libenchao commented on a change in pull request #10745:
[FLINK-15445][connectors/jdbc] JDBC Table Source didn't work for Type…
URL: https://github.com/apache/flink/pull/10745#discussion_r376680607
##########
File path:
flink-connectors/flink-jdbc/src/main/java/org/apache/flink/api/java/io/jdbc/dialect/JDBCDialect.java
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@@ -35,6 +37,15 @@
*/
boolean canHandle(String url);
+ /**
+ * Check if this dialect instance support a specific data type in table
schema.
+ *
+ * @param schema the table schema
+ */
+ default void validate(TableSchema schema) {
Review comment:
`ValidationException` is a `RuntimeException`, adding it to method signature
won' t force caller the check it. Maybe we just need to add it in java doc like
`LogicalTypeParser.parse` and `FieldInfoUtils.validateInputTypeInfo` ?
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