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annotate src/main/java/de/mpiwg/web/SearchBean.java @ 5:5316e79f9a27

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Implementation of search pagination and lazy loading to display the result set of a search.
author "jurzua <jurzua@mpiwg-berlin.mpg.de>"
date Mon, 16 Mar 2015 11:25:36 +0100
parents 7682c04c63a8
children 5610250d021a
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1 package de.mpiwg.web;
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2
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3 import java.sql.SQLException;
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4 import java.util.ArrayList;
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5 import java.util.HashMap;
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6 import java.util.List;
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7 import java.util.Map;
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8
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9 import javax.faces.event.ActionEvent;
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10 import javax.faces.event.ValueChangeEvent;
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11 import javax.faces.model.SelectItem;
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12
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13 import org.apache.commons.lang.StringUtils;
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14 import org.apache.log4j.Logger;
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15 import org.icefaces.ace.event.TextChangeEvent;
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16
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17 import de.mpiwg.gazetteer.bo.LGBranch;
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18 import de.mpiwg.gazetteer.db.DBSection;
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19 import de.mpiwg.gazetteer.utils.DBService;
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20 import de.mpiwg.gazetteer.utils.DataProvider;
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21 import de.mpiwg.web.jsf.DataPaginator;
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22
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23 public class SearchBean extends AbstractBean{
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25 private static String GOTO_SEARCH_PAGE = "searchPage";
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26
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27 private static Logger logger = Logger.getLogger(SearchBean.class);
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28
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29 private String term;
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30 private List<SelectItem> sectionSuggestion;
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31 private List<DBSection> completeSectionList;
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32 private List<DBSection> currentSectionList;
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33 private String message;
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34 private Map<Long, List<LGBranch>> branchesMap;
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36 private transient DataPaginator advancedPaginator = new DataPaginator();
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37
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38 public void changeSectionName(TextChangeEvent event){
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39 //logger.debug("changeSectionName");
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40 //logger.debug("key" + event.getKeyCode());
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41
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42 String term = event.getNewValue().toString();
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43 this.sectionSuggestion = new ArrayList<SelectItem>();
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44 if(!term.contains(",")){
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45 try {
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46 List<String> list = DBService.suggestSectionName(term);
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47 for(String s : list){
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48 this.sectionSuggestion.add(new SelectItem(s));
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49 }
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50 } catch (SQLException e) {
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51 internalError(e);
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52 }
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53 }
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54 }
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55
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56 public void changeSectionSearch(ValueChangeEvent event){
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57 this.term = (String)event.getNewValue();
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58 this.search();
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59 }
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60
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61 public void listenerSearch(ActionEvent event){
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62 this.search();
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63 }
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64
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65
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66 private void search(){
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67 if(StringUtils.isNotEmpty(this.term)){
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68 this.loadBranches();
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69 try {
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70 List<String> terms = splitTerms();
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71 this.completeSectionList = DBService.searchSection(terms);
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72 if(completeSectionList.size() > 0){
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73 this.message = completeSectionList.size() + " item(s) found for the term(s): " + this.term;
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74 this.advancedPaginator.setCurrentPage(0);
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75 this.advancedPaginator.resetNumberOfPages(completeSectionList.size());
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76 this.updateCurrentSections();
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77 }else{
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78 this.message = "No items found for the term(s): " + this.term;
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79 }
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80
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81 } catch (Exception e) {
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82 internalError(e);
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83 }
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84 }
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85 }
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86
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87 private void loadBranches(){
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88 this.branchesMap = new HashMap<Long, List<LGBranch>>();
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89 List<LGBranch> list = DataProvider.getInstance().getBranches(getSessionBean().getUser().getId());
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90 for(LGBranch branch : list){
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91 branch.loadTransientData();
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92 if(this.branchesMap.get(branch.getSectionId()) == null){
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93 this.branchesMap.put(branch.getSectionId(), new ArrayList<LGBranch>());
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94 }
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95 this.branchesMap.get(branch.getSectionId()).add(branch);
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96 }
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97 }
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98
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99
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100 private void updateCurrentSections() {
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101 this.advancedPaginator.initCount();
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102 int startRecord = this.advancedPaginator.getCurrentPage()
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103 * this.advancedPaginator.getItemsPerPage();
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104 if((this.advancedPaginator.getCurrentPage() + 1) == this.advancedPaginator.getNumberOfPages()){
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105 int mod = this.completeSectionList.size() % advancedPaginator.getItemsPerPage();
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106 if(mod == 0){
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107 this.currentSectionList = completeSectionList.subList(startRecord, startRecord + this.advancedPaginator.getItemsPerPage());
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108 }else{
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109 this.currentSectionList = completeSectionList.subList(startRecord, startRecord + mod);
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110 }
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111
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112 }else{
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113 this.currentSectionList = completeSectionList.subList(startRecord, startRecord + this.advancedPaginator.getItemsPerPage());
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114 }
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115
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116 for(DBSection section : this.currentSectionList){
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117 try {
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118 section.setBook(DBService.getBook(section.getBookId()));
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119 } catch (SQLException e) {
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120 e.printStackTrace();
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121 }
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122 section.setBranches(this.branchesMap.get(section.getId()));
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123 }
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124 }
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125
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126 public String advancedFirst() {
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127 this.advancedPaginator.first();
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128 this.updateCurrentSections();
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129 return GOTO_SEARCH_PAGE;
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130 }
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131
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132 public String advancedLast() {
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133 this.advancedPaginator.last();
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134 this.updateCurrentSections();
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135 return GOTO_SEARCH_PAGE;
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136 }
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137
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138 public String advancedFastForward() {
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139 this.advancedPaginator.fastForward();
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140 this.updateCurrentSections();
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141 return GOTO_SEARCH_PAGE;
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142 }
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143
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144 public String advancedFastRewind() {
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145 this.advancedPaginator.fastRewind();
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146 this.updateCurrentSections();
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147 return GOTO_SEARCH_PAGE;
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148 }
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149
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150 public String advancedPrevious() {
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151 this.advancedPaginator.previous();
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152 this.updateCurrentSections();
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153 return GOTO_SEARCH_PAGE;
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154 }
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155
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156 public String advancedNext() {
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157 this.advancedPaginator.next();
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158 this.updateCurrentSections();
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159 return GOTO_SEARCH_PAGE;
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160 }
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161
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162 /*
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163 public void reset(){
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164 this.completeSectionList = new ArrayList<DBSection>();
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165 this.currentSectionList = new ArrayList<DBSection>();
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166 this.message = new String();
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167 }*/
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168
0
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169 private List<String> splitTerms(){
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170 List<String> rs = new ArrayList<String>();
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171 String[] array = this.term.split(",");
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172
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173 for(String tmp : array){
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174 tmp = tmp.replace(" ", "");
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175 if(StringUtils.isNotEmpty(tmp)){
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176 rs.add(tmp);
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177 }
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178 }
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179 return rs;
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180 }
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181
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182 public String getTerm() {
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183 return term;
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184 }
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185
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186 public void setTerm(String term) {
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187 this.term = term;
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188 }
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189
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190 public List<SelectItem> getSectionSuggestion() {
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191 return sectionSuggestion;
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192 }
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193
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194 public void setSectionSuggestion(List<SelectItem> sectionSuggestion) {
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195 this.sectionSuggestion = sectionSuggestion;
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196 }
5
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197
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198
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199
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200 public List<DBSection> getCompleteSectionList() {
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201 return completeSectionList;
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202 }
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203
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204 public void setCompleteSectionList(List<DBSection> completeSectionList) {
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205 this.completeSectionList = completeSectionList;
0
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206 }
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207
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208 public List<DBSection> getCurrentSectionList() {
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209 return currentSectionList;
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210 }
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211
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212 public void setCurrentSectionList(List<DBSection> currentSectionList) {
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213 this.currentSectionList = currentSectionList;
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214 }
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215
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216 public DataPaginator getAdvancedPaginator() {
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217 return advancedPaginator;
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218 }
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219
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220 public void setAdvancedPaginator(DataPaginator advancedPaginator) {
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221 this.advancedPaginator = advancedPaginator;
0
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222 }
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223
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224 public String getMessage() {
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225 return message;
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226 }
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227 }