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POprimefaces how to retrieve changed values from picklist
 

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    <p>i have implemented the following picklist:</p> <pre><code>&lt;p:pickList id="pickList" value="#{reportConfiguratorBean.dualListVars}" var="cRVariable" itemValue="#{cRVariable}" itemLabel="#{cRVariable.varName}" converter="#{cRImageTypeConverter}" immediate="true" rendered="true" &gt; &lt;f:facet name="sourceCaption"&gt;Available Variables&lt;/f:facet&gt; &lt;f:facet name="targetCaption"&gt;Associated Variables&lt;/f:facet&gt; &lt;/p:pickList&gt; &lt;f:facet name="footer"&gt; &lt;p:commandButton id='varassociate' action="#{reportConfiguratorBean.setAssocImTypVariables()}" value='Associate' process="@this,pickList" /&gt; &lt;/f:facet&gt; </code></pre> <p>Picklist is populated correctly (using getAssocImTypVariables() from database). But my <strong>ISSUE</strong> is that <strong>i can not capture the changed picklist values</strong> of a user alters the source and target lists. I am trying to capture the changes using a commandButton method "setAssocImTypVariables" as follows:</p> <pre><code>public void setAssocImTypVariables() { System.out.println("&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt; entered"); List&lt;CRVariable&gt; sourceVariables = this.dualListVars.getSource(); List&lt;CRVariable&gt; targetVariables = this.dualListVars.getTarget(); System.out.println(dualListVars.getSource()); System.out.println(dualListVars.getTarget()); for (CRVariable sourceVariable:sourceVariables) { System.out.println("&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt; I am a source variable: " + sourceVariable.getVarName()); } for (CRVariable targetVariable:targetVariables) { System.out.println("&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt; I am a target variable: " + targetVariable.getVarName()); } } </code></pre> <p>So if for example i have a picklist with INITIAL source = (Obj1,Obj2,Obj3,Obj5,Obj7) and target = (Obj4,Obj6), i move "Obj1" from source to target BUT in my console i get: </p> <p>--------- entered [] []</p> <p>So my dualListVars (source and target) is not populated! I have two empty lists for source and target...</p> <p><strong>So my method CAN NOT perceive picklist's changes... Any ideas? I am new to java + primefaces so it could be something really fundamental :(</strong></p> <p>I am also attaching the method getAssocImTypesOnLoad():</p> <pre><code>public void getAssocImTypesOnLoad() { Long imTypeId = Long.parseLong(virtualId); List&lt;CRVariable&gt; source; List&lt;CRVariable&gt; target; Session session = HibernateUtil.getSessionFactory().openSession(); Transaction tx = null; try { tx = session.beginTransaction(); String hq3 = "select distinct v from CRVariable v join v.crimagetypes t where t.id in (:itid)"; Query query3 = session.createQuery(hq3); query3.setParameter("itid",imTypeId); target = query3.list(); String hq4 = "select v FROM CRVariable v WHERE v.id not in (" + "select distinct v1.id " + "from CRVariable v1 " + "join v1.crimagetypes t2 " + "where t2.id in (:itid))"; Query query4 = session.createQuery(hq4); query4.setParameter("itid",imTypeId); source = query4.list(); dualListVars = new DualListModel&lt;CRVariable&gt;(source, target); tx.commit(); } catch (Exception e) { if (tx != null) { e.printStackTrace(); } } finally { session.close(); } } </code></pre>
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    2. COThis might be useful ... http://stackoverflow.com/questions/10622582/primefaces-picklist-update-target-list-on-transfer/10630201#10630201
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