feat: implemented getColumnClassName

livk-cloud · web-flow · commit 4f318bf5c4e6 · 2025-01-25T11:45:10.000+08:00
diff --git a/jdbc-v2/src/main/java/com/clickhouse/jdbc/metadata/ResultSetMetaData.java b/jdbc-v2/src/main/java/com/clickhouse/jdbc/metadata/ResultSetMetaData.java
@@ -4,6 +4,7 @@
 
 import com.clickhouse.client.api.metadata.TableSchema;
 import com.clickhouse.data.ClickHouseColumn;
+import com.clickhouse.jdbc.JdbcTypeMapping;
 import com.clickhouse.jdbc.JdbcV2Wrapper;
 import com.clickhouse.jdbc.ResultSetImpl;
 import com.clickhouse.jdbc.internal.JdbcUtils;
@@ -165,6 +166,7 @@ public boolean isDefinitelyWritable(int column) throws SQLException {
 
     @Override
     public String getColumnClassName(int column) throws SQLException {
-        throw new SQLException("Not implemented", ExceptionUtils.SQL_STATE_FEATURE_NOT_SUPPORTED);
+        JdbcTypeMapping mapping = JdbcTypeMapping.getDefaultMapping();
+		return mapping.toJavaClass(getColumn(column), Map.of()).getCanonicalName();
     }
 }

Original file line number	Diff line number	Diff line change
`@@ -4,6 +4,7 @@`
`4`	`4`
`5`	`5`	`import com.clickhouse.client.api.metadata.TableSchema;`
`6`	`6`	`import com.clickhouse.data.ClickHouseColumn;`
	`7`	`+import com.clickhouse.jdbc.JdbcTypeMapping;`
`7`	`8`	`import com.clickhouse.jdbc.JdbcV2Wrapper;`
`8`	`9`	`import com.clickhouse.jdbc.ResultSetImpl;`
`9`	`10`	`import com.clickhouse.jdbc.internal.JdbcUtils;`
`@@ -165,6 +166,7 @@ public boolean isDefinitelyWritable(int column) throws SQLException {`
`165`	`166`
`166`	`167`	`@Override`
`167`	`168`	`public String getColumnClassName(int column) throws SQLException {`
`168`		`- throw new SQLException("Not implemented", ExceptionUtils.SQL_STATE_FEATURE_NOT_SUPPORTED);`
	`169`	`+ JdbcTypeMapping mapping = JdbcTypeMapping.getDefaultMapping();`
	`170`	`+ return mapping.toJavaClass(getColumn(column), Map.of()).getCanonicalName();`
`169`	`171`	`}`
`170`	`172`	`}`