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POselectOneMenu in dataTable, default value not getting set properly
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  1. POselectOneMenu in dataTable, default value not getting set properly
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    copied!<p>When I place a selectOneMenu within a dataTable, it does not display the correct default value in the selectOneMenu. The datatable is bound to a list of POJO's. The POJO entity Badge references a POJO entity we will call Facility. This Facility should be the selected value of the selectOneMenu in the row (the row being each Badge).</p> <p>The following is my simple example of a table:</p> <pre><code>&lt;h:dataTable id="examp" value="#{managedBean.badges}" var="badge"&gt; &lt;h:column rowHeader="rowie"&gt; &lt;h:selectOneMenu value="#{badge.facility}" id="col1"&gt; &lt;f:converter converterId="facilityConverter" /&gt; &lt;f:selectItems value="#{managedBean.facilities}" /&gt; &lt;/h:selectOneMenu&gt; &lt;/h:column&gt; &lt;/h:dataTable&gt; </code></pre> <p>The selectItems are a List of SelectItem objects that are created at PostConstruct. These are within my managedbean that is in ViewScope.</p> <pre><code>public class ListBadges extends BaseBean { private List&lt;Badge&gt; badges = new ArrayList&lt;Badge&gt;(); private List&lt;SelectItem&gt; facilities = new ArrayList&lt;SelectItem&gt;(); public ListBadges() { getBadgesFromDatabase(true); } @PostConstruct public void init() { if (facilities.size() &lt;= 0) { try { List&lt;Facility&gt; facilityBeans = FacilityHelper.getFacilities(); for (Facility fac : facilityBeans) { facilities.add(new SelectItem(fac, fac.getFacilityName())); } } catch (tException e) { log.error("ListBadges.init(): " + e.getMessage()); e.printStackTrace(); } } } public void getBadgesFromDatabase(boolean forceRefresh) { if (forceRefresh || badges == null || badges.isEmpty()) badges = BadgeHelper.getBadgeList(); } /// /// Bean Properties /// public List&lt;Badge&gt; getBadges() { return badges; } public void setBadges(List&lt;Badge&gt; badges) { this.badges = badges; } public List&lt;SelectItem&gt; getFacilities() { return facilities; } public void setFacilities(List&lt;SelectItem&gt; facilities) { this.facilities = facilities; } </code></pre> <p>Stepping through the code I confirm that all of the data is correct. In my converter, I verified that the arguments passed to getAsString is correct, so it should have identified the correct item.</p> <pre><code>@FacesConverter("facilityConverter") public class FacilityConverter implements Converter { @Override public Object getAsObject(FacesContext context, UIComponent component, String from) { try { ELContext elContext = FacesContext.getCurrentInstance().getELContext(); ListBadges neededBean = (ListBadges) context.getApplication().getELResolver().getValue(elContext, null, "managedBean"); long id = Long.parseLong(from); for (SelectItem sItem : neededBean.getFacilities()) { Facility facility = (Facility)sItem.getValue(); if (facility.getFacilityId() == id) return facility; } } catch (Exception e) { } return null; } @Override public String getAsString(FacesContext context, UIComponent component, Object value) { try { Facility facility = (Facility)value; return facility.getFacilityId() + ""; } catch (Exception e) { } return null; } } </code></pre> <p>Here is the <code>Facility</code> class which has equals and hashCode implemented:</p> <pre><code>public class Facility implements java.io.Serializable { private static final long serialVersionUID = 1L; private long facilityId; private String facilityName; private String address1; private String address2; private String city; private String state; private String postalCode; private String url; private String phone; private String siteManager; public Facility() { } public Facility(String facilityName) { this.facilityName = facilityName; } public Facility(String facilityName, String address1, String address2, String city, String state, String postalCode, String url, String phone, String siteManager) { this.facilityName = facilityName; this.address1 = address1; this.address2 = address2; this.city = city; this.state = state; this.postalCode = postalCode; this.url = url; this.phone = phone; this.siteManager = siteManager; } public long getFacilityId() { return this.facilityId; } public void setFacilityId(long facilityId) { this.facilityId = facilityId; } public String getFacilityName() { return this.facilityName; } public void setFacilityName(String facilityName) { this.facilityName = facilityName; } public String getAddress1() { return this.address1; } public void setAddress1(String address1) { this.address1 = address1; } public String getAddress2() { return this.address2; } public void setAddress2(String address2) { this.address2 = address2; } public String getCity() { return this.city; } public void setCity(String city) { this.city = city; } public String getState() { return this.state; } public void setState(String state) { this.state = state; } public String getPostalCode() { return this.postalCode; } public void setPostalCode(String postalCode) { this.postalCode = postalCode; } public String getUrl() { return this.url; } public void setUrl(String url) { this.url = url; } public String getPhone() { return phone; } public void setPhone(String phone) { this.phone = phone; } public String getSiteManager() { return siteManager; } public void setSiteManager(String siteManager) { this.siteManager = siteManager; } @Override public boolean equals(Object o) { if (!(o instanceof Facility) || (o == null)) return false; if (o == this) return true; Facility obj = (Facility)o; return obj.getFacilityId() == this.getFacilityId(); } @Override public int hashCode() { return (new Long(this.getFacilityId()).hashCode()) ^ ((this.getAddress1() == null) ? 0 : this.getAddress1().hashCode()) ^ ((this.getAddress2() == null) ? 0 : this.getAddress2().hashCode()) ^ ((this.getCity() == null) ? 0 : this.getCity().hashCode()) ^ ((this.getFacilityName() == null) ? 0 : this.getFacilityName().hashCode()) ^ ((this.getPhone() == null) ? 0 : this.getPhone().hashCode()) ^ ((this.getPostalCode() == null) ? 0 : this.getPostalCode().hashCode()) ^ ((this.getSiteManager() == null) ? 0 : this.getSiteManager().hashCode()) ^ ((this.getUrl() == null) ? 0 : this.getUrl().hashCode()); } } </code></pre> <p>I would greatly appreciate any feedback.</p>
 

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