Mercurial > dive4elements > river

annotate flys-backend/src/main/java/de/intevation/flys/backend/SessionFactoryProvider.java @ 4241:49cb65d5932d

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Improved the historical discharge calculation. The calculation now creates new HistoricalWQKms (new subclass of WQKms). Those WQKms are used to create new facets from (new) type 'HistoricalDischargeCurveFacet'. The chart generator is improved to support those facets.
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Wed, 24 Oct 2012 14:34:35 +0200
parents 69f06b83b3ec
children fb9dcc68b9c2
rev   line source
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3035d861a576 SessionFactoryProvider for access to the backend.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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1 package de.intevation.flys.backend;
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2
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3 import java.lang.management.ManagementFactory;
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4
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5 import java.util.Properties;
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6
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7 import javax.management.InstanceAlreadyExistsException;
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8 import javax.management.MBeanRegistrationException;
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9 import javax.management.MBeanServer;
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10 import javax.management.MalformedObjectNameException;
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11 import javax.management.NotCompliantMBeanException;
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12 import javax.management.ObjectName;
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13
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14 import org.apache.log4j.Logger;
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16 import org.hibernate.SessionFactory;
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17
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18 import org.hibernate.cfg.Configuration;
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19 import org.hibernate.cfg.Environment;
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20
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21 import org.hibernate.impl.SessionFactoryImpl;
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22
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23 import org.hibernate.jmx.StatisticsService;
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24
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25 public final class SessionFactoryProvider
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26 {
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27 private static Logger log = Logger.getLogger(SessionFactoryProvider.class);
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29 public static final boolean ENABLE_JMX =
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30 Boolean.getBoolean("flys.backend.enablejmx");
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31
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32 private static SessionFactory flysSessionFactory;
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33 private static SessionFactory sedDBSessionFactory;
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34
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35 private SessionFactoryProvider() {
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36 }
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38 public static synchronized SessionFactory getSessionFactory() {
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39 if (flysSessionFactory == null) {
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40 flysSessionFactory =
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41 createSessionFactory(FLYSCredentials.getInstance());
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42 }
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43 return flysSessionFactory;
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44 }
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45
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46 public static SessionFactory createSessionFactory() {
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47 return createSessionFactory(FLYSCredentials.getDefault());
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48 }
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49
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50 public static synchronized SessionFactory getSedDBSessionFactory() {
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51 if (sedDBSessionFactory == null) {
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52 sedDBSessionFactory =
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53 createSessionFactory(SedDBCredentials.getInstance());
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54 }
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55 return sedDBSessionFactory;
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56 }
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57
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58 public static SessionFactory createSedDBSessionFactory() {
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59 return createSessionFactory(SedDBCredentials.getDefault());
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60 }
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61
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62 public static SessionFactory createSessionFactory(
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63 Credentials credentials
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64 ) {
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65 Configuration cfg = createConfiguration(credentials);
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66
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67 SessionFactory factory = cfg.buildSessionFactory();
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68
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69 if (ENABLE_JMX) {
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70 registerAsMBean(factory);
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71 }
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72 else {
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73 log.info("No JMX support for hibernate.");
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74 }
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75
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76 return factory;
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77 }
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78
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79 public static void registerAsMBean(SessionFactory factory) {
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80
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81 StatisticsService statsMBean = new StatisticsService();
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82 statsMBean.setSessionFactory(factory);
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83 statsMBean.setStatisticsEnabled(true);
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84
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85 try {
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86 MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
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87 mbs.registerMBean(
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88 statsMBean,
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89 new ObjectName("Hibernate:application=Statistics"));
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90
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91 log.info("Enabled JMX support for hibernate.");
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92 }
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93 catch (MalformedObjectNameException mone) {
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94 log.warn(mone, mone);
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95 }
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96 catch (InstanceAlreadyExistsException iaee) {
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97 log.warn(iaee, iaee);
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98 }
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99 catch (MBeanRegistrationException mbre) {
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100 log.warn(mbre, mbre);
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101 }
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102 catch (NotCompliantMBeanException ncmbe) {
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103 log.warn(ncmbe, ncmbe);
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104 }
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105 }
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106
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107 public static Configuration createConfiguration() {
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108 return createConfiguration(FLYSCredentials.getInstance());
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109 }
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111 public static Configuration createConfiguration(
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112 Credentials credentials
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113 ) {
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114 Configuration cfg = new Configuration();
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115
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116 for (Class clazz: credentials.getClasses()) {
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117 cfg.addAnnotatedClass(clazz);
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118 }
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119
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120 if (log.isDebugEnabled()) {
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121 log.debug("user: " + credentials.getUser());
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122 log.debug("dialect: " + credentials.getDialect());
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123 log.debug("driver: " + credentials.getDriver());
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124 log.debug("url: " + credentials.getUrl());
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125 }
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126
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127 Properties props = new Properties();
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128
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129 // We rely on our own connection pool
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130 props.setProperty(
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131 "hibernate.connection.provider_class",
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132 "de.intevation.flys.utils.DBCPConnectionProvider");
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133
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134 props.setProperty(Environment.DIALECT, credentials.getDialect());
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135 props.setProperty(Environment.USER, credentials.getUser());
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136 props.setProperty(Environment.PASS, credentials.getPassword());
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137 props.setProperty(Environment.DRIVER, credentials.getDriver());
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138 props.setProperty(Environment.URL, credentials.getUrl());
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139
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140 cfg.mergeProperties(props);
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141
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142 return cfg;
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143 }
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144
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145
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146 public static String getProperty(SessionFactoryImpl factory, String key) {
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147 Properties props = factory.getProperties();
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148 return props.getProperty(key);
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149 }
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150
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151 public static String getUser(SessionFactoryImpl factory) {
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152 return getProperty(factory, Environment.USER);
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153 }
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154
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155
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156 public static String getPass(SessionFactoryImpl factory) {
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157 return getProperty(factory, Environment.PASS);
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158 }
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159
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160
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161 public static String getURL(SessionFactoryImpl factory) {
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162 return getProperty(factory, Environment.URL);
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163 }
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164
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165
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166 public static String getDriver(SessionFactoryImpl factory) {
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167 return getProperty(factory, Environment.DRIVER);
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168 }
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169 }
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170 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org