Mercurial > dive4elements > framework

annotate artifact-database/src/main/java/de/intevation/artifactdatabase/AbstractCallContext.java @ 389:ea263ee87563

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Added new helper class DateUtils. artifacts/trunk@4436 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Fri, 18 May 2012 09:08:03 +0000
parents 1f51f3c46efe
children f367be55dd35
rev   line source
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1 /*
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2 * Copyright (c) 2010, 2011 by Intevation GmbH
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3 *
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4 * This program is free software under the LGPL (>=v2.1)
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5 * Read the file LGPL.txt coming with the software for details
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6 * or visit http://www.gnu.org/licenses/ if it does not exist.
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7 */
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8 package de.intevation.artifactdatabase;
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9
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10 import org.apache.log4j.Logger;
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11
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12 import java.util.ArrayList;
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13 import java.util.List;
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14 import java.util.Map;
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15 import java.util.HashMap;
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16
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17 import de.intevation.artifacts.ArtifactDatabase;
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18 import de.intevation.artifacts.CallContext;
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19 import de.intevation.artifacts.CallMeta;
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20 import de.intevation.artifacts.DataProvider;
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23 /**
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24 * Abstract class that implements some basic methods of a CallContext.
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25 *
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26 * @author <a href="mailto:sascha.teichmann@intevation.de">Sascha L. Teichmann</a>
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27 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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28 */
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29 public abstract class AbstractCallContext implements CallContext {
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30
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31 Logger logger = Logger.getLogger(AbstractCallContext.class);
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33 /**
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34 * The ArtifactDatabase instance.
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35 */
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36 protected ArtifactDatabaseImpl database;
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37
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38 /**
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39 * The action to be performed after the artifacts or collections calls.
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40 */
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41 protected int action;
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43 /**
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44 * The meta information of the concrete call (preferred languages et. al.)
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45 */
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46 protected CallMeta callMeta;
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47
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48 /**
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49 * Map to act like a clipboard when nesting calls like a proxy artifact.
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50 */
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51 protected Map customValues;
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52
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53 /**
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54 * Map to act like a clipboard when nesting calls like a proxy artifact.
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55 */
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56 protected Map<Object, List<DataProvider>> dataProviders;
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57
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59 /**
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60 * The default constructor of this abstract CallContext.
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61 *
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62 * @param action The action.
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63 * @param callMeta The CallMeta object.
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64 * @param context The global context.
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65 */
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66 public AbstractCallContext(
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67 ArtifactDatabaseImpl artifactDatabase,
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68 int action,
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69 CallMeta callMeta
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70 ) {
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71 this.database = artifactDatabase;
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72 this.action = action;
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73 this.callMeta = callMeta;
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74
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75 database.initCallContext(this);
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76 }
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78
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79 public void postCall() {
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80 database.closeCallContext(this);
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81 }
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83 public abstract void afterCall(int action);
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84
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85 public abstract Long getTimeToLive();
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86
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87 public abstract void afterBackground(int action);
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90 public Object globalContext() {
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91 return database.context;
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92 }
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95 public ArtifactDatabase getDatabase() {
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96 return database;
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97 }
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100 public CallMeta getMeta() {
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101 return callMeta;
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102 }
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105 public Object getContextValue(Object key) {
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106 return customValues != null
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107 ? customValues.get(key)
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108 : null;
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109 }
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110
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111 public Object putContextValue(Object key, Object value) {
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112 if (customValues == null) {
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113 customValues = new HashMap();
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114 }
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115 return customValues.put(key, value);
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116 }
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117
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118 /**
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119 * Get list of DataProviders that registered for given key.
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120 * @return list (empty list if none found, never null).
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121 */
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122 public List<DataProvider> getDataProvider(Object key) {
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123 if (dataProviders != null) {
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124 List<DataProvider> list = dataProviders.get(key);
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125 return list != null
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126 ? list
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127 : java.util.Collections.<DataProvider>emptyList();
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128 }
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129 return java.util.Collections.<DataProvider>emptyList();
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130 }
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131
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132
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133 /**
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134 * Let a DataProvider register itself with given key.
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135 * Multiple DataProvider can register under the same key.
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136 */
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137 public Object registerDataProvider(Object key, DataProvider value) {
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138 List<DataProvider> providers = null;
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139 if (dataProviders == null) {
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140 dataProviders = new HashMap();
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141 providers = new ArrayList<DataProvider>();
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142 providers.add(value);
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143 return dataProviders.put(key, providers);
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144 }
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145 providers = dataProviders.get(key);
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146
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147 if (providers == null) {
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148 providers = new ArrayList<DataProvider>();
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149 }
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150 providers.add(value);
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151 return dataProviders.put(key, providers);
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152 }
219
cabe4c02ab64 Refactored the CallContextImpl - there are two concrete classes for Artifacts and ArtifactCollections now.
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153 }
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154 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org