github-code-scanning[bot] commented on code in PR #14900: URL: https://github.com/apache/druid/pull/14900#discussion_r1303445579
########## processing/src/main/java/org/apache/druid/frame/field/NumericArrayFieldReader.java: ########## @@ -0,0 +1,182 @@ +/* + * 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.frame.field; + +import org.apache.datasketches.memory.Memory; +import org.apache.druid.error.DruidException; +import org.apache.druid.query.extraction.ExtractionFn; +import org.apache.druid.query.monomorphicprocessing.RuntimeShapeInspector; +import org.apache.druid.segment.ColumnValueSelector; +import org.apache.druid.segment.DimensionSelector; + +import javax.annotation.Nullable; +import java.util.ArrayList; +import java.util.List; + +public abstract class NumericArrayFieldReader implements FieldReader +{ + @Override + public DimensionSelector makeDimensionSelector( + Memory memory, + ReadableFieldPointer fieldPointer, + @Nullable ExtractionFn extractionFn + ) + { + // TODO: Should I throw an exception here + return DimensionSelector.nilSelector(); + } + + @Override + public boolean isNull(Memory memory, long position) + { + final byte firstByte = memory.getByte(position); + return firstByte == NumericArrayFieldWriter.NULL_ROW; + } + + @Override + public boolean isComparable() + { + return true; + } + + public abstract static class Selector<T extends Number> implements ColumnValueSelector + { + private final Memory memory; + private final ReadableFieldPointer fieldPointer; + + private long currentFieldPosition = -1; + + private final List<T> currentRow = new ArrayList<>(); + private boolean currentRowIsNull; + + public Selector(final Memory memory, final ReadableFieldPointer fieldPointer) + { + this.memory = memory; + this.fieldPointer = fieldPointer; + } + + @Override + public void inspectRuntimeShape(RuntimeShapeInspector inspector) + { + + } + + @Nullable + @Override + public Object getObject() + { + final List<T> currentArray = computeCurrentArray(); + + if (currentArray == null) { + return null; + } + + return currentArray.toArray(); + } + + @Override + public Class classOfObject() + { + return Object.class; + } + + @Override + public double getDouble() + { + return 0; + } + + @Override + public float getFloat() + { + return 0; + } + + @Override + public long getLong() + { + return 0; + } + + @Override + public boolean isNull() + { + long position = fieldPointer.position(); + final byte firstByte = memory.getByte(position); + return firstByte == NumericArrayFieldWriter.NULL_ROW; + } + + public abstract T getIndividualValueAtMemory(Memory memory, long position); + + public abstract int getIndividualFieldSize(); + + @Nullable + private List<T> computeCurrentArray() + { + final long fieldPosition = fieldPointer.position(); + + if (fieldPosition != currentFieldPosition) { + updateCurrentArray(fieldPosition); + } + + this.currentFieldPosition = fieldPosition; + + if (currentRowIsNull) { + return null; + } + return currentRow; + + } + + private void updateCurrentArray(final long fieldPosition) + { + currentRow.clear(); + currentRowIsNull = false; + + long position = fieldPosition; + long limit = memory.getCapacity(); + + if (isNull()) { + currentRowIsNull = true; + return; + } + + position++; Review Comment: ## User-controlled data in arithmetic expression This arithmetic expression depends on a [user-provided value](1), potentially causing an overflow. This arithmetic expression depends on a [user-provided value](2), potentially causing an overflow. This arithmetic expression depends on a [user-provided value](3), potentially causing an overflow. This arithmetic expression depends on a [user-provided value](4), potentially causing an overflow. This arithmetic expression depends on a [user-provided value](5), potentially causing an overflow. [Show more details](https://github.com/apache/druid/security/code-scanning/5729) -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
