Mercurial > dive4elements > river

annotate artifacts/src/main/java/org/dive4elements/river/artifacts/services/AbstractChartService.java @ 9801:1d7a72a50183 3.2.x tip

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Assume Compose V2, consistently
author Tom Gottfried <tom@intevation.de>
date Thu, 23 Nov 2023 10:14:13 +0100
parents 0a5239a1e46e
children
rev   line source
5863
4897a58c8746 River artifacts: Added new copyright headers.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 5838
diff changeset
1 /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde
4897a58c8746 River artifacts: Added new copyright headers.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 5838
diff changeset
2 * Software engineering by Intevation GmbH
4897a58c8746 River artifacts: Added new copyright headers.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 5838
diff changeset
3 *
5994
af13ceeba52a Removed trailing whitespace.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 5863
diff changeset
4 * This file is Free Software under the GNU AGPL (>=v3)
5863
4897a58c8746 River artifacts: Added new copyright headers.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 5838
diff changeset
5 * and comes with ABSOLUTELY NO WARRANTY! Check out the
5994
af13ceeba52a Removed trailing whitespace.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 5863
diff changeset
6 * documentation coming with Dive4Elements River for details.
5863
4897a58c8746 River artifacts: Added new copyright headers.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 5838
diff changeset
7 */
4897a58c8746 River artifacts: Added new copyright headers.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 5838
diff changeset
8
5831
bd047b71ab37 Repaired internal references
Sascha L. Teichmann <teichmann@intevation.de>
parents: 5343
diff changeset
9 package org.dive4elements.river.artifacts.services;
4213
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
10
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
11 import java.awt.Dimension;
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
12 import java.awt.Transparency;
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
13 import java.awt.image.BufferedImage;
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
14 import java.io.ByteArrayOutputStream;
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
15 import java.io.IOException;
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
16
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
17 import javax.imageio.ImageIO;
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
18
9726
0a5239a1e46e Upgrade to Log4j 2
Tom Gottfried <tom@intevation.de>
parents: 8574
diff changeset
19 import org.apache.logging.log4j.Logger;
0a5239a1e46e Upgrade to Log4j 2
Tom Gottfried <tom@intevation.de>
parents: 8574
diff changeset
20 import org.apache.logging.log4j.LogManager;
4213
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
21 import org.jfree.chart.JFreeChart;
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
22 import org.w3c.dom.Document;
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
23 import org.w3c.dom.Element;
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
24 import org.w3c.dom.NodeList;
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
25
5831
bd047b71ab37 Repaired internal references
Sascha L. Teichmann <teichmann@intevation.de>
parents: 5343
diff changeset
26 import org.dive4elements.artifactdatabase.DefaultService;
bd047b71ab37 Repaired internal references
Sascha L. Teichmann <teichmann@intevation.de>
parents: 5343
diff changeset
27 import org.dive4elements.artifacts.CallMeta;
bd047b71ab37 Repaired internal references
Sascha L. Teichmann <teichmann@intevation.de>
parents: 5343
diff changeset
28 import org.dive4elements.artifacts.GlobalContext;
bd047b71ab37 Repaired internal references
Sascha L. Teichmann <teichmann@intevation.de>
parents: 5343
diff changeset
29 import org.dive4elements.artifacts.Service;
4213
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
30
5343
61f4d4164a30 Doc, cosmetics.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 4213
diff changeset
31 /** Serve chart. */
4213
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
32 public abstract class AbstractChartService extends DefaultService {
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
33
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
34 public static final int DEFAULT_WIDTH = 240;
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
35 public static final int DEFAULT_HEIGHT = 180;
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
36
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
37 public static final String DEFAULT_FORMAT = "png";
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
38
9726
0a5239a1e46e Upgrade to Log4j 2
Tom Gottfried <tom@intevation.de>
parents: 8574
diff changeset
39 private static final Logger log = LogManager
4213
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
40 .getLogger(AbstractChartService.class);
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
41
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
42 // TODO: Load fancy image from resources.
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
43 public static final byte[] EMPTY = { (byte) 0x89, (byte) 0x50, (byte) 0x4e,
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
44 (byte) 0x47, (byte) 0x0d, (byte) 0x0a, (byte) 0x1a, (byte) 0x0a,
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
45 (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x0d, (byte) 0x49,
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
46 (byte) 0x48, (byte) 0x44, (byte) 0x52, (byte) 0x00, (byte) 0x00,
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
47 (byte) 0x00, (byte) 0x01, (byte) 0x00, (byte) 0x00, (byte) 0x00,
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
48 (byte) 0x01, (byte) 0x08, (byte) 0x00, (byte) 0x00, (byte) 0x00,
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
49 (byte) 0x00, (byte) 0x3a, (byte) 0x7e, (byte) 0x9b, (byte) 0x55,
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
50 (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x01, (byte) 0x73,
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
51 (byte) 0x52, (byte) 0x47, (byte) 0x42, (byte) 0x00, (byte) 0xae,
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
52 (byte) 0xce, (byte) 0x1c, (byte) 0xe9, (byte) 0x00, (byte) 0x00,
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
53 (byte) 0x00, (byte) 0x09, (byte) 0x70, (byte) 0x48, (byte) 0x59,
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
54 (byte) 0x73, (byte) 0x00, (byte) 0x00, (byte) 0x0b, (byte) 0x13,
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
55 (byte) 0x00, (byte) 0x00, (byte) 0x0b, (byte) 0x13, (byte) 0x01,
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
56 (byte) 0x00, (byte) 0x9a, (byte) 0x9c, (byte) 0x18, (byte) 0x00,
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
57 (byte) 0x00, (byte) 0x00, (byte) 0x07, (byte) 0x74, (byte) 0x49,
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
58 (byte) 0x4d, (byte) 0x45, (byte) 0x07, (byte) 0xdc, (byte) 0x04,
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
59 (byte) 0x04, (byte) 0x10, (byte) 0x30, (byte) 0x15, (byte) 0x7d,
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
60 (byte) 0x77, (byte) 0x36, (byte) 0x0b, (byte) 0x00, (byte) 0x00,
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
61 (byte) 0x00, (byte) 0x08, (byte) 0x74, (byte) 0x45, (byte) 0x58,
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
62 (byte) 0x74, (byte) 0x43, (byte) 0x6f, (byte) 0x6d, (byte) 0x6d,
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
63 (byte) 0x65, (byte) 0x6e, (byte) 0x74, (byte) 0x00, (byte) 0xf6,
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
64 (byte) 0xcc, (byte) 0x96, (byte) 0xbf, (byte) 0x00, (byte) 0x00,
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
65 (byte) 0x00, (byte) 0x0a, (byte) 0x49, (byte) 0x44, (byte) 0x41,
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
66 (byte) 0x54, (byte) 0x08, (byte) 0xd7, (byte) 0x63, (byte) 0xf8,
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
67 (byte) 0x0f, (byte) 0x00, (byte) 0x01, (byte) 0x01, (byte) 0x01,
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
68 (byte) 0x00, (byte) 0x1b, (byte) 0xb6, (byte) 0xee, (byte) 0x56,
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
69 (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x49,
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
70 (byte) 0x45, (byte) 0x4e, (byte) 0x44, (byte) 0xae, (byte) 0x42,
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
71 (byte) 0x60, (byte) 0x82 };
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
72
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
73 private static final Output empty() {
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
74 return new Output(EMPTY, "image/png");
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
75 }
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
76
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
77 protected abstract JFreeChart createChart(Document data,
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
78 GlobalContext globalContext, CallMeta callMeta);
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
79
8574
c16d04f2c5bc There seems to be no use case for not overriding these methods.
Tom Gottfried <tom@intevation.de>
parents: 5994
diff changeset
80 protected abstract void init();
4213
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
81
8574
c16d04f2c5bc There seems to be no use case for not overriding these methods.
Tom Gottfried <tom@intevation.de>
parents: 5994
diff changeset
82 protected abstract void finish();
4213
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
83
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
84 @Override
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
85 public Service.Output process(Document data, GlobalContext globalContext,
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
86 CallMeta callMeta) {
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
87 log.debug("process");
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
88
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
89 init();
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
90 try {
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
91 JFreeChart chart = createChart(data, globalContext, callMeta);
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
92
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
93 if (chart == null) {
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
94 return empty();
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
95 }
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
96
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
97 Dimension extent = getExtent(data);
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
98 String format = getFormat(data);
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
99
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
100 return encode(chart, extent, format);
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
101 }
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
102 finally {
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
103 finish();
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
104 }
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
105 }
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
106
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
107 protected static Output encode(JFreeChart chart, Dimension extent,
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
108 String format) {
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
109 BufferedImage image = chart.createBufferedImage(extent.width,
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
110 extent.height, Transparency.BITMASK, null);
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
111
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
112 ByteArrayOutputStream out = new ByteArrayOutputStream();
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
113
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
114 try {
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
115 ImageIO.write(image, format, out);
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
116 }
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
117 catch (IOException ioe) {
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
118 log.warn("writing image failed", ioe);
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
119 return empty();
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
120 }
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
121
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
122 return new Output(out.toByteArray(), "image/" + format);
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
123 }
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
124
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
125 protected static Dimension getExtent(Document input) {
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
126
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
127 int width = DEFAULT_WIDTH;
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
128 int height = DEFAULT_HEIGHT;
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
129
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
130 NodeList extents = input.getElementsByTagName("extent");
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
131
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
132 if (extents.getLength() > 0) {
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
133 Element element = (Element) extents.item(0);
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
134 String w = element.getAttribute("width");
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
135 String h = element.getAttribute("height");
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
136
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
137 try {
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
138 width = Math.max(1, Integer.parseInt(w));
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
139 }
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
140 catch (NumberFormatException nfe) {
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
141 log.warn("width '" + w + "' is not a valid.");
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
142 }
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
143
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
144 try {
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
145 height = Math.max(1, Integer.parseInt(h));
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
146 }
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
147 catch (NumberFormatException nfe) {
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
148 log.warn("height '" + h + "' is not a valid");
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
149 }
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
150 }
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
151
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
152 return new Dimension(width, height);
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
153 }
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
154
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
155 protected static String getFormat(Document input) {
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
156 String format = DEFAULT_FORMAT;
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
157
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
158 NodeList formats = input.getElementsByTagName("format");
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
159
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
160 if (formats.getLength() > 0) {
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
161 String type = ((Element) formats.item(0)).getAttribute("type");
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
162 if (type.length() > 0) {
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
163 format = type;
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
164 }
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
165 }
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
166
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
167 return format;
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
168 }
0674d89210f5 Added a new service to query a diagram with discharge tables.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
169 }
http://dive4elements.wald.intevation.org