| /* |
| * 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.data.input.impl.DimensionSchema; |
| import org.apache.druid.java.util.common.io.Closer; |
| import org.apache.druid.query.dimension.DefaultDimensionSpec; |
| import org.apache.druid.query.dimension.DimensionSpec; |
| import org.apache.druid.segment.column.ColumnCapabilities; |
| import org.apache.druid.segment.nested.NestedDataComplexTypeSerde; |
| import org.apache.druid.segment.nested.StructuredData; |
| import org.apache.druid.segment.selector.settable.SettableColumnValueSelector; |
| import org.apache.druid.segment.selector.settable.SettableObjectColumnValueSelector; |
| import org.apache.druid.segment.writeout.SegmentWriteOutMedium; |
| |
| import java.util.Comparator; |
| |
| public class NestedDataDimensionHandler implements DimensionHandler<StructuredData, StructuredData, StructuredData> |
| { |
| private static Comparator<ColumnValueSelector> COMPARATOR = (s1, s2) -> |
| StructuredData.COMPARATOR.compare( |
| StructuredData.possiblyWrap(s1.getObject()), |
| StructuredData.possiblyWrap(s2.getObject()) |
| ); |
| |
| private final String name; |
| |
| public NestedDataDimensionHandler(String name) |
| { |
| this.name = name; |
| } |
| |
| @Override |
| public String getDimensionName() |
| { |
| return name; |
| } |
| |
| @Override |
| public DimensionSpec getDimensionSpec() |
| { |
| return new DefaultDimensionSpec(name, name, NestedDataComplexTypeSerde.TYPE); |
| } |
| |
| @Override |
| public DimensionSchema getDimensionSchema(ColumnCapabilities capabilities) |
| { |
| return new NestedDataDimensionSchema(name); |
| } |
| |
| @Override |
| public DimensionIndexer<StructuredData, StructuredData, StructuredData> makeIndexer(boolean useMaxMemoryEstimates) |
| { |
| return new NestedDataColumnIndexer(); |
| } |
| |
| @Override |
| public DimensionMergerV9 makeMerger( |
| IndexSpec indexSpec, |
| SegmentWriteOutMedium segmentWriteOutMedium, |
| ColumnCapabilities capabilities, |
| ProgressIndicator progress, |
| Closer closer |
| ) |
| { |
| return new NestedDataColumnMerger(name, indexSpec, segmentWriteOutMedium, progress, closer); |
| } |
| |
| @Override |
| public int getLengthOfEncodedKeyComponent(StructuredData dimVals) |
| { |
| // this is called in one place, OnheapIncrementalIndex, where returning 0 here means the value is null |
| // so the actual value we return here doesn't matter. we should consider refactoring this to a boolean |
| return 1; |
| } |
| |
| @Override |
| public Comparator<ColumnValueSelector> getEncodedValueSelectorComparator() |
| { |
| return COMPARATOR; |
| } |
| |
| @Override |
| public SettableColumnValueSelector makeNewSettableEncodedValueSelector() |
| { |
| return new SettableObjectColumnValueSelector(); |
| } |
| } |