org.guzz.web.context.spring.GuzzServiceFactoryBean.java Source code

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Here is the source code for org.guzz.web.context.spring.GuzzServiceFactoryBean.java

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/*
 * Copyright 2008-2009 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */
package org.guzz.web.context.spring;

import org.guzz.GuzzContext;
import org.guzz.Service;
import org.guzz.exception.GuzzException;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.config.AbstractFactoryBean;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;

/**
 * 
 * Helper class to export a guzz service as a spring bean.
 * 
 * <p>Perform {@link ApplicationContextAware#setApplicationContext(applicationContext)} if the service implements {@link ApplicationContextAware}</p>
 *
 * @author liu kaixuan(liukaixuan@gmail.com)
 */
public class GuzzServiceFactoryBean extends AbstractFactoryBean implements ApplicationContextAware {

    private GuzzContext guzzContext;

    private ApplicationContext applicationContext;

    private String serviceName;

    private Service service;

    protected Object createInstance() throws Exception {
        if (guzzContext == null) {
            guzzContext = (GuzzContext) this.getBeanFactory().getBean("guzzContext");
        }

        if (guzzContext == null) {
            throw new GuzzException("guzzContext not found. put guzzContext bean in front of this bean.");
        }

        service = guzzContext.getService(serviceName);

        if (service == null) {
            throw new GuzzException("service not found. service name is:" + this.serviceName);
        }

        if (service instanceof ApplicationContextAware) {
            ((ApplicationContextAware) service).setApplicationContext(applicationContext);
        }

        return service;
    }

    public Class getObjectType() {
        return service.getClass();
    }

    public GuzzContext getGuzzContext() {
        return guzzContext;
    }

    public void setGuzzContext(GuzzContext guzzContext) {
        this.guzzContext = guzzContext;
    }

    public String getServiceName() {
        return serviceName;
    }

    public void setServiceName(String serviceName) {
        this.serviceName = serviceName;
    }

    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        this.applicationContext = applicationContext;
    }

}