wuchong 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_r376195245
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File path:
flink-connectors/flink-jdbc/src/main/java/org/apache/flink/api/java/io/jdbc/JDBCTableSource.java
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@@ -73,17 +75,23 @@ private JDBCTableSource(
this.selectFields = selectFields;
final TypeInformation<?>[] schemaTypeInfos =
schema.getFieldTypes();
+ final DataType[] schemaDataTypes = schema.getFieldDataTypes();
final String[] schemaFieldNames = schema.getFieldNames();
if (selectFields != null) {
TypeInformation<?>[] typeInfos = new
TypeInformation[selectFields.length];
- String[] typeNames = new String[selectFields.length];
+ DataType[] dataTypes = new
DataType[selectFields.length];
+ String[] fieldNames = new String[selectFields.length];
for (int i = 0; i < selectFields.length; i++) {
typeInfos[i] = schemaTypeInfos[selectFields[i]];
- typeNames[i] =
schemaFieldNames[selectFields[i]];
+ dataTypes[i] = schemaDataTypes[selectFields[i]];
+ fieldNames[i] =
schemaFieldNames[selectFields[i]];
}
- this.returnType = new RowTypeInfo(typeInfos, typeNames);
+ this.returnType = new RowTypeInfo(typeInfos,
fieldNames);
Review comment:
Can we remove the `returnType` member field?
It's error-prone to maintain two objects. The returnType is only used in
`getDataStream` and can be derived via
`TypeConversions.fromDataTypeToLegacyInfo(producedDataType)`.
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