JarCastingVRaptor-paginator
Installing
Add to your pom:
<dependency>
<groupId>br.com.caelum.vraptor</groupId>
<artifactId>vraptor-paginator</artifactId>
<version>4.0.0-SNAPSHOT</version>
</dependency>
Example with JPA
@Inject
private JPAPaginatedQuery query;
@Get("/{page.number}")
public void home(Page page) {
//this code could be in your DAO
Paginator<Music> paginator = query
.jpql("select m from Music m left join m.musicOwners mo where mo.owner=:user")
.setParameter("user", user).paginate(page);
result.include("paginator", paginator);
}
Example with Hibernate
@Inject
private HibernatePager query;
@Inject
private Session session;
@Get("/{page.number}")
public void home(Page page) {
//this code could be in your DAO
Paginator<Music> paginator = query
.paginate(session.createQuery("select m from Music m left join m.musicOwners mo where mo.owner=:user")
.setParameter("user", user),page);
result.include("paginator", paginator);
}
Usage of Paginator in your view
<paginator:roller pages="${paginator.pages}"/>
This tag just encapsulate a simple foreach. Take a look.
<c:forEach var="page" items="${pages}">
<li class="${page.classes}">
<c:if test="${!page.hasLink() }">${page.content }</c:if>
<c:if test="${page.hasLink() }">
<a href="./${page.content}">${page.content }</a>
</c:if>
</li>
</c:forEach>
It is not complicated, if you need to implement your version of a pagination. The getClasses method is responsible to return a css class that can be applied to the <li> element. VRaptor-paginator has a three different types of a PageDefinition. Let's see the CurrentPage implementation:
public class CurrentPage implements PageDefinition {
private final String content;
public CurrentPage(Integer next) {
this.content = "" + next;
}
@Override
public String getContent() {
return content;
}
@Override
public String getClasses() {
return "pagination-page pagination-current";
}
@Override
public boolean hasLink() {
return false;
}
You can take a look in the other two classes, LinkedPageDefinition and ThreeDotsDefinition.
