1 package com.indexdata.pz2utils4jsf.pazpar2;
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3 import java.io.IOException;
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4 import java.util.ArrayList;
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5 import java.util.List;
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6 import java.util.Map;
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7 import java.util.StringTokenizer;
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8 import java.util.concurrent.ConcurrentHashMap;
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10 import javax.enterprise.context.SessionScoped;
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11 import javax.inject.Named;
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13 import org.apache.log4j.Logger;
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15 import com.indexdata.masterkey.pazpar2.client.exceptions.ProxyErrorException;
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16 import com.indexdata.pz2utils4jsf.config.Pz2Configurator;
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17 import com.indexdata.pz2utils4jsf.controls.ResultsPager;
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18 import com.indexdata.pz2utils4jsf.pazpar2.data.ApplicationError;
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19 import com.indexdata.pz2utils4jsf.pazpar2.data.ByTarget;
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20 import com.indexdata.pz2utils4jsf.pazpar2.data.Pazpar2ResponseData;
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21 import com.indexdata.pz2utils4jsf.pazpar2.data.Pazpar2ResponseParser;
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22 import com.indexdata.pz2utils4jsf.pazpar2.data.RecordResponse;
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23 import com.indexdata.pz2utils4jsf.pazpar2.data.SearchResponse;
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24 import com.indexdata.pz2utils4jsf.pazpar2.data.ShowResponse;
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25 import com.indexdata.pz2utils4jsf.pazpar2.data.StatResponse;
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26 import com.indexdata.pz2utils4jsf.pazpar2.data.TermListsResponse;
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27 import com.indexdata.pz2utils4jsf.pazpar2.data.TermResponse;
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28 import com.indexdata.pz2utils4jsf.pazpar2.state.QueryStates;
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29 import com.indexdata.pz2utils4jsf.utils.Utils;
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31 @Named @SessionScoped
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32 public class Pz2Session implements Pz2Interface {
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34 private static Logger logger = Logger.getLogger(Pz2Session.class);
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36 private Map<String,Pazpar2ResponseData> dataObjects = new ConcurrentHashMap<String,Pazpar2ResponseData>();
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37 private QueryStates queryStates = new QueryStates();
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39 private static final long serialVersionUID = 3947514708343320514L;
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40 private com.indexdata.masterkey.pazpar2.client.Pazpar2ClientConfiguration cfg = null;
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41 private com.indexdata.masterkey.pazpar2.client.Pazpar2Client client = null;
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42 private TargetFilter targetFilter = null;
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43 private ResultsPager pager = null;
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44 private ApplicationTroubleshooter errorHelper = null;
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46 public Pz2Session () {
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47 logger.info("Instantiating pz2 session object [" + Utils.objectId(this) + "]");
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50 public void init(Pz2Configurator pz2conf) {
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52 logger.info(Utils.objectId(this) + " is configuring itself using the provided " + Utils.objectId(pz2conf));
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54 cfg = new com.indexdata.masterkey.pazpar2.client.Pazpar2ClientConfiguration(pz2conf.getConfig());
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55 client = new com.indexdata.masterkey.pazpar2.client.Pazpar2ClientGeneric(cfg);
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56 errorHelper = new ApplicationTroubleshooter(pz2conf);
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58 } catch (ProxyErrorException e) {
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59 e.printStackTrace();
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60 } catch (IOException ioe) {
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61 ioe.printStackTrace();
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64 logger.warn("Attempt to configure session but it already has a configured client");
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68 public void doSearch(String query) {
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69 setCommandParameter("search",new CommandParameter("query","=",query));
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73 public void doSearch() {
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74 queryStates.hasPendingStateChange("search",false);
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76 setCommandParameter("show",new CommandParameter("start","=",0));
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77 logger.debug(Utils.objectId(this) + " is searching using "+getCommand("search").getParameter("query").getEncodedQueryString());
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78 doCommand("search");
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82 * Refreshes 'show', 'stat', 'termlist', and 'bytarget' data object from pazpar2
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84 * @return Number of activeclients at the time of the 'show' command.
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86 public String update () {
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87 logger.debug("Updating show,stat,termlist,bytarget from pazpar2");
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88 return update("show,stat,termlist,bytarget");
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92 * Refreshes the data objects listed in 'commands' from pazpar2
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95 * @return Number of activeclients at the time of the 'show' command
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97 public String update (String commands) {
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99 handleQueryStateChanges(commands);
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100 logger.debug("Processing request for " + commands);
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101 List<CommandThread> threadList = new ArrayList<CommandThread>();
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102 StringTokenizer tokens = new StringTokenizer(commands,",");
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103 while (tokens.hasMoreElements()) {
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104 threadList.add(new CommandThread(getCommand(tokens.nextToken()),client));
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106 for (CommandThread thread : threadList) {
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109 for (CommandThread thread : threadList) {
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112 } catch (InterruptedException e) {
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113 e.printStackTrace();
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116 for (CommandThread thread : threadList) {
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117 String commandName = thread.getCommand().getName();
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118 Pazpar2ResponseData responseObject = Pazpar2ResponseParser.getParser().getDataObject(thread.getResponse());
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119 dataObjects.put(commandName, responseObject);
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121 return getActiveClients();
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123 logger.debug("Skipped requests for " + commands + " as there's not yet a query.");
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124 resetDataObjects();
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130 public void setQuery (String query) {
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131 logger.debug("Creating new command parameter for " + query);
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132 setCommandParameter("search",new CommandParameter("query","=",query));
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135 public String getQuery () {
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136 return getCommandParameterValueSimple("search","query",null);
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139 public void setFacet (String facetKey, String term) {
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140 if (term != null && term.length()>0) {
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141 queryStates.getCurrentState().setCommandParameterExpression("search","query",new Expression(facetKey,"=",term),queryStates);
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146 public void setFacetOnQuery (String facetKey, String term) {
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147 String facetExpression = facetKey + "=" + term;
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148 if (term != null && term.length()>0) {
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149 setCommandParameter("search",new CommandParameter("query","=", getQuery() + " and " + facetExpression));
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154 public void removeFacet(String facetKey, String term) {
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155 queryStates.getCurrentState().removeCommandParameterExpression("search","query",new Expression(facetKey,"=",term),queryStates);
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159 public void setTargetFilter (String targetId, String targetName) {
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160 if (hasTargetFilter(new TargetFilter(targetId,targetName))) {
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161 logger.debug("Already using target filter " + this.targetFilter.getFilterExpression());
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163 this.targetFilter = new TargetFilter(targetId,targetName);
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164 setCommandParameter("search",new CommandParameter("filter","=",this.targetFilter.getFilterExpression()));
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169 public TargetFilter getTargetFilter () {
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170 return targetFilter;
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173 public void removeTargetFilter () {
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174 logger.debug("Removing target filter " + targetFilter.getFilterExpression());
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175 this.targetFilter = null;
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176 removeCommandParameter("search","filter");
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180 public boolean hasTargetFilter() {
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181 return targetFilter != null;
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184 public void setSort (String sortOption) {
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185 logger.debug("Setting sort option: " + sortOption);
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186 setCommandParameter("show",new CommandParameter("sort","=",sortOption));
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190 public String getSort () {
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191 return getCommandParameterValue("show","sort","relevance");
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194 public void setPageSize (int perPageOption) {
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195 if (getPageSize()!=perPageOption) {
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196 logger.debug("Setting perpage option to " + perPageOption + " and resetting start page.");
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197 setCommandParameter("show",new CommandParameter("num","=",perPageOption));
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198 setCommandParameter("show",new CommandParameter("start","=",0));
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201 logger.debug("Not updating page size, already is " + perPageOption);
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205 public int getPageSize () {
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206 return getCommandParameterValue("show","num",20);
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209 public void setStart (int start) {
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210 logger.debug("Setting start num to " + start);
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211 setCommandParameter("show", new CommandParameter("start","=",start));
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215 public int getStart() {
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216 return getCommandParameterValue("show","start",0);
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219 public String toggleRecord (String recId) {
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220 if (hasRecord(recId)) {
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221 removeCommand("record");
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222 dataObjects.put("record", new RecordResponse());
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225 return updateRecord(recId);
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229 private String updateRecord(String recId) {
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230 setCommandParameter("record",new CommandParameter("id","=",recId));
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231 return doCommand("record");
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234 public boolean hasRecord (String recId) {
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235 return getCommand("record").hasParameters() && getRecord().getRecId().equals(recId);
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238 public ShowResponse getShow () {
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239 return ((ShowResponse) dataObjects.get("show"));
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242 public StatResponse getStat () {
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243 return ((StatResponse) dataObjects.get("stat"));
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246 public RecordResponse getRecord() {
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247 return ((RecordResponse) dataObjects.get("record"));
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250 public TermListsResponse getTermLists () {
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251 return ((TermListsResponse) dataObjects.get("termlist"));
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254 public List<TermResponse> getFacetTerms (String facet, int count) {
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255 return (getTermLists().getTermList(facet).getTerms(count));
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258 public List<TermResponse> getFacetTerms (String facet) {
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259 return (getTermLists().getTermList(facet).getTerms());
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262 public ByTarget getByTarget() {
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263 return ((ByTarget) dataObjects.get("bytarget"));
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267 public String getCurrentStateKey () {
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268 return queryStates.getCurrentStateKey();
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271 public void setCurrentStateKey(String key) {
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272 logger.debug("************** request to set state key to: [" + key + "]");
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273 queryStates.setCurrentStateKey(key);
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277 * Returns true if application error found in any response data objects
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279 public boolean hasErrors () {
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280 if (dataObjects.get("search").hasApplicationError()) {
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281 logger.info("Error detected in search");
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284 for (String name : dataObjects.keySet()) {
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285 if (dataObjects.get(name).hasApplicationError()) {
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286 logger.info("Error detected in " + name);
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295 * Returns a search command error, if any, otherwise the first
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296 * error found for an arbitrary command, if any, otherwise
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297 * an empty dummy error.
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299 public ApplicationError getOneError() {
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300 ApplicationError error = new ApplicationError();
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301 if (dataObjects.get("search").hasApplicationError()) {
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302 error = dataObjects.get("search").getApplicationError();
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304 for (String name : dataObjects.keySet()) {
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305 if (dataObjects.get(name).hasApplicationError()) {
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306 error = dataObjects.get(name).getApplicationError();
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311 error.setTroubleshooter(errorHelper);
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316 private boolean hasTargetFilter(TargetFilter targetFilter) {
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317 return hasTargetFilter() && targetFilter.equals(this.targetFilter);
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320 private boolean hasQuery() {
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321 return !(getCommand("search").getParameter("query") == null);
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324 public boolean hasRecords () {
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325 return getStat().getRecords() > 0
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326 && getShow().getHits() != null
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327 && getShow().getHits().size()>0;
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330 public ResultsPager getPager () {
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331 if (pager == null) {
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332 pager = new ResultsPager(this);
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337 public ResultsPager setPager (int pageRange) {
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338 pager = new ResultsPager(this,pageRange);
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342 protected ApplicationTroubleshooter getTroubleshooter() {
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343 return errorHelper;
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346 private void handleQueryStateChanges (String commands) {
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347 if (queryStates.hasPendingStateChange("search")) {
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348 logger.debug("Found pending search change. Doing search before updating " + commands);
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351 if (queryStates.hasPendingStateChange("record") && ! commands.equals("record")) {
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352 logger.debug("Found pending record ID change. Doing record before updating " + commands);
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353 queryStates.hasPendingStateChange("record",false);
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354 if (getCommand("record").hasParameters()) {
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355 updateRecord(getCommand("record").getParameter("id").getSimpleValue());
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357 removeCommand("record");
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358 dataObjects.put("record", new RecordResponse());
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363 private String getActiveClients() {
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364 if (getShow()!=null) {
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365 logger.debug("Active clients: "+getShow().getActiveClients());
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366 return getShow().getActiveClients();
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372 private Pazpar2Command getCommand(String name) {
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373 return queryStates.getCurrentState().getCommand(name);
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376 private void setCommandParameter(String commandName, CommandParameter parameter) {
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377 logger.debug("Setting parameter for " + commandName + ": " + parameter);
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378 queryStates.getCurrentState().setCommandParameter(commandName, parameter, queryStates);
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382 private void removeCommandParameter(String commandName, String parameterName) {
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383 queryStates.getCurrentState().removeCommandParameter(commandName,parameterName,queryStates);
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386 private void removeCommand (String commandName) {
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387 queryStates.getCurrentState().removeCommand(commandName, queryStates);
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390 private String getCommandParameterValue (String commandName, String parameterName, String defaultValue) {
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391 Pazpar2Command command = getCommand(commandName);
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392 if (command != null) {
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393 CommandParameter parameter = command.getParameter(parameterName);
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394 if (parameter != null) {
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395 return parameter.getValueWithExpressions();
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398 return defaultValue;
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401 private String getCommandParameterValueSimple (String commandName, String parameterName, String defaultValue) {
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402 Pazpar2Command command = getCommand(commandName);
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403 if (command != null) {
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404 CommandParameter parameter = command.getParameter(parameterName);
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405 if (parameter != null) {
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406 return parameter.getSimpleValue();
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409 return defaultValue;
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413 private int getCommandParameterValue (String commandName, String parameterName, int defaultValue) {
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414 Pazpar2Command command = getCommand(commandName);
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415 if (command != null) {
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416 CommandParameter parameter = command.getParameter(parameterName);
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417 if (parameter != null) {
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418 return Integer.parseInt(parameter.getSimpleValue());
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421 return defaultValue;
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424 private String doCommand(String commandName) {
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425 Pazpar2Command command = getCommand(commandName);
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426 logger.debug(command.getEncodedQueryString() + ": Results for "+ getCommand("search").getEncodedQueryString());
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427 return update(commandName);
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430 private void resetDataObjects() {
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431 logger.debug("Resetting show,stat,termlist,bytarget,search response objects.");
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432 dataObjects = new ConcurrentHashMap<String,Pazpar2ResponseData>();
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433 dataObjects.put("show", new ShowResponse());
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434 dataObjects.put("stat", new StatResponse());
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435 dataObjects.put("termlist", new TermListsResponse());
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436 dataObjects.put("bytarget", new ByTarget());
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437 dataObjects.put("record", new RecordResponse());
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438 dataObjects.put("search", new SearchResponse());
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