How to create a DAO, a service, and a facade in Hybris?

We will be extending the ProductFacade to create our own facade to add a method to the ProductFacade. And also because we are extending the Product Facade, we will not be needing to create a populator, we can just the OOTB populator.

Creating the DAO

Define the Bean

Inside <my>core-spring.xml, create the following bean:

<alias name="myProductsDao" alias="productDao" />
<bean id="myProductsDao" class="com.my.core.daos.impl.DefaultMyProductDao" parent="defaultProductDao" />

Create the DAO Interface

package com.my.core.daos;

import de.hybris.platform.core.model.product.ProductModel;
import de.hybris.platform.core.model.user.CustomerModel;
import de.hybris.platform.product.daos.ProductDao;

import java.util.List;

public interface MyProductDao extends ProductDao {
    List findProductsPlacedByCustomer(CustomerModel customer);
}

Create the DAOImpl

package com.my.core.daos.impl;

import com.my.core.daos.MyProductDao;
import de.hybris.platform.core.model.order.OrderEntryModel;
import de.hybris.platform.core.model.order.OrderModel;
import de.hybris.platform.core.model.product.ProductModel;
import de.hybris.platform.core.model.user.CustomerModel;
import de.hybris.platform.product.daos.impl.DefaultProductDao;
import de.hybris.platform.servicelayer.search.SearchResult;
import org.apache.commons.lang.StringUtils;
import org.apache.log4j.Logger;

import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import static de.hybris.platform.servicelayer.util.ServicesUtil.validateParameterNotNull;

public class DefaultMyProductDao extends DefaultProductDao implements MyProductDao {

    private static final Logger LOG = Logger.getLogger(DefaultMyProductDao.class);

    public DefaultMyProductDao(String typecode) {
        super(typecode);
    }

    @Override
    public List findProductsPlacedByCustomer(CustomerModel customer) {
        // ... Implementation
        return result;
    }
}

Createing the Service

Define the Bean

Inside <my>core-spring.xml, create the following bean:

<alias alias="productService" name="myProductService"/>
<bean id="myProductService" class="com.my.core.product.impl.MyProductServiceImpl" parent="defaultProductService" />

Create the Service Interface

package com.my.core.product;

import de.hybris.platform.core.model.product.ProductModel;
import de.hybris.platform.core.model.user.CustomerModel;
import de.hybris.platform.product.ProductService;

import java.util.List;

public interface MyProductService extends ProductService {
    List getProductsPlacedByCustomer(CustomerModel customer);
}

Create the ServiceImpl

package com.my.core.product.impl;

import com.my.core.daos.MyProductDao;
import com.my.core.product.MyProductService;
import de.hybris.platform.core.model.product.ProductModel;
import de.hybris.platform.core.model.user.CustomerModel;
import de.hybris.platform.product.impl.DefaultProductService;

import javax.annotation.Resource;
import java.util.List;

import static de.hybris.platform.servicelayer.util.ServicesUtil.validateParameterNotNull;

public class MyProductServiceImpl extends DefaultProductService implements MyProductService {

    @Resource
    private MyProductDao productDao;

    @Override
    public List getProductsPlacedByCustomer(CustomerModel customer) {
        validateParameterNotNull(customer, "Customer model cannot be null");

        return getProductDao().findProductsPlacedByCustomer(customer);
    }

    @Override
    protected MyProductDao getProductDao()
    {
        return productDao;
    }
}

Creating the Facade

Define the Bean

Inside <my>facades-spring.xml, create the following bean:

<alias name="myProductVariantFacade" alias="productVariantFacade"/>
<bean id="myProductVariantFacade" class="com.my.facades.product.impl.MyProductVariantFacadeImpl" parent="defaultProductVariantFacade" />

Create the Facade Interface

package com.my.facades.product;

import de.hybris.platform.commercefacades.product.ProductFacade;
import de.hybris.platform.commercefacades.product.data.ProductData;

import java.util.List;

public interface MyProductVariantFacade extends ProductFacade {
    List getProductsPlacedByCustomer();
}

Create the FacadeImpl

package com.my.facades.product.impl;

import com.my.core.product.MyProductService;
import com.my.facades.product.MyProductVariantFacade;
import de.hybris.platform.commercefacades.product.data.ProductData;
import de.hybris.platform.commercefacades.product.impl.DefaultProductVariantFacade;
import de.hybris.platform.core.model.product.ProductModel;
import de.hybris.platform.core.model.user.CustomerModel;

import javax.annotation.Resource;
import java.util.List;

public class MyProductVariantFacadeImpl extends DefaultProductVariantFacade implements MyProductVariantFacade {

    @Resource
    private MyProductService productService;

    @Override
    protected MyProductService getProductService() {
        return productService;
    }

    @Override
    public List getProductsPlacedByCustomer() {

        List products = getProductService().getProductsPlacedByCustomer((CustomerModel) getUserService().getCurrentUser());

        return getProductConverter().convertAll(products);
    }
}