seava.j4e.business.service.ServiceLocatorBusinessJee.java Source code

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Here is the source code for seava.j4e.business.service.ServiceLocatorBusinessJee.java

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/** 
 * DNet eBusiness Suite
 * Copyright: 2013 Nan21 Electronics SRL. All rights reserved.
 * Use is subject to license terms.
 */
package seava.j4e.business.service;

import seava.j4e.api.exceptions.BusinessException;
import seava.j4e.api.exceptions.ErrorCode;
import seava.j4e.api.service.IServiceLocatorBusiness;
import seava.j4e.api.service.business.IEntityService;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;

/**
 * Service locator utility methods.
 * 
 * @author amathe
 */
public class ServiceLocatorBusinessJee implements ApplicationContextAware, IServiceLocatorBusiness {

    final static Logger logger = LoggerFactory.getLogger(ServiceLocatorBusinessJee.class);

    private ApplicationContext applicationContext;

    /**
     * Find an entity service given the entity class.
     * 
     * @param <E>
     * @param entityClass
     * @return
     * @throws BusinessException
     */
    @Override
    @SuppressWarnings("unchecked")
    public <E> IEntityService<E> findEntityService(Class<E> entityClass) throws BusinessException {
        String serviceAlias = entityClass.getSimpleName();
        if (logger.isDebugEnabled()) {
            logger.debug("Looking for entity-service `" + serviceAlias + "`");
        }

        IEntityService<E> srv = (IEntityService<E>) this.applicationContext.getBean(serviceAlias);
        if (srv == null && this.applicationContext.getParent() != null) {
            srv = (IEntityService<E>) this.applicationContext.getParent().getBean(serviceAlias);
        }

        if (srv == null) {
            throw new BusinessException(ErrorCode.G_RUNTIME_ERROR,
                    "Entity service `" + serviceAlias + "` not found");
        }
        return srv;
    }

    /**
     * Getter for the spring application context.
     * 
     * @return
     */
    public ApplicationContext getApplicationContext() {
        return applicationContext;
    }

    /**
     * Setter for the spring application context.
     */
    public void setApplicationContext(ApplicationContext applicationContext) {
        this.applicationContext = applicationContext;
    }
}