Worst possible situation
Greeting,
The subject line is grim but true. I was developing Seam app on Windows box and everything worked fine, I put it on a Linux box and it doesn't work and doesn't spit out any exceptions.
Ok, a bit of details. I use Seam 2.0.1 and tomcat 6 on Java 5. Windows and Linux environments have the very same versions of all components. When I started debugging this problem I created a very simple TestWidget entity with two pages to see the list and details for test widgets.
@Entity
@Table(name = "test_widgets")
public class TestWidget implements Serializable {
private int id;
private String name;
@Id
@GeneratedValue
@Column
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
@Column
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
TestWidget class is coming from a maven sub-project and the generated JAR also includes persistence.xml:
persistence.xml <?xml version="1.0" encoding="UTF-8"?> <persistence version="1.0" xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd"> <persistence-unit name="provisioningDatabase" transaction-type="RESOURCE_LOCAL"> <provider>org.hibernate.ejb.HibernatePersistence</provider> <jta-data-source>java:comp/env/jdbc/ProvisioningDB</jta-data-source> <class>mypackage.entity.TestWidget</class> <properties> <property name="hibernate.hbm2ddl.auto" value="update"/> <property name="hibernate.show_sql" value="true"/> <property name="hibernate.cache.provider_class" value="org.hibernate.cache.HashtableCacheProvider"/> </properties> </persistence-unit> </persistence>
components.xml <framework:entity-query name="testWidgets" ejbql="select w from TestWidget w" />
@Name("testWidgetHome")
public class TestWidgetHome extends EntityHome<TestWidget> {
@Factory("testWidget")
public TestWidget initModule() {
return getInstance();
}
}
test_widgets.xhtml
<!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:ui="http://java.sun.com/jsf/facelets"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:s="http://jboss.com/products/seam/taglib"
xmlns:a="http://richfaces.org/a4j"
xmlns:rich="http://richfaces.org/rich" template="layout/template.xhtml">
<ui:define name="content">
<h1>Test Widgets</h1>
<h:dataTable id="roles" value="#{testWidgets.resultList}" var="w">
<h:column>
<f:facet name="header">ID</f:facet>
#{w.id}
</h:column>
<h:column>
<f:facet name="header">Name</f:facet>
#{w.name}
</h:column>
<h:column>
<f:facet name="header">Actions</f:facet>
<s:link value="edit" view="/test_widget.xhtml">
<f:param name="twId" value="#{w.id}"/>
</s:link>
</h:column>
</h:dataTable>
<h2>Create Test Widget</h2>
<h:form styleClass="normal-form">
<fieldset>
<s:decorate template="layout/edit.xhtml">
<ui:define name="label">Name:</ui:define>
<h:inputText value="#{testWidget.name}" id="name" required="true"/>
</s:decorate>
</fieldset>
<div><h:commandButton value="Create" action="#{testWidgetHome.persist}"/></div>
</h:form>
</ui:define>
</ui:composition>
test_widget.xhtml
<!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:ui="http://java.sun.com/jsf/facelets"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:s="http://jboss.com/products/seam/taglib"
xmlns:t="http://myfaces.apache.org/tomahawk"
xmlns:a="http://richfaces.org/a4j"
xmlns:platform="http://boats.com/platform/taglib"
xmlns:rich="http://richfaces.org/rich" template="layout/template.xhtml">
<ui:define name="content">
<h1>Test Widget: #{testWidget.id}</h1>
<h:form>
<s:decorate template="layout/edit.xhtml">
<ui:define name="label">Name:</ui:define>
<h:inputText value="#{testWidget.name}" required="true"/>
</s:decorate>
<h:commandButton action="#{testWidgetHome.update}" value="Save"/>
</h:form>
</ui:define>
</ui:composition>
test_widget.page.xml
<page>
<param name="twId" value="#{testWidgetHome.id}" converterId="javax.faces.Integer"/>
</page>
When I run the app on a windows box everything works. When I run it on a Linux box, I can create widgets and see the list of widgets but when I click to see details of a particular widget, I get a screen with no details information. The screen looks like as if I'm trying to create a new widget. #{testWidget.id} shows "0" and "name" textbox is empty. No exception or warnings in a log file. I'm totally puzzled. This is a very basic set-up and everything works fine on a Windows box.
Any clues would be highly appreciated.
Thank you,
Yuriy
