P: AutoFill Entity Global Converter

Question

I want to build p: autocomplete to search for different objects from objects. As a client, the article ....

The search works well and objects appear. But still the converter does not work.

Here is my code:

<p:autoComplete id="searchStartpage" size="35" maxlength="200" queryDelay="0" maxResults="10" minQueryLength="1" value="#{searchGeneralRequestController.selectedObject}" completeMethod="#{searchGeneralRequestController.completeObject}" var="o" itemLabel="#{object.id}" itemValue="#{object}" converter="objectForSearchConverter" forceSelection="false" itemtipMyPosition="left center" cache="false" itemtipAtPosition="right center"> <p:ajax event="itemSelect" listener="#{searchGeneralRequestController.handleSelect}" /> <p:column rendered="#{o.getClass().getSimpleName() == 'Mandatory'}"> #{o.surname} #{o.name} </p:column> <p:column rendered="#{o.getClass().getSimpleName() == 'Article'}"> #{o.name} </p:column> </p:autoComplete> 

And here is my converter:

 public Object getAsObject(FacesContext facesContext, UIComponent component, String submittedValue) { if (submittedValue.trim().equals("")) { return null; } else { try { // searchValue = submittedValue; int number = Integer.parseInt(submittedValue); for (Object p : objectList) { if (p instanceof Article) { Article article = (Article) p; if (article.getId() == number) { return p; } } if (p instanceof Customer) { Customer customer = (Customer) p; if (customer.getId() == number) { return p; } } if (p instanceof User) { User user = (User) p; if (user.getId() == number) { return p; } } if (p instanceof Mandatory) { Mandatory mandatory = (Mandatory) p; if (mandatory.getId() == number) { return p; } } } } catch (NumberFormatException exception) { throw new ConverterException(new FacesMessage( FacesMessage.SEVERITY_ERROR, "Conversion Error", "Not a valid player")); } } return null; } @Override public String getAsString(FacesContext context, UIComponent component, Object value) { if (value == null || value.equals("")) { return ""; } else { Long id = (value instanceof Mandatory) ? ((Mandatory) value) .getId() : null; return (id != null) ? String.valueOf(id) : null; } } 

All my entities have a hash and string method. Object is always null

Can someone help please

Answer 1

For AutoComplete try generic converter

 import java.util.Map; import java.util.Map.Entry; import java.util.UUID; import java.util.WeakHashMap; import javax.faces.component.UIComponent; import javax.faces.context.FacesContext; import javax.faces.convert.Converter; import javax.faces.convert.FacesConverter; @FacesConverter(value = "entityConverter") public class EntityConverter implements Converter { private static Map<Object, String> entities = new WeakHashMap<Object, String>(); @Override public String getAsString(FacesContext context, UIComponent component, Object entity) { synchronized (entities) { if (!entities.containsKey(entity)) { String uuid = UUID.randomUUID().toString(); entities.put(entity, uuid); return uuid; } else { return entities.get(entity); } } } @Override public Object getAsObject(FacesContext context, UIComponent component, String uuid) { for (Entry<Object, String> entry : entities.entrySet()) { if (entry.getValue().equals(uuid)) { return entry.getKey(); } } return null; } } 

Answer 2

Here is my code for ManagedBean:

 @Override public Object getRowData(String rowKey) { List<Object> countries = (List<Object>) getWrappedData(); for (Object searchGeneral : countries) { if (searchGeneral instanceof Mandatory) { Mandatory mandatory = (Mandatory) searchGeneral; if (mandatory.getId().equals(rowKey)) return searchGeneral; } if (searchGeneral instanceof Article) { Article article = (Article) searchGeneral; if (article.getId().equals(rowKey)) return searchGeneral; } if (searchGeneral instanceof Customer) { Customer customer = (Customer) searchGeneral; if (customer.getId().equals(rowKey)) return searchGeneral; } } return null; } @Override public Object getRowKey(Object searchGeneral) { if (searchGeneral instanceof Customer) { Mandatory mandatory = (Mandatory) searchGeneral; return mandatory.getId(); } if (searchGeneral instanceof Customer) { Customer customer = (Customer) searchGeneral; return customer.getId(); } return null; } public List<Object> completeObject(String query) throws SearchGeneralNotFoundException, UserNotFoundException { List<Object> suggestions = new ArrayList<Object>(); query = query.trim(); filteredSearchGeneral = searchGeneralService.searchForStartPage(query); for (Object p : filteredSearchGeneral) { if (p instanceof Article) { Article article = (Article) p; if (article.getName().toLowerCase() .startsWith(query.toLowerCase())) suggestions.add(p); } if (p instanceof Customer) { Customer customer = (Customer) p; if (customer.getName().toLowerCase() .startsWith(query.toLowerCase())) suggestions.add(p); } if (p instanceof Mandatory) { Mandatory mandatory = (Mandatory) p; if (mandatory.getSurname().toLowerCase() .startsWith(query.toLowerCase())) suggestions.add(p); if (mandatory.getName().toLowerCase() .startsWith(query.toLowerCase())) suggestions.add(p); } if (p instanceof User) { User user = (User) p; if (user.getName().startsWith(query)) suggestions.add(p); } } return suggestions; } public void handleSelect(SelectEvent event) { Object object = (Object) event; LOGGER.info("handleSelect: " + object.getClass().getName()); if (event.getClass().getSimpleName() == "Article") { LOGGER.info("ARTICLE"); } redirectToCorrectPage(object); } public String redirectToCorrectPage(Object object) { LOGGER.info("redirectToCorrectPage"); String url = ""; FacesContext ctx = FacesContext.getCurrentInstance(); try { if (selectedObject instanceof Mandatory) { LOGGER.info("redirectToCorrectPage Mandatory"); ExternalContext extContext = ctx.getExternalContext(); url = extContext .encodeActionURL(ctx .getApplication() .getViewHandler() .getActionURL(ctx, "/portal/mandatoryRegionEdit.xhtml")); extContext.redirect(url); } } catch (IOException ioe) { throw new FacesException(ioe); } return url; }