| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 org.apache.druid.segment; |
| |
| import org.apache.druid.guice.annotations.ExtensionPoint; |
| import org.apache.druid.segment.serde.Serializer; |
| |
| import java.io.IOException; |
| |
| /** |
| * GenericColumnSerializer can be implemented in custom aggregator extensions that would like to take full control of column |
| * serialization. That implementation would be returned by overriding {@link |
| * org.apache.druid.segment.serde.ComplexMetricSerde#getSerializer} |
| * |
| * TODO rename to "ColumnSerializer" prior to Druid 1.0 |
| */ |
| @ExtensionPoint |
| public interface GenericColumnSerializer<T> extends Serializer |
| { |
| void open() throws IOException; |
| |
| void serialize(ColumnValueSelector<? extends T> selector) throws IOException; |
| } |