Mercurial > dive4elements > river

annotate flys-aft/src/main/java/de/intevation/db/SymbolicStatement.java @ 4269:0c766c475805

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Add Panel and Tree UI classes for dispayling the measurement station info The new ui classes are using the new extracted base class InfoPanel and InfoTree which are in common with the gauge info.
author Björn Ricks <bjoern.ricks@intevation.de>
date Fri, 26 Oct 2012 12:22:06 +0200
parents 981de0b77c6b
children b195fede1c3b
rev   line source
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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.util.List;
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4 import java.util.ArrayList;
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5 import java.util.Map;
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6 import java.util.HashMap;
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7
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8 import java.util.regex.Matcher;
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9 import java.util.regex.Pattern;
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10
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11 import java.sql.Connection;
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12 import java.sql.SQLException;
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13 import java.sql.PreparedStatement;
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14 import java.sql.Timestamp;
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15 import java.sql.ResultSet;
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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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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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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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111 {
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112 List<Integer> pos = positions.get(key.toLowerCase());
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113 if (pos != null) {
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114 for (Integer p: pos) {
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115 stmnt.setLong(p, value);
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116 }
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117 }
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118 return this;
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119 }
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120
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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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125 if (pos != null) {
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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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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 return stmnt.execute();
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147 }
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148
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149 public ResultSet executeQuery() throws SQLException {
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150 return stmnt.executeQuery();
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151 }
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152
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153 public int executeUpdate() throws SQLException {
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154 return stmnt.executeUpdate();
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155 }
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156
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157 } // class Instance
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158
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159 public SymbolicStatement(String statement) {
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160 this.statement = statement;
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161 compile();
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162 }
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163
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164 public String getStatement() {
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165 return statement;
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166 }
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167
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168 protected void compile() {
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169 positions = new HashMap<String, List<Integer>>();
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170
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171 StringBuffer sb = new StringBuffer();
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172 Matcher m = VAR.matcher(statement);
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173 int index = 1;
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174 while (m.find()) {
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175 String key = m.group(1).toLowerCase();
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176 List<Integer> list = positions.get(key);
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177 if (list == null) {
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178 list = new ArrayList<Integer>();
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179 positions.put(key, list);
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180 }
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181 list.add(index++);
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182 m.appendReplacement(sb, "?");
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183 }
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184 m.appendTail(sb);
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185 compiled = sb.toString();
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186 }
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187 } // class SymbolicStatement
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