks! More Questions? Join us for Tech Talk 2:30 PM 3:00PM Community Center