Mercurial > dive4elements > river

annotate artifacts/src/main/java/org/dive4elements/river/artifacts/states/DischargeState.java @ 5863:4897a58c8746

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River artifacts: Added new copyright headers.
author Sascha L. Teichmann <teichmann@intevation.de>
date Sun, 28 Apr 2013 14:40:59 +0200
parents 5aa05a7a34b7
children 73da40528cf2
rev   line source
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4897a58c8746 River artifacts: Added new copyright headers.
Sascha L. Teichmann <teichmann@intevation.de>
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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.artifacts.states;
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10
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11 import java.util.List;
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12
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13 import org.apache.log4j.Logger;
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14
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15 import org.dive4elements.artifacts.Artifact;
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16 import org.dive4elements.artifacts.CallContext;
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17
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18 import org.dive4elements.artifacts.common.model.KVP;
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19
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20 import org.dive4elements.river.model.DischargeZone;
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21 import org.dive4elements.river.model.River;
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22
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23 import org.dive4elements.river.artifacts.FLYSArtifact;
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24 import org.dive4elements.river.utils.FLYSUtils;
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25
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26
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27 public class DischargeState extends MultiIntArrayState {
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28
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29 public static final String MAIN_CHANNEL = "main_channel";
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30 public static final String TOTAL_CHANNEL = "total_channel";
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31
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32
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33 private static final Logger logger = Logger.getLogger(DischargeState.class);
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34
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35
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36 /** Let client display a matrix. */
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37 @Override
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38 public String getUIProvider() {
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39 return "parameter-matrix";
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40 }
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41
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42
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43 /**
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44 * This method fetches all DischargeZones for a given river (extracted from
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45 * <i>artifact</i>) and returns a KVP[] where the key is the ID of the
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46 * DischargeZone and the value is a string that consists of lower discharge
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47 * and upper discharge.
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48 *
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49 * @param artifact Needs to be a FLYSArtifact that provides river
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50 * information.
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51 * @param parameterName The name of a parameter.
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52 *
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53 * @return a KVP[].
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54 */
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55 @Override
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56 protected KVP<Integer, String>[] getOptions(
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57 Artifact artifact,
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58 String parameterName
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59 )
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60 throws IllegalArgumentException
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61 {
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62 if (!testParameterName(parameterName)) {
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63 throw new IllegalArgumentException(
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64 "Invalid parameter for state: '" + parameterName + "'");
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65 }
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66
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67 List<DischargeZone> zones = getDischargeZones(artifact);
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68
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69 KVP[] kvp = new KVP[zones.size()];
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70
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71 for (int i = 0, Z = zones.size(); i < Z; i++) {
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72 DischargeZone zone = zones.get(i);
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73
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74 String lower = zone.getLowerDischarge();
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75 String upper = zone.getUpperDischarge();
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76
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77 if (lower.equals(upper)) {
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78 kvp[i] = new KVP(zone.getId(), lower);
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79 }
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80 else {
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81 kvp[i] = new KVP(zone.getId(), lower + " - " + upper);
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82 }
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83 }
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84
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85 return kvp;
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86 }
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87
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88
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89 @Override
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90 protected String getLabelFor(
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91 CallContext cc,
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92 String parameterName,
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93 int value
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94 ) throws IllegalArgumentException
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95 {
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96 if (!testParameterName(parameterName)) {
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97 throw new IllegalArgumentException(
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98 "Invalid parameter for state: '" + parameterName + "'");
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99 }
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100
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101 DischargeZone zone = DischargeZone.getDischargeZoneById(value);
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102
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103 if (zone == null) {
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104 throw new IllegalArgumentException(
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105 "Invalid id for DischargeZone: '" + value + "'");
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106 }
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107
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108 String lo = zone.getLowerDischarge();
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109 String hi = zone.getUpperDischarge();
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110
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111 return hi != null && !lo.equals(hi)
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112 ? lo + " - " + hi
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113 : lo;
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114 }
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115
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116
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117 /**
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118 * This method might be used to test, if a parameter name is handled by this
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119 * state.
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120 *
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121 * @param parameterName The name of a parameter.
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122 *
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123 * @return true, if parameterName is one of <i>MAIN_CHANNEL</i> or
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124 * <i>TOTAL_CHANNEL</i>. Otherwise false.
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125 */
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126 protected boolean testParameterName(String parameterName) {
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127 if (parameterName == null || parameterName.length() == 0) {
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128 return false;
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129 }
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130 else if (parameterName.equals(MAIN_CHANNEL)) {
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131 return true;
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132 }
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133 else if (parameterName.equals(TOTAL_CHANNEL)) {
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134 return true;
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135 }
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136 else {
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137 return false;
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138 }
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139 }
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140
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141
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142 /**
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143 * Returns all discharge zones for a given river. The river information is
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144 * extracted from <i>artifact</i> using FLYSUtils.getRiver().
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145 *
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146 * @param artifact Needs to be a FLYSArtifact that stores a rivername.
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147 *
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148 * @return a list of DischargeZones.
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149 *
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150 * @throws IllegalArgumentException if no river information is provided by
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151 * <i>artifact</i>.
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152 */
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153 protected List<DischargeZone> getDischargeZones(Artifact artifact)
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154 throws IllegalArgumentException
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155 {
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156 River river = FLYSUtils.getRiver((FLYSArtifact) artifact);
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157
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158 if (river == null) {
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159 throw new IllegalArgumentException("No river found");
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160 }
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161
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162 List<DischargeZone> zones = DischargeZone.getDischargeZones(river);
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163
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164 logger.debug("Found " + zones.size() + " DischargeZones.");
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165
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166 return zones;
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167 }
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168 }
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169 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org