kramerul commented on pull request #2441:
URL: https://github.com/apache/calcite/pull/2441#issuecomment-864835346
I tried to change it to the `Supplier` Pattern, but now I get
```
[methodref.receiver.bound.invalid] Incompatible receiver type
this.protoRowTypeSupplier = Suppliers.memoize(this::supplyProto);
^
found :
@UnderInitialization(org.apache.calcite.adapter.java.AbstractQueryableTable.class)
@NonNull JdbcTable
required: @Initialized @NonNull JdbcTable
Consequence: method
@UnderInitialization(org.apache.calcite.adapter.java.AbstractQueryableTable.class)
@NonNull JdbcTable
is not a valid method reference for
@Initialized @NonNull RelProtoDataType supplyProto(@Initialized @NonNull
JdbcTable this) in org.apache.calcite.adapter.jdbc.JdbcTable
```
I don't know how to fix this.
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