dawidwys commented on a change in pull request #11153:
[FLINK-15958][table-common] Introduce unresolved data types in API
URL: https://github.com/apache/flink/pull/11153#discussion_r382176982
##########
File path:
flink-table/flink-table-common/src/main/java/org/apache/flink/table/catalog/DataTypeFactory.java
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@@ -38,21 +38,29 @@
@PublicEvolving
public interface DataTypeFactory {
+ /**
+ * Creates a type out of an {@link AbstractDataType}.
+ *
+ * <p>If the given type is already a {@link DataType}, the factory will
return it unmodified. In
+ * case of {@link UnresolvedDataType}, the factory will resolve it to a
{@link DataType}.
+ */
+ <T extends AbstractDataType<T>> DataType
createDataType(AbstractDataType<T> abstractDataType);
Review comment:
ditto: `<?>`
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