com.ontimize.util.gis.server.dataproviders
Class WMSDataProvider

java.lang.Object
  com.ontimize.util.gis.server.dataproviders.WMSDataProvider

All Implemented Interfaces:

IWMSDataProvider, IDataProvider

Direct Known Subclasses:

WMSCatastroDataProvider

public class WMSDataProvider
extends java.lang.Object
implements IDataProvider, IWMSDataProvider

Raster data provider. It uses WMS (Web Map Service) servers as geographic data source.

Xml definition parameters:

Name	Description	Required
wmsURL	WMS server url	Yes
wmsLayer	WMS server layers list used on data request (separated by ",")	Yes
scales	Set of graphic scales used by the data provider. These values will be expressed in metric units by pixel.	Yes
wmsSRS	Layer spatial reference system expressed in EPSG code format. If this parameter is not indicated, default SRS will be used.	No

Sample definition code:

<DataProvider
     class="com.ontimize.util.gis.server.dataproviders.WMSDataProvider"
     type="raster">
     <Attribute name="scales"
     value="1.0;2.0;4.0;8.0;16.0;32.0;64.0;100.0;350.0;1000.0" />
     <Attribute name="wmsURL" value="http://www.idee.es/wms/PNOA/PNOA" />
     <Attribute name="wmsSRS" value="EPSG:23030" />
     <Attribute name="wmsLayer" value="pnoa" />
</DataProvider>

Field Summary

protected java.lang.String	entityName
protected java.lang.String	exceptions
protected org.geotools.styling.StyleFactory	factory
protected boolean	firstTime
protected org.geotools.data.ows.Layer[]	layers
protected boolean	transparent
protected org.geotools.data.wms.WebMapServer	wms
protected static java.lang.String	WMS_LAYER_NAME
protected static java.lang.String	WMS_SRS
protected static java.lang.String	WMS_URL
protected java.lang.String[]	wmsLayersNames
protected java.lang.String	wmsLayersString
protected java.lang.String	wmsSRS
protected java.lang.String	wmsURL

Fields inherited from interface com.ontimize.util.gis.server.dataproviders.IWMSDataProvider

WMS_DESCRIPTION, WMS_KEYWORDS, WMS_LAYERS, WMS_TITLE, WMS_TRANSPARENT_OPTION

Constructor Summary

WMSDataProvider()

WMSDataProvider(java.util.Hashtable parameters)

Method Summary

protected java.awt.image.BufferedImage	createBuffer(int width, int height)
java.util.Hashtable<java.lang.String,java.lang.Object>	getServerInfo() Get the related server info
void	initProvider(java.util.Hashtable<java.lang.String,java.lang.Object> parameters)
protected java.net.URL	parseURLWMSRequest(java.util.Hashtable<java.lang.String,java.lang.Object> appliedFilters)
java.lang.Object	query(java.lang.Object keysValues, java.lang.Object attributes, int sessionId) This method must implement a standard query operation returning the set of data that matches the conditions specified by the keysValues parameter.

Methods inherited from class java.lang.Object

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

Field Detail

WMS_URL

protected static final java.lang.String WMS_URL

See Also:

Constant Field Values

WMS_LAYER_NAME

protected static final java.lang.String WMS_LAYER_NAME

See Also:

Constant Field Values

WMS_SRS

protected static final java.lang.String WMS_SRS

See Also:

Constant Field Values

exceptions

protected final java.lang.String exceptions

See Also:

Constant Field Values

wmsURL

protected java.lang.String wmsURL

wmsSRS

protected java.lang.String wmsSRS

wmsLayersNames

protected java.lang.String[] wmsLayersNames

wmsLayersString

protected java.lang.String wmsLayersString

transparent

protected boolean transparent

firstTime

protected boolean firstTime

wms

protected org.geotools.data.wms.WebMapServer wms

layers

protected org.geotools.data.ows.Layer[] layers

factory

protected org.geotools.styling.StyleFactory factory

entityName

protected java.lang.String entityName

Constructor Detail

WMSDataProvider

public WMSDataProvider()

WMSDataProvider

public WMSDataProvider(java.util.Hashtable parameters)

Method Detail

initProvider

public void initProvider(java.util.Hashtable<java.lang.String,java.lang.Object> parameters)

Specified by:

initProvider in interface IDataProvider

query

public java.lang.Object query(java.lang.Object keysValues,
                              java.lang.Object attributes,
                              int sessionId)
                       throws java.lang.Exception

Description copied from interface: IDataProvider

This method must implement a standard query operation returning the set of data that matches the conditions specified by the keysValues parameter. The attributes defines which attributes (or columns if data is obtained from a database) must be recovered, and keysValues specifies which set of records must be recovered.

Specified by:

query in interface IDataProvider

Parameters:

keysValues - Identifiers for the data

attributes - Data attributes to query

sessionId - Session Id for this user

Returns:

Requested data

Throws:

java.lang.Exception

parseURLWMSRequest

protected java.net.URL parseURLWMSRequest(java.util.Hashtable<java.lang.String,java.lang.Object> appliedFilters)

createBuffer

protected java.awt.image.BufferedImage createBuffer(int width,
                                                    int height)

getServerInfo

public java.util.Hashtable<java.lang.String,java.lang.Object> getServerInfo()

Description copied from interface: IWMSDataProvider

Get the related server info

Specified by:

getServerInfo in interface IWMSDataProvider

Returns:

Server info