[FLINK-35325][cdc-connector][paimon] Support specify column order when adding new columns to a table
This closes #3323.pull/3348/head
joyCurry30
8 months ago
committed by
GitHub
parent
5b28d1a579
commit
0214166049
@ -0,0 +1,103 @@
|
||||
/*
|
||||
* Licensed to the Apache Software Foundation (ASF) under one or more
|
||||
* contributor license agreements. See the NOTICE file distributed with
|
||||
* this work for additional information regarding copyright ownership.
|
||||
* The ASF licenses this file to You under the Apache License, Version 2.0
|
||||
* (the "License"); you may not use this file except in compliance with
|
||||
* the License. You may obtain a copy of the License at
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS,
|
||||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
package org.apache.flink.cdc.connectors.paimon.sink;
|
||||
|
||||
import org.apache.flink.cdc.common.event.AddColumnEvent;
|
||||
import org.apache.flink.cdc.common.types.DataType;
|
||||
import org.apache.flink.cdc.common.types.utils.DataTypeUtils;
|
||||
|
||||
import org.apache.paimon.flink.LogicalTypeConversion;
|
||||
import org.apache.paimon.schema.SchemaChange;
|
||||
|
||||
/**
|
||||
* The SchemaChangeProvider class provides static methods to create SchemaChange objects that
|
||||
* represent different types of schema modifications.
|
||||
*/
|
||||
public class SchemaChangeProvider {
|
||||
|
||||
/**
|
||||
* Creates a SchemaChange object for adding a column without specifying its position.
|
||||
*
|
||||
* @param columnWithPosition The ColumnWithPosition object containing the column details and its
|
||||
* intended position within the schema.
|
||||
* @return A SchemaChange object representing the addition of a column.
|
||||
*/
|
||||
public static SchemaChange add(AddColumnEvent.ColumnWithPosition columnWithPosition) {
|
||||
return SchemaChange.addColumn(
|
||||
columnWithPosition.getAddColumn().getName(),
|
||||
LogicalTypeConversion.toDataType(
|
||||
DataTypeUtils.toFlinkDataType(columnWithPosition.getAddColumn().getType())
|
||||
.getLogicalType()),
|
||||
columnWithPosition.getAddColumn().getComment());
|
||||
}
|
||||
|
||||
/**
|
||||
* Creates a SchemaChange object for adding a column with a specified position.
|
||||
*
|
||||
* @param columnWithPosition The ColumnWithPosition object containing the column details and its
|
||||
* intended position within the schema.
|
||||
* @param move The move operation to indicate the column's new position.
|
||||
* @return A SchemaChange object representing the addition of a column with position
|
||||
* information.
|
||||
*/
|
||||
public static SchemaChange add(
|
||||
AddColumnEvent.ColumnWithPosition columnWithPosition, SchemaChange.Move move) {
|
||||
return SchemaChange.addColumn(
|
||||
columnWithPosition.getAddColumn().getName(),
|
||||
LogicalTypeConversion.toDataType(
|
||||
DataTypeUtils.toFlinkDataType(columnWithPosition.getAddColumn().getType())
|
||||
.getLogicalType()),
|
||||
columnWithPosition.getAddColumn().getComment(),
|
||||
move);
|
||||
}
|
||||
|
||||
/**
|
||||
* Creates a SchemaChange object to update the data type of a column.
|
||||
*
|
||||
* @param oldColumnName The name of the column whose data type is to be updated.
|
||||
* @param newType The new DataType for the column.
|
||||
* @return A SchemaChange object representing the update of the column's data type.
|
||||
*/
|
||||
public static SchemaChange updateColumnType(String oldColumnName, DataType newType) {
|
||||
return SchemaChange.updateColumnType(
|
||||
oldColumnName,
|
||||
LogicalTypeConversion.toDataType(
|
||||
DataTypeUtils.toFlinkDataType(newType).getLogicalType()));
|
||||
}
|
||||
|
||||
/**
|
||||
* Creates a SchemaChange object for renaming a column.
|
||||
*
|
||||
* @param oldColumnName The current name of the column to be renamed.
|
||||
* @param newColumnName The new name for the column.
|
||||
* @return A SchemaChange object representing the renaming of a column.
|
||||
*/
|
||||
public static SchemaChange rename(String oldColumnName, String newColumnName) {
|
||||
return SchemaChange.renameColumn(oldColumnName, newColumnName);
|
||||
}
|
||||
|
||||
/**
|
||||
* Creates a SchemaChange object for dropping a column.
|
||||
*
|
||||
* @param columnName The name of the column to be dropped.
|
||||
* @return A SchemaChange object representing the deletion of a column.
|
||||
*/
|
||||
public static SchemaChange drop(String columnName) {
|
||||
return SchemaChange.dropColumn(columnName);
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue