001 //$HeadURL: svn+ssh://mschneider@svn.wald.intevation.org/deegree/base/trunk/resources/eclipse/svn_classfile_header_template.xml $
002 /*---------------- FILE HEADER ------------------------------------------
003 This file is part of deegree.
004 Copyright (C) 2001-2008 by:
005 Department of Geography, University of Bonn
006 http://www.giub.uni-bonn.de/deegree/
007 lat/lon GmbH
008 http://www.lat-lon.de
009
010 This library is free software; you can redistribute it and/or
011 modify it under the terms of the GNU Lesser General Public
012 License as published by the Free Software Foundation; either
013 version 2.1 of the License, or (at your option) any later version.
014 This library is distributed in the hope that it will be useful,
015 but WITHOUT ANY WARRANTY; without even the implied warranty of
016 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
017 Lesser General Public License for more details.
018 You should have received a copy of the GNU Lesser General Public
019 License along with this library; if not, write to the Free Software
020 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
021 Contact:
022
023 Andreas Poth
024 lat/lon GmbH
025 Aennchenstr. 19
026 53177 Bonn
027 Germany
028 E-Mail: poth@lat-lon.de
029
030 Prof. Dr. Klaus Greve
031 Department of Geography
032 University of Bonn
033 Meckenheimer Allee 166
034 53115 Bonn
035 Germany
036 E-Mail: greve@giub.uni-bonn.de
037 ---------------------------------------------------------------------------*/
038
039 package org.deegree.io.datastore.wfs;
040
041 import java.io.File;
042 import java.net.MalformedURLException;
043 import java.net.URL;
044 import java.util.List;
045
046 import org.deegree.framework.xml.XMLParsingException;
047 import org.deegree.framework.xml.XMLTools;
048 import org.deegree.framework.xml.XSLTDocument;
049 import org.deegree.io.datastore.AnnotationDocument;
050 import org.w3c.dom.Element;
051 import org.w3c.dom.Node;
052
053 /**
054 * Handles the annotation parsing for datastores that cascade remote WFS.
055 *
056 * @author <a href="mailto:schneider@lat-lon.de">Markus Schneider </a>
057 * @author last edited by: $Author:$
058 *
059 * @version $Revision:$, $Date:$
060 */
061 public class CascadingWFSAnnotationDocument extends AnnotationDocument {
062
063 private static final long serialVersionUID = -2801053207484913910L;
064
065 @Override
066 public CascadingWFSDatastoreConfiguration parseDatastoreConfiguration()
067 throws XMLParsingException {
068 Element appinfoElement = (Element) XMLTools.getRequiredNode( getRootElement(), "xs:annotation/xs:appinfo",
069 nsContext );
070 List<Node> list = XMLTools.getRequiredNodes( appinfoElement, "deegreewfs:Url", nsContext );
071
072 WFSDescription[] wfs = new WFSDescription[list.size()];
073
074 String tmp = null;
075 try {
076 for ( int i = 0; i < wfs.length; i++ ) {
077 Node node = list.get( i );
078 tmp = XMLTools.getStringValue( node );
079 URL url = new URL( tmp );
080
081 String xPath = "./@inFilter";
082 XSLTDocument inFilter = readFilter( node, xPath );
083
084 xPath = "./@outFilter";
085 XSLTDocument outFilter = readFilter( node, xPath );
086
087 xPath = "./@timeout";
088 int timeout = XMLTools.getNodeAsInt( node , xPath, nsContext, 5000 );
089
090 wfs[i] = new WFSDescription( url, inFilter, outFilter, timeout );
091 }
092 } catch ( MalformedURLException e ) {
093 throw new XMLParsingException( tmp + " is not a valid URL.", e );
094 }
095 return new CascadingWFSDatastoreConfiguration( wfs );
096 }
097
098 /**
099 * reads and parses optional filter attributes for a WFS
100 *
101 * @param node
102 * @param xPath
103 * @return XSLT script if a filter as been defined otherwise <code>null</code>
104 * will be returned
105 * @throws XMLParsingException
106 */
107 private XSLTDocument readFilter( Node node, String xPath )
108 throws XMLParsingException {
109
110 XSLTDocument filter = null;
111 String tmp = XMLTools.getNodeAsString( node , xPath, nsContext, null );
112 try {
113 if ( tmp != null ) {
114 File file = new File( tmp );
115 URL u = null;
116 if ( !file.isAbsolute() ) {
117 u = this.resolve( tmp );
118 }
119 filter = new XSLTDocument(u);
120 }
121 } catch ( Exception e ) {
122 throw new XMLParsingException( e.getMessage(), e );
123 }
124 return filter;
125 }
126 }