105 lines
3.5 KiB
Dart
105 lines
3.5 KiB
Dart
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/// Applies additional attributes to a database column.
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class Column {
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/// If `true`, a SQL field will be auto-incremented.
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final bool autoIncrement;
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/// If `true`, a SQL field will be nullable.
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final bool nullable;
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/// Specifies the length of a `VARCHAR`.
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final int length;
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/// Explicitly defines a SQL type for this column.
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final ColumnType type;
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/// Specifies what kind of index this column is, if any.
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final IndexType index;
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/// The default value of this field.
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final defaultValue;
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const Column(
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{this.autoIncrement: false,
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this.nullable: true,
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this.length,
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this.type,
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this.index: IndexType.NONE,
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this.defaultValue});
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}
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class PrimaryKey extends Column {
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const PrimaryKey({bool autoIncrement: true})
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: super(autoIncrement: autoIncrement, index: IndexType.PRIMARY_KEY);
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}
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const Column primaryKey = const PrimaryKey();
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/// Maps to SQL index types.
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enum IndexType {
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NONE,
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/// Standard index.
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INDEX,
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/// A primary key.
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PRIMARY_KEY,
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/// A *unique* index.
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UNIQUE
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}
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/// Maps to SQL data types.
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///
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/// Features all types from this list: http://www.tutorialspoint.com/sql/sql-data-types.htm
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class ColumnType {
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/// The name of this data type.
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final String name;
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const ColumnType._(this.name);
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// Numbers
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static const ColumnType BIG_INT = const ColumnType._('bigint');
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static const ColumnType INT = const ColumnType._('int');
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static const ColumnType SMALL_INT = const ColumnType._('smallint');
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static const ColumnType TINY_INT = const ColumnType._('tinyint');
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static const ColumnType BIT = const ColumnType._('bit');
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static const ColumnType DECIMAL = const ColumnType._('decimal');
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static const ColumnType NUMERIC = const ColumnType._('numeric');
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static const ColumnType MONEY = const ColumnType._('money');
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static const ColumnType SMALL_MONEY = const ColumnType._('smallmoney');
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static const ColumnType FLOAT = const ColumnType._('float');
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static const ColumnType REAL = const ColumnType._('real');
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// Dates and times
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static const ColumnType DATE_TIME = const ColumnType._('datetime');
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static const ColumnType SMALL_DATE_TIME = const ColumnType._('smalldatetime');
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static const ColumnType DATE = const ColumnType._('date');
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static const ColumnType TIME = const ColumnType._('time');
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static const ColumnType TIME_STAMP = const ColumnType._('timestamp');
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// Strings
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static const ColumnType CHAR = const ColumnType._('char');
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static const ColumnType VAR_CHAR = const ColumnType._('varchar');
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static const ColumnType VAR_CHAR_MAX = const ColumnType._('varchar(max)');
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static const ColumnType TEXT = const ColumnType._('text');
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// Unicode strings
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static const ColumnType NCHAR = const ColumnType._('nchar');
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static const ColumnType NVAR_CHAR = const ColumnType._('nvarchar');
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static const ColumnType NVAR_CHAR_MAX = const ColumnType._('nvarchar(max)');
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static const ColumnType NTEXT = const ColumnType._('ntext');
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// Binary
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static const ColumnType BINARY = const ColumnType._('binary');
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static const ColumnType VAR_BINARY = const ColumnType._('varbinary');
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static const ColumnType VAR_BINARY_MAX = const ColumnType._('varbinary(max)');
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static const ColumnType IMAGE = const ColumnType._('image');
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// Misc.
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static const ColumnType SQL_VARIANT = const ColumnType._('sql_variant');
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static const ColumnType UNIQUE_IDENTIFIER =
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const ColumnType._('uniqueidentifier');
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static const ColumnType XML = const ColumnType._('xml');
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static const ColumnType CURSOR = const ColumnType._('cursor');
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static const ColumnType TABLE = const ColumnType._('table');
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}
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