Mercurial > dive4elements > river
annotate etl/src/main/java/org/dive4elements/river/etl/db/SymbolicStatement.java @ 5991:6f80d5f375fd
Removed trailing whitespace.
author | Sascha L. Teichmann <teichmann@intevation.de> |
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date | Sun, 12 May 2013 18:07:03 +0200 |
parents | 8bd9b551456c |
children | 0a5239a1e46e |
rev | line source |
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1 /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde |
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2 * Software engineering by Intevation GmbH |
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3 * |
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4 * This file is Free Software under the GNU AGPL (>=v3) |
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5 * and comes with ABSOLUTELY NO WARRANTY! Check out the |
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6 * documentation coming with Dive4Elements River for details. |
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7 */ |
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8 |
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9 package org.dive4elements.river.etl.db; |
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10 |
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11 import java.sql.Connection; |
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12 import java.sql.PreparedStatement; |
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13 import java.sql.ResultSet; |
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14 import java.sql.SQLException; |
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15 import java.sql.Timestamp; |
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16 |
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17 import java.util.ArrayList; |
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18 import java.util.HashMap; |
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19 import java.util.List; |
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20 import java.util.Map; |
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21 |
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22 import java.util.regex.Matcher; |
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23 import java.util.regex.Pattern; |
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24 |
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25 import org.apache.log4j.Logger; |
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26 |
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27 public class SymbolicStatement { |
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28 |
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29 private static Logger log = Logger.getLogger(SymbolicStatement.class); |
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30 |
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31 public static final Pattern VAR = Pattern.compile(":([a-zA-Z0-9_]+)"); |
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32 |
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33 protected String statement; |
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34 protected String compiled; |
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35 protected Map<String, List<Integer>> positions; |
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36 |
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37 public class Instance { |
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38 |
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39 /** TODO: Support more types. */ |
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40 |
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41 protected PreparedStatement stmnt; |
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42 |
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43 public Instance(Connection connection) throws SQLException { |
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44 stmnt = connection.prepareStatement(compiled); |
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45 } |
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46 |
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47 public void close() { |
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48 try { |
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49 stmnt.close(); |
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50 } |
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51 catch (SQLException sqle) { |
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52 log.error("cannot close statement", sqle); |
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53 } |
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54 } |
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55 |
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56 public Instance setInt(String key, int value) |
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57 throws SQLException |
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58 { |
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59 List<Integer> pos = positions.get(key.toLowerCase()); |
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60 if (pos != null) { |
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61 for (Integer p: pos) { |
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62 stmnt.setInt(p, value); |
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63 } |
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64 } |
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65 |
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66 return this; |
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67 } |
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68 |
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69 public Instance setString(String key, String value) |
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70 throws SQLException |
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71 { |
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72 List<Integer> pos = positions.get(key.toLowerCase()); |
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73 if (pos != null) { |
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74 for (Integer p: pos) { |
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75 stmnt.setString(p, value); |
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76 } |
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77 } |
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78 return this; |
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79 } |
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80 |
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81 public Instance setObject(String key, Object value) |
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82 throws SQLException |
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83 { |
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84 List<Integer> pos = positions.get(key.toLowerCase()); |
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85 if (pos != null) { |
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86 for (Integer p: pos) { |
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87 stmnt.setObject(p, value); |
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88 } |
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89 } |
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90 return this; |
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91 } |
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92 |
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93 public Instance setTimestamp(String key, Timestamp value) |
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94 throws SQLException |
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95 { |
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96 List<Integer> pos = positions.get(key.toLowerCase()); |
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97 if (pos != null) { |
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98 for (Integer p: pos) { |
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99 stmnt.setTimestamp(p, value); |
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100 } |
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101 } |
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102 return this; |
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103 } |
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104 |
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105 public Instance setDouble(String key, double value) |
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106 throws SQLException |
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107 { |
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108 List<Integer> pos = positions.get(key.toLowerCase()); |
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109 if (pos != null) { |
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110 for (Integer p: pos) { |
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111 stmnt.setDouble(p, value); |
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112 } |
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113 } |
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114 return this; |
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115 } |
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116 |
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If gauges exist in FLYS and AFT store the discharge tables in FLYS that are only in AFT.
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117 public Instance setLong(String key, long value) |
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118 throws SQLException |
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119 { |
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120 List<Integer> pos = positions.get(key.toLowerCase()); |
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121 if (pos != null) { |
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122 for (Integer p: pos) { |
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123 stmnt.setLong(p, value); |
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124 } |
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125 } |
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126 return this; |
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127 } |
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128 |
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129 public Instance setNull(String key, int sqlType) |
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130 throws SQLException |
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131 { |
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132 List<Integer> pos = positions.get(key.toLowerCase()); |
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133 if (pos != null) { |
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134 for (Integer p: pos) { |
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135 stmnt.setNull(p, sqlType); |
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136 } |
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137 } |
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138 return this; |
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139 } |
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140 |
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141 public Instance set(Map<String, Object> map) throws SQLException { |
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142 for (Map.Entry<String, Object> entry: map.entrySet()) { |
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143 setObject(entry.getKey(), entry.getValue()); |
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144 } |
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145 return this; |
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146 } |
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147 |
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148 public Instance clearParameters() throws SQLException { |
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149 stmnt.clearParameters(); |
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150 return this; |
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151 } |
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152 |
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153 public boolean execute() throws SQLException { |
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154 if (log.isDebugEnabled()) { |
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155 log.debug("execute: " + compiled); |
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156 } |
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157 return stmnt.execute(); |
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158 } |
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159 |
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160 public ResultSet executeQuery() throws SQLException { |
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161 if (log.isDebugEnabled()) { |
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162 log.debug("query: " + compiled); |
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163 } |
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164 return stmnt.executeQuery(); |
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165 } |
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166 |
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167 public int executeUpdate() throws SQLException { |
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168 if (log.isDebugEnabled()) { |
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169 log.debug("update: " + compiled); |
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170 } |
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171 return stmnt.executeUpdate(); |
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172 } |
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173 |
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174 } // class Instance |
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175 |
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176 public SymbolicStatement(String statement) { |
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177 this.statement = statement; |
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178 compile(); |
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179 } |
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180 |
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181 public String getStatement() { |
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182 return statement; |
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183 } |
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184 |
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185 protected void compile() { |
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186 positions = new HashMap<String, List<Integer>>(); |
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187 |
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188 StringBuffer sb = new StringBuffer(); |
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189 Matcher m = VAR.matcher(statement); |
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190 int index = 1; |
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191 while (m.find()) { |
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192 String key = m.group(1).toLowerCase(); |
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193 List<Integer> list = positions.get(key); |
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194 if (list == null) { |
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195 list = new ArrayList<Integer>(); |
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196 positions.put(key, list); |
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197 } |
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198 list.add(index++); |
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199 m.appendReplacement(sb, "?"); |
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200 } |
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201 m.appendTail(sb); |
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202 compiled = sb.toString(); |
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203 } |
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204 } // class SymbolicStatement |