| /** |
| * 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.pinot.core.operator.transform.function; |
| |
| import com.google.common.base.Preconditions; |
| import java.util.Arrays; |
| import java.util.List; |
| import java.util.Map; |
| import org.apache.pinot.common.function.TransformFunctionType; |
| import org.apache.pinot.core.operator.blocks.ProjectionBlock; |
| import org.apache.pinot.core.operator.transform.TransformResultMetadata; |
| import org.apache.pinot.segment.spi.datasource.DataSource; |
| import org.apache.pinot.segment.spi.index.reader.NullValueVectorReader; |
| import org.roaringbitmap.PeekableIntIterator; |
| |
| |
| public class IsNotNullTransformFunction extends BaseTransformFunction { |
| |
| private int[] _results; |
| private PeekableIntIterator _nullValueVectorIterator; |
| |
| @Override |
| public String getName() { |
| return TransformFunctionType.IS_NOT_NULL.getName(); |
| } |
| |
| @Override |
| public void init(List<TransformFunction> arguments, Map<String, DataSource> dataSourceMap) { |
| Preconditions.checkArgument(arguments.size() == 1, |
| "Exact 1 argument is required for IS_NOT_NULL operator function"); |
| TransformFunction transformFunction = arguments.get(0); |
| if (!(transformFunction instanceof IdentifierTransformFunction)) { |
| throw new IllegalArgumentException( |
| "Only column names are supported in IS_NOT_NULL. Support for functions is planned for future release"); |
| } |
| String columnName = ((IdentifierTransformFunction) transformFunction).getColumnName(); |
| NullValueVectorReader nullValueVectorReader = dataSourceMap.get(columnName).getNullValueVector(); |
| if (nullValueVectorReader != null) { |
| _nullValueVectorIterator = nullValueVectorReader.getNullBitmap().getIntIterator(); |
| } else { |
| _nullValueVectorIterator = null; |
| } |
| } |
| |
| @Override |
| public TransformResultMetadata getResultMetadata() { |
| return BOOLEAN_SV_NO_DICTIONARY_METADATA; |
| } |
| |
| @Override |
| public int[] transformToIntValuesSV(ProjectionBlock projectionBlock) { |
| int length = projectionBlock.getNumDocs(); |
| if (_results == null || _results.length < length) { |
| _results = new int[length]; |
| } |
| |
| int[] docIds = projectionBlock.getDocIds(); |
| |
| Arrays.fill(_results, 1); |
| if (_nullValueVectorIterator != null) { |
| int currentDocIdIndex = 0; |
| while (_nullValueVectorIterator.hasNext() & currentDocIdIndex < length) { |
| _nullValueVectorIterator.advanceIfNeeded(docIds[currentDocIdIndex]); |
| if (_nullValueVectorIterator.hasNext()) { |
| currentDocIdIndex = Arrays.binarySearch(docIds, currentDocIdIndex, length, _nullValueVectorIterator.next()); |
| if (currentDocIdIndex >= 0) { |
| _results[currentDocIdIndex] = 0; |
| currentDocIdIndex++; |
| } else { |
| currentDocIdIndex = -currentDocIdIndex - 1; |
| } |
| } |
| } |
| } |
| |
| return _results; |
| } |
| } |