com.epam.cme.storefront.interceptors.beforecontroller.SetLanguageBeforeControllerHandler.java Source code

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Here is the source code for com.epam.cme.storefront.interceptors.beforecontroller.SetLanguageBeforeControllerHandler.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.epam.cme.storefront.interceptors.beforecontroller;

import de.hybris.platform.commerceservices.i18n.LanguageResolver;
import de.hybris.platform.core.model.c2l.LanguageModel;
import de.hybris.platform.servicelayer.i18n.CommonI18NService;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.lang.StringUtils;
import org.apache.log4j.Logger;
import org.springframework.web.bind.annotation.RequestMethod;

/**
 * Allow the language to be changed per request.
 */
public class SetLanguageBeforeControllerHandler implements BeforeControllerHandler {
    private static final Logger LOG = Logger.getLogger(SetLanguageBeforeControllerHandler.class);

    public static final String DEFAULT_LANG_PARAM = "lang";

    @Resource(name = "languageResolver")
    private LanguageResolver languageResolver;

    @Resource(name = "commonI18NService")
    private CommonI18NService commonI18NService;

    private String languageParameter = DEFAULT_LANG_PARAM;

    protected String getLanguageParameter() {
        return languageParameter;
    }

    // Optional - defaults to DEFAULT_LANG_PARAM
    public void setLanguageParameter(final String paramKey) {
        this.languageParameter = paramKey;
    }

    @Override
    public boolean beforeController(final HttpServletRequest request, final HttpServletResponse response) {
        if (isGetMethod(request)) {
            final String languageIdentifier = request.getParameter(languageParameter);
            if (StringUtils.isNotBlank(languageIdentifier)) {
                try {
                    final LanguageModel languageModel = languageResolver.getLanguage(languageIdentifier);
                    commonI18NService.setCurrentLanguage(languageModel);
                } catch (final IllegalArgumentException ile) {
                    LOG.warn("Can not set session language to [" + languageIdentifier + "]. " + ile.getMessage());
                    if (LOG.isDebugEnabled()) {
                        LOG.debug("Exception setting the language", ile);
                    }
                }
            }
        }
        return true;
    }

    protected boolean isGetMethod(final HttpServletRequest request) {
        return RequestMethod.GET.name().equalsIgnoreCase(request.getMethod());
    }
}