com.exxonmobile.ace.hybris.storefront.history.impl.DefaultBrowseHistory.java Source code

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Here is the source code for com.exxonmobile.ace.hybris.storefront.history.impl.DefaultBrowseHistory.java

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/*
 * [y] hybris Platform
 *
 * Copyright (c) 2000-2013 hybris AG
 * All rights reserved.
 *
 * This software is the confidential and proprietary information of hybris
 * ("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 hybris.
 * 
 *  
 */
package com.exxonmobile.ace.hybris.storefront.history.impl;

import de.hybris.platform.servicelayer.session.SessionService;
import com.exxonmobile.ace.hybris.storefront.history.BrowseHistory;
import com.exxonmobile.ace.hybris.storefront.history.BrowseHistoryEntry;

import java.util.LinkedList;
import java.util.List;

import org.springframework.beans.factory.annotation.Required;

/**
 * Default implementation of history browsing service.
 */
public class DefaultBrowseHistory implements BrowseHistory {
    private static final String SESSION_USER_BROWSE_HISTORY_KEY = "sessionUserBrowseHistory";

    private SessionService sessionService;
    private int capacity = 10;

    protected SessionService getSessionService() {
        return sessionService;
    }

    @Required
    public void setSessionService(final SessionService sessionService) {
        this.sessionService = sessionService;
    }

    protected int getCapacity() {
        return capacity;
    }

    @Required
    public void setCapacity(final int capacity) {
        this.capacity = capacity;
    }

    @Override
    public void addBrowseHistoryEntry(final BrowseHistoryEntry browseHistoryEntry) {
        final List<BrowseHistoryEntry> browseHistoryEntries = getBrowseHistoryEntries();
        browseHistoryEntries.add(0, browseHistoryEntry);
        trimHistory(browseHistoryEntries);
        saveHistory(browseHistoryEntries);
    }

    protected List<BrowseHistoryEntry> getBrowseHistoryEntries() {
        final List<BrowseHistoryEntry> browseHistoryEntries = new LinkedList<BrowseHistoryEntry>();
        final Object history = getSessionService().getAttribute(SESSION_USER_BROWSE_HISTORY_KEY);
        if ((history instanceof List)) {
            browseHistoryEntries.addAll((List) history);
        }
        return browseHistoryEntries;
    }

    protected void trimHistory(final List<BrowseHistoryEntry> browseHistoryEntries) {
        while (browseHistoryEntries.size() > getCapacity()) {
            ((LinkedList) browseHistoryEntries).removeLast();
        }
    }

    protected void saveHistory(final List<BrowseHistoryEntry> browseHistoryEntries) {
        getSessionService().setAttribute(SESSION_USER_BROWSE_HISTORY_KEY, browseHistoryEntries);
    }

    @Override
    public BrowseHistoryEntry findUrlInHistory(final String url) {
        for (final BrowseHistoryEntry entry : getBrowseHistoryEntries()) {
            final String[] parts = entry.getUrl().split("/");
            if (parts.length > 0 && url.compareTo(parts[parts.length - 1]) == 0) {
                return entry;
            }
        }
        return null;
    }
}