de.hybris.platform.acceleratorstorefrontcommons.strategy.impl.MergingCartRestorationStrategy.java Source code

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Here is the source code for de.hybris.platform.acceleratorstorefrontcommons.strategy.impl.MergingCartRestorationStrategy.java

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/*
 * [y] hybris Platform
 *
 * Copyright (c) 2017 SAP SE or an SAP affiliate company.  All rights reserved.
 *
 * This software is the confidential and proprietary information of SAP
 * ("Confidential Information"). You shall not disclose such Confidential
 * Information and shall use it only in accordance with the terms of the
 * license agreement you entered into with SAP.
 */
package de.hybris.platform.acceleratorstorefrontcommons.strategy.impl;

import de.hybris.platform.acceleratorstorefrontcommons.constants.WebConstants;
import de.hybris.platform.commerceservices.order.CommerceCartMergingException;
import de.hybris.platform.commerceservices.order.CommerceCartRestorationException;

import java.util.Arrays;

import javax.servlet.http.HttpServletRequest;

import org.apache.commons.lang.StringUtils;
import org.apache.log4j.Logger;

/**
 * Strategy for cart restoration and merging.
 */
public class MergingCartRestorationStrategy extends DefaultCartRestorationStrategy {
    private static final Logger LOG = Logger.getLogger(MergingCartRestorationStrategy.class);

    @Override
    public void restoreCart(final HttpServletRequest request) {
        // no need to merge if current cart has no entry
        if (!getCartFacade().hasEntries()) {
            super.restoreCart(request);
        } else {
            final String sessionCartGuid = getCartFacade().getSessionCartGuid();
            final String mostRecentSavedCartGuid = getMostRecentSavedCartGuid(sessionCartGuid);
            if (StringUtils.isNotEmpty(mostRecentSavedCartGuid)) {
                getSessionService().setAttribute(WebConstants.CART_RESTORATION_SHOW_MESSAGE, Boolean.TRUE);
                try {
                    getSessionService().setAttribute(WebConstants.CART_RESTORATION,
                            getCartFacade().restoreCartAndMerge(mostRecentSavedCartGuid, sessionCartGuid));
                    request.setAttribute(WebConstants.CART_MERGED, Boolean.TRUE);
                } catch (final CommerceCartRestorationException e) {
                    if (LOG.isDebugEnabled()) {
                        LOG.debug(e);
                    }
                    getSessionService().setAttribute(WebConstants.CART_RESTORATION_ERROR_STATUS,
                            WebConstants.CART_RESTORATION_ERROR_STATUS);
                } catch (final CommerceCartMergingException e) {
                    LOG.error("User saved cart could not be merged", e);
                }
            }
        }
    }

    /**
     * Determine the most recent saved cart of a user for the site that is not the current session cart. The current
     * session cart is already owned by the user and for the merging functionality to work correctly the most recently
     * saved cart must be determined. getMostRecentCartGuidForUser(excludedCartsGuid) returns the cart guid which is
     * ordered by modified time and is not the session cart.
     *
     * @param currentCartGuid
     * @return most recently saved cart guid
     */
    protected String getMostRecentSavedCartGuid(final String currentCartGuid) {
        return getCartFacade().getMostRecentCartGuidForUser(Arrays.asList(currentCartGuid));
    }
}