hailin0 commented on code in PR #8438:
URL: https://github.com/apache/seatunnel/pull/8438#discussion_r1903290175
##########
seatunnel-transforms-v2/src/main/java/org/apache/seatunnel/transform/common/AbstractCatalogSupportFlatMapTransform.java:
##########
@@ -16,31 +16,183 @@
*/
package org.apache.seatunnel.transform.common;
+import
org.apache.seatunnel.shade.com.google.common.annotations.VisibleForTesting;
+
+import org.apache.seatunnel.api.configuration.ReadonlyConfig;
import org.apache.seatunnel.api.table.catalog.CatalogTable;
+import org.apache.seatunnel.api.table.catalog.Column;
+import org.apache.seatunnel.api.table.catalog.TableSchema;
+import org.apache.seatunnel.api.table.schema.event.AlterTableAddColumnEvent;
+import org.apache.seatunnel.api.table.schema.event.AlterTableChangeColumnEvent;
+import org.apache.seatunnel.api.table.schema.event.AlterTableColumnEvent;
+import org.apache.seatunnel.api.table.schema.event.AlterTableColumnsEvent;
+import org.apache.seatunnel.api.table.schema.event.AlterTableDropColumnEvent;
+import org.apache.seatunnel.api.table.schema.event.AlterTableModifyColumnEvent;
+import org.apache.seatunnel.api.table.schema.event.SchemaChangeEvent;
+import
org.apache.seatunnel.api.table.schema.handler.TableSchemaChangeEventDispatcher;
+import
org.apache.seatunnel.api.table.schema.handler.TableSchemaChangeEventHandler;
import org.apache.seatunnel.api.table.type.SeaTunnelRow;
import org.apache.seatunnel.api.transform.SeaTunnelFlatMapTransform;
import lombok.NonNull;
import lombok.extern.slf4j.Slf4j;
import java.util.List;
+import java.util.stream.Collectors;
@Slf4j
public abstract class AbstractCatalogSupportFlatMapTransform
extends AbstractSeaTunnelTransform<SeaTunnelRow, List<SeaTunnelRow>>
implements SeaTunnelFlatMapTransform<SeaTunnelRow> {
- public AbstractCatalogSupportFlatMapTransform(@NonNull CatalogTable
inputCatalogTable) {
+ private final ReadonlyConfig config;
+ private final TableSchemaChangeEventHandler tableSchemaChangeEventHandler;
+
+ public AbstractCatalogSupportFlatMapTransform(
+ @NonNull ReadonlyConfig config, @NonNull CatalogTable
inputCatalogTable) {
super(inputCatalogTable);
+ this.config = config;
+ this.tableSchemaChangeEventHandler = new
TableSchemaChangeEventDispatcher();
}
public AbstractCatalogSupportFlatMapTransform(
- @NonNull CatalogTable inputCatalogTable, ErrorHandleWay
rowErrorHandleWay) {
+ @NonNull CatalogTable inputCatalogTable,
+ ErrorHandleWay rowErrorHandleWay,
+ ReadonlyConfig config) {
super(inputCatalogTable, rowErrorHandleWay);
+ this.config = config;
+ this.tableSchemaChangeEventHandler = new
TableSchemaChangeEventDispatcher();
}
@Override
public List<SeaTunnelRow> flatMap(SeaTunnelRow row) {
return transform(row);
}
+
+ @Override
+ public TableSchema transformTableSchema() {
+ return convertTableSchema(inputCatalogTable.getTableSchema());
+ }
+
+ @Override
+ public SchemaChangeEvent mapSchemaChangeEvent(SchemaChangeEvent event) {
Review Comment:
Should be implemented separately by each transform logic
e.g: add column action
1. sql transform ignore：
```
query = "select id, name from dual"
```
2. sql transform accepted：
```
query = "select * from dual"
```
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