Github user viirya commented on a diff in the pull request:
https://github.com/apache/spark/pull/13909#discussion_r93814750
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/complexTypeCreator.scala
---
@@ -58,77 +58,126 @@ case class CreateArray(children: Seq[Expression])
extends Expression {
}
override def doGenCode(ctx: CodegenContext, ev: ExprCode): ExprCode = {
- 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",
+ val (preprocess, postprocess, arrayData, array) =
+ GenArrayData.genCodeToCreateArrayData(ctx, et, children.size,
isPrimitiveArray)
+ val assigns = GenArrayData.genCodeToAssignArrayElements(
+ ctx, evals, et, isPrimitiveArray, arrayData, array, true)
+ /*
+ TODO: When we generate simpler code, we have to solve the following
exception
+ https://github.com/apache/spark/pull/13909/files#r93813725
+ ev.copy(
+ code = preprocess + ctx.splitExpressions(ctx.INPUT_ROW, assigns) +
postprocess
+ value = arrayData,
+ isNull = "false")
+ */
+ ev.copy(
+ code = preprocess + ctx.splitExpressions(ctx.INPUT_ROW, assigns) +
postprocess +
+ 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(
+ /**
+ * Return Java code pieces based on DataType and isPrimitive to allocate
ArrayData class
+ *
+ * @param ctx a [[CodegenContext]]
+ * @param elementType data type of an underlying array
+ * @param numElements the number of array elements
+ * @param isPrimitive Are all of the elements of an underlying array
primitive type
+ * @return (code pre-assignments, code post-assignments, underlying
array name, arrayData name)
--- End diff --
You return `(..., ..., arrayDataName, arrayName)` actually.
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