Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/AbstractStaticStateArtifact.java @ 5415:5bac3e75f59c

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WaterlevelSelectState: Avoid npe with extreme results.
author Felix Wolfsteller <felix.wolfsteller@intevation.de>
date Tue, 26 Mar 2013 09:40:05 +0100
parents 79878efbdf07
children
rev   line source
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1 package de.intevation.flys.artifacts;
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2
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3 import java.util.ArrayList;
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4 import java.util.Collection;
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5 import java.util.List;
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6
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7 import org.apache.log4j.Logger;
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8
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9 import org.w3c.dom.Document;
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10 import org.w3c.dom.Element;
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11
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12 import de.intevation.artifacts.CallContext;
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13 import de.intevation.artifacts.ArtifactNamespaceContext;
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14
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15 import de.intevation.artifacts.common.utils.XMLUtils;
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16 import de.intevation.artifacts.common.utils.XMLUtils.ElementCreator;
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17
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18 import de.intevation.artifactdatabase.ProtocolUtils;
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19 import de.intevation.artifactdatabase.data.StateData;
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20 import de.intevation.artifactdatabase.state.State;
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21
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22 import de.intevation.flys.artifacts.states.StaticState;
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23
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24 /**
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25 * A abstract baseclass for Artifacts which are using only one static state.
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26 *
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27 * This class is intended to be used without the config/stateengine to generate
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28 * the static state.
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29 *
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30 * @author <a href="mailto:bjoern.ricks@intevation.de">Björn Ricks</a>
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31 */
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32 public abstract class AbstractStaticStateArtifact extends StaticFLYSArtifact {
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33
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34 private transient StaticState staticstate;
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35
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36 private static final Logger logger =
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37 Logger.getLogger(AbstractStaticStateArtifact.class);
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38
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39 /**
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40 * Get a list containing the one and only State.
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41 * @param context ignored.
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42 * @return list with one and only state.
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43 */
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44 @Override
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45 protected List<State> getStates(Object context) {
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46 ArrayList<State> states = new ArrayList<State>();
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47 states.add(getStaticState());
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48 return states;
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49 }
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50
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51
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52 /**
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53 * Get the "current" state.
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54 * @param cc ignored.
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55 * @return always the set static state.
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56 */
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57 @Override
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58 public State getCurrentState(Object cc) {
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59 return getStaticState();
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60 }
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61
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62 /**
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63 * A child class must override this method to set its static state
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64 */
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65 protected abstract void initStaticState();
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66
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67 protected void setStaticState(StaticState state) {
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68 this.staticstate = state;
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69 }
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70
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71 protected StaticState getStaticState() {
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72 if (staticstate == null) {
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73 initStaticState();
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74 }
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75 return staticstate;
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76 }
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77
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78 /**
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79 * Get the state.
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80 * @param context ignored.
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81 * @param stateID ignored.
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82 * @return the state.
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83 */
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84 @Override
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85 protected State getState(Object context, String stateID) {
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86 return getStaticState();
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87 }
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88
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89 @Override
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90 public Document describe(Document data, CallContext cc) {
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91 logger.debug("Describe artifact: " + identifier());
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92
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93 Document desc = XMLUtils.newDocument();
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94
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95 ElementCreator creator = new ElementCreator(
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96 desc,
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97 ArtifactNamespaceContext.NAMESPACE_URI,
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98 ArtifactNamespaceContext.NAMESPACE_PREFIX);
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99
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100 Element root = ProtocolUtils.createRootNode(creator);
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101 desc.appendChild(root);
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102
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103 Element name = ProtocolUtils.createArtNode(
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104 creator, "name",
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105 new String[] { "value" },
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106 new String[] { getName() });
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107
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108 root.appendChild(name);
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109 root.appendChild(createOutputModes(cc, desc, creator));
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110
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111 ProtocolUtils.appendDescribeHeader(creator, root, identifier(), hash());
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112
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113 // Add the data to an anonymous state.
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114 Collection<StateData> datas = getAllData();
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115 if (datas.size() > 0) {
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116 Element ui = creator.create("ui");
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117 Element staticE = creator.create("static");
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118
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119 StaticState current = getStaticState();
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120 Element state = current.describeStatic(this, desc, root, cc, null);
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121 staticE.appendChild(state);
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122
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123 for (StateData dataItem : datas) {
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124 Element itemelent = creator.create("data");
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125 creator.addAttr(itemelent, "name", dataItem.getName(), true);
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126 creator.addAttr(itemelent, "type", dataItem.getType(), true);
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127 state.appendChild(itemelent);
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128 Element valuement = creator.create("item");
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129 creator.addAttr(valuement, "label", dataItem.getDescription(), true);
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130 creator.addAttr(valuement, "value", dataItem.getValue().toString(), true);
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131 itemelent.appendChild(valuement);
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132 }
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133
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134 ui.appendChild(staticE);
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135 root.appendChild(ui);
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136 }
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137
a699d6c42a8b Override describe method to return also a uiprovider.
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138 return desc;
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139 }
3936
4e1b3b4ef132 Add new Artifacts and State for displaying discharge curves at a gauge
Bjoern Ricks <bjoern.ricks@intevation.de>
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140 }
http://dive4elements.wald.intevation.org