amaliujia commented on a change in pull request #12461:
URL: https://github.com/apache/beam/pull/12461#discussion_r465341297
##########
File path:
sdks/java/extensions/sql/src/main/java/org/apache/beam/sdk/extensions/sql/impl/utils/CalciteUtils.java
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@@ -285,16 +286,23 @@ private static RelDataType toRelDataType(
* SQL-Java type mapping, with specified Beam rules: <br>
* 1. redirect {@link AbstractInstant} to {@link Date} so Calcite can
recognize it.
*
- * @param rawType
+ * @param type
* @return
*/
- public static RelDataType sqlTypeWithAutoCast(RelDataTypeFactory
typeFactory, Type rawType) {
+ public static RelDataType sqlTypeWithAutoCast(RelDataTypeFactory
typeFactory, Type type) {
// For Joda time types, return SQL type for java.util.Date.
- if (rawType instanceof Class &&
AbstractInstant.class.isAssignableFrom((Class<?>) rawType)) {
+ if (type instanceof Class &&
AbstractInstant.class.isAssignableFrom((Class<?>) type)) {
return typeFactory.createJavaType(Date.class);
- } else if (rawType instanceof Class &&
ByteString.class.isAssignableFrom((Class<?>) rawType)) {
+ } else if (type instanceof Class &&
ByteString.class.isAssignableFrom((Class<?>) type)) {
return typeFactory.createJavaType(byte[].class);
+ } else if (type instanceof ParameterizedType
+ && java.util.List.class.isAssignableFrom(
+ (Class<?>) ((ParameterizedType) type).getRawType())) {
+ ParameterizedType parameterizedType = (ParameterizedType) type;
+ Class<?> genericType = (Class<?>)
parameterizedType.getActualTypeArguments()[0];
+ RelDataType collectionElementType =
typeFactory.createJavaType(genericType);
+ return typeFactory.createArrayType(collectionElementType, -1L);
Review comment:
Nice catch! Made the suggested change.
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