public void alterTable()

in aws-glue-datacatalog-client-common/src/main/java/com/amazonaws/glue/catalog/metastore/GlueMetastoreClientDelegate.java [409:457]
40 lines of code
12 McCabe index (conditional complexity)

  public void alterTable(
      String dbName,
      String oldTableName,
      org.apache.hadoop.hive.metastore.api.Table newTable,
      EnvironmentContext environmentContext
  ) throws TException {
    checkArgument(StringUtils.isNotEmpty(dbName), "dbName cannot be null or empty");
    checkArgument(StringUtils.isNotEmpty(oldTableName), "oldTableName cannot be null or empty");
    checkNotNull(newTable, "newTable cannot be null");

    if (isCascade(environmentContext)) {
      throw new UnsupportedOperationException("Cascade for alter_table is not supported");
    }

    if (!oldTableName.equals(newTable.getTableName())) {
      throw new UnsupportedOperationException("Table rename is not supported");
    }

    validateTableObject(newTable, conf);
    if (!tableExists(dbName, oldTableName)) {
      throw new UnknownTableException("Table: " + oldTableName + " does not exists");
    }

    // If table properties has EXTERNAL set, update table type accordinly
    // mimics Hive's ObjectStore#convertToMTable, added in HIVE-1329
    boolean isExternal = Boolean.parseBoolean(newTable.getParameters().get("EXTERNAL"));
    if (MANAGED_TABLE.toString().equals(newTable.getTableType()) && isExternal) {
      newTable.setTableType(EXTERNAL_TABLE.toString());
    } else if (EXTERNAL_TABLE.toString().equals(newTable.getTableType()) && !isExternal) {
      newTable.setTableType(MANAGED_TABLE.toString());
    }

    if (hiveShims.requireCalStats(conf, null, null, newTable, environmentContext) && newTable.getPartitionKeys().isEmpty()) {
      //update table stats for non-partition Table
      org.apache.hadoop.hive.metastore.api.Database db = getDatabase(newTable.getDbName());
      hiveShims.updateTableStatsFast(db, newTable, wh, false, true, environmentContext);
    }

    try {
      TableInput newTableInput = GlueInputConverter.convertToTableInput(newTable);
      glueMetastore.updateTable(dbName, newTableInput);
    } catch (AmazonServiceException e) {
      throw CatalogToHiveConverter.wrapInHiveException(e);
    } catch (Exception e) {
      String msg = "Unable to alter table: " + oldTableName;
      logger.error(msg, e);
      throw new MetaException(msg + e);
    }
  }