com.onehippo.gogreen.jaxrs.services.TopProductsResource.java Source code

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Here is the source code for com.onehippo.gogreen.jaxrs.services.TopProductsResource.java

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/*
 *  Copyright 2010 Hippo.
 * 
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 * 
 *       http://www.apache.org/licenses/LICENSE-2.0
 * 
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */
package com.onehippo.gogreen.jaxrs.services;

import java.util.ArrayList;
import java.util.List;

import javax.jcr.Node;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.ws.rs.DefaultValue;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.QueryParam;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.UriInfo;

import org.apache.commons.lang.StringUtils;
import org.apache.commons.lang.math.NumberUtils;
import org.hippoecm.hst.content.beans.query.HstQuery;
import org.hippoecm.hst.content.beans.query.HstQueryManager;
import org.hippoecm.hst.content.beans.query.HstQueryResult;
import org.hippoecm.hst.content.beans.standard.HippoBeanIterator;
import org.hippoecm.hst.core.request.HstRequestContext;
import org.hippoecm.hst.jaxrs.services.AbstractResource;
import org.hippoecm.hst.util.PathUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.onehippo.gogreen.beans.Product;
import com.onehippo.gogreen.jaxrs.model.ProductLinkRepresentation;

/**
 * @version $Id$
 */
@Path("/topproducts/")
public class TopProductsResource extends AbstractResource {

    private static Logger log = LoggerFactory.getLogger(TopProductsResource.class);

    @GET
    @Path("/")
    public List<ProductLinkRepresentation> getProductResources(@Context HttpServletRequest servletRequest,
            @Context HttpServletResponse servletResponse, @Context UriInfo uriInfo,
            @QueryParam("sortby") @DefaultValue("hippogogreen:rating") String sortBy,
            @QueryParam("sortdir") @DefaultValue("descending") String sortDirection,
            @QueryParam("max") @DefaultValue("10") String maxParam) {

        List<ProductLinkRepresentation> productRepList = new ArrayList<ProductLinkRepresentation>();
        HstRequestContext requestContext = getRequestContext(servletRequest);

        try {
            String mountContentPath = requestContext.getResolvedMount().getMount().getContentPath();
            Node mountContentNode = requestContext.getSession().getRootNode()
                    .getNode(PathUtils.normalizePath(mountContentPath));

            HstQueryManager manager = getHstQueryManager(requestContext.getSession(), requestContext);
            HstQuery hstQuery = manager.createQuery(mountContentNode, Product.class, true);

            if (!StringUtils.isBlank(sortBy)) {
                if (StringUtils.equals("descending", sortDirection)) {
                    hstQuery.addOrderByDescending(sortBy);
                } else {
                    hstQuery.addOrderByAscending(sortBy);
                }
            }

            hstQuery.setLimit(NumberUtils.toInt(maxParam, 10));

            HstQueryResult result = hstQuery.execute();
            HippoBeanIterator iterator = result.getHippoBeans();

            while (iterator.hasNext()) {
                Product productBean = (Product) iterator.nextHippoBean();

                if (productBean != null) {
                    ProductLinkRepresentation productRep = new ProductLinkRepresentation(requestContext)
                            .represent(productBean);
                    productRep.addLink(getNodeLink(requestContext, productBean));
                    productRep.addLink(getSiteLink(requestContext, productBean));
                    productRepList.add(productRep);
                }
            }
        } catch (Exception e) {
            if (log.isDebugEnabled()) {
                log.warn("Failed to retrieve top products.", e);
            } else {
                log.warn("Failed to retrieve top products. {}", e.toString());
            }

            throw new WebApplicationException(e);
        }

        return productRepList;
    }

}