+package com.indexdata.pz2utils4jsf.pazpar2;\r
+\r
+import java.io.Serializable;\r
+import java.util.ArrayList;\r
+import java.util.List;\r
+import java.util.Map;\r
+import java.util.StringTokenizer;\r
+import java.util.concurrent.ConcurrentHashMap;\r
+\r
+import org.apache.log4j.Logger;\r
+\r
+import com.indexdata.pz2utils4jsf.controls.ResultsPager;\r
+import com.indexdata.pz2utils4jsf.pazpar2.CommandParameter;\r
+import com.indexdata.pz2utils4jsf.pazpar2.CommandThread;\r
+import com.indexdata.pz2utils4jsf.pazpar2.Expression;\r
+import com.indexdata.pz2utils4jsf.pazpar2.Pazpar2Command;\r
+import com.indexdata.pz2utils4jsf.pazpar2.Pz2Interface;\r
+import com.indexdata.pz2utils4jsf.pazpar2.Pz2Session;\r
+import com.indexdata.pz2utils4jsf.pazpar2.TargetFilter;\r
+import com.indexdata.masterkey.pazpar2.client.Pazpar2Client;\r
+import com.indexdata.masterkey.pazpar2.client.Pazpar2ClientConfiguration;\r
+import com.indexdata.masterkey.pazpar2.client.Pazpar2ClientGeneric;\r
+import com.indexdata.masterkey.pazpar2.client.exceptions.ProxyErrorException;\r
+import com.indexdata.pz2utils4jsf.config.JsfdemoPazpar2ClientConfiguration;\r
+import com.indexdata.pz2utils4jsf.pazpar2.data.ByTarget;\r
+import com.indexdata.pz2utils4jsf.pazpar2.data.Pazpar2ResponseData;\r
+import com.indexdata.pz2utils4jsf.pazpar2.data.Pazpar2ResponseParser;\r
+import com.indexdata.pz2utils4jsf.pazpar2.data.RecordResponse;\r
+import com.indexdata.pz2utils4jsf.pazpar2.data.ShowResponse;\r
+import com.indexdata.pz2utils4jsf.pazpar2.data.StatResponse;\r
+import com.indexdata.pz2utils4jsf.pazpar2.data.TermListsResponse;\r
+import com.indexdata.pz2utils4jsf.pazpar2.data.TermResponse;\r
+import com.indexdata.pz2utils4jsf.pazpar2.state.QueryStates;\r
+\r
+public class Pz2Session implements Serializable, Pz2Interface {\r
+ \r
+ private static Logger logger = Logger.getLogger(Pz2Session.class);\r
+ \r
+ private Map<String,Pazpar2ResponseData> dataObjects = new ConcurrentHashMap<String,Pazpar2ResponseData>();\r
+ private QueryStates queryStates = new QueryStates();\r
+ \r
+ private static final long serialVersionUID = 3947514708343320514L; \r
+ private Pazpar2ClientConfiguration cfg = null;\r
+ private Pazpar2Client client = null; \r
+ private TargetFilter targetFilter = null; \r
+ private ResultsPager pager = null; \r
+\r
+ public Pz2Session () {\r
+ logger.debug("Instantiating pz2"); \r
+ try {\r
+ cfg = new Pazpar2ClientConfiguration(new JsfdemoPazpar2ClientConfiguration().getModuleConfiguration());\r
+ client = new Pazpar2ClientGeneric(cfg);\r
+ resetDataObjects();\r
+ } catch (ProxyErrorException e) {\r
+ e.printStackTrace();\r
+ } \r
+ }\r
+\r
+ public void doSearch(String query) {\r
+ setCommandParameter("search",new CommandParameter("query","=",query)); \r
+ doSearch();\r
+ }\r
+\r
+ public void doSearch() { \r
+ queryStates.hasPendingStateChange("search",false);\r
+ resetDataObjects();\r
+ setCommandParameter("show",new CommandParameter("start","=",0)); \r
+ logger.info("Searching using "+getCommand("search").getParameter("query").getEncodedQueryString());\r
+ doCommand("search"); \r
+ }\r
+ \r
+ /**\r
+ * Refreshes 'show', 'stat', 'termlist', and 'bytarget' data object from pazpar2\r
+ * \r
+ * @return Number of activeclients at the time of the 'show' command.\r
+ */\r
+ public String update () {\r
+ logger.info("Updating show,stat,termlist, and bytarget data from pazpar2");\r
+ return update("show,stat,termlist,bytarget");\r
+ }\r
+ \r
+ /**\r
+ * Refreshes the data objects listed in 'commands' from pazpar2\r
+ * \r
+ * @param commands\r
+ * @return Number of activeclients at the time of the 'show' command\r
+ */\r
+ public String update (String commands) {\r
+ if (hasQuery()) {\r
+ handleQueryStateChanges(commands);\r
+ logger.debug("Processing request for " + commands); \r
+ List<CommandThread> threadList = new ArrayList<CommandThread>();\r
+ StringTokenizer tokens = new StringTokenizer(commands,",");\r
+ while (tokens.hasMoreElements()) {\r
+ threadList.add(new CommandThread(getCommand(tokens.nextToken()),client)); \r
+ }\r
+ for (CommandThread thread : threadList) {\r
+ thread.start();\r
+ }\r
+ for (CommandThread thread : threadList) {\r
+ try {\r
+ thread.join();\r
+ } catch (InterruptedException e) {\r
+ e.printStackTrace();\r
+ }\r
+ }\r
+ for (CommandThread thread : threadList) {\r
+ if (!thread.getCommand().getName().equals("search")) {\r
+ dataObjects.put(thread.getCommand().getName(), new Pazpar2ResponseParser().getObject(thread.getResponse()));\r
+ }\r
+ }\r
+ return getActiveClients();\r
+ } else {\r
+ logger.info("Skipped requests for " + commands + " as there's not yet a query."); \r
+ resetDataObjects();\r
+ return "0";\r
+ }\r
+ \r
+ }\r
+ \r
+ public void setQuery (String query) {\r
+ logger.debug("Creating new command parameter for " + query);\r
+ setCommandParameter("search",new CommandParameter("query","=",query));\r
+ }\r
+ \r
+ public String getQuery () {\r
+ return getCommandParameterValueSimple("search","query",null);\r
+ }\r
+ \r
+ public void setFacet (String facetKey, String term) { \r
+ if (term != null && term.length()>0) {\r
+ queryStates.getCurrentState().setCommandParameterExpression("search","query",new Expression(facetKey,"=",term),queryStates);\r
+ doSearch();\r
+ } \r
+ }\r
+ \r
+ public void setFacetOnQuery (String facetKey, String term) {\r
+ String facetExpression = facetKey + "=" + term; \r
+ if (term != null && term.length()>0) {\r
+ setCommandParameter("search",new CommandParameter("query","=", getQuery() + " and " + facetExpression));\r
+ doSearch(); \r
+ } \r
+ }\r
+ \r
+ public void removeFacet(String facetKey, String term) {\r
+ queryStates.getCurrentState().removeCommandParameterExpression("search","query",new Expression(facetKey,"=",term),queryStates);\r
+ doSearch();\r
+ }\r
+ \r
+ public void setTargetFilter (String targetId, String targetName) { \r
+ if (hasTargetFilter(new TargetFilter(targetId,targetName))) {\r
+ logger.debug("Already using target filter " + this.targetFilter.getFilterExpression());\r
+ } else { \r
+ this.targetFilter = new TargetFilter(targetId,targetName);\r
+ setCommandParameter("search",new CommandParameter("filter","=",this.targetFilter.getFilterExpression())); \r
+ doSearch();\r
+ } \r
+ }\r
+\r
+ public TargetFilter getTargetFilter () {\r
+ return targetFilter;\r
+ }\r
+ \r
+ public void removeTargetFilter () {\r
+ logger.debug("Removing target filter " + targetFilter.getFilterExpression());\r
+ this.targetFilter = null;\r
+ removeCommandParameter("search","filter"); \r
+ doSearch();\r
+ }\r
+ \r
+ public boolean hasTargetFilter() {\r
+ return targetFilter != null; \r
+ }\r
+ \r
+ public void setSort (String sortOption) {\r
+ logger.debug("Setting sort option: " + sortOption);\r
+ setCommandParameter("show",new CommandParameter("sort","=",sortOption));\r
+ update("show");\r
+ }\r
+ \r
+ public String getSort () {\r
+ return getCommandParameterValue("show","sort","relevance");\r
+ }\r
+ \r
+ public void setPageSize (int perPageOption) {\r
+ if (getPageSize()!=perPageOption) {\r
+ logger.debug("Setting perpage option to " + perPageOption + " and resetting start page.");\r
+ setCommandParameter("show",new CommandParameter("num","=",perPageOption));\r
+ setCommandParameter("show",new CommandParameter("start","=",0));\r
+ update("show");\r
+ } else {\r
+ logger.debug("Not updating page size, already is " + perPageOption);\r
+ }\r
+ }\r
+ \r
+ public int getPageSize () {\r
+ return getCommandParameterValue("show","num",20);\r
+ }\r
+ \r
+ public void setStart (int start) {\r
+ logger.debug("Setting start num to " + start);\r
+ setCommandParameter("show", new CommandParameter("start","=",start)); \r
+ update("show");\r
+ }\r
+ \r
+ public int getStart() {\r
+ return getCommandParameterValue("show","start",0);\r
+ }\r
+ \r
+ public String toggleRecord (String recId) {\r
+ if (hasRecord(recId)) {\r
+ removeCommand("record"); \r
+ dataObjects.put("record", new RecordResponse());\r
+ return "";\r
+ } else {\r
+ return updateRecord(recId);\r
+ }\r
+ }\r
+ \r
+ private String updateRecord(String recId) { \r
+ setCommandParameter("record",new CommandParameter("id","=",recId)); \r
+ return doCommand("record"); \r
+ }\r
+ \r
+ public boolean hasRecord (String recId) {\r
+ return getCommand("record").hasParameters() && getRecord().getRecId().equals(recId);\r
+ }\r
+ \r
+ public ShowResponse getShow () {\r
+ return ((ShowResponse) dataObjects.get("show"));\r
+ }\r
+ \r
+ public StatResponse getStat () {\r
+ return ((StatResponse) dataObjects.get("stat"));\r
+ }\r
+ \r
+ public RecordResponse getRecord() {\r
+ return ((RecordResponse) dataObjects.get("record"));\r
+ }\r
+ \r
+ public TermListsResponse getTermLists () {\r
+ return ((TermListsResponse) dataObjects.get("termlist"));\r
+ }\r
+ \r
+ public List<TermResponse> getFacetTerms (String facet, int count) {\r
+ return (getTermLists().getTermList(facet).getTerms(count));\r
+ }\r
+ \r
+ public List<TermResponse> getFacetTerms (String facet) {\r
+ return (getTermLists().getTermList(facet).getTerms());\r
+ }\r
+ \r
+ public ByTarget getByTarget() {\r
+ return ((ByTarget) dataObjects.get("bytarget"));\r
+ }\r
+ \r
+ \r
+ public String getCurrentStateKey () { \r
+ return queryStates.getCurrentStateKey();\r
+ }\r
+ \r
+ public void setCurrentStateKey(String key) {\r
+ logger.debug("************** request to set state key to: [" + key + "]"); \r
+ queryStates.setCurrentStateKey(key);\r
+ }\r
+ \r
+ private boolean hasTargetFilter(TargetFilter targetFilter) {\r
+ return hasTargetFilter() && targetFilter.equals(this.targetFilter);\r
+ }\r
+ \r
+ private boolean hasQuery() {\r
+ return !(getCommand("search").getParameter("query") == null);\r
+ }\r
+ \r
+ public boolean hasRecords () {\r
+ return getStat().getRecords() > 0 \r
+ && getShow().getHits() != null \r
+ && getShow().getHits().size()>0;\r
+ }\r
+ \r
+ public ResultsPager getPager () {\r
+ if (pager == null) {\r
+ pager = new ResultsPager(this); \r
+ } \r
+ return pager; \r
+ }\r
+ \r
+ public ResultsPager setPager (int pageRange) {\r
+ pager = new ResultsPager(this,pageRange);\r
+ return pager;\r
+ }\r
+ \r
+ private void handleQueryStateChanges (String commands) {\r
+ if (queryStates.hasPendingStateChange("search")) { \r
+ logger.debug("Found pending search change. Doing search before updating " + commands);\r
+ doSearch();\r
+ } \r
+ if (queryStates.hasPendingStateChange("record") && ! commands.equals("record")) { \r
+ logger.debug("Found pending record ID change. Doing record before updating " + commands);\r
+ queryStates.hasPendingStateChange("record",false);\r
+ if (getCommand("record").hasParameters()) {\r
+ updateRecord(getCommand("record").getParameter("id").getSimpleValue());\r
+ } else {\r
+ removeCommand("record"); \r
+ dataObjects.put("record", new RecordResponse());\r
+ }\r
+ } \r
+ }\r
+\r
+ private String getActiveClients() {\r
+ logger.debug("Active clients: "+getShow().getActiveClients());\r
+ if (getShow()!=null) {\r
+ return getShow().getActiveClients();\r
+ } else {\r
+ return "";\r
+ }\r
+ }\r
+\r
+ private Pazpar2Command getCommand(String name) {\r
+ return queryStates.getCurrentState().getCommand(name);\r
+ }\r
+ \r
+ private void setCommandParameter(String commandName, CommandParameter parameter) {\r
+ logger.debug("Setting parameter for " + commandName + ": " + parameter);\r
+ queryStates.getCurrentState().setCommandParameter(commandName, parameter, queryStates); \r
+ }\r
+ \r
+ \r
+ private void removeCommandParameter(String commandName, String parameterName) {\r
+ queryStates.getCurrentState().removeCommandParameter(commandName,parameterName,queryStates); \r
+ }\r
+ \r
+ private void removeCommand (String commandName) {\r
+ queryStates.getCurrentState().removeCommand(commandName, queryStates);\r
+ }\r
+ \r
+ private String getCommandParameterValue (String commandName, String parameterName, String defaultValue) { \r
+ Pazpar2Command command = getCommand(commandName);\r
+ if (command != null) {\r
+ CommandParameter parameter = command.getParameter(parameterName);\r
+ if (parameter != null) {\r
+ return parameter.getValueWithExpressions();\r
+ }\r
+ }\r
+ return defaultValue; \r
+ }\r
+ \r
+ private String getCommandParameterValueSimple (String commandName, String parameterName, String defaultValue) { \r
+ Pazpar2Command command = getCommand(commandName);\r
+ if (command != null) {\r
+ CommandParameter parameter = command.getParameter(parameterName);\r
+ if (parameter != null) {\r
+ return parameter.getSimpleValue();\r
+ }\r
+ }\r
+ return defaultValue; \r
+ }\r
+\r
+ \r
+ private int getCommandParameterValue (String commandName, String parameterName, int defaultValue) {\r
+ Pazpar2Command command = getCommand(commandName);\r
+ if (command != null) {\r
+ CommandParameter parameter = command.getParameter(parameterName);\r
+ if (parameter != null) {\r
+ return Integer.parseInt(parameter.getSimpleValue());\r
+ }\r
+ }\r
+ return defaultValue; \r
+ }\r
+\r
+ private String doCommand(String commandName) {\r
+ Pazpar2Command command = getCommand(commandName); \r
+ logger.debug(command.getEncodedQueryString() + ": Results for "+ getCommand("search").getEncodedQueryString());\r
+ return update(commandName);\r
+ }\r
+ \r
+ private void resetDataObjects() {\r
+ logger.debug("Resetting show,stat,termlist,bytarget response objects.");\r
+ dataObjects = new ConcurrentHashMap<String,Pazpar2ResponseData>();\r
+ dataObjects.put("show", new ShowResponse());\r
+ dataObjects.put("stat", new StatResponse());\r
+ dataObjects.put("termlist", new TermListsResponse());\r
+ dataObjects.put("bytarget", new ByTarget());\r
+ dataObjects.put("record", new RecordResponse());\r
+ }\r
+\r
+}\r