some interface

Author: CorvusYe

.gitignore

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+
+.dart_tool/
+.vscode/
+
+pubspec.lock

CHANGELOG.md

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+## 1.0.0
+
+- Initial version.

README.md

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+A sample command-line application with an entrypoint in `bin/`, library code
+in `lib/`, and example unit test in `test/`.

analysis_options.yaml

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+# This file configures the static analysis results for your project (errors,
+# warnings, and lints).
+#
+# This enables the 'recommended' set of lints from `package:lints`.
+# This set helps identify many issues that may lead to problems when running
+# or consuming Dart code, and enforces writing Dart using a single, idiomatic
+# style and format.
+#
+# If you want a smaller set of lints you can change this to specify
+# 'package:lints/core.yaml'. These are just the most critical lints
+# (the recommended set includes the core lints).
+# The core lints are also what is used by pub.dev for scoring packages.
+
+include: package:lints/recommended.yaml
+
+# Uncomment the following section to specify additional rules.
+
+# linter:
+#   rules:
+#     - camel_case_types
+
+# analyzer:
+#   exclude:
+#     - path/to/excluded/files/**
+
+# For more information about the core and recommended set of lints, see
+# https://dart.dev/go/core-lints
+
+# For additional information about configuring this file, see
+# https://dart.dev/guides/language/analysis-options

bin/dart_gdbc.dart

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+import 'package:dart_gdbc/dart_gdbc.dart' as dart_gdbc;
+
+void main(List<String> arguments) {
+  // print('Hello world: ${dart_gdbc.calculate()}!');
+}

lib/dart_gdbc.dart

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+library dart_gdbc;
+
+part 'src/driver.dart';
+part 'src/connection.dart';
+part 'src/statement.dart';
+part 'src/result_set.dart';
+part 'src/result_set_meta_data.dart';
+part 'src/parameter_meta_data.dart';
+
+part 'src/prepared_statement.dart';
+
+part 'src/data_source.dart';

lib/src/connection.dart

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+part of dart_gdbc;
+
+abstract class Connection {
+  Future<Statement> createStatement();
+
+  Future<PreparedStatement> prepareStatement(String gql);
+
+  Future<PreparedStatement> prepareStatementWithParameters(
+      String gql, List<ParameterMetaData> parameters);
+
+  Future<ResultSet> executeQuery(String gql);
+
+  Future<int> executeUpdate(String gql);
+
+  Future<bool> getAutoCommit();
+
+  Future<void> setAutoCommit(bool autoCommit);
+
+  Future<void> commit();
+
+  Future<void> rollback();
+
+  Future<void> close();
+
+  Future<bool> isClosed();
+
+  Future<ResultSetMetaData> getMetaData();
+}

lib/src/data_source.dart

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+part of dart_gdbc;
+
+abstract class DataSource {
+  Future<Connection> getConnection({String username, String password});
+}

lib/src/driver.dart

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+part of dart_gdbc;
+
+abstract class Driver {
+  Connection connect(String url, {Map<String, String> properties});
+
+  bool acceptsURL(String url);
+}

lib/src/parameter_meta_data.dart

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+part of dart_gdbc;
+
+abstract class ParameterMetaData {}