package org.jboss.seam.faces;
import static org.jboss.seam.ScopeType.STATELESS;
import static org.jboss.seam.annotations.Install.BUILT_IN;
import java.util.List;
import java.util.Map;
import java.util.Set;
import javax.faces.model.DataModel;
import org.jboss.seam.Component;
import org.jboss.seam.ScopeType;
import org.jboss.seam.annotations.Install;
import org.jboss.seam.annotations.Name;
import org.jboss.seam.annotations.Scope;
import org.jboss.seam.annotations.intercept.BypassInterceptors;
import org.jboss.seam.framework.Query;
import org.jboss.seam.jsf.ArrayDataModel;
import org.jboss.seam.jsf.ListDataModel;
import org.jboss.seam.jsf.MapDataModel;
import org.jboss.seam.jsf.SetDataModel;
/**
* Wraps a collection as a JSF {@link DataModel}. May be overridden
* and extended if you don't like the built in collections
* which are supported: list, map, set, array.
*
* @author pmuir
*/
@Name("org.jboss.seam.faces.dataModels")
@Install(precedence=BUILT_IN, classDependencies="javax.faces.context.FacesContext")
@Scope(STATELESS)
@BypassInterceptors
public class DataModels
{
/**
* Wrap the value in a DataModel
*
* This implementation supports {@link List}, {@link Map}, {@link Set} and
* arrays
*/
public DataModel getDataModel(Object value)
{
if (value instanceof List)
{
return new ListDataModel( (List) value );
}
else if (value instanceof Object[])
{
return new ArrayDataModel( (Object[]) value );
}
else if (value instanceof Map)
{
return new MapDataModel( (Map) value );
}
else if (value instanceof Set)
{
return new SetDataModel( (Set) value );
}
else
{
throw new IllegalArgumentException("unknown collection type: " + value.getClass());
}
}
/**
* Wrap the the Seam Framework {@link Query} in a JSF DataModel
*/
public DataModel getDataModel(Query query)
{
return getDataModel( query.getResultList() );
}
public static DataModels instance()
{
return (DataModels) Component.getInstance(DataModels.class, ScopeType.STATELESS);
}
}