tim@52: /**
tim@52:  *
tim@52:  */
tim@52: package de.intevation.gnv.artifacts.context;
tim@52: 
tim@52: import java.io.FileInputStream;
tim@52: import java.io.FileNotFoundException;
tim@52: import java.io.IOException;
tim@52: import java.io.InputStream;
ingo@369: import java.io.File;
ingo@369: 
tim@52: import java.util.Properties;
sascha@426: import java.util.HashMap;
tim@52: 
tim@52: import org.apache.log4j.Logger;
sascha@426: 
tim@52: import org.w3c.dom.Document;
sascha@426: import org.w3c.dom.Element;
sascha@426: import org.w3c.dom.NodeList;
sascha@426: import org.w3c.dom.Node;
sascha@426: 
sascha@426: import de.intevation.gnv.geobackend.base.connectionpool.ConnectionPoolFactory;
sascha@426: 
sascha@426: import de.intevation.gnv.geobackend.base.query.container.QueryContainerFactory;
sascha@426: import de.intevation.gnv.geobackend.base.query.container.exception.QueryContainerException;
sascha@426: 
sascha@426: import de.intevation.gnv.chart.XMLChartTheme;
sascha@426: 
sascha@426: import de.intevation.gnv.artifacts.cache.CacheFactory;
sascha@426: 
sascha@426: import de.intevation.gnv.raster.Palette;
sascha@426: 
sascha@426: import de.intevation.artifacts.ArtifactContextFactory;
tim@52: 
tim@52: import de.intevation.artifactdatabase.Config;
ingo@369: import de.intevation.artifactdatabase.XMLUtils;
tim@52: 
tim@52: /**
tim@52:  * @author Tim Englich <tim.englich@intevation.de>
tim@171:  * 
tim@52:  */
tim@52: public class GNVArtifactContextFactory implements ArtifactContextFactory {
tim@52:     /**
tim@52:      * the logger, used to log exceptions and additonaly information
tim@52:      */
tim@52:     private static Logger log = Logger.getLogger(GNVArtifactContext.class);
tim@171: 
sascha@426:     public static final String XPATH_GEOBACKEND_CONFIGURATION = 
sascha@426:         "artifact-database/geo-backend/backend-configuration";
tim@171: 
sascha@426:     public static final String XPATH_GEOBACKEND_QUERYCONFIGURATION = 
sascha@426:         "artifact-database/geo-backend/query-configuration";
tim@171: 
sascha@426:     private final static String CACHECONFIGNODEPATH = 
sascha@426:         "/artifact-database/ehcache/configuration";
tim@171: 
sascha@426:     private final static String CHARTCONFIGNODEPATH = 
sascha@426:         "/artifact-database/charttemplate/configuration";
sascha@426: 
sascha@426:     public final static String PALETTES_PATH =
sascha@426:         "/artifact-database/palettes";
sascha@426: 
sascha@426:     public final static String PALETTE_ITEMS =
sascha@426:         "palette";
sascha@426: 
sascha@426:     public final static String PALETTES =
sascha@426:         "color.palettes";
ingo@358: 
ingo@358:     public final static String CHARTTEMPLATE = "template";
ingo@358: 
tim@52:     /**
tim@52:      * Constructor
tim@52:      */
tim@52:     public GNVArtifactContextFactory() {
tim@52:         super();
tim@52:         log.debug("GNVArtifactContextFactory.Constructor");
tim@52:     }
tim@52: 
tim@52:     /**
tim@52:      * @see de.intevation.artifacts.ArtifactContextFactory#createArtifactContext(org.w3c.dom.Document)
tim@52:      */
tim@52:     public Object createArtifactContext(Document config) {
ingo@358:         GNVArtifactContext returnValue = null;
tim@52:         try {
tim@52:             log.debug("GNVArtifactContextFactory.createArtifactContext");
tim@52:             log.info("Initialisation of the Geo-BackendConnectionPool");
tim@171:             String backendConfigurationFile = Config.getStringXPath(config,
tim@171:                     XPATH_GEOBACKEND_CONFIGURATION);
sascha@426:             backendConfigurationFile = Config.replaceConfigDir(
sascha@426:                 backendConfigurationFile);
tim@203:             
tim@52:             Properties properties = getProperties(backendConfigurationFile);
tim@52:             ConnectionPoolFactory cpf = ConnectionPoolFactory.getInstance();
tim@52:             cpf.initializeConnectionPool(properties);
tim@171: 
tim@52:             log.info("Initialisation of the QueryContainer");
tim@171:             String queryConfigurationFile = Config.getStringXPath(config,
tim@171:                     XPATH_GEOBACKEND_QUERYCONFIGURATION);
sascha@426:             queryConfigurationFile = Config.replaceConfigDir(
sascha@426:                 queryConfigurationFile);
tim@203:             
tim@52:             Properties queryProperties = getProperties(queryConfigurationFile);
tim@52:             QueryContainerFactory qcf = QueryContainerFactory.getInstance();
tim@52:             qcf.initializeQueryContainer(queryProperties);
tim@171: 
tim@99:             log.info("Initialisation of the Cache");
tim@171:             String cacheConfigurationFile = Config.getStringXPath(config,
tim@171:                     CACHECONFIGNODEPATH);
sascha@426:             cacheConfigurationFile = Config.replaceConfigDir(
sascha@426:                 cacheConfigurationFile);
sascha@426: 
tim@99:             CacheFactory cf = CacheFactory.getInstance();
tim@99:             cf.initializeCache(cacheConfigurationFile);
tim@171: 
tim@52:             returnValue = new GNVArtifactContext(config);
ingo@358: 
sascha@426:             configurePalettes(config, returnValue);
sascha@426: 
sascha@426:             configureChartTemplate(config, returnValue);
sascha@426: 
sascha@426: 
tim@52:         } catch (FileNotFoundException e) {
tim@171:             log.error(e, e);
tim@52:         } catch (IOException e) {
tim@171:             log.error(e, e);
tim@171:         } catch (QueryContainerException e) {
tim@171:             log.error(e, e);
tim@52:         }
tim@52:         return returnValue;
tim@52:     }
tim@52: 
sascha@426:     protected void configureChartTemplate(
sascha@426:         Document           config,
sascha@426:         GNVArtifactContext context
sascha@426:     ) {
sascha@426:         log.info("Initialisation of chart template");
sascha@426:         String chartConfigFile = Config.getStringXPath(
sascha@426:             config, CHARTCONFIGNODEPATH
sascha@426:         );
sascha@426:         chartConfigFile = Config.replaceConfigDir(chartConfigFile);
sascha@426:         log.debug("Parse xml configuration of " + chartConfigFile);
sascha@426: 
sascha@426:         Document tmpl = XMLUtils.parseDocument(new File(chartConfigFile));
sascha@426:         XMLChartTheme theme = new XMLChartTheme("XMLChartTheme");
sascha@426:         if (tmpl != null) {
sascha@426:             theme.applyXMLConfiguration(tmpl);
sascha@426:         }
sascha@426:         else {
sascha@426:             log.error(
sascha@426:                 "Cannot load chart template from '" +
sascha@426:                 chartConfigFile + "'");
sascha@426:         }
sascha@426: 
sascha@426:         context.put(CHARTTEMPLATE, theme);
sascha@426:     }
sascha@426: 
sascha@426:     protected void configurePalettes(
sascha@426:         Document           config,
sascha@426:         GNVArtifactContext context
sascha@426:     ) {
sascha@426:         log.info("configure palettes");
sascha@426: 
sascha@426:         HashMap palettes = new HashMap();
sascha@426: 
sascha@426:         Node node = Config.getNodeXPath(config, PALETTES_PATH);
sascha@426: 
sascha@426:         if (node == null) {
sascha@426:             log.error("No palettes found");
sascha@426:         }
sascha@426:         else {
sascha@426:             NodeList pals = Config.getNodeSetXPath(PALETTE_ITEMS);
sascha@426:             for (int i = 0, N = pals == null ? 0 : pals.getLength(); i < N; ++i) {
sascha@426:                 Element pal = (Element)pals.item(i);
sascha@426:                 String name        = pal.getAttribute("name");
sascha@426:                 String description = pal.getAttribute("description");
sascha@426:                 String filename    = pal.getAttribute("file");
sascha@426: 
sascha@426:                 if (name == null || name.length() == 0) {
sascha@426:                     log.error("Palette has no 'name' attribute.");
sascha@426:                 }
sascha@426:                 else if (filename == null || filename.length() == 0) {
sascha@426:                     log.error("Palette has no 'file' attribute.");
sascha@426:                 }
sascha@426:                 else {
sascha@426:                     filename = Config.replaceConfigDir(filename);
sascha@426:                     Document document = XMLUtils.parseDocument(
sascha@426:                         new File(filename));
sascha@426:                     if (document == null) {
sascha@426:                         log.error("Cannot load palette file '" +
sascha@426:                             filename + "'");
sascha@426:                     }
sascha@426:                     else {
sascha@426:                         Palette p = new Palette(document, description);
sascha@426:                         palettes.put(name, p);
sascha@426:                     }
sascha@426:                 }
sascha@426:             }
sascha@426:         }
sascha@426: 
sascha@426:         context.put(PALETTES, palettes);
sascha@426:     }
sascha@426: 
tim@52:     /**
tim@52:      * @param filePath
tim@52:      * @return
tim@52:      * @throws FileNotFoundException
tim@52:      * @throws IOException
tim@52:      */
tim@52:     private Properties getProperties(String filePath)
sascha@426:     throws FileNotFoundException, IOException
sascha@426:     {
sascha@172:         InputStream inputStream = null;
sascha@172:         try {
sascha@172:             inputStream = new FileInputStream(filePath);
sascha@172:             Properties properties = new Properties();
sascha@172:             properties.load(inputStream);
sascha@172:             return properties;
sascha@172:         }
sascha@172:         finally {
sascha@172:             if (inputStream != null) {
sascha@172:                 try { inputStream.close(); }
sascha@172:                 catch (IOException ioe) {}
sascha@172:             }
sascha@172:         }
tim@52:     }
tim@52: }