seava.j4e.presenter.service.ServiceLocatorJee.java Source code

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Here is the source code for seava.j4e.presenter.service.ServiceLocatorJee.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.presenter.service;

import seava.j4e.api.service.IServiceLocator;
import seava.j4e.api.service.business.IAsgnTxService;
import seava.j4e.api.service.business.IEntityService;
import seava.j4e.api.service.presenter.IAsgnService;
import seava.j4e.api.service.presenter.IDsService;
import seava.j4e.api.service.presenter.IReportService;

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 ServiceLocatorJee implements ApplicationContextAware, IServiceLocator {

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

    private ApplicationContext applicationContext;

    @Override
    public <M, F, P> IDsService<M, F, P> findDsService(Class<?> modelClass) throws Exception {
        // return this.findDsService(modelClass.getSimpleName());
        return this.findDsService((String) modelClass.getField("ALIAS").get(null));
    }

    /**
     * Find a data-source service given the data-source name
     * 
     * @param <M>
     * @param <P>
     * @param dsName
     * @return
     * @throws Exception
     */
    @SuppressWarnings("unchecked")
    @Override
    public <M, F, P> IDsService<M, F, P> findDsService(String dsName) throws Exception {
        if (logger.isDebugEnabled()) {
            logger.debug("Looking for ds-service `" + dsName + "`");
        }
        IDsService<M, F, P> srv = (IDsService<M, F, P>) this.applicationContext.getBean(dsName);
        if (srv == null && this.applicationContext.getParent() != null) {
            srv = (IDsService<M, F, P>) this.applicationContext.getParent().getBean(dsName);
        }

        if (srv == null) {
            throw new Exception("Ds-service `" + dsName + "` not found !");
        }
        return srv;
    }

    /**
     * Find a report service given its spring bean alias factories.
     * 
     * @param reportServiceAlias
     * @return
     * @throws Exception
     */
    @Override
    public IReportService findReportService(String reportServiceAlias) throws Exception {
        if (logger.isDebugEnabled()) {
            logger.debug("Looking for ds-service `" + reportServiceAlias + "`");
        }
        IReportService srv = (IReportService) this.applicationContext.getBean(reportServiceAlias);
        if (srv == null && this.applicationContext.getParent() != null) {
            srv = (IReportService) this.applicationContext.getParent().getBean(reportServiceAlias);
        }

        if (srv == null) {
            throw new Exception("Report-service `" + reportServiceAlias + "` not found !");
        }
        return srv;
    }

    /**
     * Find an entity service given the entity class and a list of factories.
     * 
     * @param <E>
     * @param entityClass
     * @param factories
     * @return
     * @throws Exception
     */
    @SuppressWarnings("unchecked")
    @Override
    public <E> IEntityService<E> findEntityService(Class<E> entityClass) throws Exception {
        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 Exception("Entity service `" + serviceAlias + "` not found");
        }
        return srv;
    }

    /**
     * Find an assignment service given the service name and the list of
     * factories.
     * 
     * @param <M>
     * @param <P>
     * @param asgnName
     * @param factories
     * @return
     * @throws Exception
     */
    @SuppressWarnings("unchecked")
    @Override
    public <M, F, P> IAsgnService<M, F, P> findAsgnService(String asgnName) throws Exception {

        if (logger.isDebugEnabled()) {
            logger.debug("Looking for assignment service `" + asgnName + "`");
        }

        IAsgnService<M, F, P> srv = (IAsgnService<M, F, P>) this.applicationContext.getBean(asgnName);
        if (srv == null && this.applicationContext.getParent() != null) {
            srv = (IAsgnService<M, F, P>) this.applicationContext.getParent().getBean(asgnName);
        }

        if (srv == null) {
            throw new Exception("Assignment service `" + asgnName + "` not found !");
        }
        return srv;
    }

    @Override
    public <E> IAsgnTxService<E> findAsgnTxService(String asgnName) throws Exception {

        return this.findAsgnTxService(asgnName, null);
    }

    /**
     * Find an business assignment service given the service name and the list
     * of factories.
     * 
     * @param <M>
     * @param <P>
     * @param asgnName
     * @param factories
     * @return
     * @throws Exception
     */

    @SuppressWarnings("unchecked")
    @Override
    public <E> IAsgnTxService<E> findAsgnTxService(String asgnName, String factoryName) throws Exception {

        if (logger.isDebugEnabled()) {
            logger.debug("Looking for business assignment service `" + asgnName + "`");
        }

        IAsgnTxService<E> srv = (IAsgnTxService<E>) this.applicationContext.getBean(asgnName, IAsgnTxService.class);
        if (srv == null && this.applicationContext.getParent() != null) {
            srv = (IAsgnTxService<E>) this.applicationContext.getParent().getBean(asgnName, IAsgnTxService.class);
        }

        if (srv == null) {
            throw new Exception("Business assignment service `" + asgnName + "` 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;
    }

}