AW: WMT Server & Client?

Hi Don and Raj

In order to compile and run the WMSPlugIn class I need the whole new plugin
package. Is it possible to get the beta. I am willing to be a beta tester,
since WMSPlugIn looks like what I would need. I would skip doing it myself
based on OpenMap 4.1.1.

If not, when do you expect 4.2 to be available?

Christof

-----Ursprungliche Nachricht-----
Von: owner-openmap-users@bbn.com [mailto:owner-openmap-users@bbn.com]Im
Auftrag von Donald Dietrick
Gesendet: Freitag, 1. Juni 2001 20:51
An: rs@syncline.com
Cc: Christof Krug; Openmap Discussion
Betreff: Re: WMT Server & Client?

Hi all,

I just wanted to point out to everyone that Raj has been working with
some code
that is not in the OpenMap 4.1.1 release, but will be in the next
release - namely, the com.bbn.openmap.plugin package.

Raj, thanks for posting it.

I'm wrapping up some last minute fixes to the codebase, and then we want
to run through testing on different platforms before we release OpenMap 4.2.

Cheers,

Don

rs@syncline.com wrote:
>
> This may help. Attached is my beta implementation of WMS support
> as a plugin layer. It's a bit rough, so I'd love feedback/improvements.
>
> -Raj
>
> --
> Raj Singh, Syncline
> rs@syncline.com
> MapCiti.com...it's your town on the web
>
> Christof Krug wrote:
>
> > Hi All,
> >
> > I am evaluating OpenMap for a project and I try to get an overview. I
had a
> > look into OpenMap.java, OpenMapApplet.java and the examples.
> >
> > I want to be able to access a WMT compliant MapServer, which only
returns a
> > map as png or jpeg file. I have to write a layer, which requests a new
map
> > from the server, if the user changes the view. Can anybody give me a
hint on
> > classes (layers etc.) which might be helpful to do that?
> >
> > I know OpenMap was used for the Web Mapping Test bed. Is there any
> > documentation on how to set up the OpenMap WMT server and client or is
it
> > not included in the OpenMap distribution?
> >
> > Are there already classes for a client (eventually Applet) - server (not
> > necessary WMT) based solution in OpenMap? Which classes should I look
at?
> >
> > Any hints welcome :)
> >
> > Thanks for your help in advance.
> >
> > Christof
> >
> >
> >
> >
> > --
> > [To unsubscribe to this list send an email to "majdart@bbn.com"
> > with the following text in the BODY of the message "unsubscribe
openmap-users"]
> >
>
> ------------------------------------------------------------------------
> /* **********************************************************************
> * $Source:
/cvs_code/ogcmpp1/src/com/bbn/openmap/plugin/wms/WMSPlugIn.java,v $
> * $Revision: 1.1 $
> * $Date: 2001/05/22 13:35:22 $
> * $Author: rs $
> *
> * **********************************************************************
> */
>
> package com.bbn.openmap.plugin.wms;
>
> import java.awt.Component;
> import java.util.Properties;
> import javax.swing.ImageIcon;
>
> import com.bbn.openmap.PropertyConsumer;
> import com.bbn.openmap.event.MapMouseListener;
> import com.bbn.openmap.image.ImageServerConstants;
> import com.bbn.openmap.image.WMTConstants;
> import com.bbn.openmap.omGraphics.*;
> import com.bbn.openmap.plugin.*;
> import com.bbn.openmap.proj.Projection;
> import com.bbn.openmap.util.Debug;
>
> /**
> * This class asks for an image from an OpenGIS compliant
> * Web Map Server (WMS).
> * It has some properties that you can set in the openmap.properties file:
> *
> * #For the plugin layer
> * pluginlayer.class=com.bbn.openmap.plugin.PlugInLayer
> * pluginlayer.prettyName=Whatever
> * pluginlayer.plugin=com.bbn.openmap.plugin.wms.WMSPlugIn
> * pluginlayer.plugin.host=hostname
> * pluginlayer.plugin.port=port number
> * pluginlayer.plugin.format=image format (JPEG, GIF from
WMTConstants.java)
> * pluginlayer.plugin.transparent=true or false, depends on imageformat
> * pluginlayer.plugin.backgroundColor=RGB hex string (RRGGBB)
> * pluginlayer.plugin.wmscgi=part of URL that makes the request
(servlet/wms)
> * pluginlayer.plugin.wmsversion=OpenGIS WMS version number (1.0.7)
> */
> public class WMSPlugIn extends AbstractPlugIn implements
ImageServerConstants {
>
> /** URL to the server script that responds to WMS map requests */
> protected String wmsName = null;
> /** URL to the server script that responds to WMS map requests */
> protected String wmsServer = null;
> /** GIF, PNG, JPEG, etc. (anything the server supports) */
> protected String imageFormat = null;
> /** specify the color for non-data areas of the image in r,g,b */
> protected String backgroundColor = null;
> /** true=make the backgroundColor transparent */
> protected String transparent = null;
> /** version of the Web map server spec the server supports */
> protected String wmsVersion = null;
> /** comma-separated list of layer names */
> protected String layers = null;
> /** comma-separated list of style names */
> protected String styles = null;
> /** same as wmsServer */
> protected String queryHeader = null;
>
> protected String MAPREQUESTNAME = GETMAP;
>
> public final static String WMSNameProperty = "wmsname";
> public final static String WMSServerProperty = "wmsserver";
> public final static String ImageFormatProperty = "format";
> public final static String BackgroundColorProperty = "backgroundcolor";
> public final static String TransparentProperty = "transparent";
> public static final String WMSVersionProperty = "wmsversion";
> public static final String LayersProperty = "layers";
> public static final String StylesProperty = "styles";
>
> /**
> * add new layers to the server request, using the default style
> */
> public void addLayers(String[] ls) {
> for (int j=0; j<ls.length; j++) {
> layers += ","+ls[j];
> styles += ",default";
> }
> }
>
> /**
> * The getRectangle call is the main call into the PlugIn module.
> * The module is expected to fill the graphics list with objects
> * that are within the screen parameters passed. The Graphics
> * List is NOT automatically cleared with every call to
> * getRectangle. YOU have to do that, if you want it to work that
> * way. The list passed in, if not null, is the same list that
> * should be passed out. If the list passed in is null, then a
> * new OMGraphicList should be allocated and passed out.
> *
> * @param p projection of the screen, holding scale, center
> * coords, height, width.
> * @param list an OMGraphicList to add graphics to. Set to null
> * if a new OMGraphicList should be allocated.
> */
> public OMGraphicList getRectangle(Projection p, OMGraphicList list) {
> if (list == null) {
> list = new OMGraphicList();
> }
>
> if (Debug.debugging("plugin"))
> System.out.println("graphics list:\n"+list.size());
>
> if (queryHeader == null) {
> return list;
> }
>
> String bbox = Float.toString(p.getUpperLeft().getLongitude()) +
> "," +
> Float.toString(p.getLowerRight().getLatitude()) +
> "," +
> Float.toString(p.getLowerRight().getLongitude()) +
> "," +
> Float.toString(p.getUpperLeft().getLatitude());
>
> StringBuffer buf = new StringBuffer(queryHeader);
> buf.append("?" + VERSION + "=" + wmsVersion +
> "&" + REQUEST + "=" + MAPREQUESTNAME +
> "&" + SRS + "=" + "EPSG:4326" +
> "&" + BBOX + "=" + bbox +
> "&" + HEIGHT + "=" + p.getHeight() +
> "&" + WIDTH + "=" + p.getWidth() +
> "&" + EXCEPTIONS + "=" + "INIMAGE");
>
> if (imageFormat != null) {
> buf.append("&" + FORMAT + "=" + imageFormat);
> if (
imageFormat.equals(com.bbn.openmap.image.WMTConstants.IMAGEFORMAT_JPEG) )
> buf.append("&quality=MEDIUM");
> }
>
> if (transparent != null) {
> buf.append("&" + TRANSPARENT + "=true");
> }
>
> if (backgroundColor != null) {
> buf.append("&" + BGCOLOR + "=" + backgroundColor);
> }
>
> if (layers != null)
> buf.append("&" + LAYERS + "=" + layers);
>
> if (styles != null)
> buf.append("&" + STYLES + "=" + styles);
>
> String urlString = buf.toString();
>
> if (Debug.debugging("plugin")) {
> Debug.output("WMSPlugIn.getRectangle() with \"" + urlString + "\"");
> }
>
> java.net.URL url = null;
>
> try {
> url = new java.net.URL(urlString);
> java.net.HttpURLConnection urlc =
(java.net.HttpURLConnection)url.openConnection();
> if (Debug.debugging("plugin")) System.out.println("url content type:
"+urlc.getContentType());
>
> if ( urlc.getContentType().startsWith("text") ) {
> java.io.BufferedReader bin =
> new java.io.BufferedReader(
> new java.io.InputStreamReader(urlc.getInputStream()) );
> String st;
> String message = "";
> while ( (st=bin.readLine()) != null) {
> message += st;
> }
> Debug.error(message);
> } //end if text
>
> else if ( urlc.getContentType().startsWith("image") ) {
> urlc.disconnect();
>
> ImageIcon ii = new ImageIcon(url);
> OMRaster image = new OMRaster((int)0, (int)0, ii);
> image.generate(p);
> list.add(image);
> } // end if image
> } catch (java.net.MalformedURLException murle) {
> Debug.error("WMSPlugIn: URL \"" + urlString + "\" is malformed.");
> } catch (java.io.IOException ioe) {
> Debug.error("Couldn't connect to "+queryHeader);
> }
>
> return list;
> } //end getRectangle
>
> /**
> * Method to set the properties in the PropertyConsumer. The
> * prefix is a string that should be prepended to each property
> * key (in addition to a separating '.') in order for the
> * PropertyConsumer to uniquely identify properies meant for it, in
> * the midst of Properties meant for several objects.
> *
> * @param prefix a String used by the PropertyConsumer to prepend
> * to each property value it wants to look up -
> * setList.getProperty(prefix.propertyKey). If the prefix had
> * already been set, then the prefix passed in should replace that
> * previous value.
> * @param setList a Properties object that the PropertyConsumer
> * can use to retrieve expected properties it can use for
> * configuration.
> */
> public void setProperties(String prefix, Properties setList) {
> this.prefix = prefix;
> String realPrefix = (prefix == null?"":prefix + ".");
>
> wmsName = setList.getProperty(realPrefix + WMSNameProperty);
> wmsServer = setList.getProperty(realPrefix + WMSServerProperty);
>
> if (wmsName == null)
> wmsName = "wmsName";
> if (wmsServer == null)
> Debug.error("WMSPlugIn needs a WMS server.");
>
> queryHeader = wmsServer;
>
> imageFormat = setList.getProperty(realPrefix + ImageFormatProperty);
> transparent = setList.getProperty(realPrefix + TransparentProperty);
> backgroundColor = setList.getProperty(realPrefix +
BackgroundColorProperty);
> wmsVersion = setList.getProperty(realPrefix + WMSVersionProperty);
> if ( wmsVersion == null ) {
> wmsVersion = "1.0.7";
> Debug.output("WMSPlugin: wmsVersion is null");
> }
>
> if (Debug.debugging("plugin"))
> Debug.output("WMSPlugIn: set up with header \"" + queryHeader +
"\"");
>
> int version = Integer.parseInt(wmsVersion.substring(4));
> if ( version < 3 )
> MAPREQUESTNAME = MAP;
> layers = setList.getProperty(realPrefix + LayersProperty);
> styles = setList.getProperty(realPrefix + StylesProperty);
> } //end setProperties
>
> public String getImageFormat() { return imageFormat; }
> public void setImageFormat(String imgfmt) {
> if ( imgfmt.equals(WMTConstants.IMAGEFORMAT_GIF) ||
> imgfmt.equals(WMTConstants.IMAGEFORMAT_JPEG) ||
> imgfmt.equals(WMTConstants.IMAGEFORMAT_PNG) )
> imageFormat = imgfmt;
> }
>
> // make this better!! \\
> public String getServerName() { return wmsServer; }
> public String getPrettyName() { return wmsName; }
> public String getName() { return wmsName; }
>
> public WMSPlugIn() {}
>
> public WMSPlugIn(Component comp) {
> super(comp);
> }
>
> public java.awt.Component getGUI() {
> return null;
> }
>
> public String getLayerMarkers() {
> return null;
> }
> } //end WMSPlugin

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