Mercurial > dive4elements > river

annotate flys-aft/src/main/java/de/intevation/db/Statements.java @ 5645:696d710470f5

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flys/issue1077: Show loads as step line, therefore transform data in SedimentLoadFacet to stretch as in the measurement stations bounds. Deal with this new kind of data in the Generator.
author Felix Wolfsteller <felix.wolfsteller@intevation.de>
date Wed, 10 Apr 2013 09:35:07 +0200
parents f939e1e6cfa4
children
rev   line source
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21e49e0a2307 Add infrastructure to load SQL statements for databases.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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1 package de.intevation.db;
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2
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3 import java.io.IOException;
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4 import java.io.InputStream;
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5
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6 import java.util.Enumeration;
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7 import java.util.HashMap;
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8 import java.util.Map;
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9 import java.util.Properties;
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10
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11 import org.apache.log4j.Logger;
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12
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13 public class Statements
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14 {
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15 private static Logger log = Logger.getLogger(Statements.class);
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16
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17 public static final String RESOURCE_PATH = "/sql/";
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18 public static final String COMMON_PROPERTIES = "-common.properties";
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19
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20 protected String type;
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21 protected String driver;
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22
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23 protected Map<String, SymbolicStatement> statements;
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24
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25 public Statements(String type, String driver) {
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26 this.type = type;
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27 this.driver = driver;
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28 }
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29
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30 public SymbolicStatement getStatement(String key) {
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31 return getStatements().get(key);
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32 }
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33
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34 public Map<String, SymbolicStatement> getStatements() {
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35 if (statements == null) {
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36 statements = loadStatements();
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37 }
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38 return statements;
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39 }
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40
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41 protected Map<String, SymbolicStatement> loadStatements() {
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42 Map<String, SymbolicStatement> statements =
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43 new HashMap<String, SymbolicStatement>();
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44
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45 Properties properties = loadProperties();
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46
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47 for (Enumeration<?> e = properties.propertyNames(); e.hasMoreElements();) {
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48 String key = (String)e.nextElement();
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49 String value = properties.getProperty(key);
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50 SymbolicStatement symbolic = new SymbolicStatement(value);
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51 statements.put(key, symbolic);
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52 }
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53
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54 return statements;
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55 }
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56
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57 protected String driverToProperties() {
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58 return
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59 type + "-" +
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60 driver.replace('.', '-').toLowerCase() + ".properties";
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61 }
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62
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63 protected Properties loadCommon() {
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64 Properties common = new Properties();
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65
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66 String path = RESOURCE_PATH + type + COMMON_PROPERTIES;
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67
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68 InputStream in = Statements.class.getResourceAsStream(path);
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69
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70 if (in != null) {
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71 try {
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72 common.load(in);
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73 }
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74 catch (IOException ioe) {
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75 log.error("cannot load defaults: " + path, ioe);
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76 }
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77 finally {
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78 try {
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79 in.close();
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80 }
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81 catch (IOException ioe) {
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82 }
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83 }
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84 }
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85 else {
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86 log.warn("cannot find: " + path);
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87 }
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88
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89 return common;
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90 }
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91
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92 protected Properties loadProperties() {
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93
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94 Properties common = loadCommon();
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95
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96 Properties properties = new Properties(common);
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97
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98 String path = RESOURCE_PATH + driverToProperties();
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99
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100 InputStream in = Statements.class.getResourceAsStream(path);
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101
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102 if (in != null) {
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103 try {
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104 properties.load(in);
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105 }
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106 catch (IOException ioe) {
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107 log.error("cannot load statements: " + path, ioe);
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108 }
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109 finally {
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110 try {
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111 in.close();
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112 }
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113 catch (IOException ioe) {
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114 }
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115 }
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116 }
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117 else {
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118 log.warn("cannot find: " + path);
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119 }
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120
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121 return properties;
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122 }
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123 }
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124 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org