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https://issues.apache.org/jira/browse/FLINK-3702?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15434748#comment-15434748
]
ASF GitHub Bot commented on FLINK-3702:
---------------------------------------
Github user ggevay commented on a diff in the pull request:
https://github.com/apache/flink/pull/2094#discussion_r76040498
--- Diff:
flink-core/src/main/java/org/apache/flink/api/common/typeinfo/BasicTypeInfo.java
---
@@ -171,6 +172,23 @@ public boolean isKeyType() {
}
}
+ @Override
+ @PublicEvolving
+ @SuppressWarnings("unchecked")
+ public <F> FieldAccessor<T, F> getFieldAccessor(int pos,
ExecutionConfig config) {
+ if(pos != 0) {
+ throw new InvalidFieldReferenceException("Not the 0th
field selected for a basic type.");
+ }
+ return (FieldAccessor<T, F>) new
FieldAccessor.SimpleFieldAccessor<T>(this);
+ }
+
+ @Override
+ @PublicEvolving
+ public <F> FieldAccessor<T, F> getFieldAccessor(String field,
ExecutionConfig config) {
+ throw new InvalidFieldReferenceException("Field expressions are
not supported on basic types."
--- End diff --
155afcb56d0f87c888e49ecd9f8920d28a4514ca
> DataStream API PojoFieldAccessor doesn't support nested POJOs
> -------------------------------------------------------------
>
> Key: FLINK-3702
> URL: https://issues.apache.org/jira/browse/FLINK-3702
> Project: Flink
> Issue Type: Improvement
> Components: DataStream API
> Affects Versions: 1.0.0
> Reporter: Robert Metzger
> Assignee: Gabor Gevay
>
> The {{PojoFieldAccessor}} (which is used by {{.sum(String)}} and similar
> methods) doesn't support nested POJOs right now.
> As part of FLINK-3697 I'll add a check for a nested POJO and fail with an
> exception.
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