org.granite.client.tide.spring.ViewScope.java Source code

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Here is the source code for org.granite.client.tide.spring.ViewScope.java

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/*
  GRANITE DATA SERVICES
  Copyright (C) 2012 GRANITE DATA SERVICES S.A.S.
    
  This file is part of Granite Data Services.
    
  Granite Data Services is free software; you can redistribute it and/or modify
  it under the terms of the GNU Library General Public License as published by
  the Free Software Foundation; either version 2 of the License, or (at your
  option) any later version.
    
  Granite Data Services is distributed in the hope that it will be useful, but
  WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License
  for more details.
    
  You should have received a copy of the GNU Library General Public License
  along with this library; if not, see <http://www.gnu.org/licenses/>.
*/

package org.granite.client.tide.spring;

import org.granite.client.tide.ViewScope.BeanResetter;
import org.granite.client.tide.ViewScopeHolder;
import org.springframework.beans.factory.ObjectFactory;
import org.springframework.beans.factory.config.Scope;

/**
 * @author William DRAI
 */
public class ViewScope implements Scope {

    // private static final Logger log = Logger.getLogger(ViewScope.class);

    private org.granite.client.tide.ViewScope beanCache;

    public ViewScope() {
    }

    private org.granite.client.tide.ViewScope getBeanCache() {
        if (beanCache == null) {
            beanCache = ViewScopeHolder.get();
            if (beanCache == null)
                throw new RuntimeException("View bean cache not set");
        }
        return beanCache;
    }

    @Override
    public String getConversationId() {
        return getBeanCache().getViewId();
    }

    @Override
    public Object get(String name, ObjectFactory<?> objectFactory) {
        Object instance = getBeanCache().get(name);
        if (instance == null) {
            instance = objectFactory.getObject();
            getBeanCache().put(name, instance);
        }
        return instance;
    }

    @Override
    public Object resolveContextualObject(String name) {
        return getBeanCache().get(name);
    }

    @Override
    public void registerDestructionCallback(String name, final Runnable callback) {
        getBeanCache().addResetter(name, new BeanResetter() {
            @Override
            public void reset(Object instance) {
                callback.run();
            }
        });
    }

    @Override
    public Object remove(String name) {
        return getBeanCache().remove(name);
    }

}