Support char[acter] type. (#274)

isoos · Dec 23, 2023 · adb99ec · adb99ec
1 parent 0bdc0d6
commit adb99ec
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Showing 7 changed files with 27 additions and 1 deletion.
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## 3.0.5
+
+- Support for type `char`/`character`/`bpchar`.
+
 ## 3.0.4
 
 - Fix: SSL connection problem handler.

diff --git a/lib/src/types.dart b/lib/src/types.dart
@@ -147,6 +147,9 @@ abstract class Type<T extends Object> {
   /// Used to represent value without any type representation.
   static const unspecified = UnspecifiedType();
 
+  /// Must be a [String]
+  static const char = GenericType<String>(TypeOid.char);
+
   /// Must be a [String].
   static const text = GenericType<String>(TypeOid.text);
 

diff --git a/lib/src/types/binary_codec.dart b/lib/src/types/binary_codec.dart
@@ -92,6 +92,7 @@ class PostgresBinaryEncoder {
           throw FormatException(
               'Invalid type for parameter value. Expected: int Got: ${input.runtimeType}');
         }
+      case TypeOid.char:
       case TypeOid.name:
       case TypeOid.text:
       case TypeOid.varChar:
@@ -518,6 +519,7 @@ class PostgresBinaryDecoder {
         ByteData.view(input.buffer, input.offsetInBytes, input.lengthInBytes);
 
     switch (typeOid) {
+      case TypeOid.char:
       case TypeOid.name:
       case TypeOid.text:
       case TypeOid.varChar:

diff --git a/lib/src/types/text_codec.dart b/lib/src/types/text_codec.dart
@@ -228,6 +228,7 @@ class PostgresTextDecoder {
   Object? convert(DecodeInput di) {
     // ignore: unnecessary_cast
     switch (_typeOid) {
+      case TypeOid.char:
       case TypeOid.name:
       case TypeOid.text:
       case TypeOid.varChar:

diff --git a/lib/src/types/type_registry.dart b/lib/src/types/type_registry.dart
@@ -20,6 +20,7 @@ class TypeOid {
   static const boolean = 16;
   static const booleanArray = 1000;
   static const byteArray = 17;
+  static const char = 1042;
   static const date = 1082;
   static const double = 701;
   static const doubleArray = 1022;
@@ -47,6 +48,7 @@ class TypeOid {
 
 final _builtInTypes = <Type>{
   Type.unspecified,
+  Type.char,
   Type.name,
   Type.text,
   Type.varChar,
@@ -81,6 +83,9 @@ final _builtInTypeNames = <String, Type>{
   'bigint': Type.bigInteger,
   'boolean': Type.boolean,
   'bytea': Type.byteArray,
+  'bpchar': Type.char,
+  'char': Type.char,
+  'character': Type.char,
   'date': Type.date,
   'double precision': Type.double,
   'float4': Type.real,

diff --git a/pubspec.yaml b/pubspec.yaml
@@ -1,9 +1,10 @@
 name: postgres
 description: PostgreSQL database driver. Supports statement reuse and binary protocol and connection pooling.
-version: 3.0.4
+version: 3.0.5
 homepage: https://github.com/isoos/postgresql-dart
 topics:
   - sql
+  - db
   - database
   - postgres
 

diff --git a/test/encoding_test.dart b/test/encoding_test.dart
@@ -305,6 +305,16 @@ void main() {
       }
     });
 
+    test('char', () async {
+      await expectReversible(
+        'char',
+        [null, 'a'],
+        negative: 0,
+        expectedDartType: 'String',
+      );
+    });
+
+
     test('varchar', () async {
       await expectReversible(
         'varchar',