FIX IsSecialofferAggregation

@@ -27,7 +27,7 @@ public class IsLimitedAggregation extends AbstractAggregation {
 	public Object getAggregationResponseMap(Map<String, Aggregation> aggMaps) {
 		MultiBucketsAggregation aggregation = this.getAggregation(aggMaps);
 		if (aggregation == null) {
-			return Boolean.FALSE;
+			return null;
 		}
 		Iterator<? extends Bucket> itAgg = aggregation.getBuckets().iterator();
 		while (itAgg.hasNext()) {

 package com.yoho.search.service.aggregations.impls;
 
 import com.yoho.search.core.es.agg.AbstractAggregation;
+
 import org.elasticsearch.search.aggregations.AbstractAggregationBuilder;
 import org.elasticsearch.search.aggregations.Aggregation;
 import org.elasticsearch.search.aggregations.AggregationBuilders;
@@ -21,7 +22,7 @@ public class IsNewAggregation extends AbstractAggregation {
 	public AbstractAggregationBuilder getBuilder() {
 		return AggregationBuilders.terms(aggName()).field("isnew").size(2);
 	}
-	
+
 	@Override
 	public Object getAggregationResponseMap(Map<String, Aggregation> aggMaps) {
 		MultiBucketsAggregation aggregation = this.getAggregation(aggMaps);
@@ -33,10 +34,10 @@ public class IsNewAggregation extends AbstractAggregation {
 			Bucket bucket = itAgg.next();
 			String bool = bucket.getKeyAsString();
 			if ("Y".equals(bool)) {
-				return true;
+				return Boolean.TRUE;
 			}
 		}
-		return false;
+		return Boolean.FALSE;
 	}
 
 }

 package com.yoho.search.service.aggregations.impls;
 
 import com.yoho.search.core.es.agg.AbstractAggregation;
+
 import org.elasticsearch.search.aggregations.AbstractAggregationBuilder;
 import org.elasticsearch.search.aggregations.Aggregation;
 import org.elasticsearch.search.aggregations.AggregationBuilders;
@@ -33,9 +34,9 @@ public class IsSecialofferAggregation extends AbstractAggregation {
 			Bucket bucket = itAgg.next();
 			String bool = bucket.getKeyAsString();
 			if ("Y".equals(bool)) {
-				return true;
+				return Boolean.TRUE;
 			}
 		}
-		return false;
+		return Boolean.FALSE;
 	}
 }