cboumalh commented on code in PR #52883: URL: https://github.com/apache/spark/pull/52883#discussion_r2684214630
########## sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/tuplesketchesExpressions.scala: ########## @@ -0,0 +1,1070 @@ +/* + * 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.spark.sql.catalyst.expressions + +import org.apache.datasketches.tuple.{AnotB, Intersection, Summary, SummarySetOperations, TupleSketchIterator, Union} +import org.apache.datasketches.tuple.adouble.{DoubleSummary, DoubleSummaryFactory, DoubleSummarySetOperations} +import org.apache.datasketches.tuple.aninteger.{IntegerSummary, IntegerSummaryFactory, IntegerSummarySetOperations} + +import org.apache.spark.sql.catalyst.analysis.ExpressionBuilder +import org.apache.spark.sql.catalyst.expressions.codegen.CodegenFallback +import org.apache.spark.sql.catalyst.plans.logical.{FunctionSignature, InputParameter} +import org.apache.spark.sql.catalyst.util.{ThetaSketchUtils, TupleSummaryMode} +import org.apache.spark.sql.internal.types.StringTypeWithCollation +import org.apache.spark.sql.types.{AbstractDataType, BinaryType, DataType, DoubleType, IntegerType, LongType} +import org.apache.spark.unsafe.types.UTF8String + +// scalastyle:off line.size.limit +@ExpressionDescription( + usage = """ + _FUNC_(child) - Returns the estimated number of unique values + given the binary representation of a Datasketches TupleSketch. The sketch's + summary type must be a double. """, + examples = """ + Examples: + > SELECT _FUNC_(tuple_sketch_agg_double(key, summary)) FROM VALUES (1, 1.0D), (1, 2.0D), (2, 3.0D) tab(key, summary); + 2.0 + """, + group = "misc_funcs", + since = "4.2.0") +// scalastyle:on line.size.limit +case class TupleSketchEstimateDouble(child: Expression) + extends UnaryExpression + with CodegenFallback + with ExpectsInputTypes { + + override def nullIntolerant: Boolean = true + + override def inputTypes: Seq[AbstractDataType] = Seq(BinaryType) + + override def dataType: DataType = DoubleType + + override def prettyName: String = "tuple_sketch_estimate_double" + + override protected def withNewChildInternal(newChild: Expression): TupleSketchEstimateDouble = + copy(child = newChild) + + override def nullSafeEval(input: Any): Any = { + val buffer = input.asInstanceOf[Array[Byte]] + val sketch = ThetaSketchUtils.heapifyDoubleTupleSketch(buffer, prettyName) + sketch.getEstimate() + } +} + +// scalastyle:off line.size.limit +@ExpressionDescription( + usage = """ + _FUNC_(child) - Returns the estimated number of unique values + given the binary representation of a Datasketches TupleSketch. The sketch's + summary type must be an integer. """, + examples = """ + Examples: + > SELECT _FUNC_(tuple_sketch_agg_integer(key, summary)) FROM VALUES (1, 1), (1, 2), (2, 3) tab(key, summary); + 2.0 + """, + group = "misc_funcs", + since = "4.2.0") +// scalastyle:on line.size.limit +case class TupleSketchEstimateInteger(child: Expression) + extends UnaryExpression + with CodegenFallback + with ExpectsInputTypes { + + override def nullIntolerant: Boolean = true + + override def inputTypes: Seq[AbstractDataType] = Seq(BinaryType) + + override def dataType: DataType = DoubleType + + override def prettyName: String = "tuple_sketch_estimate_integer" + + override protected def withNewChildInternal(newChild: Expression): TupleSketchEstimateInteger = + copy(child = newChild) + + override def nullSafeEval(input: Any): Any = { + val buffer = input.asInstanceOf[Array[Byte]] + val sketch = ThetaSketchUtils.heapifyIntegerTupleSketch(buffer, prettyName) + sketch.getEstimate() + } +} + +// scalastyle:off line.size.limit +@ExpressionDescription( + usage = """ + _FUNC_(child, mode) - Aggregates the summary values from a double summary type + Datasketches TupleSketch. The mode can be 'sum', 'min', 'max', or 'alwaysone' + (defaults to 'sum'). """, + examples = """ + Examples: + > SELECT _FUNC_(tuple_sketch_agg_double(key, summary)) FROM VALUES (1, 1.0D), (1, 2.0D), (2, 3.0D) tab(key, summary); + 6.0 + """, + group = "misc_funcs", + since = "4.2.0") +// scalastyle:on line.size.limit +case class TupleSketchSummaryDouble(left: Expression, right: Expression) + extends BinaryExpression + with CodegenFallback + with ExpectsInputTypes { + + def this(child: Expression) = { + this(child, Literal(TupleSummaryMode.Sum.toString)) + } + + override def nullIntolerant: Boolean = true + + override def inputTypes: Seq[AbstractDataType] = + Seq(BinaryType, StringTypeWithCollation(supportsTrimCollation = true)) + + override def dataType: DataType = DoubleType + + override def prettyName: String = "tuple_sketch_summary_double" + + override protected def withNewChildrenInternal( + newFirst: Expression, + newSecond: Expression): TupleSketchSummaryDouble = + copy(left = newFirst, right = newSecond) + + override def nullSafeEval(input: Any, modeInput: Any): Any = { + val buffer = input.asInstanceOf[Array[Byte]] + val modeStr = modeInput.asInstanceOf[UTF8String].toString + + // Parse and validate mode in one step + val mode = TupleSummaryMode.fromString(modeStr, prettyName) + + val sketch = ThetaSketchUtils.heapifyDoubleTupleSketch(buffer, prettyName) + + ThetaSketchUtils.aggregateNumericSummaries[DoubleSummary, Double]( + sketch.iterator(), + mode, + (it: TupleSketchIterator[DoubleSummary]) => it.getSummary.getValue) + } +} + +// scalastyle:off line.size.limit +@ExpressionDescription( + usage = """ + _FUNC_(child, mode) - Aggregates the summary values from a integer summary type + Datasketches TupleSketch. The mode can be 'sum', 'min', 'max', or 'alwaysone' + (defaults to 'sum'). """, + examples = """ + Examples: + > SELECT _FUNC_(tuple_sketch_agg_integer(key, summary)) FROM VALUES (1, 1), (1, 2), (2, 3) tab(key, summary); + 6 + """, + group = "misc_funcs", + since = "4.2.0") +// scalastyle:on line.size.limit +case class TupleSketchSummaryInteger(left: Expression, right: Expression) + extends BinaryExpression + with CodegenFallback + with ExpectsInputTypes { + + def this(child: Expression) = { + this(child, Literal(TupleSummaryMode.Sum.toString)) + } + + override def nullIntolerant: Boolean = true + + override def inputTypes: Seq[AbstractDataType] = + Seq(BinaryType, StringTypeWithCollation(supportsTrimCollation = true)) + + override def dataType: DataType = LongType + + override def prettyName: String = "tuple_sketch_summary_integer" + + override protected def withNewChildrenInternal( + newFirst: Expression, + newSecond: Expression): TupleSketchSummaryInteger = + copy(left = newFirst, right = newSecond) + + override def nullSafeEval(input: Any, modeInput: Any): Any = { + val buffer = input.asInstanceOf[Array[Byte]] + val modeStr = modeInput.asInstanceOf[UTF8String].toString + + // Parse and validate mode in one step + val mode = TupleSummaryMode.fromString(modeStr, prettyName) + + val sketch = ThetaSketchUtils.heapifyIntegerTupleSketch(buffer, prettyName) + + ThetaSketchUtils.aggregateNumericSummaries[IntegerSummary, Long]( + sketch.iterator(), + mode, + (it: TupleSketchIterator[IntegerSummary]) => it.getSummary.getValue.toLong) + } +} + +case class TupleUnionDouble( Review Comment: yes, I somehow missed this, will add 👍 -- This is an automated message from the Apache Git Service. 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