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POh:dataTable binding => duplicate ID
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  1. POh:dataTable binding => duplicate ID
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    copied!<p>I have a problem using HtmlDataTable for viewing data from database.</p> <p>When I create component, the table has sometimes (not always) <strong>twice number of columns</strong>.</p> <p>It is shown correctly and after several refreshes (without move in dtb or something) there is for example 6 columns instead of 3 and application (sometimes) become unstable. Since this time I can't work with table because it reports "duplicate Id for a component"..</p> <p>Simple example (source: <a href="http://balusc.blogspot.com/2006/06/using-datatables.html" rel="nofollow">http://balusc.blogspot.com/2006/06/using-datatables.html</a>): </p> <pre><code>&lt;h:form id="bde"&gt; &lt;h:dataTable id="tbl" binding="#{myBDE.dataTable}" value="#{myBDE.dataList}" var="bdeItem"&gt; &lt;h:column&gt; &lt;f:facet name="header"&gt; &lt;h:outputText value="S" /&gt; &lt;/f:facet&gt; &lt;h:outputText value="#{bdeItem.s}" rendered="#{!myBDE.editModeRow}"/&gt; &lt;h:inputText value="#{bdeItem.s}" rendered="#{myBDE.editModeRow}" required="true" size="3"/&gt; &lt;/h:column&gt; &lt;h:column&gt; &lt;f:facet name="header"&gt; &lt;h:outputText value="ID" /&gt; &lt;/f:facet&gt; &lt;h:outputText value="#{bdeItem.id}"/&gt; &lt;/h:column&gt; &lt;/h:dataTable&gt; &lt;/h:form&gt; </code></pre> <p>And java.class </p> <pre><code>protected HtmlDataTable dataTable; public void setDataTable(HtmlDataTable dataTable) { this.dataTable = dataTable; } public HtmlDataTable getDataTable() { if (dataTable == null) { dataTable = new HtmlDataTable(); dataTable.setRows(DEFAULT_TABLE_ROWS); } return dataTable; } </code></pre> <p>And the Error message: </p> <pre><code>javax.servlet.ServletException: Component ID j_idt92:bde:tbl:j_idt129 has already been found in the view. javax.faces.webapp.FacesServlet.service(FacesServlet.java:422) root cause java.lang.IllegalStateException: Component ID j_idt92:bde2:tbl:j_idt129 has already been found in the view. com.sun.faces.util.Util.checkIdUniqueness(Util.java:821) com.sun.faces.util.Util.checkIdUniqueness(Util.java:805) com.sun.faces.util.Util.checkIdUniqueness(Util.java:805) com.sun.faces.util.Util.checkIdUniqueness(Util.java:805) com.sun.faces.util.Util.checkIdUniqueness(Util.java:805) com.sun.faces.util.Util.checkIdUniqueness(Util.java:805) com.sun.faces.application.view.StateManagementStrategyImpl.saveView(StateManagementStrategyImpl.java:144) com.sun.faces.application.StateManagerImpl.saveView(StateManagerImpl.java:133) com.sun.faces.application.view.WriteBehindStateWriter.flushToWriter(WriteBehindStateWriter.java:225) com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:418) com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:131) com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:121) com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101) com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139) javax.faces.webapp.FacesServlet.service(FacesServlet.java:410) </code></pre> <p>Followed by tree of components. I thing there's nothing duplicated in code, but dataTable create a new columns and after that it's really duplicated</p> <p>I have two working similar modules, and the third doesn´t work.</p> <p>Have you ever met this kind of problem?</p> <p>Thanks for advice</p>
 

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