Mercurial > dive4elements > river

comparison flys-artifacts/src/main/java/de/intevation/flys/exports/MapGenerator.java @ 1774:092e1e5020bc

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Added a new MapGenerator which only returns a map configuration document at the moment (work still in progress). flys-artifacts/trunk@3095 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Fri, 28 Oct 2011 05:54:25 +0000
parents
children 0156105222c9
comparison
equal deleted inserted replaced
1773:9be01e2e6897 1774:092e1e5020bc
1 package de.intevation.flys.exports;
2
3 import java.io.IOException;
4 import java.io.OutputStream;
5 import java.util.ArrayList;
6 import java.util.List;
7
8 import org.w3c.dom.Document;
9 import org.w3c.dom.Element;
10
11 import org.apache.log4j.Logger;
12
13 import com.vividsolutions.jts.geom.Envelope;
14
15 import de.intevation.artifacts.Artifact;
16 import de.intevation.artifacts.CallContext;
17
18 import de.intevation.artifacts.common.ArtifactNamespaceContext;
19 import de.intevation.artifacts.common.utils.XMLUtils;
20 import de.intevation.artifacts.common.utils.XMLUtils.ElementCreator;
21
22 import de.intevation.artifactdatabase.state.Facet;
23
24 import de.intevation.flys.artifacts.FLYSArtifact;
25 import de.intevation.flys.artifacts.model.FacetTypes;
26 import de.intevation.flys.artifacts.model.WMSLayerFacet;
27 import de.intevation.flys.utils.GeometryUtils;
28
29
30 public class MapGenerator implements OutGenerator, FacetTypes {
31
32 private static Logger logger = Logger.getLogger(MapGenerator.class);
33
34
35 protected Artifact master;
36
37 protected Document request;
38
39 protected OutputStream out;
40
41 protected CallContext context;
42
43 protected List<WMSLayerFacet> layers;
44
45 protected Envelope maxExtent;
46 protected Envelope initialExtent;
47
48 protected String srid;
49
50
51
52 @Override
53 public void init(Document request, OutputStream out, CallContext context) {
54 logger.debug("MapGenerator.init");
55
56 this.request = request;
57 this.out = out;
58 this.context = context;
59
60 this.layers = new ArrayList<WMSLayerFacet>();
61
62 this.maxExtent = null;
63 this.initialExtent = null;
64 }
65
66
67 @Override
68 public void setMasterArtifact(Artifact master) {
69 logger.debug("MapGenerator.setMasterArtifact");
70 this.master = master;
71 }
72
73
74 @Override
75 public void doOut(
76 Artifact artifact,
77 Facet facet,
78 Document attr,
79 boolean visible)
80 {
81 String name = facet.getName();
82
83 logger.debug("MapGenerator.doOut: " +artifact.identifier()+" | "+name);
84 FLYSArtifact flys = (FLYSArtifact) artifact;
85
86 Facet nativeFacet = flys.getNativeFacet(facet);
87
88 if (nativeFacet instanceof WMSLayerFacet) {
89 WMSLayerFacet wms = (WMSLayerFacet) nativeFacet;
90 Envelope extent = wms.getExtent();
91
92 layers.add(wms);
93
94 setMaxExtent(extent);
95 setSrid(wms.getSrid());
96
97 if (FLOODMAP_WSPLGEN.equals(name) && initialExtent == null) {
98 setInitialExtent(extent);
99 }
100 }
101 else {
102 logger.warn("Facet not supported: " + nativeFacet.getClass());
103 }
104
105 }
106
107
108 @Override
109 public void generate()
110 throws IOException
111 {
112 logger.debug("MapGenerator.generate");
113
114 Document response = XMLUtils.newDocument();
115 ElementCreator c = new ElementCreator(
116 response,
117 ArtifactNamespaceContext.NAMESPACE_URI,
118 ArtifactNamespaceContext.NAMESPACE_PREFIX);
119
120 Element root = c.create("floodmap");
121 Element layers = c.create("layers");
122
123 response.appendChild(root);
124 root.appendChild(layers);
125
126 appendLayers(layers);
127 appendMapInformation(root, c);
128
129 XMLUtils.toStream(response, out);
130 }
131
132
133 protected void appendLayers(Element parent) {
134 for (WMSLayerFacet facet: layers) {
135 parent.appendChild(facet.toXML(parent.getOwnerDocument()));
136 }
137 }
138
139
140 protected void setMaxExtent(Envelope maxExtent) {
141 if (maxExtent == null) {
142 return;
143 }
144
145 if (this.maxExtent == null) {
146 logger.debug("Set max extent to: " + maxExtent);
147 this.maxExtent = maxExtent;
148 return;
149 }
150
151 logger.debug("Expand max extent by: " + maxExtent);
152 logger.debug("Max extent before expanding: " + this.maxExtent);
153 this.maxExtent.expandToInclude(maxExtent);
154 logger.debug("Max extent after expanding: " + this.maxExtent);
155 }
156
157
158 protected void setInitialExtent(Envelope initialExtent) {
159 if (initialExtent == null) {
160 return;
161 }
162
163 if (this.initialExtent == null) {
164 logger.debug("Set initial extent to: " + initialExtent);
165 this.initialExtent = initialExtent;
166 return;
167 }
168
169 logger.debug("Set initial extent to: " + initialExtent);
170 this.initialExtent = initialExtent;
171 }
172
173
174 protected void setSrid(String srid) {
175 if (srid == null || srid.length() == 0) {
176 return;
177 }
178
179 this.srid = srid;
180 }
181
182
183 protected void appendMapInformation(Element parent, ElementCreator c) {
184 String mE = GeometryUtils.jtsBoundsToOLBounds(this.maxExtent);
185 logger.debug("BUILD MAX EXTENT OF:" + this.maxExtent);
186 logger.debug("BUILD MAX EXTENT:" + mE);
187
188 Element maxExtent = c.create("maxExtent");
189 maxExtent.setTextContent(mE);
190
191 String iE = GeometryUtils.jtsBoundsToOLBounds(this.initialExtent);
192 logger.debug("BUILD INITIAL EXTENT OF: " + this.initialExtent);
193 logger.debug("BUILD INITIAL EXTENT: " + iE);
194 Element initExtent = c.create("initialExtent");
195 initExtent.setTextContent(iE);
196
197 Element srid = c.create("srid");
198 srid.setTextContent(this.srid);
199
200 // TODO zoom levels
201 // TODO resolutation
202
203 parent.appendChild(maxExtent);
204 parent.appendChild(initExtent);
205 parent.appendChild(srid);
206 }
207 }
208 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org