Mercurial > dive4elements > river

annotate flys-aft/src/main/java/de/intevation/db/Statements.java @ 4269:0c766c475805

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Add Panel and Tree UI classes for dispayling the measurement station info The new ui classes are using the new extracted base class InfoPanel and InfoTree which are in common with the gauge info.
author Björn Ricks <bjoern.ricks@intevation.de>
date Fri, 26 Oct 2012 12:22:06 +0200
parents 100c4e0a45e1
children 79bb64f66c74
rev   line source
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21e49e0a2307 Add infrastructure to load SQL statements for databases.
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1 package de.intevation.db;
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2
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3 import java.util.Properties;
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4
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5 import java.io.IOException;
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6 import java.io.InputStream;
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7
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8 import org.apache.log4j.Logger;
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9
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10 import java.util.Map;
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11 import java.util.HashMap;
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12 import java.util.Enumeration;
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13
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14 public class Statements
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15 {
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16 private static Logger log = Logger.getLogger(Statements.class);
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17
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18 public static final String RESOURCE_PATH = "/sql/";
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19 public static final String COMMON_PROPERTIES = "-common.properties";
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20
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21 protected String type;
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22 protected String driver;
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23
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24 protected Map<String, SymbolicStatement> statements;
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25
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26 public Statements(String type, String driver) {
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27 this.type = type;
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28 this.driver = driver;
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29 }
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30
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31 public SymbolicStatement getStatement(String key) {
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32 return getStatements().get(key);
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33 }
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34
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35 public Map<String, SymbolicStatement> getStatements() {
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36 if (statements == null) {
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37 statements = loadStatements();
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38 }
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39 return statements;
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40 }
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41
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42 protected Map<String, SymbolicStatement> loadStatements() {
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43 Map<String, SymbolicStatement> statements =
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44 new HashMap<String, SymbolicStatement>();
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45
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46 Properties properties = loadProperties();
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47
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48 for (Enumeration e = properties.propertyNames(); e.hasMoreElements();) {
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49 String key = (String)e.nextElement();
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50 String value = properties.getProperty(key);
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51 SymbolicStatement symbolic = new SymbolicStatement(value);
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52 statements.put(key, symbolic);
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53 }
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54
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55 return statements;
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56 }
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57
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58 protected String driverToProperties() {
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59 return
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60 type + "-" +
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61 driver.replace('.', '-').toLowerCase() + ".properties";
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62 }
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63
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64 protected Properties loadCommon() {
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65 Properties common = new Properties();
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66
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67 String path = RESOURCE_PATH + type + COMMON_PROPERTIES;
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68
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69 InputStream in = Statements.class.getResourceAsStream(path);
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70
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71 if (in != null) {
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72 try {
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73 common.load(in);
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74 }
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75 catch (IOException ioe) {
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76 log.error("cannot load defaults: " + path, ioe);
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77 }
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78 finally {
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79 try {
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80 in.close();
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81 }
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82 catch (IOException ioe) {
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83 }
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84 }
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85 }
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86 else {
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87 log.warn("cannot find: " + path);
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88 }
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89
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90 return common;
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91 }
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92
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93 protected Properties loadProperties() {
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94
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95 Properties common = loadCommon();
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96
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97 Properties properties = new Properties(common);
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98
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99 String path = RESOURCE_PATH + driverToProperties();
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100
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101 InputStream in = Statements.class.getResourceAsStream(path);
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102
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103 if (in != null) {
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104 try {
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105 properties.load(in);
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106 }
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107 catch (IOException ioe) {
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108 log.error("cannot load statements: " + path, ioe);
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109 }
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110 finally {
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111 try {
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112 in.close();
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113 }
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114 catch (IOException ioe) {
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115 }
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116 }
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117 }
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118 else {
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119 log.warn("cannot find: " + path);
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120 }
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121
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122 return properties;
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123 }
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124 }
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125 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org