i want save changes of datatable in db appear exception: java.lang.string cannot cast jpa.tcamposencuesta. don't understand it. part of managedbean , extends class tcamposencuesta.
public void oneditrow(roweditevent event){ try { tcamposencuesta tobj = (tcamposencuesta)event.getobject(); this.setidcamposencuesta(tobj.getidcamposencuesta()); this.setnombre(((tcamposencuesta) event.getobject()).getnombre()); this.setamplitud(((tcamposencuesta) event.getobject()).getamplitud()); properties pr = this.actualizarinsertar(); string id = pr.getproperty("id"); addmessage("ha modificado a: " + id); } catch(exception e){ addmessage(row+ "error: " + e.getmessage()); } } with tests caught errors in both types of casting have.
this .xhtml, put datatable inside of datascroller , works.
<h:form id="form"> <p:growl id="msgs" showdetail="true"/> <p:datascroller id="idscroller" value="#{mbcamposencuesta.listcamp}" var="campoenc" chunksize="2"> <!-- <f:facet name="header"> scroll para cargar más elementos </f:facet> --> <f:facet name="loader"> <p:commandbutton type="button" value="cargar más" icon="fa fa-angle-double-down" /> </f:facet> <p:datatable id="iddatatable" editable="true" value="campoenc" styleclass="dtable"> <p:ajax event="rowedit" listener="#{mbcamposencuesta.oneditrow}" update=":form:msgs"/> <!-- <p:ajax event="roweditcancel" /> --> <p:column> <p:celleditor> <f:facet name="output" ><h:outputtext value="#{campoenc.idcamposencuesta}" /></f:facet> <f:facet name="input" ><p:inputtext value="#{campoenc.idcamposencuesta}" disabled="true" /></f:facet> </p:celleditor> </p:column> <p:column> <p:celleditor > <f:facet name="output" ><h:outputtext value="#{campoenc.nombre}" /></f:facet> <f:facet name="input" ><p:inputtext value="#{campoenc.nombre}" /></f:facet> </p:celleditor> </p:column> <p:column> <p:celleditor> <f:facet name="output"><h:outputlabel value="#{campoenc.amplitud}" /></f:facet> <f:facet name="input"><p:inputnumber value="#{campoenc.amplitud}" /></f:facet> </p:celleditor> </p:column> <p:column> <p:celleditor> <f:facet name="output" ><h:outputtext value="#{campoenc.script}" /></f:facet> <f:facet name="input" ><p:inputtext value="#{campoenc.script}" disabled="true" /></f:facet> </p:celleditor> </p:column> <p:column> <p:celleditor > <f:facet name="output" ><h:outputtext value="#{campoenc.tipocampo}" /></f:facet> <f:facet name="input" ><p:inputtext value="#{campoenc.tipocampo}" /></f:facet> </p:celleditor> </p:column> <p:column> <p:celleditor> <f:facet name="output"><h:outputlabel value="#{campoenc.idlista}" /></f:facet> <f:facet name="input"><p:inputnumber value="#{campoenc.idlista}" /></f:facet> </p:celleditor> </p:column> <p:column style="width:32px"> <p:roweditor /> </p:column> </p:datatable> </p:datascroller> </h:form> the stack:
java.lang.classcastexception: java.lang.string cannot cast jpa.tcamposencuesta @ com.beans.jsfprograma.mbcamposencuesta.oneditrow(mbcamposencuesta.java:100) @ sun.reflect.nativemethodaccessorimpl.invoke0(native method) @ sun.reflect.nativemethodaccessorimpl.invoke(nativemethodaccessorimpl.java:62) @ sun.reflect.delegatingmethodaccessorimpl.invoke(delegatingmethodaccessorimpl.java:43) @ java.lang.reflect.method.invoke(method.java:498) @ org.apache.el.parser.astvalue.invoke(astvalue.java:247) @ org.apache.el.methodexpressionimpl.invoke(methodexpressionimpl.java:267) @ com.sun.faces.facelets.el.tagmethodexpression.invoke(tagmethodexpression.java:105) @ org.primefaces.behavior.ajax.ajaxbehaviorlistenerimpl.processarglistener(ajaxbehaviorlistenerimpl.java:79) @ org.primefaces.behavior.ajax.ajaxbehaviorlistenerimpl.processajaxbehavior(ajaxbehaviorlistenerimpl.java:63) @ org.primefaces.event.abstractajaxbehaviorevent.processlistener(abstractajaxbehaviorevent.java:38) @ javax.faces.component.behavior.behaviorbase.broadcast(behaviorbase.java:106) @ javax.faces.component.uicomponentbase.broadcast(uicomponentbase.java:804) @ javax.faces.component.uidata.broadcast(uidata.java:1086) @ javax.faces.component.uidata.broadcast(uidata.java:1108) @ javax.faces.component.uidata.broadcast(uidata.java:1108) @ javax.faces.component.uiviewroot.broadcastevents(uiviewroot.java:790) @ javax.faces.component.uiviewroot.processapplication(uiviewroot.java:1282) @ com.sun.faces.lifecycle.invokeapplicationphase.execute(invokeapplicationphase.java:81) @ com.sun.faces.lifecycle.phase.dophase(phase.java:101) @ com.sun.faces.lifecycle.lifecycleimpl.execute(lifecycleimpl.java:198) @ javax.faces.webapp.facesservlet.service(facesservlet.java:646) @ org.apache.catalina.core.applicationfilterchain.internaldofilter(applicationfilterchain.java:291) @ org.apache.catalina.core.applicationfilterchain.dofilter(applicationfilterchain.java:206) @ org.apache.tomcat.websocket.server.wsfilter.dofilter(wsfilter.java:52) @ org.apache.catalina.core.applicationfilterchain.internaldofilter(applicationfilterchain.java:239) @ org.apache.catalina.core.applicationfilterchain.dofilter(applicationfilterchain.java:206) @ org.netbeans.modules.web.monitor.server.monitorfilter.dofilter(monitorfilter.java:393) @ org.apache.catalina.core.applicationfilterchain.internaldofilter(applicationfilterchain.java:239) @ org.apache.catalina.core.applicationfilterchain.dofilter(applicationfilterchain.java:206) @ org.apache.catalina.core.standardwrappervalve.invoke(standardwrappervalve.java:217) @ org.apache.catalina.core.standardcontextvalve.invoke(standardcontextvalve.java:106) @ org.apache.catalina.authenticator.authenticatorbase.invoke(authenticatorbase.java:502) @ org.apache.catalina.core.standardhostvalve.invoke(standardhostvalve.java:142) @ org.apache.catalina.valves.errorreportvalve.invoke(errorreportvalve.java:79) @ org.apache.catalina.valves.abstractaccesslogvalve.invoke(abstractaccesslogvalve.java:616) @ org.apache.catalina.core.standardenginevalve.invoke(standardenginevalve.java:88) @ org.apache.catalina.connector.coyoteadapter.service(coyoteadapter.java:518) @ org.apache.coyote.http11.abstracthttp11processor.process(abstracthttp11processor.java:1091) @ org.apache.coyote.abstractprotocol$abstractconnectionhandler.process(abstractprotocol.java:673) @ org.apache.tomcat.util.net.nioendpoint$socketprocessor.dorun(nioendpoint.java:1500) @ org.apache.tomcat.util.net.nioendpoint$socketprocessor.run(nioendpoint.java:1456) @ java.util.concurrent.threadpoolexecutor.runworker(threadpoolexecutor.java:1142) @ java.util.concurrent.threadpoolexecutor$worker.run(threadpoolexecutor.java:617) @ org.apache.tomcat.util.threads.taskthread$wrappingrunnable.run(taskthread.java:61) @ java.lang.thread.run(thread.java:745) stack: java.lang.classcastexception: java.lang.string cannot cast jpa.tcamposencuesta @ com.beans.jsfprograma.mbcamposencuesta.oneditrow(mbcamposencuesta.java:100) @ sun.reflect.nativemethodaccessorimpl.invoke0(native method) @ sun.reflect.nativemethodaccessorimpl.invoke(nativemethodaccessorimpl.java:62) @ sun.reflect.delegatingmethodaccessorimpl.invoke(delegatingmethodaccessorimpl.java:43) @ java.lang.reflect.method.invoke(method.java:498) @ org.apache.el.parser.astvalue.invoke(astvalue.java:247) @ org.apache.el.methodexpressionimpl.invoke(methodexpressionimpl.java:267) @ com.sun.faces.facelets.el.tagmethodexpression.invoke(tagmethodexpression.java:105) @ org.primefaces.behavior.ajax.ajaxbehaviorlistenerimpl.processarglistener(ajaxbehaviorlistenerimpl.java:79) @ org.primefaces.behavior.ajax.ajaxbehaviorlistenerimpl.processajaxbehavior(ajaxbehaviorlistenerimpl.java:63) @ org.primefaces.event.abstractajaxbehaviorevent.processlistener(abstractajaxbehaviorevent.java:38) @ javax.faces.component.behavior.behaviorbase.broadcast(behaviorbase.java:106) @ javax.faces.component.uicomponentbase.broadcast(uicomponentbase.java:804) @ javax.faces.component.uidata.broadcast(uidata.java:1086) @ javax.faces.component.uidata.broadcast(uidata.java:1108) @ javax.faces.component.uidata.broadcast(uidata.java:1108) @ javax.faces.component.uiviewroot.broadcastevents(uiviewroot.java:790) @ javax.faces.component.uiviewroot.processapplication(uiviewroot.java:1282) @ com.sun.faces.lifecycle.invokeapplicationphase.execute(invokeapplicationphase.java:81) @ com.sun.faces.lifecycle.phase.dophase(phase.java:101) @ com.sun.faces.lifecycle.lifecycleimpl.execute(lifecycleimpl.java:198) @ javax.faces.webapp.facesservlet.service(facesservlet.java:646) @ org.apache.catalina.core.applicationfilterchain.internaldofilter(applicationfilterchain.java:291) @ org.apache.catalina.core.applicationfilterchain.dofilter(applicationfilterchain.java:206) @ org.apache.tomcat.websocket.server.wsfilter.dofilter(wsfilter.java:52) @ org.apache.catalina.core.applicationfilterchain.internaldofilter(applicationfilterchain.java:239) @ org.apache.catalina.core.applicationfilterchain.dofilter(applicationfilterchain.java:206) @ org.netbeans.modules.web.monitor.server.monitorfilter.dofilter(monitorfilter.java:393) @ org.apache.catalina.core.applicationfilterchain.internaldofilter(applicationfilterchain.java:239) @ org.apache.catalina.core.applicationfilterchain.dofilter(applicationfilterchain.java:206) @ org.apache.catalina.core.standardwrappervalve.invoke(standardwrappervalve.java:217) @ org.apache.catalina.core.standardcontextvalve.invoke(standardcontextvalve.java:106) @ org.apache.catalina.authenticator.authenticatorbase.invoke(authenticatorbase.java:502) @ org.apache.catalina.core.standardhostvalve.invoke(standardhostvalve.java:142) @ org.apache.catalina.valves.errorreportvalve.invoke(errorreportvalve.java:79) @ org.apache.catalina.valves.abstractaccesslogvalve.invoke(abstractaccesslogvalve.java:616) @ org.apache.catalina.core.standardenginevalve.invoke(standardenginevalve.java:88) @ org.apache.catalina.connector.coyoteadapter.service(coyoteadapter.java:518) @ org.apache.coyote.http11.abstracthttp11processor.process(abstracthttp11processor.java:1091) @ org.apache.coyote.abstractprotocol$abstractconnectionhandler.process(abstractprotocol.java:673) @ org.apache.tomcat.util.net.nioendpoint$socketprocessor.dorun(nioendpoint.java:1500) @ org.apache.tomcat.util.net.nioendpoint$socketprocessor.run(nioendpoint.java:1456) @ java.util.concurrent.threadpoolexecutor.runworker(threadpoolexecutor.java:1142) @ java.util.concurrent.threadpoolexecutor$worker.run(threadpoolexecutor.java:617) @ org.apache.tomcat.util.threads.taskthread$wrappingrunnable.run(taskthread.java:61) @ java.lang.thread.run(thread.java:745)
this object:
package jpa; import java.io.serializable; import java.util.date; import java.util.properties; import javax.persistence.basic; import javax.persistence.column; import javax.persistence.entity; import javax.persistence.id; import javax.persistence.lob; import javax.persistence.namedqueries; import javax.persistence.namedquery; import javax.persistence.table; import javax.persistence.temporal; import javax.persistence.temporaltype; import javax.validation.constraints.notnull; import javax.validation.constraints.size; import javax.xml.bind.annotation.xmlrootelement; /** * * @author miguel morales */ @entity @table(name = "tcampos_encuesta", catalog = "", schema = "") @xmlrootelement @namedqueries({ @namedquery(name = "tcamposencuesta.findall", query = "select t tcamposencuesta t"), @namedquery(name = "tcamposencuesta.findbyidcamposencuesta", query = "select t tcamposencuesta t t.idcamposencuesta = :idcamposencuesta"), @namedquery(name = "tcamposencuesta.findbynombre", query = "select t tcamposencuesta t t.nombre = :nombre"), @namedquery(name = "tcamposencuesta.findbytipocampo", query = "select t tcamposencuesta t t.tipocampo = :tipocampo"), @namedquery(name = "tcamposencuesta.findbyamplitud", query = "select t tcamposencuesta t t.amplitud = :amplitud"), @namedquery(name = "tcamposencuesta.findbyidlista", query = "select t tcamposencuesta t t.idlista = :idlista"), @namedquery(name = "tcamposencuesta.findbyfechacreacion", query = "select t tcamposencuesta t t.fechacreacion = :fechacreacion")}) public class tcamposencuesta extends statement implements serializable { private static final long serialversionuid = 1l; @id @basic(optional = false) @notnull @column(name = "idcampos_encuesta", nullable = false) private integer idcamposencuesta = 0; @size(max = 10) @column(name = "nombre", length = 10) private string nombre; @lob @size(max = 2147483647) @column(name = "script", length = 2147483647) private string script; @size(max = 1) @column(name = "tipo_campo", length = 1) private string tipocampo; @column(name = "amplitud") private integer amplitud; @column(name = "idlista") private integer idlista; @basic(optional = false) @notnull @column(name = "fecha_creacion", nullable = true) @temporal(temporaltype.timestamp) private date fechacreacion; public tcamposencuesta() { } public tcamposencuesta(integer idcamposencuesta) { this.idcamposencuesta = idcamposencuesta; } public tcamposencuesta(integer idcamposencuesta, date fechacreacion) { this.idcamposencuesta = idcamposencuesta; this.fechacreacion = fechacreacion; } public integer getidcamposencuesta() { return idcamposencuesta; } public void setidcamposencuesta(integer idcamposencuesta) { this.idcamposencuesta = idcamposencuesta; } public string getnombre() { return nombre; } public void setnombre(string nombre) { this.nombre = nombre; } public string getscript() { return script; } public void setscript(string script) { this.script = script; } public string gettipocampo() { return tipocampo; } public void settipocampo(string tipocampo) { this.tipocampo = tipocampo; } public integer getamplitud() { return amplitud; } public void setamplitud(integer amplitud) { this.amplitud = amplitud; } public integer getidlista() { return idlista; } public void setidlista(integer idlista) { this.idlista = idlista; } public date getfechacreacion() { return fechacreacion; } public void setfechacreacion(date fechacreacion) { this.fechacreacion = fechacreacion; } }
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