Mercurial > dive4elements > framework

annotate artifact-database/src/main/java/org/dive4elements/artifactdatabase/db/SQL.java @ 570:584591f8203c 3.2.x

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Upgrade to Log4j 2
author Tom Gottfried <tom@intevation.de>
date Mon, 28 Feb 2022 17:41:14 +0100
parents 415df0fc4fa1
children
rev   line source
475
415df0fc4fa1 Fixed maven group ids
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1 package org.dive4elements.artifactdatabase.db;
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3 import java.util.Properties;
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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.logging.log4j.Logger;
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9 import org.apache.logging.log4j.LogManager;
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11 public class SQL {
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12
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13 private static Logger logger = LogManager.getLogger(SQL.class);
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15 protected Properties statements;
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17 public SQL() {
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18 }
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20 public SQL(String driver) {
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21 this(SQL.class, driver);
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22 }
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24 public SQL(Class clazz, String driver) {
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25 this(clazz, "/sql", driver);
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26 }
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28 public SQL(Class clazz, String resourcePath, String driver) {
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29 statements = loadStatements(clazz, resourcePath, driver);
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30 }
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32 public static final String driverToProperties(String driver) {
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33 return driver.replace('.', '-').toLowerCase() + ".properties";
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34 }
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36 /**
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37 * Returns key/value pairs of SQL statements for the used database
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38 * backend.
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39 * The concrete set of SQL statements is determined by the
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40 * used JDBC database driver which is configured in conf.xml.
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41 * The class name of the driver is transformed by replacing
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42 * all '.' with '_' and lower case the resulting string.
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43 * The transformed string is used to load a properties file
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44 * in '/sql/' which should contain the statements.
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45 * Example:<br>
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46 * <code>org.postgresql.Driver</code> results in loading of
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47 * <code>/sql/org-postgresql-driver.properties</code>.
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48 * @return The key/value pairs of SQL statements.
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49 */
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50 protected Properties loadStatements(
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51 Class clazz,
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52 String resourcePath,
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53 String driver
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54 ) {
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55 logger.debug("loadStatements");
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56
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57 Properties properties = new Properties();
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59 String resDriver = driverToProperties(driver);
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61 InputStream in = null;
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62 try {
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63 String res = resourcePath + "/" + resDriver;
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64
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65 in = clazz.getResourceAsStream(res);
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66
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67 if (in == null) {
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68 logger.warn("No SQL file for driver '" + driver + "' found.");
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69 resDriver = driverToProperties(DBConnection.DEFAULT_DRIVER);
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70 res = resourcePath + "/" + resDriver;
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72 in = clazz.getResourceAsStream(res);
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73 if (in == null) {
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74 logger.error("No SQL file for driver '" +
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75 DBConnection.DEFAULT_DRIVER + "' found.");
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76 }
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77 }
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78 else {
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79 if (logger.isDebugEnabled()) {
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80 logger.debug("found resource: " + res);
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81 }
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82 }
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84 if (in != null) {
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85 properties.load(in);
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86 }
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87 }
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88 catch (IOException ioe) {
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89 logger.error(ioe);
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90 }
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92 return properties;
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93 }
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95 public String get(String key) {
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96 boolean debug = logger.isDebugEnabled();
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97 if (debug) {
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98 logger.debug("looking for SQL " + key);
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99 logger.debug("statements != null: " + (statements != null));
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100 }
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101
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102 String sql = statements.getProperty(key);
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103
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104 if (sql == null) {
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105 logger.error("cannot find SQL for key '" + key + "'");
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106 }
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107
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108 if (debug) {
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109 logger.debug("-> '" + sql + "'");
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110 }
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111
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112 return sql;
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113 }
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114 }
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115 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org