Github user cloud-fan commented on a diff in the pull request: https://github.com/apache/spark/pull/13909#discussion_r93812230 --- Diff: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/complexTypeCreator.scala --- @@ -56,33 +58,81 @@ case class CreateArray(children: Seq[Expression]) extends Expression { } override def doGenCode(ctx: CodegenContext, ev: ExprCode): ExprCode = { - val arrayClass = classOf[GenericArrayData].getName - val values = ctx.freshName("values") - ctx.addMutableState("Object[]", values, s"this.$values = null;") - - ev.copy(code = s""" - this.$values = new Object[${children.size}];""" + - ctx.splitExpressions( - ctx.INPUT_ROW, - children.zipWithIndex.map { case (e, i) => - val eval = e.genCode(ctx) - eval.code + s""" - if (${eval.isNull}) { - $values[$i] = null; - } else { - $values[$i] = ${eval.value}; - } - """ - }) + - s""" - final ArrayData ${ev.value} = new $arrayClass($values); - this.$values = null; - """, isNull = "false") + val array = ctx.freshName("array") + + val et = dataType.elementType + val evals = children.map(e => e.genCode(ctx)) + val isPrimitiveArray = ctx.isPrimitiveType(et) + val (preprocess, arrayData) = + GenArrayData.getCodeArrayData(ctx, et, children.size, isPrimitiveArray, array) + + val assigns = if (isPrimitiveArray) { + val primitiveTypeName = ctx.primitiveTypeName(et) + evals.zipWithIndex.map { case (eval, i) => + eval.code + s""" + if (${eval.isNull}) { + $arrayData.setNullAt($i); + } else { + $arrayData.set$primitiveTypeName($i, ${eval.value}); + } + """ + } + } else { + evals.zipWithIndex.map { case (eval, i) => + eval.code + s""" + if (${eval.isNull}) { + $array[$i] = null; + } else { + $array[$i] = ${eval.value}; + } + """ + } + } + ev.copy(code = + preprocess + + ctx.splitExpressions(ctx.INPUT_ROW, assigns) + + s"\nfinal ArrayData ${ev.value} = $arrayData;\n", + isNull = "false") } override def prettyName: String = "array" } +private [sql] object GenArrayData { + // This function returns Java code pieces based on DataType and isPrimitive + // for allocation of ArrayData class + def getCodeArrayData( + ctx: CodegenContext, + dt: DataType, + size: Int, + isPrimitive : Boolean, + array: String): (String, String) = { --- End diff -- nit: `arrayName`
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