org.vfny.geoserver.responses.wms.map
Class GetMapDelegate

java.lang.Object
  org.vfny.geoserver.responses.wms.map.GetMapDelegate

All Implemented Interfaces:

Response

Direct Known Subclasses:

JAIMapResponse, SVGMapResponse

public abstract class GetMapDelegate

extends java.lang.Object

implements Response

Base class for delegates who creates a map based on a GetMap request. Subclasses should implement one or more output format

Constructor Summary

GetMapDelegate()
Creates a new GetMapDelegate object.

Method Summary

protected org.geotools.styling.Style[]	buildStyles(java.util.List styleNames, GeoServer gs)
abstract boolean	canProduce(java.lang.String mapFormat) Evaluates if this Map producer can generate the map format specified by mapFormat
protected abstract void	execute(FeatureTypeInfo[] requestedLayers, org.geotools.data.FeatureResults[] resultLayers, org.geotools.styling.Style[] styles) Execute method for concrete children to implement.
protected void	execute(GetMapRequest request) Executes a GetMapRequest.
void	execute(Request request) Executes a Request, which must be a GetMapRequest.
protected GetMapRequest	getRequest() Gets the map request.
abstract java.util.List	getSupportedFormats() Gets A list of the formats this delegate supports.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.vfny.geoserver.responses.Response

abort, getContentType, writeTo

Constructor Detail

GetMapDelegate

public GetMapDelegate()

Creates a new GetMapDelegate object.

Method Detail

execute

public void execute(Request request)
             throws ServiceException

Executes a Request, which must be a GetMapRequest. Any other will cause a class cast exception.

Specified by:

execute in interface Response

Parameters:

request - A valid GetMapRequest.

Throws:

ServiceException - If the request can not be executed.

execute

protected void execute(GetMapRequest request)
                throws WmsException

Executes a GetMapRequest. Builds the proper objects from the request names.

Parameters:

request - A valid GetMapRequest.

Throws:

WmsException - If anything goes wrong.

execute

protected abstract void execute(FeatureTypeInfo[] requestedLayers,
                                org.geotools.data.FeatureResults[] resultLayers,
                                org.geotools.styling.Style[] styles)
                         throws WmsException

Execute method for concrete children to implement. Each param is an array in the order things should be processed.

Parameters:

requestedLayers - Array of config information of the FeatureTypes to be processed.

resultLayers - Matching array of results from the queries of the requested layers.

styles - Matching array of the styles to process the results with.

Throws:

WmsException - For any problems executing.

buildStyles

protected org.geotools.styling.Style[] buildStyles(java.util.List styleNames,
                                                   GeoServer gs)
                                            throws WmsException

Throws:

WmsException

getRequest

protected GetMapRequest getRequest()

Gets the map request. Used by delegate children to find out more information about the request.

Returns:

The request to be processed.

canProduce

public abstract boolean canProduce(java.lang.String mapFormat)

Evaluates if this Map producer can generate the map format specified by mapFormat

Parameters:

mapFormat - the mime type of the output map format requiered

Returns:

true if class can produce a map in the passed format

getSupportedFormats

public abstract java.util.List getSupportedFormats()

Gets A list of the formats this delegate supports.

Returns:

A list of strings of the formats supported.