How to use

TableMetaDataFactory

in

org.apache.shardingsphere.core.metadata.table

private static void changeColumnDefinitionPositions(final Collection<ColumnPositionSegment> changedPositionColumns, final List<ColumnMetaData> columnMetaDataList) {
  for (ColumnPositionSegment each : changedPositionColumns) {
    if (each instanceof ColumnFirstPositionSegment) {
      changeColumnDefinitionPosition((ColumnFirstPositionSegment) each, columnMetaDataList);
    } else {
      changeColumnDefinitionPosition((ColumnAfterPositionSegment) each, columnMetaDataList);
    }
  }
}

/**
 * New instance of table meta data.
 *
 * @param alterTableStatement alter table statement
 * @param oldTableMetaData old table meta data
 * @return instance of table meta data
 */
public static TableMetaData newInstance(final AlterTableStatement alterTableStatement, final TableMetaData oldTableMetaData) {
  List<ColumnMetaData> result = createColumnMetaDataList(alterTableStatement.getModifiedColumnDefinitions(), alterTableStatement.isDropPrimaryKey(), oldTableMetaData);
  result.addAll(createColumnMetaDataList(alterTableStatement.getAddedColumnDefinitions(), alterTableStatement.isDropPrimaryKey()));
  changeColumnDefinitionPositions(alterTableStatement.getChangedPositionColumns(), result);
  dropColumnDefinitions(alterTableStatement.getDroppedColumnNames(), result);
  return new TableMetaData(result);
}

private static void changeColumnDefinitionPosition(final ColumnFirstPositionSegment columnFirstPositionSegment, final List<ColumnMetaData> columnMetaDataList) {
  Optional<ColumnMetaData> columnMetaData = find(columnFirstPositionSegment.getColumnName(), columnMetaDataList);
  if (columnMetaData.isPresent()) {
    columnMetaDataList.remove(columnMetaData.get());
    columnMetaDataList.add(0, columnMetaData.get());
  }
}

private void refreshTableMetaData(final ShardingContext shardingContext, final CreateTableStatement createTableStatement) {
  shardingContext.getMetaData().getTable().put(createTableStatement.getTables().getSingleTableName(), TableMetaDataFactory.newInstance(createTableStatement));
}

private void refreshTableMetaData(final CreateTableStatement createTableStatement) {
  getMetaData().getTable().put(createTableStatement.getTables().getSingleTableName(), TableMetaDataFactory.newInstance(createTableStatement));
}

private void refreshTableMetaData(final CreateTableStatement createTableStatement) {
  getMetaData().getTable().put(createTableStatement.getTables().getSingleTableName(), TableMetaDataFactory.newInstance(createTableStatement));
}

private static void changeColumnDefinitionPosition(final ColumnAfterPositionSegment columnAfterPositionSegment, final List<ColumnMetaData> columnMetaDataList) {
  Optional<ColumnMetaData> columnMetaData = find(columnAfterPositionSegment.getColumnName(), columnMetaDataList);
  Optional<ColumnMetaData> afterColumnMetaData = find(columnAfterPositionSegment.getAfterColumnName(), columnMetaDataList);
  if (columnMetaData.isPresent() && afterColumnMetaData.isPresent()) {
    columnMetaDataList.remove(columnMetaData.get());
    columnMetaDataList.add(columnMetaDataList.indexOf(afterColumnMetaData.get()) + 1, columnMetaData.get());
  }
}

private void refreshTableMetaData(final AlterTableStatement alterTableStatement) {
  String logicTableName = alterTableStatement.getTables().getSingleTableName();
  TableMetaData newTableMetaData = TableMetaDataFactory.newInstance(alterTableStatement, getMetaData().getTable().get(logicTableName));
  Optional<String> newTableName = alterTableStatement.getNewTableName();
  if (newTableName.isPresent()) {
    getMetaData().getTable().put(newTableName.get(), newTableMetaData);
    getMetaData().getTable().remove(logicTableName);
  } else {
    getMetaData().getTable().put(logicTableName, newTableMetaData);
  }
}

private void refreshTableMetaData(final AlterTableStatement alterTableStatement) {
  String logicTableName = alterTableStatement.getTables().getSingleTableName();
  TableMetaData newTableMetaData = TableMetaDataFactory.newInstance(alterTableStatement, getMetaData().getTable().get(logicTableName));
  Optional<String> newTableName = alterTableStatement.getNewTableName();
  if (newTableName.isPresent()) {
    getMetaData().getTable().put(newTableName.get(), newTableMetaData);
    getMetaData().getTable().remove(logicTableName);
  } else {
    getMetaData().getTable().put(logicTableName, newTableMetaData);
  }
}

private void refreshTableMetaData(final ShardingContext shardingContext, final AlterTableStatement alterTableStatement) {
  String logicTableName = alterTableStatement.getTables().getSingleTableName();
  TableMetaData newTableMetaData = TableMetaDataFactory.newInstance(alterTableStatement, shardingContext.getMetaData().getTable().get(logicTableName));
  Optional<String> newTableName = alterTableStatement.getNewTableName();
  if (newTableName.isPresent()) {
    shardingContext.getMetaData().getTable().put(newTableName.get(), newTableMetaData);
    shardingContext.getMetaData().getTable().remove(logicTableName);
  } else {
    shardingContext.getMetaData().getTable().put(logicTableName, newTableMetaData);
  }
}