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annotate artifact-database/src/main/java/de/intevation/artifactdatabase/ArtifactDatabaseImpl.java @ 68:541814404822

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Added interfaces for XML processing services. TODO: Implement them! artifacts/trunk@593 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Fri, 22 Jan 2010 09:48:18 +0000
parents 89e3de0ee05f
children ce488c1d3fc4
rev   line source
13
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1 package de.intevation.artifactdatabase;
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2
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3 import java.util.HashMap;
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4 import java.util.HashSet;
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5 import java.util.ArrayList;
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6 import java.util.List;
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7
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8 import de.intevation.artifacts.ArtifactDatabaseException;
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9 import de.intevation.artifacts.ArtifactDatabase;
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10 import de.intevation.artifacts.ArtifactFactory;
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11 import de.intevation.artifacts.Artifact;
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12 import de.intevation.artifacts.CallContext;
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13 import de.intevation.artifacts.CallMeta;
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14
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15 import de.intevation.artifactdatabase.Backend.PersistentArtifact;
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17 import org.apache.log4j.Logger;
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18
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19 import org.w3c.dom.Document;
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20
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21 import java.io.OutputStream;
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22 import java.io.IOException;
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23
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24 /**
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25 * @author Sascha L. Teichmann
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26 */
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27 public class ArtifactDatabaseImpl
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28 implements ArtifactDatabase, Id.Filter, Backend.FactoryLookup
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29 {
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30 private static Logger logger =
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31 Logger.getLogger(ArtifactDatabaseImpl.class);
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32
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33 public static final String NO_SUCH_FACTORY =
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34 "No such factory";
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35
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36 public static final String NO_SUCH_ARTIFACT =
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37 "No such artifact";
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38
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39 public static final String NOT_IN_BACKGROUND =
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40 "Not in background";
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41
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42 public static final String INVALID_CALL_STATE =
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43 "Invalid after call state";
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44
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45 public static final String CREATION_FAILED =
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46 "Creation of artifact failed";
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47
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48 public static final String INTERNAL_ERROR =
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49 "Creation of artifact failed";
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50
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51 public class CallContextImpl
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52 implements CallContext
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53 {
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54 protected PersistentArtifact artifact;
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55 protected int action;
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56 protected CallMeta callMeta;
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57 protected HashMap customValues;
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58
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59 public CallContextImpl(
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60 PersistentArtifact artifact,
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61 int action,
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62 CallMeta callMeta
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63 ) {
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64 this.artifact = artifact;
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65 this.action = action;
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66 this.callMeta = callMeta;
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67 }
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68
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69 public void afterCall(int action) {
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70 this.action = action;
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71 if (action == BACKGROUND) {
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72 addIdToBackground(artifact.getId());
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73 }
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74 }
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75
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76 public void afterBackground(int action) {
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77 if (this.action != BACKGROUND) {
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78 throw new IllegalStateException(NOT_IN_BACKGROUND);
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79 }
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80 fromBackground(artifact, action);
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81 }
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82
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83 public Object globalContext() {
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84 return context;
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85 }
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86
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87 public ArtifactDatabase getDatabase() {
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88 return ArtifactDatabaseImpl.this;
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89 }
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90
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91 public CallMeta getMeta() {
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92 return callMeta;
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93 }
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94
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95 public void postCall() {
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96 switch (action) {
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97 case NOTHING:
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98 break;
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99 case TOUCH:
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100 artifact.touch();
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101 break;
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102 case STORE:
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103 artifact.store();
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104 break;
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105 case BACKGROUND:
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106 logger.warn("BACKGROUND processing is not fully implemented, yet!");
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107 artifact.store();
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108 break;
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109 default:
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110 logger.error(INVALID_CALL_STATE + ": " + action);
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111 throw new IllegalStateException(INVALID_CALL_STATE);
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112 }
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113 }
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114
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115 public Object getContextValue(Object key) {
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116 return customValues != null
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117 ? customValues.get(key)
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118 : null;
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119 }
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120
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121 public Object putContextValue(Object key, Object value) {
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122 if (customValues == null) {
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123 customValues = new HashMap();
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124 }
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125 return customValues.put(key, value);
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126 }
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127 } // class CallContextImpl
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128
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129 public class DeferredOutputImpl
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130 implements DeferredOutput
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131 {
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132 protected PersistentArtifact artifact;
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133 protected Document format;
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134 protected CallMeta callMeta;
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135
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136 public DeferredOutputImpl() {
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137 }
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138
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139 public DeferredOutputImpl(
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140 PersistentArtifact artifact,
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141 Document format,
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142 CallMeta callMeta
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143 ) {
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144 this.artifact = artifact;
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145 this.format = format;
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146 this.callMeta = callMeta;
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147 }
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148
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149 public void write(OutputStream output) throws IOException {
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150
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151 CallContextImpl cc = new CallContextImpl(
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152 artifact, CallContext.TOUCH, callMeta);
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153
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154 try {
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155 artifact.getArtifact().out(format, output, cc);
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156 }
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157 finally {
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158 cc.postCall();
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159 }
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160 }
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161 } // class DeferredOutputImpl
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162
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163 protected String [][] factoryNamesAndDescription;
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164 protected HashMap name2factory;
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165
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166 protected Backend backend;
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167 protected Object context;
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168
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169 protected HashSet backgroundIds;
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170
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171 public ArtifactDatabaseImpl() {
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172 }
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173
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174 public ArtifactDatabaseImpl(FactoryBootstrap bootstrap) {
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175 this(bootstrap, null);
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176 }
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177
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178 public ArtifactDatabaseImpl(FactoryBootstrap bootstrap, Backend backend) {
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179
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180 backgroundIds = new HashSet();
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181 name2factory = new HashMap();
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182
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183 ArtifactFactory [] factories = bootstrap.getArtifactFactories();
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184 factoryNamesAndDescription = new String[factories.length][];
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185
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186 for (int i = 0; i < factories.length; ++i) {
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187
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188 ArtifactFactory factory = factories[i];
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189
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190 String name = factory.getName();
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191 String description = factory.getDescription();
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192
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193 factoryNamesAndDescription[i] =
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194 new String [] { name, description };
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195
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196 name2factory.put(name, factory);
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197 }
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198
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199 context = bootstrap.getContext();
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200
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201 wireWithBackend(backend);
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202 }
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203
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204 public void wireWithBackend(Backend backend) {
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205 if (backend != null) {
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206 this.backend = backend;
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207 backend.setFactoryLookup(this);
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208 }
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209 }
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210
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211 protected void fromBackground(PersistentArtifact artifact, int action) {
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212 logger.warn("BACKGROUND processing is not fully implemented, yet!");
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213 switch (action) {
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214 case CallContext.NOTHING:
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215 break;
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216 case CallContext.TOUCH:
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217 artifact.touch();
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218 break;
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219 case CallContext.STORE:
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220 artifact.store();
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221 break;
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222 default:
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223 logger.warn("operation not allowed in fromBackground");
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224 }
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225 removeIdFromBackground(artifact.getId());
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226 }
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227
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228 protected void removeIdFromBackground(int id) {
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229 synchronized (backgroundIds) {
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230 backgroundIds.remove(Integer.valueOf(id));
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231 }
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232 }
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233
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234 protected void addIdToBackground(int id) {
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235 synchronized (backgroundIds) {
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236 backgroundIds.add(Integer.valueOf(id));
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237 }
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238 }
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239
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240 public List filterIds(List ids) {
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241 int N = ids.size();
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242 ArrayList out = new ArrayList(N);
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243 synchronized (backgroundIds) {
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244 for (int i = 0; i < N; ++i) {
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245 Id id = (Id)ids.get(i);
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246 if (!backgroundIds.contains(Integer.valueOf(id.getId()))) {
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247 out.add(id);
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248 }
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249 }
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250 }
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251 return out;
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252 }
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253
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254 public String [][] artifactFactoryNamesAndDescriptions() {
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255 return factoryNamesAndDescription;
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256 }
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diff changeset
257
66
89e3de0ee05f Implemented some methods to get access to ArtifactFactories which are stored in the ArtifactDatabase.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 58
diff changeset
258 public ArtifactFactory getInternalArtifactFactory(String factoryName) {
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
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diff changeset
259 return getArtifactFactory(factoryName);
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
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diff changeset
260 }
89e3de0ee05f Implemented some methods to get access to ArtifactFactories which are stored in the ArtifactDatabase.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
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diff changeset
261
41
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262 public ArtifactFactory getArtifactFactory(String factoryName) {
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263 return (ArtifactFactory)name2factory.get(factoryName);
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264 }
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265
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266 public Document createArtifactWithFactory(
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267 String factoryName,
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268 CallMeta callMeta
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269 )
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270 throws ArtifactDatabaseException
32
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271 {
41
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272 ArtifactFactory factory = getArtifactFactory(factoryName);
32
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273
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diff changeset
274 if (factory == null) {
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275 throw new ArtifactDatabaseException(NO_SUCH_FACTORY);
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276 }
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277
c2d53bd30ab8 Re-factored artifact API for better integration of background processing.
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diff changeset
278 Artifact artifact = factory.createArtifact(
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diff changeset
279 backend.newIdentifier(),
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diff changeset
280 context);
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
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diff changeset
281
c2d53bd30ab8 Re-factored artifact API for better integration of background processing.
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diff changeset
282 if (artifact == null) {
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diff changeset
283 throw new ArtifactDatabaseException(CREATION_FAILED);
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 26
diff changeset
284 }
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 26
diff changeset
285
c2d53bd30ab8 Re-factored artifact API for better integration of background processing.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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286 PersistentArtifact persistentArtifact;
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 26
diff changeset
287
c2d53bd30ab8 Re-factored artifact API for better integration of background processing.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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diff changeset
288 try {
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289 persistentArtifact = backend.storeInitially(
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diff changeset
290 artifact,
41
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 36
diff changeset
291 factory,
32
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diff changeset
292 factory.timeToLiveUntouched(artifact, context));
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
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293 }
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
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diff changeset
294 catch (Exception e) {
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
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diff changeset
295 logger.error(e.getLocalizedMessage(), e);
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
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diff changeset
296 throw new ArtifactDatabaseException(CREATION_FAILED);
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 26
diff changeset
297 }
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 26
diff changeset
298
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diff changeset
299 CallContextImpl cc = new CallContextImpl(
48
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 47
diff changeset
300 persistentArtifact, CallContext.NOTHING, callMeta);
32
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 26
diff changeset
301
c2d53bd30ab8 Re-factored artifact API for better integration of background processing.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 26
diff changeset
302 try {
55
9a29899b31e5 describe() in REST interface is also handled as POST to pass
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 48
diff changeset
303 return artifact.describe(null, cc);
32
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 26
diff changeset
304 }
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 26
diff changeset
305 finally {
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 26
diff changeset
306 cc.postCall();
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 26
diff changeset
307 }
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 26
diff changeset
308 }
c2d53bd30ab8 Re-factored artifact API for better integration of background processing.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 26
diff changeset
309
55
9a29899b31e5 describe() in REST interface is also handled as POST to pass
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diff changeset
310 public Document describe(String identifier, Document data, CallMeta callMeta)
32
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diff changeset
311 throws ArtifactDatabaseException
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parents: 26
diff changeset
312 {
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
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diff changeset
313 // TODO: Handle background tasks
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314 PersistentArtifact artifact = backend.getArtifact(identifier);
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 26
diff changeset
315
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 26
diff changeset
316 if (artifact == null) {
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 26
diff changeset
317 throw new ArtifactDatabaseException(NO_SUCH_ARTIFACT);
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 26
diff changeset
318 }
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 26
diff changeset
319
c2d53bd30ab8 Re-factored artifact API for better integration of background processing.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 26
diff changeset
320 CallContextImpl cc = new CallContextImpl(
48
41c225c8bd41 Add i18n support via "Accept-Language" HTTP headers.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 47
diff changeset
321 artifact, CallContext.TOUCH, callMeta);
32
c2d53bd30ab8 Re-factored artifact API for better integration of background processing.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 26
diff changeset
322
c2d53bd30ab8 Re-factored artifact API for better integration of background processing.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 26
diff changeset
323 try {
55
9a29899b31e5 describe() in REST interface is also handled as POST to pass
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 48
diff changeset
324 return artifact.getArtifact().describe(data, cc);
32
c2d53bd30ab8 Re-factored artifact API for better integration of background processing.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 26
diff changeset
325 }
c2d53bd30ab8 Re-factored artifact API for better integration of background processing.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 26
diff changeset
326 finally {
c2d53bd30ab8 Re-factored artifact API for better integration of background processing.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 26
diff changeset
327 cc.postCall();
c2d53bd30ab8 Re-factored artifact API for better integration of background processing.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 26
diff changeset
328 }
c2d53bd30ab8 Re-factored artifact API for better integration of background processing.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 26
diff changeset
329 }
c2d53bd30ab8 Re-factored artifact API for better integration of background processing.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 26
diff changeset
330
48
41c225c8bd41 Add i18n support via "Accept-Language" HTTP headers.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 47
diff changeset
331 public Document advance(String identifier, Document target, CallMeta callMeta)
32
c2d53bd30ab8 Re-factored artifact API for better integration of background processing.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 26
diff changeset
332 throws ArtifactDatabaseException
c2d53bd30ab8 Re-factored artifact API for better integration of background processing.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 26
diff changeset
333 {
c2d53bd30ab8 Re-factored artifact API for better integration of background processing.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 26
diff changeset
334 // TODO: Handle background tasks
c2d53bd30ab8 Re-factored artifact API for better integration of background processing.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 26
diff changeset
335 PersistentArtifact artifact = backend.getArtifact(identifier);
c2d53bd30ab8 Re-factored artifact API for better integration of background processing.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 26
diff changeset
336
c2d53bd30ab8 Re-factored artifact API for better integration of background processing.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 26
diff changeset
337 if (artifact == null) {
c2d53bd30ab8 Re-factored artifact API for better integration of background processing.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 26
diff changeset
338 throw new ArtifactDatabaseException(NO_SUCH_ARTIFACT);
c2d53bd30ab8 Re-factored artifact API for better integration of background processing.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 26
diff changeset
339 }
c2d53bd30ab8 Re-factored artifact API for better integration of background processing.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 26
diff changeset
340
c2d53bd30ab8 Re-factored artifact API for better integration of background processing.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 26
diff changeset
341 CallContextImpl cc = new CallContextImpl(
48
41c225c8bd41 Add i18n support via "Accept-Language" HTTP headers.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 47
diff changeset
342 artifact, CallContext.STORE, callMeta);
41c225c8bd41 Add i18n support via "Accept-Language" HTTP headers.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 47
diff changeset
343
41c225c8bd41 Add i18n support via "Accept-Language" HTTP headers.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 47
diff changeset
344 try {
41c225c8bd41 Add i18n support via "Accept-Language" HTTP headers.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 47
diff changeset
345 return artifact.getArtifact().advance(target, cc);
41c225c8bd41 Add i18n support via "Accept-Language" HTTP headers.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 47
diff changeset
346 }
41c225c8bd41 Add i18n support via "Accept-Language" HTTP headers.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 47
diff changeset
347 finally {
41c225c8bd41 Add i18n support via "Accept-Language" HTTP headers.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 47
diff changeset
348 cc.postCall();
41c225c8bd41 Add i18n support via "Accept-Language" HTTP headers.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 47
diff changeset
349 }
41c225c8bd41 Add i18n support via "Accept-Language" HTTP headers.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 47
diff changeset
350 }
41c225c8bd41 Add i18n support via "Accept-Language" HTTP headers.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 47
diff changeset
351
41c225c8bd41 Add i18n support via "Accept-Language" HTTP headers.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 47
diff changeset
352 public Document feed(String identifier, Document data, CallMeta callMeta)
41c225c8bd41 Add i18n support via "Accept-Language" HTTP headers.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 47
diff changeset
353 throws ArtifactDatabaseException
41c225c8bd41 Add i18n support via "Accept-Language" HTTP headers.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 47
diff changeset
354 {
41c225c8bd41 Add i18n support via "Accept-Language" HTTP headers.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 47
diff changeset
355 // TODO: Handle background tasks
41c225c8bd41 Add i18n support via "Accept-Language" HTTP headers.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 47
diff changeset
356 PersistentArtifact artifact = backend.getArtifact(identifier);
41c225c8bd41 Add i18n support via "Accept-Language" HTTP headers.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 47
diff changeset
357
41c225c8bd41 Add i18n support via "Accept-Language" HTTP headers.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 47
diff changeset
358 if (artifact == null) {
41c225c8bd41 Add i18n support via "Accept-Language" HTTP headers.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 47
diff changeset
359 throw new ArtifactDatabaseException(NO_SUCH_ARTIFACT);
41c225c8bd41 Add i18n support via "Accept-Language" HTTP headers.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 47
diff changeset
360 }
41c225c8bd41 Add i18n support via "Accept-Language" HTTP headers.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 47
diff changeset
361
41c225c8bd41 Add i18n support via "Accept-Language" HTTP headers.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 47
diff changeset
362 CallContextImpl cc = new CallContextImpl(
41c225c8bd41 Add i18n support via "Accept-Language" HTTP headers.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 47
diff changeset
363 artifact, CallContext.STORE, callMeta);
32
c2d53bd30ab8 Re-factored artifact API for better integration of background processing.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 26
diff changeset
364
c2d53bd30ab8 Re-factored artifact API for better integration of background processing.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 26
diff changeset
365 try {
36
f7d2cd59a0d5 Bugfix done. Now the feed Method works fine
Tim Englich <tim.englich@intevation.de>
parents: 32
diff changeset
366 return artifact.getArtifact().feed(data, cc);
32
c2d53bd30ab8 Re-factored artifact API for better integration of background processing.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 26
diff changeset
367 }
c2d53bd30ab8 Re-factored artifact API for better integration of background processing.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 26
diff changeset
368 finally {
c2d53bd30ab8 Re-factored artifact API for better integration of background processing.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 26
diff changeset
369 cc.postCall();
c2d53bd30ab8 Re-factored artifact API for better integration of background processing.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 26
diff changeset
370 }
c2d53bd30ab8 Re-factored artifact API for better integration of background processing.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 26
diff changeset
371 }
c2d53bd30ab8 Re-factored artifact API for better integration of background processing.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 26
diff changeset
372
48
41c225c8bd41 Add i18n support via "Accept-Language" HTTP headers.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 47
diff changeset
373 public DeferredOutput out(String identifier, Document format, CallMeta callMeta)
32
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374 throws ArtifactDatabaseException
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375 {
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376 // TODO: Handle background tasks
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377 PersistentArtifact artifact = backend.getArtifact(identifier);
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378
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379 if (artifact == null) {
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380 throw new ArtifactDatabaseException(NO_SUCH_ARTIFACT);
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381 }
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382
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383 return new DeferredOutputImpl(artifact, format, callMeta);
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384 }
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385
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386 public String [][] serviceNamesAndDescriptions() {
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387 throw new IllegalArgumentException("Describing services is not implemented yet");
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388 }
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389
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390 public Document process(String service, Document input, CallMeta callMeta) {
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391 throw new IllegalArgumentException("Service processing is not implemented yet");
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392 }
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393 }
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394 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8:
http://dive4elements.wald.intevation.org