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Rev 2669 Rev 2670
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        Query q = new Query("DataLog");
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        Query q = new Query("DataLog");
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        q.addFilter("eventType", Query.FilterOperator.EQUAL, "PRODUCT_COMPARE");
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        q.addFilter("eventType", Query.FilterOperator.EQUAL, "PRODUCT_COMPARE");
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        PreparedQuery pq = datastore.prepare(q);
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        PreparedQuery pq = datastore.prepare(q);
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        Map<Long, Map<Long, Long>> comparisonStats = new HashMap<Long, Map<Long, Long>>();
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        Map<Long, Map<Long, Long>> comparisonStats = new HashMap<Long, Map<Long, Long>>();
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        try {
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        try {
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            for (Entity result : pq.asIterable()) {
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            for (Entity result : pq.asIterable()) {
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            	List<Long> itemIds;
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            	try{
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                List<Long> itemIds =  (List<Long>) result.getProperty("itemIds");
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            		itemIds =  (List<Long>) result.getProperty("itemIds");
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            	}catch (ClassCastException ce) {
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					System.out.println("Unable to cast itemIds to List");
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					continue;
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				}
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                if(itemIds != null && !itemIds.isEmpty()){
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                if(itemIds != null && !itemIds.isEmpty()){
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                	for(int i=0; i<itemIds.size(); i++){
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                	for(int i=0; i<itemIds.size(); i++){
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                		for(int j=0; j<i; j++){
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                		for(int j=0; j<i; j++){
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                			Long itemOne = itemIds.get(i);
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                			Long itemOne = itemIds.get(i);
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                			Long itemTwo = itemIds.get(j);
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                			Long itemTwo = itemIds.get(j);
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                				comparedItems.put(itemOne, 1L);
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                				comparedItems.put(itemOne, 1L);
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                			}
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                			}
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                		}
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                		}
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                	}
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                	}
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                }
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                }
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                //resp.getWriter().println(comparisonStats);
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            }
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            }
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            JSONObject comparisonStatsJson = new JSONObject(comparisonStats);
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            JSONObject comparisonStatsJson = new JSONObject(comparisonStats);
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            resp.getWriter().println(comparisonStatsJson);
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            resp.getWriter().println(comparisonStatsJson);
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        } catch (IOException e) {
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        } catch (IOException e) {
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            e.printStackTrace();
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            System.out.println("Unable to write at output stream");
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        }
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        }
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    }
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    }
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    public void doGet(HttpServletRequest req, HttpServletResponse resp) {
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    public void doGet(HttpServletRequest req, HttpServletResponse resp) {
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        doPost(req, resp);
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        doPost(req, resp);