my CRUD way, is it right? show yours please!
jboss-seam-1.2.0
jboss-4.0.5.GA
jdk1.5.0_0.8
the following is my way to do CRUD,it works!
but I'm not sure if it will cause some potential problems ,like performance.
please show me yours!
I like seam so much!
package org.kaiak.model;
import java.io.Serializable;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.Table;
import javax.persistence.Version;
import org.hibernate.validator.Length;
import org.jboss.seam.annotations.Name;
@Entity
@Name("permission")
@Table(name = "t_myor_permission")
public class Permission implements Serializable {
//seam-gen attributes (you should probably edit these)
private Long id;
private Integer version;
private String name;
//add additional entity attributes
//seam-gen attribute getters/setters with annotations (you probably should edit)
@Id @GeneratedValue
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
@Version
public Integer getVersion() {
return version;
}
private void setVersion(Integer version) {
this.version = version;
}
@Length(max=20)
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
package org.kaiak.service;
import javax.ejb.Local;
@Local
public interface PermissionManager {
public String persist();
public String edit();
public String delete();
public void findPermissions(); public void destroy();
//add additional interface methods here
}
package org.kaiak.service;
import java.util.List;
import javax.ejb.Remove;
import javax.ejb.Stateful;
import javax.persistence.EntityManager;
import org.jboss.seam.annotations.Begin;
import org.jboss.seam.annotations.Destroy;
import org.jboss.seam.annotations.End;
import org.jboss.seam.annotations.Factory;
import org.jboss.seam.annotations.In;
import org.jboss.seam.annotations.Logger;
import org.jboss.seam.annotations.Name;
import org.jboss.seam.annotations.Out;
import org.jboss.seam.annotations.datamodel.DataModel;
import org.jboss.seam.annotations.datamodel.DataModelSelection;
import org.jboss.seam.core.FacesMessages;
import org.jboss.seam.log.Log;
import org.kaiak.model.Permission;
@Stateful
@Name("permissionManager")
public class PermissionManagerBean implements PermissionManager {
@Logger
private Log log;
@In
FacesMessages facesMessages;
@In
EntityManager entityManager;
@DataModel
private List<Permission> permissionList;
@In(required = false)
@Out(required = false)
private Permission permission;
@DataModelSelection
private Permission selectedPermission;
@Begin
@Factory("permissionList") public void findPermissions() {
permissionList = entityManager.createQuery(
"select perm from Permission perm order by perm.id")
.getResultList();
}
@End(beforeRedirect = true)
public String persist() {
entityManager.persist(permission);
return "list";
}
@End(beforeRedirect = true)
public String delete() {
permission = selectedPermission;
permissionList.remove(permission);
entityManager.remove(permission);
return "list";
}
public String edit() {
if (selectedPermission != null)
permission = selectedPermission;
return "form";
}
@Destroy
@Remove
public void destroy() {
}
}
permissionList.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: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"
template="layout/template.xhtml">
<ui:define name="body">
<h1>permissionList</h1>
<p>Generated list page</p>
<h:messages globalOnly="true" styleClass="message"/>
<h:outputText value="No permission exists"
rendered="#{permissionList.rowCount==0}"/>
<h:dataTable id="permissionList" var="p"
value="#{permissionList}"
rendered="#{permissionList.rowCount>0}">
<h:column>
<f:facet name="header">Id</f:facet>
#{p.id}
</h:column>
<h:column>
<f:facet name="header">Name</f:facet>
<s:link id="permission" value="#{p.name}" action="#{permissionManager.edit}"/>
</h:column>
<h:column>
<f:facet name="header">Action</f:facet>
<s:link id="user" value="Delete" action="#{permissionManager.delete}"/>
</h:column>
</h:dataTable>
<div class="actionButtons"><h3><h:outputText value="#{permission.name}"/></h3>
<s:button id="done" value="Create permission"
action="#{permissionManager.edit}"/>
</div>
</ui:define>
</ui:composition>
permissionForm.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: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"
template="layout/template.xhtml">
<ui:define name="body">
<h1>permissionForm</h1>
<p>Generated edit page</p>
<h:messages globalOnly="true" styleClass="message"/>
<h:form id="perm">
<div class="dialog">
<s:validateAll>
<div class="prop">
<span class="name">Name</span>
<span class="value">
<s:decorate>
<h:inputText id="name" required="true"
value="#{permission.name}"/>
</s:decorate>
</span>
</div>
</s:validateAll>
</div>
<div class="actionButtons">
<h:commandButton id="save" value="Save"
action="#{permissionManager.persist}"/>
<s:button id="done" value="Done"
propagation="end" view="/permissionList.xhtml"/>
</div>
</h:form>
</ui:define>
</ui:composition>
pages.xml <!DOCTYPE pages PUBLIC "-//JBoss/Seam Pages Configuration DTD 1.2//EN" "http://jboss.com/products/seam/pages-1.2.dtd"> <pages no-conversation-view-id="/home.xhtml" login-view-id="/login.xhtml"> <page view-id="*"> <navigation> <rule if-outcome="home"> <redirect view-id="/home.xhtml"/> </rule> </navigation> </page> <page view-id="/permissionList.xhtml"> <navigation> <rule if-outcome="list"> <redirect view-id="/permissionList.xhtml"/> </rule> <rule if-outcome="form"> <redirect view-id="/permissionForm.xhtml"/> </rule> </navigation> </page> <page view-id="/permissionForm.xhtml"> <navigation> <rule if-outcome="list"> <redirect view-id="/permissionList.xhtml"/> </rule> </navigation> </page> <exception class="org.jboss.seam.framework.EntityNotFoundException"> <redirect view-id="/error.xhtml"> <message>Not found</message> </redirect> </exception> <exception class="javax.persistence.EntityNotFoundException"> <redirect view-id="/error.xhtml"> <message>Not found</message> </redirect> </exception> <exception class="javax.persistence.OptimisticLockException"> <end-conversation/> <redirect view-id="/error.xhtml"> <message>Another user changed the same data, please try again</message> </redirect> </exception> <exception class="org.jboss.seam.security.AuthorizationException"> <redirect> <message>You don't have permission to do this</message> </redirect> </exception> <exception class="org.jboss.seam.security.NotLoggedInException"> <redirect view-id="/login.xhtml"> <message>Please log in first</message> </redirect> </exception> <exception> <redirect view-id="/error.xhtml"> <message>Unexpected error, please try again</message> </redirect> </exception> </pages>
