ProvidesEditingOfMixin.java

package org.qi4j.library.struts2.support.edit;

import org.qi4j.api.injection.scope.This;
import org.qi4j.library.struts2.support.ProvidesEntityOfMixin;

import static org.qi4j.library.struts2.util.ParameterizedTypes.findTypeVariables;

public abstract class ProvidesEditingOfMixin<T>
    extends ProvidesEntityOfMixin<T>
    implements ProvidesEditingOf<T>
{

    @This
    private ProvidesEditingOf<T> action;

    @Override
    public void prepare()
        throws Exception
    {
        loadEntity();
    }

    @Override
    public void prepareInput()
        throws Exception
    {

    }

    @Override
    public String input()
    {
        if( getEntity() == null )
        {
            return "entity-not-found";
        }
        return INPUT;
    }

    @Override
    protected Class<T> typeToLoad()
    {
        return (Class<T>) findTypeVariables( action.getClass(), ProvidesEditingOf.class )[ 0 ];
    }
}