org.qi4j.library.spring.bootstrap.internal.application.Qi4jApplicationFactoryBean.java Source code

Introduction

Here is the source code for org.qi4j.library.spring.bootstrap.internal.application.Qi4jApplicationFactoryBean.java

Source

/*  Copyright 2008 Edward Yakop.
 *
 * 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.qi4j.library.spring.bootstrap.internal.application;

import org.qi4j.api.structure.Application;
import org.qi4j.bootstrap.ApplicationAssembler;
import org.qi4j.bootstrap.ApplicationAssembly;
import org.qi4j.bootstrap.ApplicationAssemblyFactory;
import org.qi4j.bootstrap.AssemblyException;
import org.qi4j.bootstrap.Energy4Java;
import org.qi4j.library.spring.bootstrap.Qi4jApplicationBootstrap;
import org.qi4j.spi.structure.ApplicationSPI;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.BeanInitializationException;
import org.springframework.beans.factory.DisposableBean;
import org.springframework.beans.factory.FactoryBean;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.util.Assert;

/**
 * This class responsible to handle the lifecycle of qi4j application.
 */
public final class Qi4jApplicationFactoryBean
        implements FactoryBean, DisposableBean, InitializingBean, ApplicationContextAware {

    private final Qi4jApplicationBootstrap applicationBootstrap;

    private ApplicationSPI application;

    public Qi4jApplicationFactoryBean(final Qi4jApplicationBootstrap applicationBootstrap) {
        Assert.notNull(applicationBootstrap, "'applicationBootstrap' must not be null");
        this.applicationBootstrap = applicationBootstrap;
    }

    public final ApplicationSPI getObject() throws Exception {
        if (this.application == null) {
            this.application = this.createApplication();
        }
        return this.application;
    }

    public final Class<Application> getObjectType() {
        return Application.class;
    }

    public final boolean isSingleton() {
        return true;
    }

    public final void destroy() throws Exception {
        this.getObject().passivate();
    }

    public final void afterPropertiesSet() throws Exception {
        this.getObject().activate();
    }

    private ApplicationSPI createApplication() {
        Energy4Java energy4Java = new Energy4Java();
        try {
            return energy4Java.newApplication(new ApplicationAssembler() {

                public ApplicationAssembly assemble(ApplicationAssemblyFactory applicationFactory)
                        throws AssemblyException {
                    final ApplicationAssembly applicationAssembly = applicationFactory.newApplicationAssembly();
                    Qi4jApplicationFactoryBean.this.applicationBootstrap.assemble(applicationAssembly);
                    return applicationAssembly;
                }
            });
        } catch (AssemblyException e) {
            throw new BeanInitializationException("Fail to bootstrap qi4j application.", e);
        }

    }

    public void setApplicationContext(final ApplicationContext applicationContext) throws BeansException {
        if (this.applicationBootstrap instanceof ApplicationContextAware) {
            // propagate application context to the application bootstrap
            ApplicationContextAware aware = (ApplicationContextAware) this.applicationBootstrap;
            aware.setApplicationContext(applicationContext);
        }
    }
}