| /* |
| * 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.guice; |
| |
| import com.fasterxml.jackson.databind.Module; |
| import com.fasterxml.jackson.databind.jsontype.NamedType; |
| import com.fasterxml.jackson.databind.module.SimpleModule; |
| import com.google.common.annotations.VisibleForTesting; |
| import com.google.inject.Binder; |
| import org.apache.druid.initialization.DruidModule; |
| import org.apache.druid.segment.DimensionHandlerUtils; |
| import org.apache.druid.segment.NestedDataDimensionHandler; |
| import org.apache.druid.segment.NestedDataDimensionSchema; |
| import org.apache.druid.segment.nested.NestedDataComplexTypeSerde; |
| import org.apache.druid.segment.nested.StructuredData; |
| import org.apache.druid.segment.nested.StructuredDataJsonSerializer; |
| import org.apache.druid.segment.serde.ComplexMetrics; |
| import org.apache.druid.segment.virtual.NestedFieldVirtualColumn; |
| |
| import java.util.Collections; |
| import java.util.List; |
| |
| public class NestedDataModule implements DruidModule |
| { |
| @Override |
| public List<? extends Module> getJacksonModules() |
| { |
| return getJacksonModulesList(); |
| } |
| |
| @Override |
| public void configure(Binder binder) |
| { |
| registerHandlersAndSerde(); |
| } |
| |
| |
| @VisibleForTesting |
| public static void registerHandlersAndSerde() |
| { |
| if (ComplexMetrics.getSerdeForType(NestedDataComplexTypeSerde.TYPE_NAME) == null) { |
| ComplexMetrics.registerSerde(NestedDataComplexTypeSerde.TYPE_NAME, NestedDataComplexTypeSerde.INSTANCE); |
| |
| } |
| DimensionHandlerUtils.registerDimensionHandlerProvider( |
| NestedDataComplexTypeSerde.TYPE_NAME, |
| NestedDataDimensionHandler::new |
| ); |
| } |
| |
| public static List<SimpleModule> getJacksonModulesList() |
| { |
| return Collections.singletonList( |
| new SimpleModule("NestedDataModule") |
| .registerSubtypes( |
| new NamedType(NestedDataDimensionSchema.class, NestedDataComplexTypeSerde.TYPE_NAME), |
| new NamedType(NestedFieldVirtualColumn.class, "nested-field") |
| ) |
| .addSerializer(StructuredData.class, new StructuredDataJsonSerializer()) |
| ); |
| } |
| } |