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package in.shop2020.web;
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package in.shop2020.web;
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import java.io.IOException;
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import java.io.IOException;
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import java.util.Date;
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import java.util.HashMap;
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import java.util.HashMap;
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import java.util.List;
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import java.util.List;
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import java.util.Map;
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import java.util.Map;
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import javax.servlet.http.HttpServlet;
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import javax.servlet.http.HttpServlet;
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        resp.setContentType("application/json");
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        resp.setContentType("application/json");
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        DatastoreService datastore = DatastoreServiceFactory
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        DatastoreService datastore = DatastoreServiceFactory
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                .getDatastoreService();
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                .getDatastoreService();
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        String fromDateString = req.getParameter("fromdate");
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        String toDateString = req.getParameter("todate");
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        Date fromDate = new Date(0);
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        Date toDate =  new Date();
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        try{
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	        if(fromDateString!=null){
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	        	fromDate = new Date(Long.parseLong(fromDateString));
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	        }
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	        if(toDateString!=null){
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	        	toDate = new Date(Long.parseLong(toDateString));
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	        }
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        }catch (Exception e) {
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    		System.out.println("Parse exception, using default date from 1970 to Today");
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		}
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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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        q.addFilter("date", Query.FilterOperator.GREATER_THAN_OR_EQUAL, fromDate);
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        q.addFilter("date", Query.FilterOperator.LESS_THAN_OR_EQUAL, toDate);
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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()) {