zabetak commented on a change in pull request #1083: [CALCITE-2889]
IndexOutOfBoundsException thrown if targetTypes[] contains varargs
URL: https://github.com/apache/calcite/pull/1083#discussion_r262828512
##########
File path:
core/src/main/java/org/apache/calcite/adapter/enumerable/EnumUtils.java
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@@ -211,7 +211,23 @@ static Expression fromInternal(Expression e, Class<?>
targetType) {
List<Expression> expressions) {
final List<Expression> list = new ArrayList<>();
for (int i = 0; i < expressions.size(); i++) {
- list.add(fromInternal(expressions.get(i), targetTypes[i]));
+ if (targetTypes[i].isArray()) {
+ // only the last type could be variable length argument. All left
expressions
+ // are supposed to be the same type as
targetTypes[i].getComponentType().
+ List<Expression> subList = expressions.subList(i, expressions.size());
+ list.addAll(fromInternal(targetTypes[i].getComponentType(), subList));
+ break;
+ } else {
+ list.add(fromInternal(expressions.get(i), targetTypes[i]));
+ }
+ }
+ return list;
+ }
+
+ static List<Expression> fromInternal(Class<?> targetType, List<Expression>
expressions) {
Review comment:
Does it need to be package private? Can't we make it just private?
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