Application: gvSIG desktop

/* gvSIG. Sistema de Información Geográfica de la Generalitat Valenciana

 *

 * Copyright (C) 2004-2006 IVER T.I. and Generalitat Valenciana.

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version 2

 * of the License, or (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,USA.

 *

 * For more information, contact:

 *

 *   Generalitat Valenciana

 *   Conselleria d'Infraestructures i Transport

 *   Av. Blasco Ibañez, 50

 *   46010 VALENCIA

 *   SPAIN

 *

 *   +34 963862235

 *   gvsig@gva.es

 *   www.gvsig.gva.es

 *

 *    or

 *

 *   IVER T.I. S.A

 *   Salamanca 50

 *   46005 Valencia

 *   Spain

 *

 *   +34 963163400

 *   dac@iver.es

 */

package org.gvsig.publish.geoserver.model;

import java.net.MalformedURLException;

import java.net.URI;

import java.net.URISyntaxException;

import java.net.URL;

import org.gvsig.publish.PublishLogger;

import org.gvsig.publish.exceptions.PublishException;

import org.gvsig.publish.geoserver.conf.GSDatastore;

import org.gvsig.publish.geoserver.conf.GSFeature;

import org.gvsig.publish.geoserver.conf.GSNamespace;

import org.gvsig.publish.geoserver.conf.GSStyle;

import org.gvsig.publish.infoproject.IDataSourceInfo;

import org.gvsig.publish.infoproject.ILayerInfo;

import org.gvsig.publish.infoproject.datasources.IDataBaseInfo;

import org.gvsig.publish.infoproject.datasources.IFileInfo;

import org.gvsig.publish.ogcmetadata.IOGCCommonMetadata;

import org.gvsig.publish.ogcmetadata.OGCCommonMetadata;

import org.gvsig.publish.serversmodel.RemoteResource;

import com.iver.utiles.XMLEntity;

/**

 * This class represents a remote resource (a feature) which can be offered by Geoserver

 * This remote resource will be able to be accessed through WMS or WFS. 

 * It has the responsibility of persisting the configuration.

 * 

 * @author jvhigon

 *

 */

public class GeoserverFeature extends RemoteResource implements IOGCCommonMetadata {

        //Attributes

        private OGCCommonMetadata ogcMetadata= null;

        private String namespacePrefix =null;

        public static final String REGISTER_TAG="geoserver_feature";

        private boolean cacheEnabled=true;

        private int cacheMaxage=3600;

        private int numDecimals=0;

        /**

         * constructor

         * @param service

         */

        public GeoserverFeature(GeoserverWFSService service) {

                super(service);                

                ogcMetadata = new OGCCommonMetadata();

        }

        /** 

         * Overrides the method in order to initialize some variables like namespacePrefix.

         * Also overrides the method in order to avoid the creation of nested resources 

         * @see org.gvsig.publish.serversmodel.RemoteResource#setLayerInfo(org.gvsig.publish.infoproject.ILayerInfo)

         */

        public void setLayerInfo(ILayerInfo ilayer) {

                super.setLayerInfo(ilayer);

                setNamespacePrefix(getLayerInfo().getDataSource().getNamespacePrefix());

                setName(getFeatureTypeName());

                setTitle(getLayerInfo().getTitle());

                setAbstract("generated by gvSIG");

        }

        /**

         * 

         * @return feature name in Geoserver. It's the filename without extension for files or tablename for databases

         * 

         */

        private String getFeatureTypeName() {

                String aux="unknowfeature";

                IDataSourceInfo ds = getLayerInfo().getDataSource();

                if (ds instanceof IFileInfo){

                        IFileInfo ifile = (IFileInfo)ds;

                        aux = ifile.getFilenameWithoutExtension();

                }else{

                        if (ds instanceof IDataBaseInfo){

                                IDataBaseInfo idb = (IDataBaseInfo) ds;

                                aux = idb.getTableName();

                        }

                }

                return aux;

        }

        /*

         * (non-Javadoc)

         * @see com.iver.utiles.IPersistance#getClassName()

         */

        public String getClassName() {                

                return "GeoserverFeature";

        }

        /**

         * 

         * @see org.gvsig.publish.serversmodel.RemoteResource#publish()

         */

        public void publish() throws PublishException{                

                //adds this feature to the server configuration                

                addFeatureToConfig(); 

                //adds its childs to the server configuration

                super.publish();

        }

        /**

         * Adds this remote resource into the server configuration

         * @throws PublishException  

         */

        private void addFeatureToConfig() throws PublishException{

                GSFeature config = new GSFeature(this);

                //create namespace

                GSNamespace ns = create_namespace();

                //create datastore

                GSDatastore ds = create_datastore(config, ns);

                //create style 

                GSStyle st = create_style();

                //create feature

                config.setDatastore(ds);

                config.setNamespace(ns);

                config.setStyle(st);

                //adds feature

                Geoserver server= (Geoserver) getService().getServer();

                boolean isadded = server.getConfiguration().addFeatureType(config);

                if (isadded == false && getLayerInfo().getDataSource().getType()==IDataSourceInfo.SHAPE_TYPE){

                        PublishLogger.getLog().error("ERROR GeoserverFeature: cannot add a feature because you can't have two features with the same shapefile in the same namespace");

                        this.remove();

                        throw new PublishException("cannot_publish_two_remoteresources_with_same_shape");

                }                        

        }

        /**

         * TODO: at the moment only one namespace is possible (default)

         * @return

         */

        private GSNamespace create_namespace(){

                GSNamespace ns = new GSNamespace();                

                ns.setPrefix(getNamespacePrefix());

                try {

                        ns.setURI(new URI(getService().getServer().getServerURL().toString()));

                } catch (URISyntaxException e1) {                        

                        PublishLogger.getLog().error("ERROR " + getClassName() + ":uri syntax error", e1);

                }

                return ns;

        }

        /**

         * 

         * @param ns

         * @return

         */

        private GSDatastore create_datastore(GSFeature feature, GSNamespace ns) {

                GSDatastore ds = new GSDatastore();

                ds.setNamespace(ns);

                IDataSourceInfo dataSrc = getLayerInfo().getDataSource();                

                if (dataSrc.getType().equals(IDataSourceInfo.SHAPE_TYPE)){                        

                        config_datastore_shape(feature, ds);

                }

                if (dataSrc.getType().equals(IDataSourceInfo.POSTGIS_TYPE)){                        

                        config_datastore_postgis(feature, ds);

                }

                return ds;

        }

        /**

         * Creates the datastore configuration for Geoserver

         * 

         * @param feature

         * @param ds

         */

        private void config_datastore_postgis(GSFeature feature, GSDatastore ds) {

                String ds_id  = ((IDataBaseInfo)getLayerInfo().getDataSource()).getConnectionName();

                ds_id  = ds_id + "_" + ((IDataBaseInfo)getLayerInfo().getDataSource()).getSchemaName();

                ds.setId(ds_id);

                ds.setAbstract("Datastore description generated by gvSIG");

                ds.setLooseBbox(true);

                ds.setUser(((IDataBaseInfo)getLayerInfo().getDataSource()).getUser());

                ds.setPassword(((IDataBaseInfo)getLayerInfo().getDataSource()).getPassword());

                ds.setEstimatedExtent(false);

                ds.setHost(((IDataBaseInfo)getLayerInfo().getDataSource()).getHost());

                ds.setSchema(((IDataBaseInfo)getLayerInfo().getDataSource()).getSchemaName());

                ds.setPort(new Integer(((IDataBaseInfo)getLayerInfo().getDataSource()).getPort()).intValue());

                ds.setDatabase(((IDataBaseInfo)getLayerInfo().getDataSource()).getDatabaseName());

                ds.setDbType("postgis");                

                //the feature id is namespace prefix + "_" + tablename

                String id = getLayerInfo().getDataSource().getNamespacePrefix() + "_" + ((IDataBaseInfo)getLayerInfo().getDataSource()).getTableName();

                feature.setId(id);

        }

        /**

         * Creates the datastore configuration for Geoserver

         * @param feature

         * @param ds

         * 

         */

        private void config_datastore_shape(GSFeature feature, GSDatastore ds) {

                ds.setId(((IFileInfo)getLayerInfo().getDataSource()).getFilenameWithoutExtension());

                //TODO: get this from IDatasourceInfo

                ds.setCharset("UTF-8");                

                try {

                        IDataSourceInfo datasource = getLayerInfo().getDataSource();

                        String f = getService().getServer().getPublication().getServerSideFilePath(datasource);

                        ds.setURL(new URL("file:" + f));

                } catch (MalformedURLException e) {

                        PublishLogger.getLog().error("ERROR: " + getClassName() + ":malformed url", e);

                }        

                //the feature id is namespace + "_" + filename without extension

                String id = getLayerInfo().getDataSource().getNamespacePrefix() + "_" + getId(); 

                feature.setId(id);

        }

        /**

         * Creates the style configuration for Geoserver 

         * 

         * @return

         * 

         */

        private GSStyle create_style(){

                //create style

                GSStyle st = new GSStyle();

                st.setId(getId());

                if (getLayerInfo().getLegend()!= null){

                        st.setSLDString(getLayerInfo().getLegend().getSLDString());

                }

                return st;

        }

        /*

         * (non-Javadoc)

         * @see org.gvsig.publish.serversmodel.RemoteResource#getRegisterTag()

         */

        public String getRegisterTag() {

                return REGISTER_TAG;

        }

        /*

         * (non-Javadoc)

         * @see org.gvsig.publish.ogcmetadata.IOGCCommonMetadata#getAbstract()

         */

        public String getAbstract() {

                return ogcMetadata.getAbstract();

        }

        /*

         * (non-Javadoc)

         * @see org.gvsig.publish.ogcmetadata.IOGCCommonMetadata#getName()

         */

        public String getName() {

                return ogcMetadata.getName();

        }

        /*

         * (non-Javadoc)

         * @see org.gvsig.publish.ogcmetadata.IOGCCommonMetadata#getTitle()

         */

        public String getTitle() {

                return ogcMetadata.getTitle();

        }

        /*

         * (non-Javadoc)

         * @see org.gvsig.publish.ogcmetadata.IOGCCommonMetadata#setAbstract(java.lang.String)

         */

        public void setAbstract(String description) {

                ogcMetadata.setAbstract(description);                

        }

        /*

         * (non-Javadoc)

         * @see org.gvsig.publish.ogcmetadata.IOGCCommonMetadata#setName(java.lang.String)

         */

        public void setName(String name) {

                ogcMetadata.setName(name);

        }

        /*

         * (non-Javadoc)

         * @see org.gvsig.publish.ogcmetadata.IOGCCommonMetadata#setTitle(java.lang.String)

         */

        public void setTitle(String title) {

                ogcMetadata.setTitle(title);                

        }

        /*

         * (non-Javadoc)

         * @see org.gvsig.publish.IPublishPersistence#getVersion()

         */

        public int getVersion() {                

                return 1;

        }

        /*

         * (non-Javadoc)

         * @see java.lang.Object#toString()

         */

        public String toString(){

                return getTitle();

        }

        /* (non-Javadoc)

         * @see org.gvsig.publish.serversmodel.RemoteResource#getXMLEntity()

         */

        public XMLEntity getXMLEntity() {

                XMLEntity xml=super.getXMLEntity();

                //put version and name

                xml.setName(getClassName());

                xml.putProperty("version", getVersion());

                //put associations

                XMLEntity child = new XMLEntity();

                child.setName("ogcmetadata");

                child.addChild(ogcMetadata.getXMLEntity());

                xml.addChild(child);

                //put config properties

                xml.putProperty("namespace_prefix", getNamespacePrefix());

                xml.putProperty("is_cached", isCacheEnabled());

                xml.putProperty("cache_maxage", getCacheMaxage());

                return xml;

        }

        /* (non-Javadoc)

         * @see org.gvsig.publish.serversmodel.RemoteResource#setXMLEntity(com.iver.utiles.XMLEntity)

         */

        public void setXMLEntity(XMLEntity xml) {

                //check version

                int version = xml.getIntProperty("version");

                if (version != getVersion()){

                        PublishLogger.getLog().error("ERROR: " + getClassName() + ": the version doesn't match!");                        

                        return;

                }

                super.setXMLEntity(xml);                                                

                //set associations

                XMLEntity child = xml.firstChild("name","ogcmetadata");

                ogcMetadata.setXMLEntity(child.getChild(0));

                //set config properties

                setNamespacePrefix(xml.getStringProperty("namespace_prefix"));

                setCacheEnabled(xml.getBooleanProperty("is_cached"));

                setCacheMaxage(xml.getIntProperty("cache_maxage"));

        }

        /**

         * @return the cacheEnabled

         */

        public boolean isCacheEnabled() {

                return cacheEnabled;

        }

        /**

         * @param cacheEnabled the cacheEnabled to set

         */

        public void setCacheEnabled(boolean cacheEnabled) {

                this.cacheEnabled = cacheEnabled;

        }

        /**

         * @return the cacheMaxage

         */

        public int getCacheMaxage() {

                return cacheMaxage;

        }

        /**

         * @param cacheMaxage the cacheMaxage to set

         */

        public void setCacheMaxage(int cacheMaxage) {

                this.cacheMaxage = cacheMaxage;

        }

        /**

         * @return the numDecimals

         */

        public int getNumDecimals() {

                return numDecimals;

        }

        /**

         * @param numDecimals the numDecimals to set

         */

        public void setNumDecimals(int numDecimals) {

                this.numDecimals = numDecimals;

        }

        /**

         * @return the namespacePrefix

         */

        public String getNamespacePrefix() {

                return namespacePrefix;

        }

        /**

         * @param namespacePrefix the namespacePrefix to set

         */

        public void setNamespacePrefix(String namespacePrefix) {

                this.namespacePrefix = namespacePrefix;

        }

}