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GeoNetwork Overview

GeoNetwork is a modular application, managed using the spring framework, divided into clear application tiers.

GeoNetwork Architecture

GeoNetwork uses a wide range of technologies:

  • Angular web framwork providing model-view-controller architecture with data model binding
  • Apache Lucene text index to facilitate searching
  • Bootstrap front-end open source toolkit providing response page layout
  • Elasticsearch full-text search
  • GeoTools Java GIS toolkit used to provide a spatial index
  • OpenLayers web mapping framework
  • Saxon XSLT engine used extensively to process XML documents
  • Spring framework Java web application framework used to "wire" components together

GeoNetwork configuration is managed via:

  • Configuration is managed via Hibernate Object/Relational Mapping with H2 Database Engine default for local testing, PostgreSQL recommended for production. Additional dialects are available for environments restricted to Oracle or SQLServer.

  • Data Directory for the management of thumbnails, attachments and other application files

Architecture

GeoNetwork is a modular web application, managed using the spring framework, divided into clear application tiers.

GeoNetwork Architecture

The application is built on top of:

  • Elasticsearch: full-text search
  • Database: record persistance
  • Data directory: attachments and application files

Technologies

Hibernate Object/Relational Mappping

Geonetwork Reference:

Reference:

Java Enterprise Edition

GeoNetwork is a Java "web application", following Java Enterprise Edition standard (establishing Servlet and related interfaces, and the web-application-archive bundle).

Note: Java Enterprise Edition is in the process of renaming to Jakarata Enterprise Edition

The geonetwork.war requires an application server to operate:

  • Jetty application server for standaline distribution.

    Jetty 9 is the last JavaEE compatible release.

  • Apache Tomcat application server for WAR distribution

    Apache Tomcat 9.x is the last JavaEE compatible release.

Reference:

Libraries

mapfish-print-v2

The mapfish-print-v2 library is used for PDF generation, using a combinatino of GeoTools and OpenPDF library.

The library is used for thumbnail generation.

Reference: