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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.facebook.presto.spi.type.VarcharType.VARCHAR;
import static io.airlift.slice.SizeOf.SIZE_OF_DOUBLE;
    @Override
    public Type getSerializedType()
    {
        return ;
    }
    @Override
    public void serialize(DigestAndPercentileState stateBlockBuilder out)
    {
        if (state.getDigest() == null) {
            out.appendNull();
        }
        else {
            DynamicSliceOutput sliceOutput = new DynamicSliceOutput(state.getDigest().estimatedSerializedSizeInBytes() + );
            // write digest
            state.getDigest().serialize(sliceOutput);
            // write percentile
            sliceOutput.appendDouble(state.getPercentile());
            Slice slice = sliceOutput.slice();
            .writeSlice(outslice);
        }
    }
    @Override
    public void deserialize(Block blockint indexDigestAndPercentileState state)
    {
        if (!block.isNull(index)) {
            SliceInput input = .getSlice(blockindex).getInput();
            // read digest
            state.setDigest(QuantileDigest.deserialize(input));
            state.addMemoryUsage(state.getDigest().estimatedInMemorySizeInBytes());
            // read percentile
            state.setPercentile(input.readDouble());
        }
    }
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