| /* |
| * 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.column; |
| |
| import org.apache.druid.query.extraction.ExtractionFn; |
| import org.apache.druid.segment.ColumnValueSelector; |
| import org.apache.druid.segment.DimensionSelector; |
| import org.apache.druid.segment.data.IndexedInts; |
| import org.apache.druid.segment.data.ReadableOffset; |
| import org.apache.druid.segment.vector.MultiValueDimensionVectorSelector; |
| import org.apache.druid.segment.vector.ReadableVectorOffset; |
| import org.apache.druid.segment.vector.SingleValueDimensionVectorSelector; |
| |
| import javax.annotation.Nullable; |
| |
| /** |
| * |
| */ |
| public interface DictionaryEncodedColumn<ActualType extends Comparable<? super ActualType>> extends BaseColumn |
| { |
| int length(); |
| |
| boolean hasMultipleValues(); |
| |
| int getSingleValueRow(int rowNum); |
| |
| IndexedInts getMultiValueRow(int rowNum); |
| |
| @Nullable |
| ActualType lookupName(int id); |
| |
| int lookupId(ActualType name); |
| |
| int getCardinality(); |
| |
| DimensionSelector makeDimensionSelector(ReadableOffset offset, @Nullable ExtractionFn extractionFn); |
| |
| @Override |
| default ColumnValueSelector<?> makeColumnValueSelector(ReadableOffset offset) |
| { |
| return makeDimensionSelector(offset, null); |
| } |
| |
| SingleValueDimensionVectorSelector makeSingleValueDimensionVectorSelector(ReadableVectorOffset vectorOffset); |
| |
| MultiValueDimensionVectorSelector makeMultiValueDimensionVectorSelector(ReadableVectorOffset vectorOffset); |
| } |