1 package com.indexdata.pz2utils4jsf.pazpar2;
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3 import java.io.Serializable;
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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.StringTokenizer;
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8 import javax.annotation.PostConstruct;
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9 import javax.enterprise.context.SessionScoped;
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10 import javax.enterprise.inject.Alternative;
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11 import javax.inject.Inject;
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12 import javax.inject.Named;
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14 import org.apache.log4j.Logger;
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16 import com.indexdata.pz2utils4jsf.config.ConfigurationReader;
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17 import com.indexdata.pz2utils4jsf.controls.ResultsPager;
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18 import com.indexdata.pz2utils4jsf.errors.ConfigurationError;
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19 import com.indexdata.pz2utils4jsf.errors.ConfigurationException;
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20 import com.indexdata.pz2utils4jsf.errors.ErrorHelper;
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21 import com.indexdata.pz2utils4jsf.errors.ErrorInterface;
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22 import com.indexdata.pz2utils4jsf.pazpar2.commands.CommandParameter;
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23 import com.indexdata.pz2utils4jsf.pazpar2.commands.Pazpar2Commands;
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24 import com.indexdata.pz2utils4jsf.pazpar2.data.Pazpar2ResponseData;
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25 import com.indexdata.pz2utils4jsf.pazpar2.data.Pazpar2ResponseParser;
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26 import com.indexdata.pz2utils4jsf.pazpar2.data.Pazpar2Responses;
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27 import com.indexdata.pz2utils4jsf.pazpar2.data.RecordResponse;
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28 import com.indexdata.pz2utils4jsf.pazpar2.state.StateListener;
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29 import com.indexdata.pz2utils4jsf.pazpar2.state.StateManager;
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30 import com.indexdata.pz2utils4jsf.utils.Utils;
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32 @Named("pz2") @SessionScoped @Alternative
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33 public class Pz2Bean implements Pz2Interface, StateListener, Serializable {
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35 private static final long serialVersionUID = 3440277287081557861L;
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36 private static Logger logger = Logger.getLogger(Pz2Bean.class);
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38 protected SearchClient searchClient = null;
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40 @Inject ConfigurationReader configurator;
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41 @Inject StateManager stateMgr;
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42 @Inject Pazpar2Commands pzreq;
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43 @Inject Pazpar2Responses pzresp;
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45 protected ResultsPager pager = null;
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47 protected List<ErrorInterface> configurationErrors = null;
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48 protected ErrorHelper errorHelper = null;
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51 logger.info("Instantiating pz2 bean [" + Utils.objectId(this) + "]");
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55 public void postConstruct() {
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56 logger.debug("in start of Pz2Bean post-construct configurator is " + configurator);
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57 logger.debug(Utils.objectId(this) + " will instantiate a Pz2Client next.");
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58 searchClient = new Pz2Client();
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59 logger.info("Using [" + Utils.objectId(searchClient) + "] configured by ["
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60 + Utils.objectId(configurator) + "]" );
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61 configureClient(searchClient,configurator);
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62 stateMgr.addStateListener(this);
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65 public void configureClient(SearchClient searchClient, ConfigurationReader configReader) {
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66 configurationErrors = new ArrayList<ErrorInterface>();
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67 errorHelper = new ErrorHelper(configReader);
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68 logger.debug(Utils.objectId(this) + " will configure search client for the session");
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70 searchClient.configure(configReader);
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71 // At the time of writing this search client is injected using Weld.
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72 // However, the client is used for asynchronously sending off requests
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73 // to the server AND propagation of context to threads is currently
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74 // not supported. Trying to do so throws a WELD-001303 error.
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75 // To avoid that, a context free client is cloned from the context
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77 // If propagation to threads gets supported, the cloning can go.
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79 // Commented as I'm trying with regular instantiation instead
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80 // this.searchClient = searchClient.cloneMe();
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81 } catch (ConfigurationException e) {
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82 configurationErrors.add(new ConfigurationError("Search Client","Configuration",e.getMessage(),new ErrorHelper(configReader)));
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84 logger.info(configReader.document());
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89 public void doSearch(String query) {
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90 pzreq.getSearch().setParameter(new CommandParameter("query","=",query));
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94 public void doSearch() {
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95 stateMgr.hasPendingStateChange("search",false);
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97 // TODO: avoid state proliferation here:
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98 pzreq.getRecord().removeParameters();
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99 pzreq.getShow().setParameter(new CommandParameter("start","=",0));
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100 logger.debug(Utils.objectId(this) + " is searching using "+pzreq.getCommandReadOnly("search").getUrlEncodedParameterValue("query"));
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101 doCommand("search");
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105 * Refreshes 'show', 'stat', 'termlist', and 'bytarget' data object from pazpar2
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107 * @return Number of activeclients at the time of the 'show' command.
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109 public String update () {
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110 logger.debug("Updating show,stat,termlist,bytarget from pazpar2");
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111 return update("show,stat,termlist,bytarget");
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115 * Refreshes the data objects listed in 'commands' from pazpar2
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118 * @return Number of activeclients at the time of the 'show' command
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120 public String update (String commands) {
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121 if (! hasConfigurationErrors()) {
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123 handleQueryStateChanges(commands);
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124 logger.debug("Processing request for " + commands);
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125 List<CommandThread> threadList = new ArrayList<CommandThread>();
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126 StringTokenizer tokens = new StringTokenizer(commands,",");
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127 while (tokens.hasMoreElements()) {
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128 threadList.add(new CommandThread(pzreq.getCommandReadOnly(tokens.nextToken()),searchClient));
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130 for (CommandThread thread : threadList) {
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133 for (CommandThread thread : threadList) {
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136 } catch (InterruptedException e) {
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137 e.printStackTrace();
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140 for (CommandThread thread : threadList) {
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141 String commandName = thread.getCommand().getName();
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142 String response = thread.getResponse();
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143 logger.debug("Response was: " + response);
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144 Pazpar2ResponseData responseObject = Pazpar2ResponseParser.getParser().getDataObject(response);
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145 pzresp.put(commandName, responseObject);
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147 if (commands.equals("record")) {
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148 logger.debug("Record: Active clients: "+pzresp.getRecord().getActiveClients());
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149 return pzresp.getRecord().getActiveClients();
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151 return pzresp.getActiveClients();
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154 logger.debug("Skipped requests for " + commands + " as there's not yet a query.");
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159 logger.error("Did not attempt to execute query since there are configuration errors.");
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165 public String toggleRecord (String recId) {
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166 if (hasRecord(recId)) {
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167 pzreq.getRecord().removeParameters();
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168 pzresp.put("record", new RecordResponse());
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171 pzreq.getRecord().setId(recId);
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172 return doCommand("record");
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177 public boolean hasRecord (String recId) {
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178 return pzreq.getCommandReadOnly("record").hasParameters() && pzresp.getRecord().getRecId().equals(recId);
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181 public String getCurrentStateKey () {
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182 return stateMgr.getCurrentState().getKey();
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185 public void setCurrentStateKey(String key) {
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186 stateMgr.setCurrentStateKey(key);
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189 public boolean hasConfigurationErrors () {
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190 return (configurationErrors.size()>0);
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193 public boolean hasCommandErrors () {
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194 return pzresp.hasApplicationError();
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198 * Returns true if application error found in any response data objects
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200 public boolean hasErrors () {
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201 return hasConfigurationErrors() || hasCommandErrors();
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204 public List<ErrorInterface> getConfigurationErrors() {
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205 return configurationErrors;
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209 protected boolean hasQuery() {
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210 return pzreq.getCommandReadOnly("search").hasParameterSet("query");
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214 public ResultsPager getPager () {
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215 if (pager == null) {
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216 pager = new ResultsPager(pzresp);
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221 public ResultsPager setPager (int pageRange) {
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222 pager = new ResultsPager(pzresp,pageRange,pzreq);
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226 protected ErrorHelper getTroubleshooter() {
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227 return errorHelper;
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230 protected void handleQueryStateChanges (String commands) {
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231 if (stateMgr.hasPendingStateChange("search") && hasQuery()) {
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232 logger.debug("Found pending search change. Doing search before updating " + commands);
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235 if (stateMgr.hasPendingStateChange("record") && ! commands.equals("record")) {
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236 logger.debug("Found pending record ID change. Doing record before updating " + commands);
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237 stateMgr.hasPendingStateChange("record",false);
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238 if (pzreq.getCommandReadOnly("record").hasParameters()) {
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241 pzresp.put("record", new RecordResponse());
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246 protected String doCommand(String commandName) {
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247 logger.debug(pzreq.getCommandReadOnly(commandName).getEncodedQueryString() + ": Results for "+ pzreq.getCommandReadOnly("search").getEncodedQueryString());
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248 return update(commandName);
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252 public void stateUpdated(String commandName) {
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253 logger.debug("State change reported for [" + commandName + "]");
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254 if (commandName.equals("show")) {
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255 logger.debug("Updating show");
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256 update(commandName);
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