svn-gvsig-desktop / branches / v2_0_0_prep / libraries / org.gvsig.arcims / src / org / gvsig / remoteclient / arcims / ArcImsProtImageHandler.java @ 32367
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/* gvSIG. Geographic Information System of the Valencian Government
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*
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* Copyright (C) 2007-2008 Infrastructures and Transports Department
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* of the Valencian Government (CIT)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*
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*/
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/*
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* AUTHORS (In addition to CIT):
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* 2010 Prodevelop S.L. main development
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* http://www.prodevelop.es
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*/
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package org.gvsig.remoteclient.arcims; |
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import java.awt.Rectangle; |
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import java.awt.geom.Area; |
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import java.awt.geom.Rectangle2D; |
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import java.io.BufferedReader; |
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import java.io.File; |
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import java.io.FileNotFoundException; |
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import java.io.FileReader; |
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import java.io.IOException; |
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import java.io.Reader; |
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import java.net.ConnectException; |
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import java.net.MalformedURLException; |
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import java.net.URL; |
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import java.util.Vector; |
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import org.cresques.cts.IProjection; |
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import org.gvsig.remoteclient.arcims.exceptions.ArcImsException; |
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import org.gvsig.remoteclient.arcims.utils.ArcImsDownloadUtils; |
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import org.gvsig.remoteclient.arcims.utils.GetImageTags; |
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import org.gvsig.remoteclient.arcims.utils.ServiceInfoTags; |
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import org.gvsig.remoteclient.arcims.utils.ServiceInformation; |
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import org.gvsig.remoteclient.arcims.utils.ServiceInformationLayer; |
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import org.gvsig.remoteclient.exceptions.ServerErrorException; |
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import org.gvsig.remoteclient.utils.BoundaryBox; |
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import org.kxml2.io.KXmlParser; |
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import org.slf4j.Logger; |
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import org.slf4j.LoggerFactory; |
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import org.xmlpull.v1.XmlPullParserException; |
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/**
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* <p>
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* Describes the handler to communicate to a ArcIMS ImageServer
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* </p>
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*/
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public class ArcImsProtImageHandler extends ArcImsProtocolHandler { |
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private static Logger logger = LoggerFactory |
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.getLogger(ArcImsProtImageHandler.class.getName()); |
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/**
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* Method to obtain the correct extent of the Service in a specific SRS
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*
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* @param srsFlyr
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* The SRS of the View
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* @param status
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* @return Rectangle2D The boundary box of the Service
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* @throws ArcImsException
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*/
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public Rectangle2D getServiceExtent(IProjection srsFlyr, ArcImsStatus status) |
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throws ArcImsException {
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Rectangle2D rect = new Rectangle(); |
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try {
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URL url = new URL(this.buildCapabilitiesRequest(status)); |
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/**
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* The seriveInfo
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*/
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ServiceInformation si = status.getServiceInfo(); |
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/**
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* Gets de Decimal Separator and SRS from the status.ServiceInfo
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*/
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char ds = si.getSeparators().getDs();
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String srsSI = si.getFeaturecoordsys();
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/**
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* The EPSG code that image requested will have, the ArcIMS server
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* will reproject data into this code, see <a
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* href="http://www.epsg.org">EPSG</a>
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*/
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String srsView = srsFlyr.getAbrev();
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/**
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* We suppose that status.getSrs() allways will give a string
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* started by this string
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*/
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String ini_srs = ServiceInfoTags.vINI_SRS;
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/**
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* Assign the srs from the status
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*
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* @see org.gvsig.remoteClient.RemoteClientStatus#getSrs()
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*/
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if (srsView.startsWith(ini_srs)) {
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srsView = srsView.substring(ini_srs.length()).trim(); |
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} |
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/**
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* If both SRS are the same or status we pass empty strings
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*/
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if (srsView.equalsIgnoreCase(srsSI)) {
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srsView = "";
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srsSI = "";
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} |
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/**
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* Build the custom request for this extent
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*/
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String request = ArcXMLImage.getCustomExtentRequest(srsSI,
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// ServiceInfo SRS
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null, // envelope |
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srsView, // SRS of the view
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ds, // Decimal separator
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null, // Image size |
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"", si.getLayer(0).getId() // A valid Layer Id |
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); |
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if (status.verbose) {
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System.err.println(request);
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} |
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logger.info("Requesting Service Extent XML");
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File response = ArcImsDownloadUtils.doRequestPost(url, request,
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"getServiceExtent.xml");
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rect = parseEnvelopeTag(new FileReader(response), ds); |
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} catch (MalformedURLException e) { |
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logger.error(e.getMessage(), e); |
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throw new ArcImsException("arcims_server_error"); |
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} catch (FileNotFoundException e) { |
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logger.error(e.getMessage(), e); |
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throw new ArcImsException("arcims_server_error"); |
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} |
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return rect;
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} |
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/**
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* <p>
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* It will send a GetFeatureInfo request to the ArcIms Parsing the response
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* and redirecting the info to the ArcIms client
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* </p>
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*
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* @throws ArcImsException
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*/
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public String getElementInfo(ArcImsStatus status, int x, int y, |
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int featureCount) throws ArcImsException { |
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double iViewX;
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double iViewY;
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double iServiceX;
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double iServiceY;
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double xReal;
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double yReal;
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// double dist;
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int ratio;
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double currentScale;
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/**
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* ServiceInformation of the current Service
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*/
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ServiceInformation si = status.getServiceInfo(); |
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char ds = si.getSeparators().getDs();
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/**
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* Determine the SRS to do all the requests, if the ServiceInformation
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* doesn't provide a valid SRS, then we use the status srs
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*/
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String srs = status.getSrs().substring(
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ServiceInfoTags.vINI_SRS.length()).trim(); |
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/**
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* The geographic extent of the current window
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*/
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Rectangle2D geoServiceExtent = new Rectangle(); |
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Rectangle2D geoViewExtent = status.getEnvelopeRect();
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/**
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* If the SRS's are different we need a reprojection, using a properly
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* formed ArcIms GETIMAGE request
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*/
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if (!si.getFeaturecoordsys().equalsIgnoreCase(srs)) {
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try {
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logger.info("Requesting the Extent of the Image");
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URL url = new URL(this.buildCapabilitiesRequest(status)); |
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String request = ArcXMLImage.getCustomExtentRequest(srs, status
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.getEnvelopeRect(), si.getFeaturecoordsys(), ds, null,
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"", si.getLayer(0).getId()); |
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if (status.verbose) {
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System.err.println(request);
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} |
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File response = ArcImsDownloadUtils.doRequestPost(url, request,
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"getInfoImageExtent.xml");
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geoServiceExtent = parseEnvelopeTag(new FileReader(response), |
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ds); |
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} catch (MalformedURLException e) { |
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logger.error(e.getMessage(), e); |
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throw new ArcImsException("arcims_server_error"); |
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} catch (FileNotFoundException e) { |
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logger.error(e.getMessage(), e); |
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throw new ArcImsException("arcims_server_error"); |
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} |
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} else {
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geoServiceExtent = status.getEnvelopeRect(); |
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} |
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/**
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* URL for the requests of info
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*/
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URL requestF;
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URL requestI;
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URL request;
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/**
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* StringBuffer to store the POST info to pass to the server
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*/
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StringBuffer sb = new StringBuffer(); |
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/**
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* Vector of Layers IDs to request
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*/
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Vector<String> idLayers = status.getLayerIds(); |
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/**
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* String with the ArcXML request (GET_FEATURES)
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*/
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String sArcXML = new String(); |
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/**
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* First at all, we build the request for this service
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*/
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try {
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requestF = new URL(buildGetFeatureInfoRequest(status, |
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ServiceInfoTags.vLAYERTYPE_F)); |
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requestI = new URL(buildGetFeatureInfoRequest(status, |
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ServiceInfoTags.vLAYERTYPE_I)); |
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} catch (Exception e) { |
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e.printStackTrace(); |
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return ""; |
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} |
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sb.append("<?xml version=\"1.0\" encoding=\"ISO-8859-1\"?>");
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sb.append("<FeatureInfoResponse>");
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/**
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* We need to obtain the real (geographic) x,y not the pixels of the
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* image, a BoundaryBox of the area we will query, the envelope and
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* scale of the current view
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*
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*/
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ratio = 3;
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iViewX = geoViewExtent.getWidth() / status.getWidth(); |
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iViewY = geoViewExtent.getHeight() / status.getHeight(); |
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iServiceX = geoServiceExtent.getWidth() / status.getWidth(); |
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iServiceY = geoServiceExtent.getHeight() / status.getHeight(); |
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xReal = geoViewExtent.getMinX() + (x * iViewX); |
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yReal = geoViewExtent.getMaxY() - (y * iViewY); |
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if (getServiceInformation().getScreen_dpi() == -1) { |
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getServiceInformation().setScreen_dpi(96);
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} |
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// currentScale = serviceInfo.screen_dpi/INCHES*((iX+iY)/2);
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currentScale = 1.0 * ((iServiceX + iServiceY) / 2.0); |
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/**
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* Now we are ready to run over the layers to request the info for every
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* one
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*/
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Vector<String> ids = status.getLayerIds(); |
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int n = ids.size();
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String fields;
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ServiceInformationLayer sil; |
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ServiceInformationLayer silTemp; |
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/*
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* If ServiceInfo is Assumed we don't pass a valid SRS to avoid
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* projection problems.
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*/
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if (si.isSrsAssumed()) {
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srs = "";
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} |
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logger.info("Searching candidate layers");
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for (int i = 0; i < n; i++) { |
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/**
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* Before we do any request to the server, we will ensure that the
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* layer is viewed in the current envelope and scale
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*/
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/**
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* Retrieve the proper ServiceInformationLayer
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*/
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sil = silTemp = (ServiceInformationLayer) si.getLayers().get(0);
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for (int j = 0; j < si.getLayers().size(); j++) { |
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silTemp = (ServiceInformationLayer) si.getLayers().get(j); |
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if (silTemp.getId().equals(ids.get(i))) {
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sil = silTemp; |
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break;
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} |
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} |
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/**
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* Querying about the scale
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*/
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boolean inScale = false; |
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if (sil.getMinscale() == -1) { |
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if (sil.getMaxscale() == -1) { |
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inScale = true;
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} else {
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inScale = (currentScale < sil.getMaxscale()); |
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} |
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} else {
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if (sil.getMaxscale() == -1) { |
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inScale = (currentScale > sil.getMinscale()); |
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} else {
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inScale = (currentScale > sil.getMinscale()) |
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&& (currentScale < sil.getMaxscale()); |
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} |
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} |
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if (inScale) {
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/**
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* Querying about the envelope, we have to ask if geoExtent has
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* the Envelope of the layer inside it.
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*/
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boolean inEnvelope = false; |
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BoundaryBox mEnv = sil.getEnvelope(); |
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Area mVentana = new Area((java.awt.Shape) geoServiceExtent); |
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Rectangle2D rectCapa = new Rectangle2D.Double(mEnv.getXmin(), |
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mEnv.getYmin(), mEnv.getXmax() - mEnv.getXmin(), mEnv |
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.getYmax() |
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- mEnv.getYmin()); |
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inEnvelope = mVentana.intersects(rectCapa); |
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/**
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* If two conditions are true, we do the request
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*/
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// if (inScale && inEnvelope){
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if (inEnvelope) {
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// System.out.println("Procesando la capa "+ sil.name);
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fields = "";
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/**
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* Get the Info request for a featureclass or raster layer
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*/
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double[] coords = { xReal, yReal }; |
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double[] dists = { ratio * iServiceX, ratio * iServiceY }; |
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sArcXML = ArcXMLImage.getInfoRequest(sil.getType(), |
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idLayers.get(i).toString(), coords, dists, srs, si |
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.getSeparators().getDs()); |
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if (status.verbose) {
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System.err.println(sArcXML);
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} |
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/**
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* File with a layer info response
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*/
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if (sil.getType().equals(ServiceInfoTags.vLAYERTYPE_F)) {
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request = requestF; |
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} else {
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request = requestI; |
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} |
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logger.info("Requesting layer \"" + sil.getName()
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+ "\" information");
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File response = ArcImsDownloadUtils.doRequestPost(request,
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sArcXML, "getElementInfo.xml");
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/**
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* Now we can parse the file to get the FIELDS element
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*/
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fields = parseFieldsInfoResponse(response); |
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if (!fields.equals("")) { |
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// System.out.println("Se han encontrado resultados,
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// procesando atributos");
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sb.append(ArcXML.getLayerHeaderInfoResponse(ids.get(i) |
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.toString(), status.getServiceInfo())); |
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/**
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* FIELDS element
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*/
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sb.append(fields.replaceAll("#", "_")); |
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// sb.append("\t\t"+"<FIELDS #IY_PRE=\"1000\"
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// #SHAPE#=\"[Geometry]\" #ID#=\"11\" />\r\n");
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sb.append(ArcXML.getLayerFooterInfoResponse()); |
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} |
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// else
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// System.out.println("No se han encontrado entidades");
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} // Fin del if de ventana
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else {
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logger.info("Layer \"" + sil.getName()
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+ "\" is not shown at this envelope");
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} |
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} |
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// Fin del if de escala
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else {
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logger.info("Layer \"" + sil.getName()
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+ "\" is not shown at this scale");
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} |
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} |
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// Fin del for
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sb.append("</FeatureInfoResponse>");
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// System.out.println(sb.toString());
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return sb.toString();
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} |
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/**
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* Parse the xml data retrieved from the ArcIms, it will parse the ArcIms
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* Features
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*
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* @see #getElementInfo(ArcImsStatus, int, int, int)
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* @param f
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* The XML file to parse to obtain the FIELDS element
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* @return XML with FIELDS or BAND tags as a response to a getElementInfo
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*/
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private String parseFieldsInfoResponse(File f) { |
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BufferedReader fi;
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String buf;
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StringBuffer fields = new StringBuffer(); |
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String token = null; |
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int l = 0; |
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try {
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fi = new BufferedReader(new FileReader(f)); |
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while ((buf = fi.readLine()) != null) { |
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// System.out.println(buf);
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l++; |
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// System.err.println(l);
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if ((buf.length() > 2) |
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&& (buf.substring(0, 1).compareTo("<") == 0)) { |
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token = buf.substring(1); // ,l.indexOf(GT)); |
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if (token.startsWith("FIELDS")) { |
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fields.append(buf + "");
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} |
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if (token.startsWith("BAND ")) { |
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fields.append(buf + "");
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} |
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} |
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} |
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fi.close(); |
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System.out.println("Request parsed. (" + l + " lines)"); |
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} catch (FileNotFoundException e) { |
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e.printStackTrace(); |
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} catch (IOException ie) { |
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logger.error("ERROR. (" + l + "lines reeded)"); |
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ie.printStackTrace(); |
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} |
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return fields.toString();
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} |
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|
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/**
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* <p>
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* Builds a GetMap request that is sent to the ArcIms the response (image)
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* will be redirect to the ArcIms client
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* </p>
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*
|
| 503 |
* @param status
|
| 504 |
* An @see ArcImsStatus object
|
| 505 |
* @return File The image requested (a map)
|
| 506 |
* @throws ArcImsException
|
| 507 |
* @throws ServerErrorException
|
| 508 |
*/
|
| 509 |
public File getMap(ArcImsStatus status) throws ArcImsException, |
| 510 |
ServerErrorException {
|
| 511 |
File img = null; |
| 512 |
String currentImageUrl = ""; |
| 513 |
|
| 514 |
try {
|
| 515 |
URL url = new URL(buildCapabilitiesRequest(status)); |
| 516 |
|
| 517 |
String request = ArcXMLImage.getMapRequest(status);
|
| 518 |
|
| 519 |
if (status.verbose) {
|
| 520 |
System.err.println(request);
|
| 521 |
} |
| 522 |
|
| 523 |
logger.info("Requesting ArcIMS GetImage XML");
|
| 524 |
|
| 525 |
File response = ArcImsDownloadUtils.doRequestPost(url, request,
|
| 526 |
"getImage.xml");
|
| 527 |
|
| 528 |
try {
|
| 529 |
currentImageUrl = parseGetImageRequest(new FileReader(response)); |
| 530 |
|
| 531 |
// Control if not /output/blahblah has been passed
|
| 532 |
if (!currentImageUrl.startsWith("http://")) { |
| 533 |
String servlet = status.getServerURL();
|
| 534 |
int ind1 = servlet.indexOf("//"); |
| 535 |
int ind = servlet.indexOf("/", ind1 + 2); |
| 536 |
currentImageUrl = servlet.substring(0, ind)
|
| 537 |
+ currentImageUrl; |
| 538 |
} |
| 539 |
} catch (FileNotFoundException e) { |
| 540 |
logger.error(e.getMessage(), e); |
| 541 |
throw new ArcImsException("Fichero remoto no encontrado"); |
| 542 |
} |
| 543 |
|
| 544 |
URL virtualURL = ArcImsDownloadUtils
|
| 545 |
.getVirtualUrlFromStatus(status); |
| 546 |
logger.info("Downloading ArcIMS image");
|
| 547 |
|
| 548 |
String[] urlSplitted = currentImageUrl.split("\\."); |
| 549 |
String extension = urlSplitted[urlSplitted.length - 1]; |
| 550 |
img = ArcImsDownloadUtils.downloadFile(new URL(currentImageUrl), |
| 551 |
virtualURL, "getImage." + extension);
|
| 552 |
|
| 553 |
// img =com.iver.andami.Utilities.downloadFile(new
|
| 554 |
// URL(currentImageUrl),"getImage");
|
| 555 |
if (img.length() == 0) { |
| 556 |
return null; |
| 557 |
} |
| 558 |
|
| 559 |
// response.delete();
|
| 560 |
} catch (MalformedURLException e) { |
| 561 |
logger.error(e.getMessage(), e); |
| 562 |
throw new ArcImsException("arcims_server_timeout"); |
| 563 |
} catch (ConnectException ce) { |
| 564 |
logger.error("Timed out error", ce);
|
| 565 |
throw new ArcImsException("arcims_server_timeout"); |
| 566 |
} catch (FileNotFoundException fe) { |
| 567 |
logger.error("FileNotFound Error", fe);
|
| 568 |
throw new ArcImsException("arcims_server_error"); |
| 569 |
} catch (IOException e) { |
| 570 |
logger.error("IO Error", e);
|
| 571 |
throw new ArcImsException("arcims_server_error"); |
| 572 |
} |
| 573 |
|
| 574 |
return img;
|
| 575 |
} |
| 576 |
|
| 577 |
/**
|
| 578 |
* Method that parses a GET_IMAGE request, sets the url to download the
|
| 579 |
* rendered image.
|
| 580 |
*
|
| 581 |
* @param fr
|
| 582 |
* @return @see org.gvsig.remoteClient.arcims.ArcImsProtImageHandler#getMap(
|
| 583 |
* ArcImsStatus)
|
| 584 |
* @throws ArcImsException
|
| 585 |
* @throws ServerErrorException
|
| 586 |
*/
|
| 587 |
private String parseGetImageRequest(Reader fr) throws ArcImsException, |
| 588 |
ServerErrorException {
|
| 589 |
String imageUrl = ""; |
| 590 |
int tag;
|
| 591 |
KXmlParser kxmlParser = new KXmlParser();
|
| 592 |
String value = null; |
| 593 |
|
| 594 |
try {
|
| 595 |
kxmlParser.setInput(fr); |
| 596 |
kxmlParser.nextTag(); |
| 597 |
|
| 598 |
if (kxmlParser.getEventType() != KXmlParser.END_DOCUMENT) {
|
| 599 |
kxmlParser.require(KXmlParser.START_TAG, null,
|
| 600 |
ServiceInfoTags.tARCXML); |
| 601 |
tag = kxmlParser.nextTag(); |
| 602 |
|
| 603 |
while (tag != KXmlParser.END_DOCUMENT) {
|
| 604 |
switch (tag) {
|
| 605 |
case KXmlParser.START_TAG:
|
| 606 |
|
| 607 |
if (kxmlParser.getName().compareTo(GetImageTags.OUTPUT) == 0) { |
| 608 |
value = kxmlParser.getAttributeValue("",
|
| 609 |
GetImageTags.URL); |
| 610 |
|
| 611 |
if (value != null) { |
| 612 |
imageUrl = value; |
| 613 |
} |
| 614 |
} else if (kxmlParser.getName().compareTo( |
| 615 |
ServiceInfoTags.tERROR) == 0) {
|
| 616 |
throw new ServerErrorException( |
| 617 |
"Error parsing GET_IMAGE:\r\n"
|
| 618 |
+ kxmlParser.nextText()); |
| 619 |
} |
| 620 |
|
| 621 |
break;
|
| 622 |
|
| 623 |
case KXmlParser.END_TAG:
|
| 624 |
break;
|
| 625 |
|
| 626 |
case KXmlParser.TEXT:
|
| 627 |
break;
|
| 628 |
} |
| 629 |
|
| 630 |
tag = kxmlParser.next(); |
| 631 |
} |
| 632 |
|
| 633 |
kxmlParser.require(KXmlParser.END_DOCUMENT, null, null); |
| 634 |
} |
| 635 |
} catch (XmlPullParserException parser_ex) {
|
| 636 |
logger.error(parser_ex.getMessage(), parser_ex); |
| 637 |
throw new ArcImsException("arcims_server_error"); |
| 638 |
} catch (IOException ioe) { |
| 639 |
logger.error(ioe.getMessage(), ioe); |
| 640 |
throw new ArcImsException("arcims_server_error"); |
| 641 |
} |
| 642 |
|
| 643 |
return imageUrl;
|
| 644 |
} |
| 645 |
|
| 646 |
/**
|
| 647 |
* Simple method to test if an ArcIMS server responses with an image of an
|
| 648 |
* specified format
|
| 649 |
*
|
| 650 |
* @param status
|
| 651 |
* @return
|
| 652 |
* @throws ArcImsException
|
| 653 |
*/
|
| 654 |
public boolean testFormat(ArcImsStatus status, String format) |
| 655 |
throws ArcImsException {
|
| 656 |
boolean resp = true; |
| 657 |
URL url;
|
| 658 |
|
| 659 |
try {
|
| 660 |
ServiceInformation si = status.getServiceInfo(); |
| 661 |
url = new URL(this.buildCapabilitiesRequest(status)); |
| 662 |
|
| 663 |
/**
|
| 664 |
* Build the custom request for this extent
|
| 665 |
*/
|
| 666 |
String request = ArcXMLImage.getCustomExtentRequest("", // ServiceInfo |
| 667 |
// SRS
|
| 668 |
null, // envelope |
| 669 |
"", // SRS of the view |
| 670 |
si.getSeparators().getDs(), // Decimal separator
|
| 671 |
null, // Image size |
| 672 |
format, si.getLayer(0).getId() // A valid Layer Id |
| 673 |
); |
| 674 |
|
| 675 |
if (status.verbose) {
|
| 676 |
System.err.println(request);
|
| 677 |
} |
| 678 |
|
| 679 |
logger.info("Querying for a specific format");
|
| 680 |
|
| 681 |
// BufferedReader lector =
|
| 682 |
// ArcImsDownloadUtils.getRemoteReader(url,request);
|
| 683 |
File f = ArcImsDownloadUtils.doRequestPost(url, request,
|
| 684 |
"testFormat.xml");
|
| 685 |
BufferedReader lector = new BufferedReader(new FileReader(f)); |
| 686 |
|
| 687 |
/**
|
| 688 |
* Loop over the reader until it ends or an ERROR is found
|
| 689 |
*/
|
| 690 |
String lin = lector.readLine();
|
| 691 |
|
| 692 |
// The regular expression to match
|
| 693 |
String regex = ".*<" + ServiceInfoTags.tERROR + ".*</" |
| 694 |
+ ServiceInfoTags.tERROR + ">.*";
|
| 695 |
|
| 696 |
do {
|
| 697 |
if (lin.matches(regex)) {
|
| 698 |
return false; |
| 699 |
} |
| 700 |
|
| 701 |
lin = lector.readLine(); |
| 702 |
} while (lin != null); |
| 703 |
} catch (MalformedURLException e) { |
| 704 |
logger.error(e.getMessage(), e); |
| 705 |
throw new ArcImsException("arcims_server_eror"); |
| 706 |
} catch (IOException e) { |
| 707 |
logger.error(e.getMessage(), e); |
| 708 |
throw new ArcImsException("arcims_server_eror"); |
| 709 |
} |
| 710 |
|
| 711 |
return resp;
|
| 712 |
} |
| 713 |
} |