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  /*
   * 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.facebook.presto.operator.aggregation.state;
 
 
 import static com.google.common.base.Preconditions.checkNotNull;
 
         implements AccumulatorStateFactory<ArrayAggregationState>
 {
     @Override
     {
         return new SingleArrayAggregationState();
     }
 
     @Override
     public Class<? extends ArrayAggregationStategetSingleStateClass()
     {
         return SingleArrayAggregationState.class;
     }
 
     @Override
     {
         return new GroupedArrayAggregationState();
     }
 
     @Override
     public Class<? extends ArrayAggregationStategetGroupedStateClass()
     {
         return GroupedArrayAggregationState.class;
     }
 
     public static class GroupedArrayAggregationState
             extends AbstractGroupedAccumulatorState
             implements ArrayAggregationState
     {
         private final ObjectBigArray<BlockBuilderblockBuilders = new ObjectBigArray<BlockBuilder>();
         private long size;
 
         @Override
         public void ensureCapacity(long size)
         {
             .ensureCapacity(size);
         }
 
         @Override
         public long getEstimatedSize()
         {
             return  + .sizeOf();
         }
 
         @Override
         public void addMemoryUsage(long memory)
         {
              += memory;
         }
 
         @Override
         public BlockBuilder getBlockBuilder()
         {
             return .get(getGroupId());
         }
 
         @Override
         public void setBlockBuilder(BlockBuilder value)
         {
             checkNotNull(value"value is null");
 
             BlockBuilder previous = getBlockBuilder();
             if (previous != null) {
                  -= previous.getSizeInBytes();
             }
             .set(getGroupId(), value);
              += value.getSizeInBytes();
         }
     }
 
     public static class SingleArrayAggregationState
             implements ArrayAggregationState
     {
         private BlockBuilder blockBuilder;
 
         @Override
         public long getEstimatedSize()
        {
            if ( == null) {
                return 0L;
            }
            else {
                return .getSizeInBytes();
            }
        }
        @Override
        public BlockBuilder getBlockBuilder()
        {
            return ;
        }
        @Override
        public void setBlockBuilder(BlockBuilder value)
        {
            checkNotNull(value"value is null");
             = value;
        }
        @Override
        public void addMemoryUsage(long memory)
        {
            // no op
        }
    }
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