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2 - Extending the Storefront

2 - Extending the Storefront

In the Storefront, Form Bean classes represent the forms a customer fills out. Form Bean classes store the information a user provides before passing the information into the Elastic Path Core.

In this section, you will extend the Storefront and create a T-shirt form bean to store the personalized T-shirt's text.

Creating the personalized T-shirt form bean

To create the T-shirt form bean:

  1. Navigate to the ext-storefront project, found in the extensions/storefront directory.
  2. In the ext-storefront project's src/main/java directory (create java folder if it does not exist), create a new package named com.extensions.tshirt.sfweb.formbean
  3. In com.extensions.tshirt.sfweb.formbean, create an interface named TshirtFormBean and add the following code:
                      CoreTutorial2/tutorial2-ext-storefront/src/main/java/com/extensions/tshirt/sfweb/formbean/TshirtFormBean.java
package com.extensions.tshirt.sfweb.formbean;

import java.util.Map;

import com.elasticpath.common.dto.ShoppingItemDto;
import com.elasticpath.sfweb.formbean.EpFormBean;

/**
 * Defines the form shoppers fill out to personalize their T-shirts.
 */
public interface TshirtFormBean extends EpFormBean {

	/**
	 * Returns a T-shirt's front text.
	 *
	 * @return The T-shirt's front text
	 */
	String getFrontText();

	/**
	 * Sets the T-Shirt's front text.
	 *
	 * @param frontText - a String to set to this property
	 */
	void setFrontText(String frontText);

	/**
	 * Returns a T-shirt's back text.
	 *
	 * @return The T-shirt's back text
	 */
	String getBackText();

	/**
	 * Sets the T-Shirt's back text.
	 *
	 * @param backText - a String to set to this property
	 */
	void setBackText(String backText);

	/**
	 * Returns a map of T-shirt fields.
	 *
	 * @return The fields
	 */
	Map<String, String> getAsItemFields();

	/**
	 * Initializes all T-shirt fields from the fields in the {@code ShoppingItem}.
	 *
	 * @param shoppingItem - The item's ShoppingItemDto
	 */
	void initFromShoppingItemDto(ShoppingItemDto shoppingItem);
}
  4. In com.extensions.tshirt.sfweb.formbean, create a package named impl
  5. In com.extensions.tshirt.sfweb.formbean.impl, create a new class named TshirtFormBeanImpl and add the following code:
                      CoreTutorial2/tutorial2-ext-storefront/src/main/java/com/extensions/tshirt/sfweb/formbean/impl/TshirtFormBeanImpl.java
package com.extensions.tshirt.sfweb.formbean.impl;

import java.util.HashMap;
import java.util.Map;

import com.extensions.tshirt.sfweb.formbean.TshirtFormBean;

import com.elasticpath.common.dto.ShoppingItemDto;
import com.elasticpath.sfweb.formbean.impl.EpFormBeanImpl;

/**
 * Implements {@link TshirtFormBean}.
 */
public class TshirtFormBeanImpl extends EpFormBeanImpl implements TshirtFormBean {

	private static final long serialVersionUID = 1L;

	/**
	 * Key for getting a Tshirt's front text.
	 */
	public  static final String TSHIRT_FRONT_TEXT_KEY = "Front text";

	/**
	 * Key for getting a Tshirt's back text.
	 */
	public static final String TSHIRT_BACK_TEXT_KEY = "Back text";

	private String frontText;
	private String backText;

	@Override
	public String getBackText() {
		return backText;
	}

	@Override
	public String getFrontText() {
		return frontText;
	}

	@Override
	public void setBackText(final String backText) {
		this.backText = backText;
	}

	@Override
	public void setFrontText(final String frontText) {
		this.frontText = frontText;
	}

	@Override
	public Map<String, String> getAsItemFields() {
		HashMap<String, String> map = new HashMap<String, String>();
		map.put(TSHIRT_BACK_TEXT_KEY, this.backText);
		map.put(TSHIRT_FRONT_TEXT_KEY, this.frontText);
		return map;
	}

	@Override
	public void initFromShoppingItemDto(final ShoppingItemDto shoppingItem) {
		if (shoppingItem == null) {
			return;
		}

		Map<String, String> itemFields = shoppingItem.getItemFields();
		this.frontText = itemFields.get(TSHIRT_FRONT_TEXT_KEY);
		this.backText = itemFields.get(TSHIRT_BACK_TEXT_KEY);
	}
}

Extending Storefront Classes

You need to extend a few Storefront classes to include the t-shirt form bean in the checkout process:

ShoppingItemFormBean

The ShoppingItemFormBean is the top level form bean for storing product information.

To include the personalized text fields from the t-shirt form bean:

  1. In com.extensions.tshirt.sfweb.formbean, create an interface named ExtShoppingItemFormBean and add the following code:
                         CoreTutorial2/tutorial2-ext-storefront/src/main/java/com/extensions/tshirt/sfweb/formbean/ExtShoppingItemFormBean.java
package com.extensions.tshirt.sfweb.formbean;

import com.elasticpath.sfweb.formbean.ShoppingItemFormBean;

/**
 * Adds getTshirtFields() method to the ShoppingItemFormBean.
 */
public interface ExtShoppingItemFormBean extends ShoppingItemFormBean {

	/**
	 * Returns the special fields for a T-shirt.
	 *
	 * @return a TshirtFormBean with the T-shirt's fields.
	 */
	TshirtFormBean getTshirtFields();
}
  2. In com.extensions.tshirt.sfweb.formbean.impl create a class named ExtShoppingItemFormBeanImpl and add the following code:
                         CoreTutorial2/tutorial2-ext-storefront/src/main/java/com/extensions/tshirt/sfweb/formbean/impl/ExtShoppingItemFormBeanImpl.java
package com.extensions.tshirt.sfweb.formbean.impl;

import com.extensions.tshirt.sfweb.formbean.ExtShoppingItemFormBean;
import com.extensions.tshirt.sfweb.formbean.TshirtFormBean;

import com.elasticpath.sfweb.formbean.impl.ShoppingItemFormBeanImpl;

/**
 * Implements {@link ExtShoppingItemFormBean}.
 */
public class ExtShoppingItemFormBeanImpl extends ShoppingItemFormBeanImpl implements ExtShoppingItemFormBean {

	private static final long serialVersionUID = 1L;

	private final TshirtFormBean tshirtFormBean = new TshirtFormBeanImpl();

	@Override
	public TshirtFormBean getTshirtFields() {
		return tshirtFormBean;
	}
}

ShoppingItemFormBeanContainerFactoryImpl

The ShoppingItemFormBeanContainerFactoryImpl class builds cart update form beans from the ShoppingItemFormBean.

To create cart update form beans from ExtShoppingItemFormBean:

  1. In the ext-storefront project's src/main/java directory, create a new package named com.extensions.tshirt.sfweb.controller.impl
  2. In com.extensions.tshirt.sfweb.controller.impl, create a class named ExtShoppingItemFormBeanContainerFactoryImpl and add the following code:
                         CoreTutorial2/tutorial2-ext-storefront/src/main/java/com/extensions/tshirt/sfweb/controller/impl/ExtShoppingItemFormBeanContainerFactoryImpl.java
package com.extensions.tshirt.sfweb.controller.impl;

import java.util.Collections;
import java.util.Map;

import com.extensions.tshirt.sfweb.formbean.ExtShoppingItemFormBean;

import com.elasticpath.common.dto.ShoppingItemDto;
import com.elasticpath.domain.catalog.Price;
import com.elasticpath.domain.catalog.Product;
import com.elasticpath.domain.catalog.ProductBundle;
import com.elasticpath.domain.catalogview.StoreProduct;
import com.elasticpath.domain.pricing.PriceAdjustment;
import com.elasticpath.domain.shoppingcart.ShoppingCart;
import com.elasticpath.sfweb.controller.ShoppingItemFormBeanContainerFactory;
import com.elasticpath.sfweb.controller.impl.ShoppingItemFormBeanContainerFactoryImpl;
import com.elasticpath.sfweb.formbean.ShoppingItemFormBean;
import com.elasticpath.sfweb.formbean.ShoppingItemFormBeanContainer;
import com.elasticpath.sfweb.formbean.impl.CartFormBeanImpl;

/**
 * Extended ShoppingItemFormBeanContainerFactoryImpl that utilizes the {@link ExtShoppingItemFormBean}.
 */
public class ExtShoppingItemFormBeanContainerFactoryImpl extends ShoppingItemFormBeanContainerFactoryImpl
		implements ShoppingItemFormBeanContainerFactory {

	@Override
	public ShoppingItemFormBeanContainer createCartFormBean(final StoreProduct storeProduct,
			final int quantity, final ShoppingCart shoppingCart) {
		String defaultSkuCode = storeProduct.getDefaultSku().getSkuCode();

		// BEGIN OVERRIDE ------------------------------------------------------------
		ExtShoppingItemFormBean rootFormBean =
				(ExtShoppingItemFormBean) createShoppingItemFormBean(shoppingCart.getStore(),
						storeProduct, defaultSkuCode, quantity, "", 0, 0);
		rootFormBean.getTshirtFields().initFromShoppingItemDto(null);
		// END OVERRIDE ------------------------------------------------------------

		// by default, the root form bean should always be set to be selected
		rootFormBean.setSelected(true);

		Product product = storeProduct.getWrappedProduct();
		Map<String, PriceAdjustment> priceAdjustmentsForBundle = Collections.emptyMap();

		if (product instanceof ProductBundle) {
			ProductBundle bundle = (ProductBundle) product;
			priceAdjustmentsForBundle = getPriceLookupFacade().getPriceAdjustmentsForBundle(bundle,
					shoppingCart.getStore().getCatalog().getCode(), shoppingCart.getShopper());

			if (bundle.getSelectionRule() != null) {
				rootFormBean.setSelectionRule(bundle.getSelectionRule().getParameter());
			}
			if (bundle.isCalculated()) {
				setPriceAndQuantityForCalculatedBundle(rootFormBean, product, shoppingCart);
			}
		}

		addConstituentShoppingItemFormBeansFromProduct(shoppingCart,
				rootFormBean, storeProduct, "", 1, priceAdjustmentsForBundle);

		ShoppingItemFormBeanContainer cartFormBean = new CartFormBeanImpl();
		cartFormBean.addShoppingItemFormBean(rootFormBean);

		rootFormBean.setMinQty(calculateMinQty(shoppingCart, rootFormBean));

		return cartFormBean;
	}

	private void setPriceAndQuantityForCalculatedBundle(
			final ShoppingItemFormBean rootFormBean, final Product product,
			final ShoppingCart shoppingCart) {
		rootFormBean.setCalculatedBundle(true);
		Price promotedPriceForSku = this.getPriceLookupFacade().getPromotedPriceForSku(
				product.getDefaultSku(), shoppingCart.getStore(),
				shoppingCart.getShopper(), shoppingCart.getAppliedRules());
		if (promotedPriceForSku != null) {
			int firstPriceTierMinQty = promotedPriceForSku.getFirstPriceTierMinQty();
			rootFormBean.setPrice(promotedPriceForSku);
			rootFormBean.setQuantity(firstPriceTierMinQty);
		}
	}

	@Override
	public ShoppingItemFormBeanContainer createCartFormBean(final ShoppingItemDto existingShoppingItemDto,
			final ShoppingCart shoppingCart, final boolean dependent) {

		final StoreProduct storeProduct = findProductByGuid(existingShoppingItemDto.getProductCode(),
				shoppingCart.getStore());

		// BEGIN OVERRIDE ------------------------------------------------------------
		ExtShoppingItemFormBean rootFormBean = (ExtShoppingItemFormBean) createShoppingItemFormBean(
				shoppingCart.getStore(), storeProduct, existingShoppingItemDto.getSkuCode(),
				existingShoppingItemDto.getQuantity(), "", 0,
				existingShoppingItemDto.getShoppingItemUidPk());

		rootFormBean.setDependent(dependent);
		rootFormBean.setPrice(existingShoppingItemDto.getPrice());
		rootFormBean.setTotal(existingShoppingItemDto.getTotal());
		rootFormBean.setSelected(existingShoppingItemDto.isSelected());
		rootFormBean.getGiftCertificateFields().initFromShoppingItemDto(existingShoppingItemDto);
		rootFormBean.getTshirtFields().initFromShoppingItemDto(existingShoppingItemDto);
		// END OVERRIDE ------------------------------------------------------------

		Product product = storeProduct.getWrappedProduct();
		Map<String, PriceAdjustment> priceAdjustmentsForBundle = Collections.emptyMap();

		if (product instanceof ProductBundle) {
			ProductBundle bundle = (ProductBundle) product;
			priceAdjustmentsForBundle = getPriceLookupFacade().getPriceAdjustmentsForBundle(bundle,
					shoppingCart.getStore().getCatalog().getCode(), shoppingCart.getShopper());

			if (bundle.isCalculated()) {
				rootFormBean.setCalculatedBundle(true);
				rootFormBean.setPrice(existingShoppingItemDto.getPrice());
			}
		}

		addConstituentShoppingItemFormBeansFromShoppingItemDto(shoppingCart,
				rootFormBean, existingShoppingItemDto, storeProduct, "", 1, priceAdjustmentsForBundle);

		ShoppingItemFormBeanContainer cartUpdateFormBean = new CartFormBeanImpl();
		cartUpdateFormBean.addShoppingItemFormBean(rootFormBean);

		rootFormBean.setMinQty(calculateMinQty(shoppingCart, rootFormBean));

		return cartUpdateFormBean;
	}
}

ShoppingItemDtoMapper

The ShoppingItemDtoMapper transfers data between the Storefront's ShoppingItemFormBean and the Elastic Path Core's ShoppingItemDto.

To transfer data from ExtShoppingItemFormBean to the ShoppingItemDto:

  • In com.extensions.tshirt.sfweb.controller.impl, create a class named ExtShoppingItemDtoMapperImpl and add the following code:
                         CoreTutorial2/tutorial2-ext-storefront/src/main/java/com/extensions/tshirt/sfweb/controller/impl/ExtShoppingItemDtoMapperImpl.java
package com.extensions.tshirt.sfweb.controller.impl;

import com.extensions.tshirt.sfweb.formbean.ExtShoppingItemFormBean;

import com.elasticpath.common.dto.ShoppingItemDto;
import com.elasticpath.sfweb.controller.impl.ShoppingItemDtoMapperImpl;
import com.elasticpath.sfweb.formbean.ShoppingItemFormBean;

/**
 * Extended Dto mapper that includes mapping for Tshirt fields.
 */
public class ExtShoppingItemDtoMapperImpl extends ShoppingItemDtoMapperImpl {

	@Override
	protected void doItemFieldsMapping(final ShoppingItemDto parentDto, final ShoppingItemFormBean parentBean) {
		parentDto.setItemFields(parentBean.getGiftCertificateFields().getAsItemFields());

		if (parentBean instanceof ExtShoppingItemFormBean) {
			ExtShoppingItemFormBean formBean = (ExtShoppingItemFormBean) parentBean;
			parentDto.setItemFields(formBean.getTshirtFields().getAsItemFields());
		}
	}
}