public void doDrop()

in google-cloud-spanner-hibernate-dialect/src/main/java/com/google/cloud/spanner/hibernate/schema/SpannerSchemaDropper.java [49:75]

23 lines of code
2 McCabe index (conditional complexity)


  public void doDrop(
      Metadata metadata,
      ExecutionOptions options,
      ContributableMatcher contributableInclusionFilter,
      SourceDescriptor sourceDescriptor,
      TargetDescriptor targetDescriptor) {

    // Initialize auxiliary database objects to enable DDL statement batching.
    metadata.getDatabase().addAuxiliaryDatabaseObject(new StartBatchDdl(Action.DROP));
    metadata.getDatabase().addAuxiliaryDatabaseObject(new RunBatchDdl(Action.DROP));

    DdlTransactionIsolator isolator = tool.getDdlTransactionIsolator(options);
    try {
      Connection connection = isolator.getIsolatedConnection();
      // Initialize exporters with drop table dependencies so tables are dropped in the right order.
      SpannerDatabaseInfo spannerDatabaseInfo =
          new SpannerDatabaseInfo(metadata.getDatabase(), connection.getMetaData());
      tool.getSpannerTableExporter(options).init(metadata, spannerDatabaseInfo, Action.DROP);
      tool.getForeignKeyExporter(options).init(spannerDatabaseInfo);
      schemaDropper.doDrop(
          metadata, options, contributableInclusionFilter, sourceDescriptor, targetDescriptor);
    } catch (SQLException e) {
      throw new RuntimeException("Failed to update Spanner table schema.", e);
    } finally {
      isolator.release();
    }
  }