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.ByTarget;
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19 import com.indexdata.pz2utils4jsf.pazpar2.data.Pazpar2ResponseData;
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20 import com.indexdata.pz2utils4jsf.pazpar2.data.Pazpar2ResponseParser;
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21 import com.indexdata.pz2utils4jsf.pazpar2.data.RecordResponse;
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22 import com.indexdata.pz2utils4jsf.pazpar2.data.SearchResponse;
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23 import com.indexdata.pz2utils4jsf.pazpar2.data.ShowResponse;
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24 import com.indexdata.pz2utils4jsf.pazpar2.data.StatResponse;
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25 import com.indexdata.pz2utils4jsf.pazpar2.data.TermListsResponse;
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26 import com.indexdata.pz2utils4jsf.pazpar2.data.TermResponse;
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27 import com.indexdata.pz2utils4jsf.pazpar2.state.QueryStates;
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28 import com.indexdata.pz2utils4jsf.utils.Utils;
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30 @Named @SessionScoped
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31 public class Pz2Session implements Pz2Interface {
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33 private static Logger logger = Logger.getLogger(Pz2Session.class);
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35 private Map<String,Pazpar2ResponseData> dataObjects = new ConcurrentHashMap<String,Pazpar2ResponseData>();
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36 private QueryStates queryStates = new QueryStates();
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38 private static final long serialVersionUID = 3947514708343320514L;
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39 private com.indexdata.masterkey.pazpar2.client.Pazpar2ClientConfiguration cfg = null;
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40 private com.indexdata.masterkey.pazpar2.client.Pazpar2Client client = null;
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41 private TargetFilter targetFilter = null;
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42 private ResultsPager pager = null;
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44 public Pz2Session () {
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45 logger.info("Instantiating pz2 session object [" + Utils.objectId(this) + "]");
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48 public void init(Pz2Configurator pz2conf) {
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50 logger.info(Utils.objectId(this) + " is configuring itself using the provided " + Utils.objectId(pz2conf));
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52 cfg = new com.indexdata.masterkey.pazpar2.client.Pazpar2ClientConfiguration(pz2conf.getConfig());
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53 client = new com.indexdata.masterkey.pazpar2.client.Pazpar2ClientGeneric(cfg);
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55 } catch (ProxyErrorException e) {
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56 e.printStackTrace();
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57 } catch (IOException ioe) {
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58 ioe.printStackTrace();
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61 logger.warn("Attempt to configure session but it already has a configured client");
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65 public void doSearch(String query) {
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66 setCommandParameter("search",new CommandParameter("query","=",query));
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70 public void doSearch() {
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71 queryStates.hasPendingStateChange("search",false);
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73 setCommandParameter("show",new CommandParameter("start","=",0));
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74 logger.debug(Utils.objectId(this) + " is searching using "+getCommand("search").getParameter("query").getEncodedQueryString());
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75 doCommand("search");
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79 * Refreshes 'show', 'stat', 'termlist', and 'bytarget' data object from pazpar2
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81 * @return Number of activeclients at the time of the 'show' command.
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83 public String update () {
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84 logger.debug("Updating show,stat,termlist,bytarget from pazpar2");
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85 return update("show,stat,termlist,bytarget");
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89 * Refreshes the data objects listed in 'commands' from pazpar2
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92 * @return Number of activeclients at the time of the 'show' command
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94 public String update (String commands) {
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96 handleQueryStateChanges(commands);
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97 logger.debug("Processing request for " + commands);
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98 List<CommandThread> threadList = new ArrayList<CommandThread>();
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99 StringTokenizer tokens = new StringTokenizer(commands,",");
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100 while (tokens.hasMoreElements()) {
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101 threadList.add(new CommandThread(getCommand(tokens.nextToken()),client));
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103 for (CommandThread thread : threadList) {
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106 for (CommandThread thread : threadList) {
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109 } catch (InterruptedException e) {
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110 e.printStackTrace();
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113 for (CommandThread thread : threadList) {
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114 dataObjects.put(thread.getCommand().getName(), new Pazpar2ResponseParser().getObject(thread.getResponse()));
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116 return getActiveClients();
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118 logger.debug("Skipped requests for " + commands + " as there's not yet a query.");
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119 resetDataObjects();
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125 public void setQuery (String query) {
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126 logger.debug("Creating new command parameter for " + query);
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127 setCommandParameter("search",new CommandParameter("query","=",query));
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130 public String getQuery () {
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131 return getCommandParameterValueSimple("search","query",null);
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134 public void setFacet (String facetKey, String term) {
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135 if (term != null && term.length()>0) {
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136 queryStates.getCurrentState().setCommandParameterExpression("search","query",new Expression(facetKey,"=",term),queryStates);
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141 public void setFacetOnQuery (String facetKey, String term) {
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142 String facetExpression = facetKey + "=" + term;
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143 if (term != null && term.length()>0) {
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144 setCommandParameter("search",new CommandParameter("query","=", getQuery() + " and " + facetExpression));
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149 public void removeFacet(String facetKey, String term) {
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150 queryStates.getCurrentState().removeCommandParameterExpression("search","query",new Expression(facetKey,"=",term),queryStates);
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154 public void setTargetFilter (String targetId, String targetName) {
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155 if (hasTargetFilter(new TargetFilter(targetId,targetName))) {
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156 logger.debug("Already using target filter " + this.targetFilter.getFilterExpression());
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158 this.targetFilter = new TargetFilter(targetId,targetName);
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159 setCommandParameter("search",new CommandParameter("filter","=",this.targetFilter.getFilterExpression()));
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164 public TargetFilter getTargetFilter () {
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165 return targetFilter;
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168 public void removeTargetFilter () {
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169 logger.debug("Removing target filter " + targetFilter.getFilterExpression());
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170 this.targetFilter = null;
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171 removeCommandParameter("search","filter");
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175 public boolean hasTargetFilter() {
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176 return targetFilter != null;
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179 public void setSort (String sortOption) {
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180 logger.debug("Setting sort option: " + sortOption);
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181 setCommandParameter("show",new CommandParameter("sort","=",sortOption));
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185 public String getSort () {
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186 return getCommandParameterValue("show","sort","relevance");
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189 public void setPageSize (int perPageOption) {
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190 if (getPageSize()!=perPageOption) {
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191 logger.debug("Setting perpage option to " + perPageOption + " and resetting start page.");
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192 setCommandParameter("show",new CommandParameter("num","=",perPageOption));
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193 setCommandParameter("show",new CommandParameter("start","=",0));
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196 logger.debug("Not updating page size, already is " + perPageOption);
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200 public int getPageSize () {
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201 return getCommandParameterValue("show","num",20);
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204 public void setStart (int start) {
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205 logger.debug("Setting start num to " + start);
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206 setCommandParameter("show", new CommandParameter("start","=",start));
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210 public int getStart() {
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211 return getCommandParameterValue("show","start",0);
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214 public String toggleRecord (String recId) {
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215 if (hasRecord(recId)) {
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216 removeCommand("record");
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217 dataObjects.put("record", new RecordResponse());
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220 return updateRecord(recId);
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224 private String updateRecord(String recId) {
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225 setCommandParameter("record",new CommandParameter("id","=",recId));
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226 return doCommand("record");
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229 public boolean hasRecord (String recId) {
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230 return getCommand("record").hasParameters() && getRecord().getRecId().equals(recId);
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233 public ShowResponse getShow () {
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234 return ((ShowResponse) dataObjects.get("show"));
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237 public StatResponse getStat () {
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238 return ((StatResponse) dataObjects.get("stat"));
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241 public RecordResponse getRecord() {
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242 return ((RecordResponse) dataObjects.get("record"));
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245 public TermListsResponse getTermLists () {
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246 return ((TermListsResponse) dataObjects.get("termlist"));
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249 public List<TermResponse> getFacetTerms (String facet, int count) {
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250 return (getTermLists().getTermList(facet).getTerms(count));
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253 public List<TermResponse> getFacetTerms (String facet) {
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254 return (getTermLists().getTermList(facet).getTerms());
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257 public ByTarget getByTarget() {
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258 return ((ByTarget) dataObjects.get("bytarget"));
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262 public String getCurrentStateKey () {
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263 return queryStates.getCurrentStateKey();
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266 public void setCurrentStateKey(String key) {
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267 logger.debug("************** request to set state key to: [" + key + "]");
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268 queryStates.setCurrentStateKey(key);
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271 public boolean hasErrors () {
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272 if (dataObjects.get("search").isError()) {
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273 logger.info("Error detected in search");
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276 for (String name : dataObjects.keySet()) {
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277 if (dataObjects.get(name).isError()) {
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278 logger.info("Error detected in " + name);
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285 public String getErrorMessages() {
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286 StringBuilder msgs = new StringBuilder("");
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287 for (String name : dataObjects.keySet()) {
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288 if (dataObjects.get(name).isError()) {
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289 msgs.append(name + ": " + dataObjects.get(name).getErrorMessage());
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292 return msgs.toString();
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295 public String getFirstErrorMessage() {
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296 if (dataObjects.get("search").isError()) {
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297 return "Error doing search: " + dataObjects.get("search").getErrorMessage();
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299 for (String name : dataObjects.keySet()) {
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300 if (dataObjects.get(name).isError()) {
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301 return name + ": " + dataObjects.get(name).getErrorMessage();
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309 private boolean hasTargetFilter(TargetFilter targetFilter) {
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310 return hasTargetFilter() && targetFilter.equals(this.targetFilter);
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313 private boolean hasQuery() {
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314 return !(getCommand("search").getParameter("query") == null);
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317 public boolean hasRecords () {
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318 return getStat().getRecords() > 0
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319 && getShow().getHits() != null
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320 && getShow().getHits().size()>0;
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323 public ResultsPager getPager () {
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324 if (pager == null) {
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325 pager = new ResultsPager(this);
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330 public ResultsPager setPager (int pageRange) {
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331 pager = new ResultsPager(this,pageRange);
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335 private void handleQueryStateChanges (String commands) {
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336 if (queryStates.hasPendingStateChange("search")) {
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337 logger.debug("Found pending search change. Doing search before updating " + commands);
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340 if (queryStates.hasPendingStateChange("record") && ! commands.equals("record")) {
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341 logger.debug("Found pending record ID change. Doing record before updating " + commands);
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342 queryStates.hasPendingStateChange("record",false);
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343 if (getCommand("record").hasParameters()) {
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344 updateRecord(getCommand("record").getParameter("id").getSimpleValue());
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346 removeCommand("record");
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347 dataObjects.put("record", new RecordResponse());
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352 private String getActiveClients() {
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353 if (getShow()!=null) {
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354 logger.debug("Active clients: "+getShow().getActiveClients());
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355 return getShow().getActiveClients();
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361 private Pazpar2Command getCommand(String name) {
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362 return queryStates.getCurrentState().getCommand(name);
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365 private void setCommandParameter(String commandName, CommandParameter parameter) {
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366 logger.debug("Setting parameter for " + commandName + ": " + parameter);
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367 queryStates.getCurrentState().setCommandParameter(commandName, parameter, queryStates);
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371 private void removeCommandParameter(String commandName, String parameterName) {
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372 queryStates.getCurrentState().removeCommandParameter(commandName,parameterName,queryStates);
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375 private void removeCommand (String commandName) {
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376 queryStates.getCurrentState().removeCommand(commandName, queryStates);
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379 private String getCommandParameterValue (String commandName, String parameterName, String defaultValue) {
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380 Pazpar2Command command = getCommand(commandName);
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381 if (command != null) {
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382 CommandParameter parameter = command.getParameter(parameterName);
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383 if (parameter != null) {
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384 return parameter.getValueWithExpressions();
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387 return defaultValue;
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390 private String getCommandParameterValueSimple (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.getSimpleValue();
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398 return defaultValue;
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402 private int getCommandParameterValue (String commandName, String parameterName, int defaultValue) {
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403 Pazpar2Command command = getCommand(commandName);
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404 if (command != null) {
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405 CommandParameter parameter = command.getParameter(parameterName);
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406 if (parameter != null) {
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407 return Integer.parseInt(parameter.getSimpleValue());
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410 return defaultValue;
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413 private String doCommand(String commandName) {
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414 Pazpar2Command command = getCommand(commandName);
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415 logger.debug(command.getEncodedQueryString() + ": Results for "+ getCommand("search").getEncodedQueryString());
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416 return update(commandName);
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419 private void resetDataObjects() {
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420 logger.debug("Resetting show,stat,termlist,bytarget,search response objects.");
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421 dataObjects = new ConcurrentHashMap<String,Pazpar2ResponseData>();
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422 dataObjects.put("show", new ShowResponse());
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423 dataObjects.put("stat", new StatResponse());
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424 dataObjects.put("termlist", new TermListsResponse());
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425 dataObjects.put("bytarget", new ByTarget());
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426 dataObjects.put("record", new RecordResponse());
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427 dataObjects.put("search", new SearchResponse());
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