NobiGo commented on code in PR #4214:
URL: https://github.com/apache/calcite/pull/4214#discussion_r2029553524
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core/src/main/java/org/apache/calcite/rel/rel2sql/SqlImplementor.java:
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@@ -166,8 +166,12 @@ public abstract class SqlImplementor {
protected final Map<CorrelationId, Context> correlTableMap = new HashMap<>();
- /** Private RexBuilder for short-lived expressions. It has its own
- * dedicated type factory, so don't trust the types to be canonized. */
+ /**
+ * Private RexBuilder for short-lived expressions. It has its own
+ * dedicated type factory, so don't trust the types to be canonized.
+ *
+ * @deprecated Replaced by {@link RexBuilder#DEFAULT}. */
+ @Deprecated // to be removed before 2.0
Review Comment:
This change is necessary. I tried to obtain `RexBuilder` through
`implementer().RexBuilder`, but SimpleContext may throw
UnsupportedOperaException in some cases.
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