性能优化

@@ -63,7 +63,8 @@ public class BrandAggregation extends AbstractAggregation {
 		Iterator<? extends Bucket> itSizeAgg = aggregation.getBuckets().iterator();
 		while (itSizeAgg.hasNext()) {
 			Bucket ltSize = itSizeAgg.next();
-			for (String brandId : ltSize.getKeyAsString().split(",")) {
+			String[] brandIdArray=ltSize.getKeyAsString().split(",");
+			for (String brandId : brandIdArray) {
 				brandIds.add(brandId);
 			}
 		}