6. Controlling the Output of GeoServer | Mastering Geoserver

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Mastering Geoserver

By : Henderson

4.6 (7)

Mastering Geoserver

4.6 (7)

By: Henderson

Overview of this book

If you are a GIS professional who intends to explore advanced techniques and get more out of GeoServer deployment rather than simply delivering good looking maps, then this book is for you.

Preface

Preface

What this book covers

What you need for this book

Who this book is for

Conventions

Reader feedback

Customer support

Free Chapter

1. Installing GeoServer for Production

1. Installing GeoServer for Production

Java requirements

Installing Apache Tomcat

Deploying GeoServer to Apache Tomcat

Configuring GeoServer for maximum performance and availability

Configuring multiple GeoServer instances on a single server

Summary

2. Working with Raster Data

2. Working with Raster Data

Increasing the raster formats supported by GeoServer

How to optimize raster data for better performance

How to serve very large raster datasets

Summary

3. Working with Vector Data in Spatial Databases

3. Working with Vector Data in Spatial Databases

Database connection pooling

JNDI connection or JDBC

General database connection parameters

Serving data from PostGIS

Serving data from Oracle

Serving data from Microsoft SQL Server and SQL Azure

Creating SQL View layers

Summary

4. Using GeoServer to Serve Complex Features

4. Using GeoServer to Serve Complex Features

The difference between simple and complex features

Using GeoServer application schemas

Publishing data with an application schema

Summary

5. Using GeoServer as a Proxy

5. Using GeoServer as a Proxy

Defining cascaded services

Using cascaded services

Creating a cascaded WMS connection

Connecting to a cascaded WFS

Extending server capabilities

Summary

6. Controlling the Output of GeoServer

6. Controlling the Output of GeoServer

Styling data with Styled Layer Descriptor

Styling data using Cascaded Style Sheets

Per-request styling of map features

Per-request filtering of data

Using Freemarker templates to change WMS responses

Summary

7. Using GeoServer to Print Maps

7. Using GeoServer to Print Maps

The GeoServer print extension

Installing the print extension

Configuring the print extension

Defining print layouts

Making print requests

An example OpenLayers application

Summary

8. Integrating GeoServer in a Spatial Data Infrastructure

8. Integrating GeoServer in a Spatial Data Infrastructure

Definition of a spatial data infrastructure

User perspective – editing data through WFS-T

User perspective – consuming data

Summary

9. GeoServer as a Spatial Analysis Platform

9. GeoServer as a Spatial Analysis Platform

Understanding Web Processing Services

Installing the WPS extension

Using WPS to perform spatial analysis

Understanding GeoScript

Installing the GeoScript extension

Scripting GeoServer

Summary

10. Enterprise Security and GeoServer

10. Enterprise Security and GeoServer

Authentication and authorization

Using Active Directory for user authentication and authorization

Using Digest for user authentication

Using HTTP Header for user authentication

Summary

11. Monitoring the Performance and Health of GeoServer

11. Monitoring the Performance and Health of GeoServer

The importance of monitoring GeoServer

The GeoServer monitor extension

Stress testing GeoServer

Analyzing the results of the stress test

Summary

12. Optimizing GeoServer for Production

12. Optimizing GeoServer for Production

Deploying GeoServer in a cluster

Optimizing GeoServer

Automatic recovery from service failures

Summary

Index

Index

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Per-request styling of map features

It is possible to ask GeoServer to render features in a style that does not exist within its own catalog. This ability to do per-request styling is also referred to as external styles.

Note

Per-request styling of map features is part of the OGC WMS standard. Any web mapping software that conforms to the standard will contain a similar capability. As this is a book on GeoServer, we will explore GeoServer's implementation of the WMS standard.

There are three different ways in which an external style can be provided to GeoServer:

The SLD= parameter can be set on the GetMap GET request to point at an Internet-accessible SLD file
The SLD_BODY= parameter can be set on the GetMap GET request to provide the SLD document as a URL-encoded XML
The SLD can be provided in the XML GetMap POST request body

The mode in which GeoServer works to apply the styling depends on whether or not the LAYERS parameter is included in the GetMap request. When the LAYERS parameter is not...

Visually different images

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