001 //$HeadURL: svn+ssh://mschneider@svn.wald.intevation.org/deegree/base/trunk/resources/eclipse/svn_classfile_header_template.xml $
002 /*----------------------------------------------------------------------------
003 This file is part of deegree, http://deegree.org/
004 Copyright (C) 2001-2009 by:
005 Department of Geography, University of Bonn
006 and
007 lat/lon GmbH
008
009 This library is free software; you can redistribute it and/or modify it under
010 the terms of the GNU Lesser General Public License as published by the Free
011 Software Foundation; either version 2.1 of the License, or (at your option)
012 any later version.
013 This library is distributed in the hope that it will be useful, but WITHOUT
014 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
015 FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
016 details.
017 You should have received a copy of the GNU Lesser General Public License
018 along with this library; if not, write to the Free Software Foundation, Inc.,
019 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
020
021 Contact information:
022
023 lat/lon GmbH
024 Aennchenstr. 19, 53177 Bonn
025 Germany
026 http://lat-lon.de/
027
028 Department of Geography, University of Bonn
029 Prof. Dr. Klaus Greve
030 Postfach 1147, 53001 Bonn
031 Germany
032 http://www.geographie.uni-bonn.de/deegree/
033
034 e-mail: info@deegree.org
035 ----------------------------------------------------------------------------*/
036
037 package org.deegree.io.datastore.wfs;
038
039 import java.io.File;
040 import java.net.MalformedURLException;
041 import java.net.URL;
042 import java.util.List;
043
044 import org.deegree.framework.xml.XMLParsingException;
045 import org.deegree.framework.xml.XMLTools;
046 import org.deegree.framework.xml.XSLTDocument;
047 import org.deegree.io.datastore.AnnotationDocument;
048 import org.w3c.dom.Element;
049 import org.w3c.dom.Node;
050
051 /**
052 * Handles the annotation parsing for datastores that cascade remote WFS.
053 *
054 * @author <a href="mailto:schneider@lat-lon.de">Markus Schneider </a>
055 * @author last edited by: $Author:$
056 *
057 * @version $Revision:$, $Date:$
058 */
059 public class CascadingWFSAnnotationDocument extends AnnotationDocument {
060
061 private static final long serialVersionUID = -2801053207484913910L;
062
063 @Override
064 public CascadingWFSDatastoreConfiguration parseDatastoreConfiguration()
065 throws XMLParsingException {
066 Element appinfoElement = (Element) XMLTools.getRequiredNode( getRootElement(), "xs:annotation/xs:appinfo",
067 nsContext );
068 List<Node> list = XMLTools.getRequiredNodes( appinfoElement, "deegreewfs:Url", nsContext );
069
070 WFSDescription[] wfs = new WFSDescription[list.size()];
071
072 String tmp = null;
073 try {
074 for ( int i = 0; i < wfs.length; i++ ) {
075 Node node = list.get( i );
076 tmp = XMLTools.getStringValue( node );
077 URL url = new URL( tmp );
078
079 String xPath = "./@inFilter";
080 XSLTDocument inFilter = readFilter( node, xPath );
081
082 xPath = "./@outFilter";
083 XSLTDocument outFilter = readFilter( node, xPath );
084
085 xPath = "./@timeout";
086 int timeout = XMLTools.getNodeAsInt( node , xPath, nsContext, 5000 );
087
088 wfs[i] = new WFSDescription( url, inFilter, outFilter, timeout );
089 }
090 } catch ( MalformedURLException e ) {
091 throw new XMLParsingException( tmp + " is not a valid URL.", e );
092 }
093 return new CascadingWFSDatastoreConfiguration( wfs );
094 }
095
096 /**
097 * reads and parses optional filter attributes for a WFS
098 *
099 * @param node
100 * @param xPath
101 * @return XSLT script if a filter as been defined otherwise <code>null</code>
102 * will be returned
103 * @throws XMLParsingException
104 */
105 private XSLTDocument readFilter( Node node, String xPath )
106 throws XMLParsingException {
107
108 XSLTDocument filter = null;
109 String tmp = XMLTools.getNodeAsString( node , xPath, nsContext, null );
110 try {
111 if ( tmp != null ) {
112 File file = new File( tmp );
113 URL u = null;
114 if ( !file.isAbsolute() ) {
115 u = this.resolve( tmp );
116 }
117 filter = new XSLTDocument(u);
118 }
119 } catch ( Exception e ) {
120 throw new XMLParsingException( e.getMessage(), e );
121 }
122 return filter;
123 }
124 }