122 lines
3.7 KiB
Dart
122 lines
3.7 KiB
Dart
const List<String> SQL_RESERVED_WORDS = [
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'SELECT',
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'UPDATE',
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'INSERT',
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'DELETE',
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'FROM',
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'ASC',
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'DESC',
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'VALUES',
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'RETURNING',
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'ORDER',
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'BY',
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];
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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 nullable.
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final bool isNullable;
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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 indexType;
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const Column(
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{this.isNullable = true,
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this.length,
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this.type,
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this.indexType = IndexType.none});
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}
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class PrimaryKey extends Column {
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const PrimaryKey({ColumnType columnType})
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: super(type: columnType, indexType: IndexType.primaryKey);
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}
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const Column primaryKey = 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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standardIndex,
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/// A primary key.
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primaryKey,
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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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static const ColumnType boolean = ColumnType('boolean');
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static const ColumnType smallSerial = ColumnType('smallserial');
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static const ColumnType serial = ColumnType('serial');
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static const ColumnType bigSerial = ColumnType('bigserial');
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// Numbers
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static const ColumnType bigInt = ColumnType('bigint');
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static const ColumnType int = ColumnType('int');
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static const ColumnType smallInt = ColumnType('smallint');
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static const ColumnType tinyInt = ColumnType('tinyint');
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static const ColumnType bit = ColumnType('bit');
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static const ColumnType decimal = ColumnType('decimal');
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static const ColumnType numeric = ColumnType('numeric');
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static const ColumnType money = ColumnType('money');
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static const ColumnType smallMoney = ColumnType('smallmoney');
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static const ColumnType float = ColumnType('float');
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static const ColumnType real = ColumnType('real');
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// Dates and times
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static const ColumnType dateTime = ColumnType('datetime');
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static const ColumnType smallDateTime = ColumnType('smalldatetime');
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static const ColumnType date = ColumnType('date');
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static const ColumnType time = ColumnType('time');
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static const ColumnType timeStamp = ColumnType('timestamp');
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static const ColumnType timeStampWithTimeZone =
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ColumnType('timestamp with time zone');
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// Strings
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static const ColumnType char = ColumnType('char');
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static const ColumnType varChar = ColumnType('varchar');
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static const ColumnType varCharMax = ColumnType('varchar(max)');
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static const ColumnType text = ColumnType('text');
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// Unicode strings
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static const ColumnType nChar = ColumnType('nchar');
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static const ColumnType nVarChar = ColumnType('nvarchar');
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static const ColumnType nVarCharMax = ColumnType('nvarchar(max)');
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static const ColumnType nText = ColumnType('ntext');
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// Binary
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static const ColumnType binary = ColumnType('binary');
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static const ColumnType varBinary = ColumnType('varbinary');
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static const ColumnType varBinaryMax = ColumnType('varbinary(max)');
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static const ColumnType image = ColumnType('image');
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// JSON.
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static const ColumnType json = ColumnType('json');
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static const ColumnType jsonb = ColumnType('jsonb');
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// Misc.
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static const ColumnType sqlVariant = ColumnType('sql_variant');
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static const ColumnType uniqueIdentifier = ColumnType('uniqueidentifier');
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static const ColumnType xml = ColumnType('xml');
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static const ColumnType cursor = ColumnType('cursor');
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static const ColumnType table = ColumnType('table');
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}
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