Hi,
I am learning seam and following a very famous book Seam In Action by Dan Allen.
This is an example from this book.
Seam
2.2.
0.GA
JBoss 5.1.
0.GA
Here the page parameter roundId is always null even after a round is serialized, it is never passed. Neither to Roud.xhtml nor to RoundEdit.xhtml after clicking save on RoundEdit.xhtml. The entity always stays unmanaged.
RoundEdit.page.xml
<?xml version="1.
0" encoding="UTF-8"?>
<page xmlns="http://jboss.com/products/seam/pages"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://jboss.com/products/seam/pages http://jboss.com/products/seam/pages-2.
2.xsd"
login-required="true">
<begin-conversation join="true" />
<param name="roundId" value="#{roundHome.id}" converterId="javax.
faces.Long"/>
<param name="teeSetId" value="#{teeSetHome.teeSetId}" />
<param name="roundFrom" />
<action execute="#{roundHome.wire}" />
<navigation from-action="#{roundHome.persist}">
<rule if-outcome="persisted">
<end-conversation/>
<redirect view-id="#{null != roundFrom ? roundFrom : '/Round.xhtml'}" />
</rule>
</navigation>
</page>
RoundEdit.xhtml
<?xml version="1.
0" encoding="UTF-8"?>
<!DOCTYPE composition PUBLIC "-//W3C//DTD XHTML 1.
0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<ui:composition xmlns="http://www.w3.org/1999/xhtml"
xmlns:s="http://jboss.com/products/seam/taglib"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:a="http://richfaces.org/a4j"
xmlns:rich="http://richfaces.org/rich"
template="layout/template.xhtml">
<ui:define name="body">
<h:form id="roundform">
<rich:panel>
<f:facet name="header>">
#{roundHome.managed ? 'Edit' : 'Add' } Round
</f:facet>
<s:decorate id="dateField" template="layout/edit.xhtml">
<ui:define name="label">Date:</ui:define>
<rich:calendar id="date" datePattern="dd/MM/yyyy" value="#{round.date}"/>
</s:decorate>
<s:decorate id="notesField" template="layout/edit.xhtml">
<ui:define name="label">Notes:</ui:define>
<h:inputTextarea id="notes" cols="80" rows="3" value="#{round.notes}" />
</s:decorate>
<s:decorate id="totalScoreField" template="layout/edit.xhtml">
<ui:define name="label">Total Score:</ui:define>
<h:inputText id="totalScore" value="#{round.totalScore}" />
</s:decorate>
<s:decorate id="weatherField" template="layout/edit.xhtml">
<ui:define name="label">Weather:</ui:define>
<h:selectOneMenu id="weather" value="#{round.weather}">
<s:selectItems var="_weather" value="#{weatherCategories}" label="#{_weather.label}"
noSelectionLabel=" Select " />
<s:convertEnum/>
</h:selectOneMenu>
</s:decorate>
<h:messages/>
<div style="clear: both;">
<span class="required">*</span> required fields
</div>
</rich:panel>
<div class="actionButtons">
<h:commandButton id="save" value="Save"
action="#{roundHome.persist}"
rendered="#{!roundHome.managed}"
disabled="#{!roundHome.wired}" />
<h:commandButton id="update" value="Update" action="#{roundHome.update}"
rendered="#{roundHome.managed}" />
<h:commandButton id="delete" value="Delete" action="#{roundHome.remove}"
rendered="#{roundHome.managed}" />
<s:button id="discard" value="Discard changes" propagation="end"
view="/Round.xhtml" rendered="#{roundHome.managed}" />
<s:button id="cancel" value="Cancel" propagation="end"
view="/#{empty roundFrom ? 'RoundList' : roundFrom}.xhtml"
rendered="#{!roundHome.managed}" />
</div>
<rich:tabPanel>
<rich:tab label="Tee Set">
<div class="association">
<h:outputText value="Tee set not selected" rendered="#{round.teeSet == null}" />
<rich:dataTable var="_teeSet" value="#{round.teeSet}" rendered="#{round.teeSet != null}">
<h:column>
<f:facet name="header">Course</f:facet>#{_teeSet.course.name}
</h:column>
<h:column>
<f:facet name="header">Color</f:facet>#{_teeSet.color}
</h:column>
<h:column>
<f:facet name="header">Position</f:facet>#{_teeSet.pos}
</h:column>
</rich:dataTable>
</div>
</rich:tab>
</rich:tabPanel>
</h:form>
</ui:define>
</ui:composition>
Round.page.xml
<?xml version="1.
0" encoding="UTF-8"?>
<page xmlns="http://jboss.com/products/seam/pages"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://jboss.com/products/seam/pages http://jboss.com/products/seam/pages-2.
2.xsd">
<param name="roundId" value="#{roundHome.id}" converterId="javax.
faces.Long"/>
</page>
Round.xhtml
<?xml version="1.
0" encoding="UTF-8"?>
<!DOCTYPE composition PUBLIC "-//W3C//DTD XHTML 1.
0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<ui:composition xmlns="http://www.w3.org/1999/xhtml"
xmlns:s="http://jboss.com/products/seam/taglib"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:a="http://richfaces.org/a4j"
xmlns:rich="http://richfaces.org/rich"
template="layout/template.xhtml">
<ui:define name="body">
<h:form id="roundform">
<rich:panel>
<f:facet name="header>">Round</f:facet>
<s:decorate id="id" template="layout/display.xhtml">
<ui:define name="label">Id:</ui:define>
<h:outputText value="#{null == roundHome.id ? 'null' : roundHome.id}">
<s:convertDateTime type="date" />
</h:outputText>
</s:decorate>
<s:decorate id="date" template="layout/display.xhtml">
<ui:define name="label">Date:</ui:define>
<h:outputText value="#{roundHome.instance.date}">
<s:convertDateTime type="date" />
</h:outputText>
</s:decorate>
<s:decorate id="golfer" template="layout/display.xhtml">
<ui:define name="label">Golfer:</ui:define>
#{roundHome.instance.golfer.name}
</s:decorate>
<s:decorate id="totalScore" template="layout/display.xhtml">
<ui:define name="label">Total Score:</ui:define>
#{roundHome.instance.totalScore}
</s:decorate>
<s:decorate id="weather" template="layout/display.xhtml">
<ui:define name="label">Weather:</ui:define>
#{roundHome.instance.weather}
</s:decorate>
<s:decorate id="notes" template="layout/display.xhtml">
<ui:define name="label">Notes:</ui:define>
#{roundHome.instance.notes}
</s:decorate>
<div style="clear:both"/>
</rich:panel>
<div class="actionButtons">
<s:button id="edit" view="/RoundEdit.xhtml" value="Edit" />
</div>
<rich:tabPanel>
<rich:tab label="Tee Set">
<div class="association">
<h:outputText value="Tee set not selected" rendered="#{roundHome.instance.teeSet == null}" />
<rich:dataTable var="_teeSet" value="#{roundHome.instance.teeSet}" rendered="#{roundHome.instance.teeSet != null}">
<h:column>
<f:facet name="header">Course</f:facet>#{_teeSet.course.name}
</h:column>
<h:column>
<f:facet name="header">Color</f:facet>#{_teeSet.color}
</h:column>
<h:column>
<f:facet name="header">Position</f:facet>#{_teeSet.pos}
</h:column>
</rich:dataTable>
</div>
</rich:tab>
</rich:tabPanel>
</h:form>
</ui:define>
</ui:composition>
The entityHome RoundHome.java
@Name("roundHome")
public class RoundHome extends EntityHome<Round>{
@In(required = false)
private Golfer currentGolfer;
@In(create = true)
private TeeSetHome teeSetHome;
@Logger
private Log logger;
public void wire() {
logger.info("wire called");
TeeSet teeSet = teeSetHome.getDefinedInstance();
if (null != teeSet) {
getInstance().setTeeSet(teeSet);
logger.info("Successfully wired the teeSet instance with color: " + teeSet.getColor());
}
}
public boolean isWired() {
logger.info("is wired called");
if(null == getInstance().getTeeSet()) {
logger.info("wired teeSet instance is null, the button will be disabled !");
return false;
}
else {
logger.info("wired teeSet instance is NOT null, the button will be enabled !");
logger.info("teeSet color: "+getInstance().getTeeSet().getColor());
return true;
}
}
@RequestParameter
public void setRoundId(Long id) {
logger.info("in Setter RoundId is: " + id);
super.setId(id);
}
public Long getRoundId() {
Long id = (Long) getId();
logger.info("Setting RoundId : " + id);
return id;
}
@Override
protected Round createInstance() {
Round round = super.createInstance();
round.setGolfer(currentGolfer);
round.setDate(new java.sql.Date(System.currentTimeMillis()));
logger.info("Created a Round with roundId: " + round.getId());
return round;
}
@Override
protected Round loadInstance() {
logger.info("loadInstance for id: " + getId());
return (Round) getEntityManager().createQuery(
"select r from Round r " +
"join fetch r.golfer g " +
"join fetch r.teeSet ts " +
"join fetch ts.course c " +
"where r.id = :id ")
.setParameter("id",getId())
.getSingleResult();
}
}
