Mercurial > dive4elements > river

annotate flys-aft/src/main/java/de/intevation/db/SymbolicStatement.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 7a68967ca72a
children
rev   line source
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
1 package de.intevation.db;
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2
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f939e1e6cfa4 Sorted imports.
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3 import java.sql.Connection;
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4 import java.sql.PreparedStatement;
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5 import java.sql.ResultSet;
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6 import java.sql.SQLException;
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7 import java.sql.Timestamp;
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8
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9 import java.util.ArrayList;
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10 import java.util.HashMap;
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11 import java.util.List;
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12 import java.util.Map;
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13
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14 import java.util.regex.Matcher;
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15 import java.util.regex.Pattern;
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16
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17 import org.apache.log4j.Logger;
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18
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19 public class SymbolicStatement {
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20
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21 private static Logger log = Logger.getLogger(SymbolicStatement.class);
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22
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23 public static final Pattern VAR = Pattern.compile(":([a-zA-Z0-9_]+)");
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24
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25 protected String statement;
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26 protected String compiled;
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27 protected Map<String, List<Integer>> positions;
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28
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29 public class Instance {
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30
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31 /** TODO: Support more types. */
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32
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33 protected PreparedStatement stmnt;
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34
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35 public Instance(Connection connection) throws SQLException {
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36 stmnt = connection.prepareStatement(compiled);
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37 }
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38
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39 public void close() {
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40 try {
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41 stmnt.close();
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42 }
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43 catch (SQLException sqle) {
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44 log.error("cannot close statement", sqle);
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45 }
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46 }
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47
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039413d7e394 Load gauges from both dbs.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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48 public Instance setInt(String key, int value)
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49 throws SQLException
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50 {
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51 List<Integer> pos = positions.get(key.toLowerCase());
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52 if (pos != null) {
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53 for (Integer p: pos) {
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54 stmnt.setInt(p, value);
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55 }
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56 }
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57
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58 return this;
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59 }
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60
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61 public Instance setString(String key, String value)
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62 throws SQLException
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63 {
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64 List<Integer> pos = positions.get(key.toLowerCase());
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65 if (pos != null) {
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66 for (Integer p: pos) {
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67 stmnt.setString(p, value);
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68 }
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69 }
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70 return this;
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71 }
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72
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73 public Instance setObject(String key, Object value)
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74 throws SQLException
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75 {
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76 List<Integer> pos = positions.get(key.toLowerCase());
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77 if (pos != null) {
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78 for (Integer p: pos) {
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79 stmnt.setObject(p, value);
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80 }
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81 }
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82 return this;
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83 }
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84
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85 public Instance setTimestamp(String key, Timestamp value)
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86 throws SQLException
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87 {
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88 List<Integer> pos = positions.get(key.toLowerCase());
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89 if (pos != null) {
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90 for (Integer p: pos) {
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91 stmnt.setTimestamp(p, value);
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92 }
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93 }
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94 return this;
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95 }
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96
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aad1886ea226 Store new gauges in FLYS db.
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97 public Instance setDouble(String key, double value)
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98 throws SQLException
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99 {
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100 List<Integer> pos = positions.get(key.toLowerCase());
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101 if (pos != null) {
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102 for (Integer p: pos) {
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103 stmnt.setDouble(p, value);
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104 }
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105 }
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106 return this;
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107 }
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108
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981de0b77c6b If gauges exist in FLYS and AFT store the discharge tables in FLYS that are only in AFT.
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109 public Instance setLong(String key, long value)
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110 throws SQLException
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981de0b77c6b If gauges exist in FLYS and AFT store the discharge tables in FLYS that are only in AFT.
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parents: 4087
diff changeset
111 {
981de0b77c6b If gauges exist in FLYS and AFT store the discharge tables in FLYS that are only in AFT.
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parents: 4087
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112 List<Integer> pos = positions.get(key.toLowerCase());
981de0b77c6b If gauges exist in FLYS and AFT store the discharge tables in FLYS that are only in AFT.
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parents: 4087
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113 if (pos != null) {
981de0b77c6b If gauges exist in FLYS and AFT store the discharge tables in FLYS that are only in AFT.
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114 for (Integer p: pos) {
981de0b77c6b If gauges exist in FLYS and AFT store the discharge tables in FLYS that are only in AFT.
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115 stmnt.setLong(p, value);
981de0b77c6b If gauges exist in FLYS and AFT store the discharge tables in FLYS that are only in AFT.
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parents: 4087
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116 }
981de0b77c6b If gauges exist in FLYS and AFT store the discharge tables in FLYS that are only in AFT.
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parents: 4087
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117 }
981de0b77c6b If gauges exist in FLYS and AFT store the discharge tables in FLYS that are only in AFT.
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parents: 4087
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118 return this;
981de0b77c6b If gauges exist in FLYS and AFT store the discharge tables in FLYS that are only in AFT.
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parents: 4087
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119 }
981de0b77c6b If gauges exist in FLYS and AFT store the discharge tables in FLYS that are only in AFT.
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parents: 4087
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120
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039413d7e394 Load gauges from both dbs.
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121 public Instance setNull(String key, int sqlType)
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122 throws SQLException
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123 {
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124 List<Integer> pos = positions.get(key.toLowerCase());
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parents:
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125 if (pos != null) {
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parents:
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126 for (Integer p: pos) {
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127 stmnt.setNull(p, sqlType);
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128 }
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129 }
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039413d7e394 Load gauges from both dbs.
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130 return this;
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131 }
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132
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133 public Instance set(Map<String, Object> map) throws SQLException {
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134 for (Map.Entry<String, Object> entry: map.entrySet()) {
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135 setObject(entry.getKey(), entry.getValue());
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136 }
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137 return this;
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138 }
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139
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140 public Instance clearParameters() throws SQLException {
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141 stmnt.clearParameters();
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142 return this;
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143 }
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144
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145 public boolean execute() throws SQLException {
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146 if (log.isDebugEnabled()) {
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147 log.debug("execute: " + compiled);
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148 }
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149 return stmnt.execute();
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150 }
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151
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152 public ResultSet executeQuery() throws SQLException {
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153 if (log.isDebugEnabled()) {
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154 log.debug("query: " + compiled);
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155 }
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156 return stmnt.executeQuery();
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157 }
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158
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159 public int executeUpdate() throws SQLException {
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160 if (log.isDebugEnabled()) {
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161 log.debug("update: " + compiled);
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162 }
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163 return stmnt.executeUpdate();
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164 }
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165
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166 } // class Instance
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167
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168 public SymbolicStatement(String statement) {
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169 this.statement = statement;
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170 compile();
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171 }
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172
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173 public String getStatement() {
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174 return statement;
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175 }
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176
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177 protected void compile() {
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178 positions = new HashMap<String, List<Integer>>();
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179
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180 StringBuffer sb = new StringBuffer();
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181 Matcher m = VAR.matcher(statement);
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182 int index = 1;
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183 while (m.find()) {
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184 String key = m.group(1).toLowerCase();
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185 List<Integer> list = positions.get(key);
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186 if (list == null) {
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187 list = new ArrayList<Integer>();
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188 positions.put(key, list);
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189 }
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190 list.add(index++);
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191 m.appendReplacement(sb, "?");
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192 }
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193 m.appendTail(sb);
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194 compiled = sb.toString();
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195 }
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196 } // class SymbolicStatement
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