Mapping with asynchronous ajax and svg
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Mapping with asynchronous AJAX and SVG. A framework for GIS RIA. Dirk Frigne CEO DFC Software Engineering Jan De Moerloose Sr. Architect DFC Software Engineering. DFC Software Engineering. More info: http://www.dfc.be. Overall Presentation Goal. What is MAJAS (pronounce ‘mayas’)

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Mapping with asynchronous ajax and svg

Mapping with asynchronous AJAX and SVG

A framework for GIS RIA

Dirk Frigne

CEO DFC Software Engineering

Jan De Moerloose

Sr. Architect DFC Software Engineering


Dfc software engineering

DFC Software Engineering

More info: http://www.dfc.be


Overall presentation goal

Overall Presentation Goal

  • What is MAJAS (pronounce ‘mayas’)

  • Revealing the inside architecture

  • Demonstrating the use of the framework (demo)

  • Call for participation


What is majas

What is MAJAS?

  • Open source web mapping framework

  • End-to-end GIS solution

    • server-side: seamless integration with existing J2EE world

    • client-side: stretching WEB 2.0 to the limit: desktop GIS in the browser?


Majas server side architecture

MAJAS Server-side Architecture

majas-core

  • Java/J2EE

  • Provides the basic concepts GIS people want:

    • Feature: just a GIS way to look at a domain object

    • Layer: a bunch of objects with a presentation touch (style)

    • Map: a bunch of layers

    • Application: a bunch of maps and some logic


Majas server side architecture1

MAJAS Server-side Architecture

Application

JSON-RPC

JSONServlet

Application

Application Command

ApplicationController

Map

Map

Map

Custom LayerModel

Datastore LayerModel

Hibernate LayerModel

Hibernate Spatial

GEOTOOLS


Majas server side architecture2

MAJAS Server-side Architecture

  • Extending the core:

    • addnew commands that talk to your domain logic

    • hibernate-spatial

      • create your own domain-model

<hibernate-mapping>

……

<property name="geom"

type="com.cadrie.hibernate.spatial.GeometryUserType">

<column name="geom"/>

</property>

</hibernate-mapping>


Majas server side architecture3

MAJAS Server-side Architecture

<?xml version="1.0"?>

<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"

"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">

<hibernate-mapping>

<class name="com.cadrie.majas.feature.Incident" table="wev_incidenten">

<id name="id" type="long">

<column name="fid" precision="65535" scale="65531" />

<generator class="increment"/>

</id>

<property name="subject" type="string">

<column name="subject" length="255"/>

</property>

<property name="reporter" type="string">

<column name="reporter" length="255"/>

</property>

<property name="geom"

type="com.cadrie.hibernate.spatial.GeometryUserType">

<column name="geom"/>

</property>

</class>

</hibernate-mapping>


Majas client side architecture

MAJAS client-side Architecture

majas-webapp

  • JavaScript/HTML

  • Using AJAX and SVG

  • Based on the dojo toolkit

    • custom widgets/layout

    • nice OO programming model

    • strong I/O package


Majas client side architecture1

MAJAS client-side Architecture

  • Design highlights:

    • Model/view separation

    • Workflow/activity framework for editing

    • Support for rich features with JTS-like geometries (validation and stuff)

    • Performance/caching


Majas client side architecture2

MAJAS client-side Architecture

  • Extensibility:

    • Pluggable actions/tools

    • Plug-in interface

    • Communicating with the outer world: dojo-topics


Majas client side architecture3

MAJAS Client-side Architecture

model updates

User event

ZoomController

PanController

Selectcontrooller

Select

Render

Edit

ToolbarWidget

MapModel

JSON

MapWidget

Layer

Tree

Widget

VectorLayer

Raster Layer

CachingRemoteStore


Mapping with asynchronous ajax and svg

Demo !!!


Case gegis

Case: geGIS

  • Name of the project:geGIS - generic GIS for e-governement

  • Name project owner:CORVE (Coordination Cell e-Gov,Flemish Government)

  • Project Roles DFC:PM, Architecture, Implementation, Transition

  • Third parties: R&D Division SADL / K.U.Leuven

  • Goals of the project:Generic application generator for GIS e-services.


Case gegis1

Case: geGIS

Generic application generator for GIS e-services.

  • Out-of-the-box rich internet GIS applications

  • Vector layer/raster layer support, including WFS/WMS

  • Full editing capabilities

  • Fully customizable user interface

  • Easy configuration, 15’ setup

    MAJAS technology

    .


Invitation to participate

Invitation to participate

  • Ways to contribute:

    • Hibernate spatial

    • Graphics: unify VML/Canvas/Flex ???

    • Dynamic configuration

    • Reprojection

    • Layer models for WMS/WFS


Contactinformation

contactinformation

  • Website: http://majas.dfc.be

  • Mailing lists:

    • [email protected]

    • [email protected]

  • Bug tracking - jira: http://majas.dfc.be/jira/

  • Version control: (svn click on build_majas)

  • E-mail:

    • [email protected]

    • [email protected]


Call for participation

Call for participation

  • Call for participation: (3 levels)

  • Majas users

  • Majas core developers

  • geGIS users (total end-user solution – combination of different OSS projects)

  • Friday code sprint session

  • Discussion about setting up collaboration MAJAS

  • Q&A MAJAS

  • Roadmap MAJAS 1.1 (planned for november 2007

  • Roadmap MAJAS 1.2 (planned for januari 2008

  • Some technical issus like OSGI server integration


Mapping with asynchronous ajax and svg

Q&A


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